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[SCSI] lpfc 8.1.2: Add module parameter to limit number of outstanding commands per...
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
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dea3101e 1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
c44ce173
JSEC		 3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2005 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
dea3101e 6 * www.emulex.com *
c44ce173 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
dea3101e 8 * *
9 * This program is free software; you can redistribute it and/or *
c44ce173
JSEC		 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. *
dea3101e 20 *******************************************************************/
21
dea3101e 22#include <linux/blkdev.h>
23#include <linux/pci.h>
24#include <linux/interrupt.h>
25
91886523 26#include <scsi/scsi.h>
dea3101e 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. */
41static int
42lpfc_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
dea3101e 58int
59lpfc_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;
2fb70f79
JSEC		 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 */
dea3101e 73 if (sp->cls1.classValid) {
2fb70f79
JSEC		 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) {
dea3101e 79 sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
2fb70f79
JSEC		 80 sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
81 }
dea3101e 82 } else if (class == CLASS1) {
2fb70f79 83 return 0;
dea3101e 84 }
85
86 if (sp->cls2.classValid) {
2fb70f79
JSEC		 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) {
dea3101e 92 sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
2fb70f79
JSEC		 93 sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
94 }
dea3101e 95 } else if (class == CLASS2) {
2fb70f79 96 return 0;
dea3101e 97 }
98
99 if (sp->cls3.classValid) {
2fb70f79
JSEC		 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) {
dea3101e 105 sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
2fb70f79
JSEC		 106 sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
107 }
dea3101e 108 } else if (class == CLASS3) {
2fb70f79 109 return 0;
dea3101e 110 }
111
2fb70f79
JSEC		 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) {
dea3101e 120 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
2fb70f79
JSEC		 121 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
122 (hsp->cmn.bbRcvSizeMsb & 0x0F);
123 }
dea3101e 124
dea3101e 125 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
126 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
2fb70f79 127 return 1;
dea3101e 128}
129
130static void *
131lpfc_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 }
154 else {
155 /* Force ulpStatus error since we are returning NULL ptr */
156 if (!(irsp->ulpStatus)) {
157 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
158 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
159 }
160 ptr = NULL;
161 }
162 return (ptr);
163}
164
165
166/*
167 * Free resources / clean up outstanding I/Os
168 * associated with a LPFC_NODELIST entry. This
169 * routine effectively results in a "software abort".
170 */
171int
172lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
173 int send_abts)
174{
175 struct lpfc_sli *psli;
176 struct lpfc_sli_ring *pring;
177 struct lpfc_iocbq *iocb, *next_iocb;
178 IOCB_t *icmd;
179 int found = 0;
180
181 /* Abort outstanding I/O on NPort <nlp_DID> */
182 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
183 "%d:0201 Abort outstanding I/O on NPort x%x "
184 "Data: x%x x%x x%x\n",
185 phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
186 ndlp->nlp_state, ndlp->nlp_rpi);
187
188 psli = &phba->sli;
189 pring = &psli->ring[LPFC_ELS_RING];
190
191 /* First check the txq */
192 do {
193 found = 0;
194 spin_lock_irq(phba->host->host_lock);
195 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
196 /* Check to see if iocb matches the nport we are looking
197 for */
198 if ((lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))) {
199 found = 1;
200 /* It matches, so deque and call compl with an
201 error */
202 list_del(&iocb->list);
203 pring->txq_cnt--;
204 if (iocb->iocb_cmpl) {
205 icmd = &iocb->iocb;
206 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
207 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
208 spin_unlock_irq(phba->host->host_lock);
209 (iocb->iocb_cmpl) (phba, iocb, iocb);
210 spin_lock_irq(phba->host->host_lock);
604a3e30
JB		 211 } else
212 lpfc_sli_release_iocbq(phba, iocb);
dea3101e 213 break;
214 }
215 }
216 spin_unlock_irq(phba->host->host_lock);
217 } while (found);
218
219 /* Everything on txcmplq will be returned by firmware
220 * with a no rpi / linkdown / abort error. For ring 0,
221 * ELS discovery, we want to get rid of it right here.
222 */
223 /* Next check the txcmplq */
224 do {
225 found = 0;
226 spin_lock_irq(phba->host->host_lock);
227 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
228 list) {
229 /* Check to see if iocb matches the nport we are looking
230 for */
231 if ((lpfc_check_sli_ndlp (phba, pring, iocb, ndlp))) {
232 found = 1;
233 /* It matches, so deque and call compl with an
234 error */
235 list_del(&iocb->list);
236 pring->txcmplq_cnt--;
237
238 icmd = &iocb->iocb;
239 /* If the driver is completing an ELS
240 * command early, flush it out of the firmware.
