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[SCSI] lpfc 8.1.9 : Misc Bug Fixes
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2006 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
39
40 /* Called to verify a rcv'ed ADISC was intended for us. */
41 static int
42 lpfc_check_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
43 struct lpfc_name * nn, struct lpfc_name * pn)
44 {
45 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
46 * table entry for that node.
47 */
48 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)) != 0)
49 return 0;
50
51 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)) != 0)
52 return 0;
53
54 /* we match, return success */
55 return 1;
56 }
57
58 int
59 lpfc_check_sparm(struct lpfc_hba * phba,
60 struct lpfc_nodelist * ndlp, struct serv_parm * sp,
61 uint32_t class)
62 {
63 volatile struct serv_parm *hsp = &phba->fc_sparam;
64 uint16_t hsp_value, ssp_value = 0;
65
66 /*
67 * The receive data field size and buffer-to-buffer receive data field
68 * size entries are 16 bits but are represented as two 8-bit fields in
69 * the driver data structure to account for rsvd bits and other control
70 * bits. Reconstruct and compare the fields as a 16-bit values before
71 * correcting the byte values.
72 */
73 if (sp->cls1.classValid) {
74 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
75 hsp->cls1.rcvDataSizeLsb;
76 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
77 sp->cls1.rcvDataSizeLsb;
78 if (ssp_value > hsp_value) {
79 sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
80 sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
81 }
82 } else if (class == CLASS1) {
83 return 0;
84 }
85
86 if (sp->cls2.classValid) {
87 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
88 hsp->cls2.rcvDataSizeLsb;
89 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
90 sp->cls2.rcvDataSizeLsb;
91 if (ssp_value > hsp_value) {
92 sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
93 sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
94 }
95 } else if (class == CLASS2) {
96 return 0;
97 }
98
99 if (sp->cls3.classValid) {
100 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
101 hsp->cls3.rcvDataSizeLsb;
102 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
103 sp->cls3.rcvDataSizeLsb;
104 if (ssp_value > hsp_value) {
105 sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
106 sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
107 }
108 } else if (class == CLASS3) {
109 return 0;
110 }
111
112 /*
113 * Preserve the upper four bits of the MSB from the PLOGI response.
114 * These bits contain the Buffer-to-Buffer State Change Number
115 * from the target and need to be passed to the FW.
116 */
117 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
118 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
119 if (ssp_value > hsp_value) {
120 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
121 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
122 (hsp->cmn.bbRcvSizeMsb & 0x0F);
123 }
124
125 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
126 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
127 return 1;
128 }
129
130 static void *
131 lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
132 struct lpfc_iocbq *cmdiocb,
133 struct lpfc_iocbq *rspiocb)
134 {
135 struct lpfc_dmabuf *pcmd, *prsp;
136 uint32_t *lp;
137 void *ptr = NULL;
138 IOCB_t *irsp;
139
140 irsp = &rspiocb->iocb;
141 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
142
143 /* For lpfc_els_abort, context2 could be zero'ed to delay
144 * freeing associated memory till after ABTS completes.
145 */
146 if (pcmd) {
147 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
148 list);
149 if (prsp) {
150 lp = (uint32_t *) prsp->virt;
151 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
152 }
153 } else {
154 /* Force ulpStatus error since we are returning NULL ptr */
155 if (!(irsp->ulpStatus)) {
156 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
157 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
158 }
159 ptr = NULL;
160 }
161 return ptr;
162 }
163
164
165 /*
166 * Free resources / clean up outstanding I/Os
167 * associated with a LPFC_NODELIST entry. This
168 * routine effectively results in a "software abort".
169 */
170 int
171 lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
172 int send_abts)
173 {
174 struct lpfc_sli *psli;
175 struct lpfc_sli_ring *pring;
176 struct lpfc_iocbq *iocb, *next_iocb;
177 IOCB_t *icmd;
178 int found = 0;
179
180 /* Abort outstanding I/O on NPort <nlp_DID> */
181 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
182 "%d:0205 Abort outstanding I/O on NPort x%x "
183 "Data: x%x x%x x%x\n",
184 phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
185 ndlp->nlp_state, ndlp->nlp_rpi);
186
187 psli = &phba->sli;
188 pring = &psli->ring[LPFC_ELS_RING];
189
190 /* First check the txq */
191 do {
192 found = 0;
193 spin_lock_irq(phba->host->host_lock);
194 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
195 /* Check to see if iocb matches the nport we are looking
196 for */
197 if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
198 found = 1;
199 /* It matches, so deque and call compl with an
200 error */
201 list_del(&iocb->list);
202 pring->txq_cnt--;
203 if (iocb->iocb_cmpl) {
204 icmd = &iocb->iocb;
205 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
206 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
207 spin_unlock_irq(phba->host->host_lock);
208 (iocb->iocb_cmpl) (phba, iocb, iocb);
209 spin_lock_irq(phba->host->host_lock);
210 } else
211 lpfc_sli_release_iocbq(phba, iocb);
212 break;
213 }
214 }
215 spin_unlock_irq(phba->host->host_lock);
216 } while (found);
217
218 /* Everything on txcmplq will be returned by firmware
219 * with a no rpi / linkdown / abort error. For ring 0,
220 * ELS discovery, we want to get rid of it right here.
221 */
222 /* Next check the txcmplq */
223 do {
224 found = 0;
225 spin_lock_irq(phba->host->host_lock);
226 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
227 list) {
228 /* Check to see if iocb matches the nport we are looking
229 for */
230 if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
231 found = 1;
232 /* It matches, so deque and call compl with an
233 error */
234 list_del(&iocb->list);
235 pring->txcmplq_cnt--;
236
237 icmd = &iocb->iocb;
238 /* If the driver is completing an ELS
239 * command early, flush it out of the firmware.
240 */
241 if (send_abts &&
242 (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
243 (icmd->un.elsreq64.bdl.ulpIoTag32)) {
244 lpfc_sli_issue_abort_iotag32(phba,
245 pring, iocb);
246 }
247 if (iocb->iocb_cmpl) {
248 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
249 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
250 spin_unlock_irq(phba->host->host_lock);
251 (iocb->iocb_cmpl) (phba, iocb, iocb);
252 spin_lock_irq(phba->host->host_lock);
253 } else
254 lpfc_sli_release_iocbq(phba, iocb);
255 break;
256 }
257 }
258 spin_unlock_irq(phba->host->host_lock);
259 } while(found);
260
261 /* If we are delaying issuing an ELS command, cancel it */
262 if (ndlp->nlp_flag & NLP_DELAY_TMO)
263 lpfc_cancel_retry_delay_tmo(phba, ndlp);
264 return 0;
265 }
266
267 static int
268 lpfc_rcv_plogi(struct lpfc_hba * phba,
269 struct lpfc_nodelist * ndlp,
270 struct lpfc_iocbq *cmdiocb)
271 {
272 struct lpfc_dmabuf *pcmd;
273 uint32_t *lp;
274 IOCB_t *icmd;
275 struct serv_parm *sp;
276 LPFC_MBOXQ_t *mbox;
277 struct ls_rjt stat;
278 int rc;
279
280 memset(&stat, 0, sizeof (struct ls_rjt));
281 if (phba->hba_state <= LPFC_FLOGI) {
282 /* Before responding to PLOGI, check for pt2pt mode.
283 * If we are pt2pt, with an outstanding FLOGI, abort
284 * the FLOGI and resend it first.
285 */
286 if (phba->fc_flag & FC_PT2PT) {
287 lpfc_els_abort_flogi(phba);
288 if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
289 /* If the other side is supposed to initiate
290 * the PLOGI anyway, just ACC it now and
291 * move on with discovery.
292 */
293 phba->fc_edtov = FF_DEF_EDTOV;
294 phba->fc_ratov = FF_DEF_RATOV;
295 /* Start discovery - this should just do
296 CLEAR_LA */
297 lpfc_disc_start(phba);
298 } else {
299 lpfc_initial_flogi(phba);
300 }
301 } else {
302 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
303 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
304 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
305 ndlp);
306 return 0;
307 }
308 }
309 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
310 lp = (uint32_t *) pcmd->virt;
311 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
312 if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
313 /* Reject this request because invalid parameters */
314 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
315 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
316 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
317 return 0;
318 }
319 icmd = &cmdiocb->iocb;
320
321 /* PLOGI chkparm OK */
322 lpfc_printf_log(phba,
323 KERN_INFO,
324 LOG_ELS,
325 "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
326 phba->brd_no,
327 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
328 ndlp->nlp_rpi);
329
330 if ((phba->cfg_fcp_class == 2) &&
331 (sp->cls2.classValid)) {
332 ndlp->nlp_fcp_info |= CLASS2;
333 } else {
334 ndlp->nlp_fcp_info |= CLASS3;
335 }
336 ndlp->nlp_class_sup = 0;
337 if (sp->cls1.classValid)
338 ndlp->nlp_class_sup |= FC_COS_CLASS1;
339 if (sp->cls2.classValid)
340 ndlp->nlp_class_sup |= FC_COS_CLASS2;
341 if (sp->cls3.classValid)
342 ndlp->nlp_class_sup |= FC_COS_CLASS3;
343 if (sp->cls4.classValid)
344 ndlp->nlp_class_sup |= FC_COS_CLASS4;
345 ndlp->nlp_maxframe =
346 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
347
348 /* no need to reg_login if we are already in one of these states */
349 switch (ndlp->nlp_state) {
350 case NLP_STE_NPR_NODE:
351 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
352 break;
353 case NLP_STE_REG_LOGIN_ISSUE:
354 case NLP_STE_PRLI_ISSUE:
355 case NLP_STE_UNMAPPED_NODE:
356 case NLP_STE_MAPPED_NODE:
357 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
358 return 1;
359 }
360
361 if ((phba->fc_flag & FC_PT2PT)
362 && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
363 /* rcv'ed PLOGI decides what our NPortId will be */
364 phba->fc_myDID = icmd->un.rcvels.parmRo;
365 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
366 if (mbox == NULL)
367 goto out;
368 lpfc_config_link(phba, mbox);
369 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
370 rc = lpfc_sli_issue_mbox
371 (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
372 if (rc == MBX_NOT_FINISHED) {
373 mempool_free( mbox, phba->mbox_mem_pool);
374 goto out;
375 }
376
377 lpfc_can_disctmo(phba);
378 }
379 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
380 if (mbox == NULL)
381 goto out;
382
383 if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
384 (uint8_t *) sp, mbox, 0)) {
385 mempool_free( mbox, phba->mbox_mem_pool);
386 goto out;
387 }
388
389 /* ACC PLOGI rsp command needs to execute first,
390 * queue this mbox command to be processed later.
391 */
392 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
393 mbox->context2 = ndlp;
394 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
395
396 /*
397 * If there is an outstanding PLOGI issued, abort it before
398 * sending ACC rsp for received PLOGI. If pending plogi
399 * is not canceled here, the plogi will be rejected by
400 * remote port and will be retried. On a configuration with
401 * single discovery thread, this will cause a huge delay in
402 * discovery. Also this will cause multiple state machines
403 * running in parallel for this node.
404 */
405 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
406 /* software abort outstanding PLOGI */
407 lpfc_els_abort(phba, ndlp, 1);
408 }
409
410 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
411 return 1;
412
413 out:
414 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
415 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
416 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
417 return 0;
418 }
419
420 static int
421 lpfc_rcv_padisc(struct lpfc_hba * phba,
422 struct lpfc_nodelist * ndlp,
423 struct lpfc_iocbq *cmdiocb)
424 {
425 struct lpfc_dmabuf *pcmd;
426 struct serv_parm *sp;
427 struct lpfc_name *pnn, *ppn;
428 struct ls_rjt stat;
429 ADISC *ap;
430 IOCB_t *icmd;
431 uint32_t *lp;
432 uint32_t cmd;
433
434 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
435 lp = (uint32_t *) pcmd->virt;
436
437 cmd = *lp++;
438 if (cmd == ELS_CMD_ADISC) {
439 ap = (ADISC *) lp;
440 pnn = (struct lpfc_name *) & ap->nodeName;
441 ppn = (struct lpfc_name *) & ap->portName;
442 } else {
443 sp = (struct serv_parm *) lp;
444 pnn = (struct lpfc_name *) & sp->nodeName;
445 ppn = (struct lpfc_name *) & sp->portName;
446 }
447
448 icmd = &cmdiocb->iocb;
449 if ((icmd->ulpStatus == 0) &&
450 (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
451 if (cmd == ELS_CMD_ADISC) {
452 lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
453 } else {
454 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
455 NULL, 0);
456 }
457 return 1;
458 }
459 /* Reject this request because invalid parameters */
460 stat.un.b.lsRjtRsvd0 = 0;
461 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
462 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
463 stat.un.b.vendorUnique = 0;
464 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
465
466 /* 1 sec timeout */
467 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
468
469 spin_lock_irq(phba->host->host_lock);
470 ndlp->nlp_flag |= NLP_DELAY_TMO;
471 spin_unlock_irq(phba->host->host_lock);
472 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
473 ndlp->nlp_prev_state = ndlp->nlp_state;
474 ndlp->nlp_state = NLP_STE_NPR_NODE;
475 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
476 return 0;
477 }
478
479 static int
480 lpfc_rcv_logo(struct lpfc_hba * phba,
481 struct lpfc_nodelist * ndlp,
482 struct lpfc_iocbq *cmdiocb,
483 uint32_t els_cmd)
484 {
485 /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
486 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
487 * PLOGIs during LOGO storms from a device.
488 */
489 ndlp->nlp_flag |= NLP_LOGO_ACC;
490 if (els_cmd == ELS_CMD_PRLO)
491 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
492 else
493 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
494
495 if (!(ndlp->nlp_type & NLP_FABRIC) ||
496 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
497 /* Only try to re-login if this is NOT a Fabric Node */
498 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
499 spin_lock_irq(phba->host->host_lock);
500 ndlp->nlp_flag |= NLP_DELAY_TMO;
501 spin_unlock_irq(phba->host->host_lock);
502
503 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
504 ndlp->nlp_prev_state = ndlp->nlp_state;
505 ndlp->nlp_state = NLP_STE_NPR_NODE;
506 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
507 } else {
508 ndlp->nlp_prev_state = ndlp->nlp_state;
509 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
510 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
511 }
512
513 spin_lock_irq(phba->host->host_lock);
514 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
515 spin_unlock_irq(phba->host->host_lock);
516 /* The driver has to wait until the ACC completes before it continues
517 * processing the LOGO. The action will resume in
518 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
519 * unreg_login, the driver waits so the ACC does not get aborted.