241 */
242 if (send_abts &&
243 (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) &&
244 (icmd->un.elsreq64.bdl.ulpIoTag32)) {
245 lpfc_sli_issue_abort_iotag32(phba,
246 pring, iocb);
247 }
248 if (iocb->iocb_cmpl) {
249 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
250 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
251 spin_unlock_irq(phba->host->host_lock);
252 (iocb->iocb_cmpl) (phba, iocb, iocb);
253 spin_lock_irq(phba->host->host_lock);
604a3e30
JB		 254 } else
255 lpfc_sli_release_iocbq(phba, iocb);
dea3101e 256 break;
257 }
258 }
259 spin_unlock_irq(phba->host->host_lock);
260 } while(found);
261
262 /* If we are delaying issuing an ELS command, cancel it */
263 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
264 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
265 del_timer_sync(&ndlp->nlp_delayfunc);
266 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
267 list_del_init(&ndlp->els_retry_evt.evt_listp);
268 }
269 return (0);
270}
271
272static int
273lpfc_rcv_plogi(struct lpfc_hba * phba,
274 struct lpfc_nodelist * ndlp,
275 struct lpfc_iocbq *cmdiocb)
276{
277 struct lpfc_dmabuf *pcmd;
278 uint32_t *lp;
279 IOCB_t *icmd;
280 struct serv_parm *sp;
281 LPFC_MBOXQ_t *mbox;
282 struct ls_rjt stat;
283 int rc;
284
285 memset(&stat, 0, sizeof (struct ls_rjt));
286 if (phba->hba_state <= LPFC_FLOGI) {
287 /* Before responding to PLOGI, check for pt2pt mode.
288 * If we are pt2pt, with an outstanding FLOGI, abort
289 * the FLOGI and resend it first.
290 */
291 if (phba->fc_flag & FC_PT2PT) {
292 lpfc_els_abort_flogi(phba);
293 if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
294 /* If the other side is supposed to initiate
295 * the PLOGI anyway, just ACC it now and
296 * move on with discovery.
297 */
298 phba->fc_edtov = FF_DEF_EDTOV;
299 phba->fc_ratov = FF_DEF_RATOV;
300 /* Start discovery - this should just do
301 CLEAR_LA */
302 lpfc_disc_start(phba);
303 }
304 else {
305 lpfc_initial_flogi(phba);
306 }
307 }
308 else {
309 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
310 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
311 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
312 ndlp);
313 return 0;
314 }
315 }
316 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
317 lp = (uint32_t *) pcmd->virt;
318 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
319 if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
320 /* Reject this request because invalid parameters */
321 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
322 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
323 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
324 return (0);
325 }
326 icmd = &cmdiocb->iocb;
327
328 /* PLOGI chkparm OK */
329 lpfc_printf_log(phba,
330 KERN_INFO,
331 LOG_ELS,
332 "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
333 phba->brd_no,
334 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
335 ndlp->nlp_rpi);
336
337 if ((phba->cfg_fcp_class == 2) &&
338 (sp->cls2.classValid)) {
339 ndlp->nlp_fcp_info |= CLASS2;
340 } else {
341 ndlp->nlp_fcp_info |= CLASS3;
342 }
343 ndlp->nlp_class_sup = 0;
344 if (sp->cls1.classValid)
345 ndlp->nlp_class_sup |= FC_COS_CLASS1;
346 if (sp->cls2.classValid)
347 ndlp->nlp_class_sup |= FC_COS_CLASS2;
348 if (sp->cls3.classValid)
349 ndlp->nlp_class_sup |= FC_COS_CLASS3;
350 if (sp->cls4.classValid)
351 ndlp->nlp_class_sup |= FC_COS_CLASS4;
352 ndlp->nlp_maxframe =
353 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
354
355 /* no need to reg_login if we are already in one of these states */
356 switch(ndlp->nlp_state) {
357 case NLP_STE_NPR_NODE:
358 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
359 break;
360 case NLP_STE_REG_LOGIN_ISSUE:
361 case NLP_STE_PRLI_ISSUE:
362 case NLP_STE_UNMAPPED_NODE:
363 case NLP_STE_MAPPED_NODE:
364 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
365 return (1);
366 }
367
368 if ((phba->fc_flag & FC_PT2PT)
369 && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
370 /* rcv'ed PLOGI decides what our NPortId will be */
371 phba->fc_myDID = icmd->un.rcvels.parmRo;
372 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
373 if (mbox == NULL)
374 goto out;
375 lpfc_config_link(phba, mbox);
376 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
377 rc = lpfc_sli_issue_mbox
378 (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
379 if (rc == MBX_NOT_FINISHED) {
380 mempool_free( mbox, phba->mbox_mem_pool);
381 goto out;
382 }
383
384 lpfc_can_disctmo(phba);
385 }
386 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
387 if (mbox == NULL)
388 goto out;
389
390 if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
391 (uint8_t *) sp, mbox, 0)) {
392 mempool_free( mbox, phba->mbox_mem_pool);
393 goto out;
394 }
395
396 /* ACC PLOGI rsp command needs to execute first,
397 * queue this mbox command to be processed later.