520 */
521 return 0;
522 }
523
524 static void
525 lpfc_rcv_prli(struct lpfc_hba * phba,
526 struct lpfc_nodelist * ndlp,
527 struct lpfc_iocbq *cmdiocb)
528 {
529 struct lpfc_dmabuf *pcmd;
530 uint32_t *lp;
531 PRLI *npr;
532 struct fc_rport *rport = ndlp->rport;
533 u32 roles;
534
535 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
536 lp = (uint32_t *) pcmd->virt;
537 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
538
539 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
540 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
541 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
542 (npr->prliType == PRLI_FCP_TYPE)) {
543 if (npr->initiatorFunc)
544 ndlp->nlp_type |= NLP_FCP_INITIATOR;
545 if (npr->targetFunc)
546 ndlp->nlp_type |= NLP_FCP_TARGET;
547 if (npr->Retry)
548 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
549 }
550 if (rport) {
551 /* We need to update the rport role values */
552 roles = FC_RPORT_ROLE_UNKNOWN;
553 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
554 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
555 if (ndlp->nlp_type & NLP_FCP_TARGET)
556 roles |= FC_RPORT_ROLE_FCP_TARGET;
557 fc_remote_port_rolechg(rport, roles);
558 }
559 }
560
561 static uint32_t
562 lpfc_disc_set_adisc(struct lpfc_hba * phba,
563 struct lpfc_nodelist * ndlp)
564 {
565 /* Check config parameter use-adisc or FCP-2 */
566 if ((phba->cfg_use_adisc == 0) &&
567 !(phba->fc_flag & FC_RSCN_MODE)) {
568 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
569 return 0;
570 }
571 spin_lock_irq(phba->host->host_lock);
572 ndlp->nlp_flag |= NLP_NPR_ADISC;
573 spin_unlock_irq(phba->host->host_lock);
574 return 1;
575 }
576
577 static uint32_t
578 lpfc_disc_illegal(struct lpfc_hba * phba,
579 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
580 {
581 lpfc_printf_log(phba,
582 KERN_ERR,
583 LOG_DISCOVERY,
584 "%d:0253 Illegal State Transition: node x%x event x%x, "
585 "state x%x Data: x%x x%x\n",
586 phba->brd_no,
587 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
588 ndlp->nlp_flag);
589 return ndlp->nlp_state;
590 }
591
592 /* Start of Discovery State Machine routines */
593
594 static uint32_t
595 lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
596 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
597 {
598 struct lpfc_iocbq *cmdiocb;
599
600 cmdiocb = (struct lpfc_iocbq *) arg;
601
602 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
603 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
604 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
605 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
606 return ndlp->nlp_state;
607 }
608 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
609 return NLP_STE_FREED_NODE;
610 }
611
612 static uint32_t
613 lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
614 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
615 {
616 lpfc_issue_els_logo(phba, ndlp, 0);
617 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
618 return ndlp->nlp_state;
619 }
620
621 static uint32_t
622 lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
623 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
624 {
625 struct lpfc_iocbq *cmdiocb;
626
627 cmdiocb = (struct lpfc_iocbq *) arg;
628
629 spin_lock_irq(phba->host->host_lock);
630 ndlp->nlp_flag |= NLP_LOGO_ACC;
631 spin_unlock_irq(phba->host->host_lock);
632 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
633 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
634
635 return ndlp->nlp_state;
636 }
637
638 static uint32_t
639 lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
640 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
641 {
642 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
643 return NLP_STE_FREED_NODE;
644 }
645
646 static uint32_t
647 lpfc_device_rm_unused_node(struct lpfc_hba * phba,
648 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
649 {
650 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
651 return NLP_STE_FREED_NODE;
652 }
653
654 static uint32_t
655 lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
656 void *arg, uint32_t evt)
657 {
658 struct lpfc_iocbq *cmdiocb = arg;
659 struct lpfc_dmabuf *pcmd;
660 struct serv_parm *sp;
661 uint32_t *lp;
662 struct ls_rjt stat;
663 int port_cmp;
664
665 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
666 lp = (uint32_t *) pcmd->virt;
667 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
668
669 memset(&stat, 0, sizeof (struct ls_rjt));
670
671 /* For a PLOGI, we only accept if our portname is less
672 * than the remote portname.
673 */
674 phba->fc_stat.elsLogiCol++;
675 port_cmp = memcmp(&phba->fc_portname, &sp->portName,
676 sizeof (struct lpfc_name));
677
678 if (port_cmp >= 0) {
679 /* Reject this request because the remote node will accept
680 ours */
681 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
682 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
683 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
684 } else {
685 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
686 } /* if our portname was less */
687
688 return ndlp->nlp_state;
689 }
690
691 static uint32_t
692 lpfc_rcv_logo_plogi_issue(struct lpfc_hba * phba,
693 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
694 {
695 struct lpfc_iocbq *cmdiocb;
696
697 cmdiocb = (struct lpfc_iocbq *) arg;
698
699 /* software abort outstanding PLOGI */
700 lpfc_els_abort(phba, ndlp, 1);
701
702 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
703 return ndlp->nlp_state;
704 }
705
706 static uint32_t
707 lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
708 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
709 {
710 struct lpfc_iocbq *cmdiocb;
711
712 cmdiocb = (struct lpfc_iocbq *) arg;
713
714 /* software abort outstanding PLOGI */
715 lpfc_els_abort(phba, ndlp, 1);
716
717 if (evt == NLP_EVT_RCV_LOGO) {
718 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
719 } else {
720 lpfc_issue_els_logo(phba, ndlp, 0);
721 }
722
723 /* Put ndlp in npr list set plogi timer for 1 sec */
724 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
725 spin_lock_irq(phba->host->host_lock);
726 ndlp->nlp_flag |= NLP_DELAY_TMO;
727 spin_unlock_irq(phba->host->host_lock);
728 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
729 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
730 ndlp->nlp_state = NLP_STE_NPR_NODE;
731 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
732
733 return ndlp->nlp_state;
734 }
735
736 static uint32_t
737 lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
738 struct lpfc_nodelist * ndlp, void *arg,
739 uint32_t evt)
740 {
741 struct lpfc_iocbq *cmdiocb, *rspiocb;
742 struct lpfc_dmabuf *pcmd, *prsp;
743 uint32_t *lp;
744 IOCB_t *irsp;
745 struct serv_parm *sp;
746 LPFC_MBOXQ_t *mbox;
747
748 cmdiocb = (struct lpfc_iocbq *) arg;
749 rspiocb = cmdiocb->context_un.rsp_iocb;
750
751 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
752 /* Recovery from PLOGI collision logic */
753 return ndlp->nlp_state;
754 }
755
756 irsp = &rspiocb->iocb;
757
758 if (irsp->ulpStatus)
759 goto out;
760
761 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
762
763 prsp = list_get_first(&pcmd->list,
764 struct lpfc_dmabuf,
765 list);
766 lp = (uint32_t *) prsp->virt;
767
768 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
769 if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
770 goto out;
771
772 /* PLOGI chkparm OK */
773 lpfc_printf_log(phba,
774 KERN_INFO,
775 LOG_ELS,
776 "%d:0121 PLOGI chkparm OK "
777 "Data: x%x x%x x%x x%x\n",
778 phba->brd_no,
779 ndlp->nlp_DID, ndlp->nlp_state,
780 ndlp->nlp_flag, ndlp->nlp_rpi);
781
782 if ((phba->cfg_fcp_class == 2) &&
783 (sp->cls2.classValid)) {
784 ndlp->nlp_fcp_info |= CLASS2;
785 } else {
786 ndlp->nlp_fcp_info |= CLASS3;
787 }
788 ndlp->nlp_class_sup = 0;
789 if (sp->cls1.classValid)
790 ndlp->nlp_class_sup |= FC_COS_CLASS1;
791 if (sp->cls2.classValid)
792 ndlp->nlp_class_sup |= FC_COS_CLASS2;
793 if (sp->cls3.classValid)
794 ndlp->nlp_class_sup |= FC_COS_CLASS3;
795 if (sp->cls4.classValid)
796 ndlp->nlp_class_sup |= FC_COS_CLASS4;
797 ndlp->nlp_maxframe =
798 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
799 sp->cmn.bbRcvSizeLsb;
800
801 if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
802 GFP_KERNEL)))
803 goto out;
804
805 lpfc_unreg_rpi(phba, ndlp);
806 if (lpfc_reg_login
807 (phba, irsp->un.elsreq64.remoteID,
808 (uint8_t *) sp, mbox, 0) == 0) {
809 switch (ndlp->nlp_DID) {
810 case NameServer_DID:
811 mbox->mbox_cmpl =
812 lpfc_mbx_cmpl_ns_reg_login;
813 break;
814 case FDMI_DID:
815 mbox->mbox_cmpl =
816 lpfc_mbx_cmpl_fdmi_reg_login;
817 break;
818 default:
819 mbox->mbox_cmpl =
820 lpfc_mbx_cmpl_reg_login;
821 }
822 mbox->context2 = ndlp;
823 if (lpfc_sli_issue_mbox(phba, mbox,
824 (MBX_NOWAIT | MBX_STOP_IOCB))
825 != MBX_NOT_FINISHED) {
826 ndlp->nlp_state =
827 NLP_STE_REG_LOGIN_ISSUE;
828 lpfc_nlp_list(phba, ndlp,
829 NLP_REGLOGIN_LIST);
830 return ndlp->nlp_state;
831 }
832 mempool_free(mbox, phba->mbox_mem_pool);
833 } else {
834 mempool_free(mbox, phba->mbox_mem_pool);
835 }
836
837
838 out:
839 /* Free this node since the driver cannot login or has the wrong
840 sparm */
841 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
842 return NLP_STE_FREED_NODE;
843 }
844
845 static uint32_t
846 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
847 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
848 {
849 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
850 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
851 return ndlp->nlp_state;
852 }
853 else {
854 /* software abort outstanding PLOGI */
855 lpfc_els_abort(phba, ndlp, 1);
856
857 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
858 return NLP_STE_FREED_NODE;
859 }
860 }
861
862 static uint32_t
863 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
864 struct lpfc_nodelist * ndlp, void *arg,
865 uint32_t evt)
866 {
867 /* software abort outstanding PLOGI */
868 lpfc_els_abort(phba, ndlp, 1);
869
870 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
871 ndlp->nlp_state = NLP_STE_NPR_NODE;
872 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
873 spin_lock_irq(phba->host->host_lock);
874 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
875 spin_unlock_irq(phba->host->host_lock);
876
877 return ndlp->nlp_state;
878 }
879
880 static uint32_t
881 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
882 struct lpfc_nodelist * ndlp, void *arg,
883 uint32_t evt)
884 {
885 struct lpfc_iocbq *cmdiocb;
886
887 /* software abort outstanding ADISC */
888 lpfc_els_abort(phba, ndlp, 1);
889
890 cmdiocb = (struct lpfc_iocbq *) arg;
891
892 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
893 return ndlp->nlp_state;
894 }
895 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
896 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
897 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
898 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
899
900 return ndlp->nlp_state;
901 }
902
903 static uint32_t
904 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
905 struct lpfc_nodelist * ndlp, void *arg,
906 uint32_t evt)
907 {
908 struct lpfc_iocbq *cmdiocb;
909
910 cmdiocb = (struct lpfc_iocbq *) arg;
911
912 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
913 return ndlp->nlp_state;
914 }
915
916 static uint32_t
917 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
918 struct lpfc_nodelist * ndlp, void *arg,
919 uint32_t evt)
920 {
921 struct lpfc_iocbq *cmdiocb;
922
923 cmdiocb = (struct lpfc_iocbq *) arg;
924
925 /* software abort outstanding ADISC */
926 lpfc_els_abort(phba, ndlp, 0);
927
928 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
929 return ndlp->nlp_state;
930 }
931
932 static uint32_t
933 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
934 struct lpfc_nodelist * ndlp, void *arg,
935 uint32_t evt)
936 {
937 struct lpfc_iocbq *cmdiocb;
938
939 cmdiocb = (struct lpfc_iocbq *) arg;
940
941 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
942 return ndlp->nlp_state;
943 }
944
945 static uint32_t
946 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
947 struct lpfc_nodelist * ndlp, void *arg,
948 uint32_t evt)
949 {
950 struct lpfc_iocbq *cmdiocb;
951
952 cmdiocb = (struct lpfc_iocbq *) arg;
953
954 /* Treat like rcv logo */
955 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
956 return ndlp->nlp_state;
957 }
958
959 static uint32_t
960 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
961 struct lpfc_nodelist * ndlp, void *arg,
962 uint32_t evt)
963 {
964 struct lpfc_iocbq *cmdiocb, *rspiocb;
965 IOCB_t *irsp;
966 ADISC *ap;
967
968 cmdiocb = (struct lpfc_iocbq *) arg;
969 rspiocb = cmdiocb->context_un.rsp_iocb;
970
971 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
972 irsp = &rspiocb->iocb;
973
974 if ((irsp->ulpStatus) ||
975 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
976 /* 1 sec timeout */
977 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
978 spin_lock_irq(phba->host->host_lock);
979 ndlp->nlp_flag |= NLP_DELAY_TMO;
980 spin_unlock_irq(phba->host->host_lock);
981 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
982
983 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
984 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
985
986 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
987 ndlp->nlp_state = NLP_STE_NPR_NODE;
988 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
989 lpfc_unreg_rpi(phba, ndlp);
990 return ndlp->nlp_state;
991 }
992
993 if (ndlp->nlp_type & NLP_FCP_TARGET) {
994 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
995 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
996 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
997 } else {
998 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
999 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1000 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1001 }
1002 return ndlp->nlp_state;
1003 }
1004
1005 static uint32_t
1006 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
1007 struct lpfc_nodelist * ndlp, void *arg,
1008 uint32_t evt)
1009 {
1010 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1011 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1012 return ndlp->nlp_state;