398 */
399 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
400 mbox->context2 = ndlp;
401 ndlp->nlp_flag |= NLP_ACC_REGLOGIN;
402
403 /* If there is an outstanding PLOGI issued, abort it before
404 * sending ACC rsp to PLOGI recieved.
405 */
406 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
407 /* software abort outstanding PLOGI */
408 lpfc_els_abort(phba, ndlp, 1);
409 }
410 ndlp->nlp_flag |= NLP_RCV_PLOGI;
411 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
412 return (1);
413
414out:
415 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
416 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
417 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
418 return (0);
419}
420
421static int
422lpfc_rcv_padisc(struct lpfc_hba * phba,
423 struct lpfc_nodelist * ndlp,
424 struct lpfc_iocbq *cmdiocb)
425{
426 struct lpfc_dmabuf *pcmd;
427 struct serv_parm *sp;
428 struct lpfc_name *pnn, *ppn;
429 struct ls_rjt stat;
430 ADISC *ap;
431 IOCB_t *icmd;
432 uint32_t *lp;
433 uint32_t cmd;
434
435 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
436 lp = (uint32_t *) pcmd->virt;
437
438 cmd = *lp++;
439 if (cmd == ELS_CMD_ADISC) {
440 ap = (ADISC *) lp;
441 pnn = (struct lpfc_name *) & ap->nodeName;
442 ppn = (struct lpfc_name *) & ap->portName;
443 } else {
444 sp = (struct serv_parm *) lp;
445 pnn = (struct lpfc_name *) & sp->nodeName;
446 ppn = (struct lpfc_name *) & sp->portName;
447 }
448
449 icmd = &cmdiocb->iocb;
450 if ((icmd->ulpStatus == 0) &&
451 (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
452 if (cmd == ELS_CMD_ADISC) {
453 lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
454 }
455 else {
456 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
457 NULL, 0);
458 }
459 return (1);
460 }
461 /* Reject this request because invalid parameters */
462 stat.un.b.lsRjtRsvd0 = 0;
463 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
464 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
465 stat.un.b.vendorUnique = 0;
466 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
467
468 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
469 /* 1 sec timeout */
470 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
471
472 spin_lock_irq(phba->host->host_lock);
473 ndlp->nlp_flag |= NLP_DELAY_TMO;
474 spin_unlock_irq(phba->host->host_lock);
475 ndlp->nlp_state = NLP_STE_NPR_NODE;
476 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
477 return (0);
478}
479
480static int
481lpfc_rcv_logo(struct lpfc_hba * phba,
482 struct lpfc_nodelist * ndlp,
483 struct lpfc_iocbq *cmdiocb)
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 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
491
492 if (!(ndlp->nlp_type & NLP_FABRIC)) {
493 /* Only try to re-login if this is NOT a Fabric Node */
494 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
495 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
496 spin_lock_irq(phba->host->host_lock);
497 ndlp->nlp_flag |= NLP_DELAY_TMO;
498 spin_unlock_irq(phba->host->host_lock);
499 }
500
501 ndlp->nlp_state = NLP_STE_NPR_NODE;
502 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
503
504 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
505 /* The driver has to wait until the ACC completes before it continues
506 * processing the LOGO. The action will resume in
507 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
508 * unreg_login, the driver waits so the ACC does not get aborted.