1013 }
1014 else {
1015 /* software abort outstanding ADISC */
1016 lpfc_els_abort(phba, ndlp, 1);
1017
1018 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1019 return NLP_STE_FREED_NODE;
1020 }
1021 }
1022
1023 static uint32_t
1024 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
1025 struct lpfc_nodelist * ndlp, void *arg,
1026 uint32_t evt)
1027 {
1028 /* software abort outstanding ADISC */
1029 lpfc_els_abort(phba, ndlp, 1);
1030
1031 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1032 ndlp->nlp_state = NLP_STE_NPR_NODE;
1033 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1034 spin_lock_irq(phba->host->host_lock);
1035 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1036 ndlp->nlp_flag |= NLP_NPR_ADISC;
1037 spin_unlock_irq(phba->host->host_lock);
1038
1039 return ndlp->nlp_state;
1040 }
1041
1042 static uint32_t
1043 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
1044 struct lpfc_nodelist * ndlp, void *arg,
1045 uint32_t evt)
1046 {
1047 struct lpfc_iocbq *cmdiocb;
1048
1049 cmdiocb = (struct lpfc_iocbq *) arg;
1050
1051 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1052 return ndlp->nlp_state;
1053 }
1054
1055 static uint32_t
1056 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1057 struct lpfc_nodelist * ndlp, void *arg,
1058 uint32_t evt)
1059 {
1060 struct lpfc_iocbq *cmdiocb;
1061
1062 cmdiocb = (struct lpfc_iocbq *) arg;
1063
1064 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1065 return ndlp->nlp_state;
1066 }
1067
1068 static uint32_t
1069 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1070 struct lpfc_nodelist * ndlp, void *arg,
1071 uint32_t evt)
1072 {
1073 struct lpfc_iocbq *cmdiocb;
1074
1075 cmdiocb = (struct lpfc_iocbq *) arg;
1076
1077 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1078 return ndlp->nlp_state;
1079 }
1080
1081 static uint32_t
1082 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1083 struct lpfc_nodelist * ndlp, void *arg,
1084 uint32_t evt)
1085 {
1086 struct lpfc_iocbq *cmdiocb;
1087
1088 cmdiocb = (struct lpfc_iocbq *) arg;
1089
1090 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1091 return ndlp->nlp_state;
1092 }
1093
1094 static uint32_t
1095 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1096 struct lpfc_nodelist * ndlp, void *arg,
1097 uint32_t evt)
1098 {
1099 struct lpfc_iocbq *cmdiocb;
1100
1101 cmdiocb = (struct lpfc_iocbq *) arg;
1102 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1103 return ndlp->nlp_state;
1104 }
1105
1106 static uint32_t
1107 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1108 struct lpfc_nodelist * ndlp,
1109 void *arg, uint32_t evt)
1110 {
1111 LPFC_MBOXQ_t *pmb;
1112 MAILBOX_t *mb;
1113 uint32_t did;
1114
1115 pmb = (LPFC_MBOXQ_t *) arg;
1116 mb = &pmb->mb;
1117 did = mb->un.varWords[1];
1118 if (mb->mbxStatus) {
1119 /* RegLogin failed */
1120 lpfc_printf_log(phba,
1121 KERN_ERR,
1122 LOG_DISCOVERY,
1123 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1124 phba->brd_no,
1125 did, mb->mbxStatus, phba->hba_state);
1126
1127 /*
1128 * If RegLogin failed due to lack of HBA resources do not
1129 * retry discovery.
1130 */
1131 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1132 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
1133 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
1134 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
1135 return ndlp->nlp_state;
1136 }
1137
1138 /* Put ndlp in npr list set plogi timer for 1 sec */
1139 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1140 spin_lock_irq(phba->host->host_lock);
1141 ndlp->nlp_flag |= NLP_DELAY_TMO;
1142 spin_unlock_irq(phba->host->host_lock);
1143 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1144
1145 lpfc_issue_els_logo(phba, ndlp, 0);
1146 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1147 ndlp->nlp_state = NLP_STE_NPR_NODE;
1148 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1149 return ndlp->nlp_state;
1150 }
1151
1152 ndlp->nlp_rpi = mb->un.varWords[0];
1153
1154 /* Only if we are not a fabric nport do we issue PRLI */
1155 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1156 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1157 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1158 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1159 lpfc_issue_els_prli(phba, ndlp, 0);
1160 } else {
1161 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1162 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1163 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1164 }
1165 return ndlp->nlp_state;
1166 }
1167
1168 static uint32_t
1169 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1170 struct lpfc_nodelist * ndlp, void *arg,
1171 uint32_t evt)
1172 {
1173 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1174 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1175 return ndlp->nlp_state;
1176 }
1177 else {
1178 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1179 return NLP_STE_FREED_NODE;
1180 }
1181 }
1182
1183 static uint32_t
1184 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1185 struct lpfc_nodelist * ndlp, void *arg,
1186 uint32_t evt)
1187 {
1188 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1189 ndlp->nlp_state = NLP_STE_NPR_NODE;
1190 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1191 spin_lock_irq(phba->host->host_lock);
1192 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1193 spin_unlock_irq(phba->host->host_lock);
1194 return ndlp->nlp_state;
1195 }
1196
1197 static uint32_t
1198 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1199 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1200 {
1201 struct lpfc_iocbq *cmdiocb;
1202
1203 cmdiocb = (struct lpfc_iocbq *) arg;
1204
1205 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1206 return ndlp->nlp_state;
1207 }
1208
1209 static uint32_t
1210 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1211 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1212 {
1213 struct lpfc_iocbq *cmdiocb;
1214
1215 cmdiocb = (struct lpfc_iocbq *) arg;
1216
1217 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1218 return ndlp->nlp_state;
1219 }
1220
1221 static uint32_t
1222 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1223 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1224 {
1225 struct lpfc_iocbq *cmdiocb;
1226
1227 cmdiocb = (struct lpfc_iocbq *) arg;
1228
1229 /* Software abort outstanding PRLI before sending acc */
1230 lpfc_els_abort(phba, ndlp, 1);
1231
1232 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1233 return ndlp->nlp_state;
1234 }
1235
1236 static uint32_t
1237 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1238 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1239 {
1240 struct lpfc_iocbq *cmdiocb;
1241
1242 cmdiocb = (struct lpfc_iocbq *) arg;
1243
1244 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1245 return ndlp->nlp_state;
1246 }
1247
1248 /* This routine is envoked when we rcv a PRLO request from a nport
1249 * we are logged into. We should send back a PRLO rsp setting the
1250 * appropriate bits.
1251 * NEXT STATE = PRLI_ISSUE
1252 */
1253 static uint32_t
1254 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1255 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1256 {
1257 struct lpfc_iocbq *cmdiocb;
1258
1259 cmdiocb = (struct lpfc_iocbq *) arg;
1260 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1261 return ndlp->nlp_state;
1262 }
1263
1264 static uint32_t
1265 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1266 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1267 {
1268 struct lpfc_iocbq *cmdiocb, *rspiocb;
1269 IOCB_t *irsp;
1270 PRLI *npr;
1271
1272 cmdiocb = (struct lpfc_iocbq *) arg;
1273 rspiocb = cmdiocb->context_un.rsp_iocb;
1274 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1275
1276 irsp = &rspiocb->iocb;
1277 if (irsp->ulpStatus) {
1278 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1279 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1280 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1281 return ndlp->nlp_state;
1282 }
1283
1284 /* Check out PRLI rsp */
1285 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1286 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1287 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1288 (npr->prliType == PRLI_FCP_TYPE)) {
1289 if (npr->initiatorFunc)
1290 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1291 if (npr->targetFunc)
1292 ndlp->nlp_type |= NLP_FCP_TARGET;
1293 if (npr->Retry)
1294 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1295 }
1296
1297 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1298 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1299 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1300 return ndlp->nlp_state;
1301 }
1302
1303 /*! lpfc_device_rm_prli_issue
1304 *
1305 * \pre
1306 * \post
1307 * \param phba
1308 * \param ndlp
1309 * \param arg
1310 * \param evt
1311 * \return uint32_t
1312 *
1313 * \b Description:
1314 * This routine is envoked when we a request to remove a nport we are in the
1315 * process of PRLIing. We should software abort outstanding prli, unreg
1316 * login, send a logout. We will change node state to UNUSED_NODE, put it
1317 * on plogi list so it can be freed when LOGO completes.
1318 *
1319 */
1320 static uint32_t
1321 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1322 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1323 {
1324 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1325 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1326 return ndlp->nlp_state;
1327 }
1328 else {
1329 /* software abort outstanding PLOGI */
1330 lpfc_els_abort(phba, ndlp, 1);
1331
1332 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1333 return NLP_STE_FREED_NODE;
1334 }
1335 }
1336
1337
1338 /*! lpfc_device_recov_prli_issue
1339 *
1340 * \pre
1341 * \post
1342 * \param phba
1343 * \param ndlp
1344 * \param arg
1345 * \param evt
1346 * \return uint32_t
1347 *
1348 * \b Description:
1349 * The routine is envoked when the state of a device is unknown, like
1350 * during a link down. We should remove the nodelist entry from the
1351 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1352 * outstanding PRLI command, then free the node entry.
1353 */
1354 static uint32_t
1355 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1356 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1357 {
1358 /* software abort outstanding PRLI */
1359 lpfc_els_abort(phba, ndlp, 1);
1360
1361 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1362 ndlp->nlp_state = NLP_STE_NPR_NODE;
1363 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1364 spin_lock_irq(phba->host->host_lock);
1365 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1366 spin_unlock_irq(phba->host->host_lock);
1367 return ndlp->nlp_state;
1368 }
1369
1370 static uint32_t
1371 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1372 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1373 {
1374 struct lpfc_iocbq *cmdiocb;
1375
1376 cmdiocb = (struct lpfc_iocbq *) arg;
1377
1378 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1379 return ndlp->nlp_state;
1380 }
1381
1382 static uint32_t
1383 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1384 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1385 {
1386 struct lpfc_iocbq *cmdiocb;
1387
1388 cmdiocb = (struct lpfc_iocbq *) arg;
1389
1390 lpfc_rcv_prli(phba, ndlp, cmdiocb);
1391 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1392 return ndlp->nlp_state;
1393 }
1394
1395 static uint32_t
1396 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1397 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1398 {
1399 struct lpfc_iocbq *cmdiocb;
1400
1401 cmdiocb = (struct lpfc_iocbq *) arg;
1402
1403 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1404 return ndlp->nlp_state;
1405 }
1406
1407 static uint32_t
1408 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1409 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1410 {
1411 struct lpfc_iocbq *cmdiocb;
1412
1413 cmdiocb = (struct lpfc_iocbq *) arg;
1414
1415 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1416 return ndlp->nlp_state;
1417 }
1418
1419 static uint32_t
1420 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1421 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1422 {
1423 struct lpfc_iocbq *cmdiocb;
1424
1425 cmdiocb = (struct lpfc_iocbq *) arg;
1426
1427 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1428 return ndlp->nlp_state;
1429 }
1430
1431 static uint32_t
1432 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1433 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1434 {
1435 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1436 ndlp->nlp_state = NLP_STE_NPR_NODE;
1437 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1438 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1439 lpfc_disc_set_adisc(phba, ndlp);
1440
1441 return ndlp->nlp_state;
1442 }
1443
1444 static uint32_t
1445 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1446 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1447 {
1448 struct lpfc_iocbq *cmdiocb;
1449
1450 cmdiocb = (struct lpfc_iocbq *) arg;
1451
1452 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1453 return ndlp->nlp_state;
1454 }
1455
1456 static uint32_t
1457 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1458 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1459 {
1460 struct lpfc_iocbq *cmdiocb;
1461
1462 cmdiocb = (struct lpfc_iocbq *) arg;
1463
1464 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1465 return ndlp->nlp_state;
1466 }
1467
1468 static uint32_t
1469 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1470 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1471 {
1472 struct lpfc_iocbq *cmdiocb;
1473
1474 cmdiocb = (struct lpfc_iocbq *) arg;
1475
1476 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1477 return ndlp->nlp_state;
1478 }
1479
1480 static uint32_t
1481 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1482 struct lpfc_nodelist * ndlp, void *arg,
1483 uint32_t evt)
1484 {
1485 struct lpfc_iocbq *cmdiocb;
1486
1487 cmdiocb = (struct lpfc_iocbq *) arg;
1488
1489 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1490 return ndlp->nlp_state;
1491 }
1492
1493 static uint32_t
1494 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1495 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1496 {
1497 struct lpfc_iocbq *cmdiocb;
1498
1499 cmdiocb = (struct lpfc_iocbq *) arg;
1500
1501 /* flush the target */
1502 spin_lock_irq(phba->host->host_lock);
1503 lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1504 ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1505 spin_unlock_irq(phba->host->host_lock);
1506
1507 /* Treat like rcv logo */
1508 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
1509 return ndlp->nlp_state;
1510 }
1511
1512 static uint32_t
1513 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1514 struct lpfc_nodelist * ndlp, void *arg,
1515 uint32_t evt)
1516 {
1517 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1518 ndlp->nlp_state = NLP_STE_NPR_NODE;
1519 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1520 spin_lock_irq(phba->host->host_lock);
1521 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1522 spin_unlock_irq(phba->host->host_lock);
1523 lpfc_disc_set_adisc(phba, ndlp);
1524 return ndlp->nlp_state;
1525 }
1526
1527 static uint32_t
1528 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1529 struct lpfc_nodelist * ndlp, void *arg,
1530 uint32_t evt)
1531 {
1532 struct lpfc_iocbq *cmdiocb;
1533
1534 cmdiocb = (struct lpfc_iocbq *) arg;
1535
1536 /* Ignore PLOGI if we have an outstanding LOGO */
1537 if (ndlp->nlp_flag & NLP_LOGO_SND) {
1538 return ndlp->nlp_state;
1539 }
1540
1541 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1542 spin_lock_irq(phba->host->host_lock);
1543 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1544 spin_unlock_irq(phba->host->host_lock);
1545 return ndlp->nlp_state;
1546 }
1547
1548 /* send PLOGI immediately, move to PLOGI issue state */
1549 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1550 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1551 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1552 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1553 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1554 }
1555
1556 return ndlp->nlp_state;
1557 }
1558
1559 static uint32_t
1560 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1561 struct lpfc_nodelist * ndlp, void *arg,
1562 uint32_t evt)
1563 {
1564 struct lpfc_iocbq *cmdiocb;
1565 struct ls_rjt stat;
1566
1567 cmdiocb = (struct lpfc_iocbq *) arg;
1568
1569 memset(&stat, 0, sizeof (struct ls_rjt));
1570 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1571 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1572 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1573
1574 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1575 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1576 spin_lock_irq(phba->host->host_lock);
1577 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1578 spin_unlock_irq(phba->host->host_lock);
1579 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1580 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1581 lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1582 lpfc_issue_els_adisc(phba, ndlp, 0);
1583 } else {
1584 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1585 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1586 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1587 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1588 }
1589
1590 }
1591 return ndlp->nlp_state;
1592 }
1593
1594 static uint32_t
1595 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1596 struct lpfc_nodelist * ndlp, void *arg,
1597 uint32_t evt)
1598 {
1599 struct lpfc_iocbq *cmdiocb;
1600
1601 cmdiocb = (struct lpfc_iocbq *) arg;
1602
1603 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1604 return ndlp->nlp_state;
1605 }
1606
1607 static uint32_t
1608 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1609 struct lpfc_nodelist * ndlp, void *arg,
1610 uint32_t evt)
1611 {
1612 struct lpfc_iocbq *cmdiocb;
1613
1614 cmdiocb = (struct lpfc_iocbq *) arg;
1615
1616 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1617
1618 /*
1619 * Do not start discovery if discovery is about to start
1620 * or discovery in progress for this node. Starting discovery
1621 * here will affect the counting of discovery threads.
1622 */
1623 if ((!(ndlp->nlp_flag & NLP_DELAY_TMO)) &&
1624 (ndlp->nlp_flag & NLP_NPR_2B_DISC)){
1625 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1626 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1627 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1628 lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1629 lpfc_issue_els_adisc(phba, ndlp, 0);
1630 } else {
1631 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1632 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1633 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1634 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1635 }
1636 }
1637 return ndlp->nlp_state;
1638 }
1639
1640 static uint32_t
1641 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1642 struct lpfc_nodelist * ndlp, void *arg,
1643 uint32_t evt)
1644 {
1645 struct lpfc_iocbq *cmdiocb;
1646
1647 cmdiocb = (struct lpfc_iocbq *) arg;
1648
1649 spin_lock_irq(phba->host->host_lock);
1650 ndlp->nlp_flag |= NLP_LOGO_ACC;
1651 spin_unlock_irq(phba->host->host_lock);
1652
1653 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1654
1655 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1656 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1657 spin_lock_irq(phba->host->host_lock);
1658 ndlp->nlp_flag |= NLP_DELAY_TMO;
1659 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1660 spin_unlock_irq(phba->host->host_lock);
1661 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1662 } else {
1663 spin_lock_irq(phba->host->host_lock);
1664 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1665 spin_unlock_irq(phba->host->host_lock);
1666 }
1667 return ndlp->nlp_state;
1668 }
1669
1670 static uint32_t
1671 lpfc_cmpl_plogi_npr_node(struct lpfc_hba * phba,
1672 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1673 {
1674 struct lpfc_iocbq *cmdiocb, *rspiocb;
1675 IOCB_t *irsp;
1676
1677 cmdiocb = (struct lpfc_iocbq *) arg;
1678 rspiocb = cmdiocb->context_un.rsp_iocb;
1679
1680 irsp = &rspiocb->iocb;
1681 if (irsp->ulpStatus) {
1682 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1683 return NLP_STE_FREED_NODE;
1684 }
1685 return ndlp->nlp_state;
1686 }
1687
1688 static uint32_t
1689 lpfc_cmpl_prli_npr_node(struct lpfc_hba * phba,
1690 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1691 {
1692 struct lpfc_iocbq *cmdiocb, *rspiocb;
1693 IOCB_t *irsp;
1694
1695 cmdiocb = (struct lpfc_iocbq *) arg;
1696 rspiocb = cmdiocb->context_un.rsp_iocb;
1697
1698 irsp = &rspiocb->iocb;
1699 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1700 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1701 return NLP_STE_FREED_NODE;
1702 }
1703 return ndlp->nlp_state;
1704 }
1705
1706 static uint32_t
1707 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1708 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1709 {
1710 lpfc_unreg_rpi(phba, ndlp);
1711 /* This routine does nothing, just return the current state */
1712 return ndlp->nlp_state;
1713 }
1714
1715 static uint32_t
1716 lpfc_cmpl_adisc_npr_node(struct lpfc_hba * phba,
1717 struct lpfc_nodelist * ndlp, void *arg,
1718 uint32_t evt)
1719 {
1720 struct lpfc_iocbq *cmdiocb, *rspiocb;
1721 IOCB_t *irsp;
1722
1723 cmdiocb = (struct lpfc_iocbq *) arg;
1724 rspiocb = cmdiocb->context_un.rsp_iocb;
1725
1726 irsp = &rspiocb->iocb;
1727 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1728 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1729 return NLP_STE_FREED_NODE;
1730 }
1731 return ndlp->nlp_state;
1732 }
1733
1734 static uint32_t
1735 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1736 struct lpfc_nodelist * ndlp, void *arg,
1737 uint32_t evt)
1738 {
1739 LPFC_MBOXQ_t *pmb;
1740 MAILBOX_t *mb;
1741
1742 pmb = (LPFC_MBOXQ_t *) arg;
1743 mb = &pmb->mb;
1744
1745 if (!mb->mbxStatus)
1746 ndlp->nlp_rpi = mb->un.varWords[0];
1747 else {
1748 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1749 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1750 return NLP_STE_FREED_NODE;
1751 }
1752 }
1753 return ndlp->nlp_state;
1754 }
1755
1756 static uint32_t
1757 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1758 struct lpfc_nodelist * ndlp, void *arg,
1759 uint32_t evt)
1760 {
1761 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1762 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1763 return ndlp->nlp_state;
1764 }
1765 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1766 return NLP_STE_FREED_NODE;
1767 }
1768
1769 static uint32_t
1770 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1771 struct lpfc_nodelist * ndlp, void *arg,
1772 uint32_t evt)
1773 {
1774 spin_lock_irq(phba->host->host_lock);
1775 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1776 spin_unlock_irq(phba->host->host_lock);
1777 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1778 lpfc_cancel_retry_delay_tmo(phba, ndlp);
1779 }
1780 return ndlp->nlp_state;
1781 }
1782
1783
1784 /* This next section defines the NPort Discovery State Machine */
1785
1786 /* There are 4 different double linked lists nodelist entries can reside on.
1787 * The plogi list and adisc list are used when Link Up discovery or RSCN
1788 * processing is needed. Each list holds the nodes that we will send PLOGI
1789 * or ADISC on. These lists will keep track of what nodes will be effected
1790 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1791 * The unmapped_list will contain all nodes that we have successfully logged
1792 * into at the Fibre Channel level. The mapped_list will contain all nodes
1793 * that are mapped FCP targets.
1794 */
1795 /*
1796 * The bind list is a list of undiscovered (potentially non-existent) nodes
1797 * that we have saved binding information on. This information is used when
1798 * nodes transition from the unmapped to the mapped list.
1799 */
1800 /* For UNUSED_NODE state, the node has just been allocated .
1801 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1802 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1803 * and put on the unmapped list. For ADISC processing, the node is taken off
1804 * the ADISC list and placed on either the mapped or unmapped list (depending
1805 * on its previous state). Once on the unmapped list, a PRLI is issued and the
1806 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1807 * changed to UNMAPPED_NODE. If the completion indicates a mapped
1808 * node, the node is taken off the unmapped list. The binding list is checked
1809 * for a valid binding, or a binding is automatically assigned. If binding
1810 * assignment is unsuccessful, the node is left on the unmapped list. If
1811 * binding assignment is successful, the associated binding list entry (if
1812 * any) is removed, and the node is placed on the mapped list.
1813 */
1814 /*
1815 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1816 * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1817 * expire, all effected nodes will receive a DEVICE_RM event.
1818 */
1819 /*
1820 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1821 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
1822 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1823 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1824 * we will first process the ADISC list. 32 entries are processed initially and
1825 * ADISC is initited for each one. Completions / Events for each node are
1826 * funnelled thru the state machine. As each node finishes ADISC processing, it
1827 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1828 * waiting, and the ADISC list count is identically 0, then we are done. For
1829 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1830 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1831 * list. 32 entries are processed initially and PLOGI is initited for each one.
1832 * Completions / Events for each node are funnelled thru the state machine. As
1833 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1834 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1835 * indentically 0, then we are done. We have now completed discovery / RSCN
1836 * handling. Upon completion, ALL nodes should be on either the mapped or
1837 * unmapped lists.
1838 */
1839
1840 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1841 (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1842 /* Action routine Event Current State */
1843 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
1844 lpfc_rcv_els_unused_node, /* RCV_PRLI */
1845 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
1846 lpfc_rcv_els_unused_node, /* RCV_ADISC */
1847 lpfc_rcv_els_unused_node, /* RCV_PDISC */
1848 lpfc_rcv_els_unused_node, /* RCV_PRLO */
1849 lpfc_disc_illegal, /* CMPL_PLOGI */
1850 lpfc_disc_illegal, /* CMPL_PRLI */
1851 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
1852 lpfc_disc_illegal, /* CMPL_ADISC */
1853 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1854 lpfc_device_rm_unused_node, /* DEVICE_RM */
1855 lpfc_disc_illegal, /* DEVICE_RECOVERY */
1856
1857 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
1858 lpfc_rcv_els_plogi_issue, /* RCV_PRLI */
1859 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
1860 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
1861 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
1862 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
1863 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
1864 lpfc_disc_illegal, /* CMPL_PRLI */
1865 lpfc_disc_illegal, /* CMPL_LOGO */
1866 lpfc_disc_illegal, /* CMPL_ADISC */
1867 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1868 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
1869 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
1870
1871 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
1872 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
1873 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
1874 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
1875 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
1876 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
1877 lpfc_disc_illegal, /* CMPL_PLOGI */
1878 lpfc_disc_illegal, /* CMPL_PRLI */
1879 lpfc_disc_illegal, /* CMPL_LOGO */
1880 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
1881 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1882 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
1883 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
1884
1885 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
1886 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
1887 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
1888 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
1889 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
1890 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
1891 lpfc_disc_illegal, /* CMPL_PLOGI */
1892 lpfc_disc_illegal, /* CMPL_PRLI */
1893 lpfc_disc_illegal, /* CMPL_LOGO */
1894 lpfc_disc_illegal, /* CMPL_ADISC */
1895 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
1896 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
1897 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1898
1899 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
1900 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
1901 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
1902 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
1903 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
1904 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
1905 lpfc_disc_illegal, /* CMPL_PLOGI */
1906 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
1907 lpfc_disc_illegal, /* CMPL_LOGO */
1908 lpfc_disc_illegal, /* CMPL_ADISC */
1909 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1910 lpfc_device_rm_prli_issue, /* DEVICE_RM */
1911 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
1912
1913 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
1914 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
1915 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
1916 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
1917 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
1918 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
1919 lpfc_disc_illegal, /* CMPL_PLOGI */
1920 lpfc_disc_illegal, /* CMPL_PRLI */
1921 lpfc_disc_illegal, /* CMPL_LOGO */
1922 lpfc_disc_illegal, /* CMPL_ADISC */
1923 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1924 lpfc_disc_illegal, /* DEVICE_RM */
1925 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
1926
1927 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
1928 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
1929 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
1930 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
1931 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
1932 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
1933 lpfc_disc_illegal, /* CMPL_PLOGI */
1934 lpfc_disc_illegal, /* CMPL_PRLI */
1935 lpfc_disc_illegal, /* CMPL_LOGO */
1936 lpfc_disc_illegal, /* CMPL_ADISC */
1937 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1938 lpfc_disc_illegal, /* DEVICE_RM */
1939 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
1940
1941 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
1942 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
1943 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
1944 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
1945 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
1946 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
1947 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
1948 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
1949 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
1950 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
1951 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
1952 lpfc_device_rm_npr_node, /* DEVICE_RM */
1953 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
1954 };
1955
1956 int
1957 lpfc_disc_state_machine(struct lpfc_hba * phba,
1958 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1959 {
1960 uint32_t cur_state, rc;
1961 uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1962 uint32_t);
1963
1964 ndlp->nlp_disc_refcnt++;
1965 cur_state = ndlp->nlp_state;
1966
1967 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1968 lpfc_printf_log(phba,
1969 KERN_INFO,
1970 LOG_DISCOVERY,
1971 "%d:0211 DSM in event x%x on NPort x%x in state %d "
1972 "Data: x%x\n",
1973 phba->brd_no,
1974 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1975
1976 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1977 rc = (func) (phba, ndlp, arg, evt);
1978
1979 /* DSM out state <rc> on NPort <nlp_DID> */
1980 lpfc_printf_log(phba,
1981 KERN_INFO,
1982 LOG_DISCOVERY,
1983 "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1984 phba->brd_no,
1985 rc, ndlp->nlp_DID, ndlp->nlp_flag);
1986
1987 ndlp->nlp_disc_refcnt--;
1988
1989 /* Check to see if ndlp removal is deferred */
1990 if ((ndlp->nlp_disc_refcnt == 0)
1991 && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1992 spin_lock_irq(phba->host->host_lock);
1993 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1994 spin_unlock_irq(phba->host->host_lock);
1995 lpfc_nlp_remove(phba, ndlp);
1996 return NLP_STE_FREED_NODE;
1997 }
1998 if (rc == NLP_STE_FREED_NODE)
1999 return NLP_STE_FREED_NODE;
2000 return rc;
2001 }
Linux kernel - Deliverables
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