509 */
510 return (0);
511}
512
513static void
514lpfc_rcv_prli(struct lpfc_hba * phba,
515 struct lpfc_nodelist * ndlp,
516 struct lpfc_iocbq *cmdiocb)
517{
518 struct lpfc_dmabuf *pcmd;
519 uint32_t *lp;
520 PRLI *npr;
521 struct fc_rport *rport = ndlp->rport;
522 u32 roles;
523
524 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
525 lp = (uint32_t *) pcmd->virt;
526 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
527
528 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
529 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
530 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
531 (npr->prliType == PRLI_FCP_TYPE)) {
532 if (npr->initiatorFunc)
533 ndlp->nlp_type |= NLP_FCP_INITIATOR;
534 if (npr->targetFunc)
535 ndlp->nlp_type |= NLP_FCP_TARGET;
536 if (npr->Retry)
537 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
538 }
539 if (rport) {
540 /* We need to update the rport role values */
541 roles = FC_RPORT_ROLE_UNKNOWN;
542 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
543 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
544 if (ndlp->nlp_type & NLP_FCP_TARGET)
545 roles |= FC_RPORT_ROLE_FCP_TARGET;
546 fc_remote_port_rolechg(rport, roles);
547 }
548}
549
550static uint32_t
551lpfc_disc_set_adisc(struct lpfc_hba * phba,
552 struct lpfc_nodelist * ndlp)
553{
554 /* Check config parameter use-adisc or FCP-2 */
555 if ((phba->cfg_use_adisc == 0) &&
556 !(phba->fc_flag & FC_RSCN_MODE)) {
557 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
558 return (0);
559 }
560 spin_lock_irq(phba->host->host_lock);
561 ndlp->nlp_flag |= NLP_NPR_ADISC;
562 spin_unlock_irq(phba->host->host_lock);
563 return (1);
564}
565
566static uint32_t
567lpfc_disc_noop(struct lpfc_hba * phba,
568 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
569{
570 /* This routine does nothing, just return the current state */
571 return (ndlp->nlp_state);
572}
573
574static uint32_t
575lpfc_disc_illegal(struct lpfc_hba * phba,
576 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
577{
578 lpfc_printf_log(phba,
579 KERN_ERR,
580 LOG_DISCOVERY,
581 "%d:0253 Illegal State Transition: node x%x event x%x, "
582 "state x%x Data: x%x x%x\n",
583 phba->brd_no,
584 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
585 ndlp->nlp_flag);
586 return (ndlp->nlp_state);
587}
588
589/* Start of Discovery State Machine routines */
590
591static uint32_t
592lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
593 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
594{
595 struct lpfc_iocbq *cmdiocb;
596
597 cmdiocb = (struct lpfc_iocbq *) arg;
598
599 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
600 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
601 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
602 return (ndlp->nlp_state);
603 }
604 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
605 return (NLP_STE_FREED_NODE);
606}
607
608static uint32_t
609lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
610 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
611{
612 lpfc_issue_els_logo(phba, ndlp, 0);
613 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
614 return (ndlp->nlp_state);
615}
616
617static uint32_t
618lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
619 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
620{
621 struct lpfc_iocbq *cmdiocb;
622
623 cmdiocb = (struct lpfc_iocbq *) arg;
624
625 spin_lock_irq(phba->host->host_lock);
626 ndlp->nlp_flag |= NLP_LOGO_ACC;
627 spin_unlock_irq(phba->host->host_lock);
628 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
629 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
630
631 return (ndlp->nlp_state);
632}
633
634static uint32_t
635lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
636 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
637{
638 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
639 return (NLP_STE_FREED_NODE);
640}
641
642static uint32_t
643lpfc_device_rm_unused_node(struct lpfc_hba * phba,
644 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
645{
646 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
647 return (NLP_STE_FREED_NODE);
648}
649
650static uint32_t
651lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
652 void *arg, uint32_t evt)
653{
654 struct lpfc_iocbq *cmdiocb = arg;
655 struct lpfc_dmabuf *pcmd;
656 struct serv_parm *sp;
657 uint32_t *lp;
658 struct ls_rjt stat;
659 int port_cmp;
660
661 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
662 lp = (uint32_t *) pcmd->virt;
663 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
664
665 memset(&stat, 0, sizeof (struct ls_rjt));
666
667 /* For a PLOGI, we only accept if our portname is less
668 * than the remote portname.
669 */
670 phba->fc_stat.elsLogiCol++;
671 port_cmp = memcmp(&phba->fc_portname, &sp->portName,
672 sizeof (struct lpfc_name));
673
674 if (port_cmp >= 0) {
675 /* Reject this request because the remote node will accept
676 ours */
677 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
678 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
679 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
680 }
681 else {
682 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
683 } /* if our portname was less */
684
685 return (ndlp->nlp_state);
686}
687
688static uint32_t
689lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
690 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
691{
692 struct lpfc_iocbq *cmdiocb;
693
694 cmdiocb = (struct lpfc_iocbq *) arg;
695
696 /* software abort outstanding PLOGI */
697 lpfc_els_abort(phba, ndlp, 1);
698 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
699 spin_lock_irq(phba->host->host_lock);
700 ndlp->nlp_flag |= NLP_DELAY_TMO;
701 spin_unlock_irq(phba->host->host_lock);
702
703 if (evt == NLP_EVT_RCV_LOGO) {
704 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
705 }
706 else {
707 lpfc_issue_els_logo(phba, ndlp, 0);
708 }
709
710 /* Put ndlp in npr list set plogi timer for 1 sec */
711 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
712 ndlp->nlp_state = NLP_STE_NPR_NODE;
713 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
714
715 return (ndlp->nlp_state);
716}
717
718static uint32_t
719lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
720 struct lpfc_nodelist * ndlp, void *arg,
721 uint32_t evt)
722{
723 struct lpfc_iocbq *cmdiocb, *rspiocb;
724 struct lpfc_dmabuf *pcmd, *prsp;
725 uint32_t *lp;
726 IOCB_t *irsp;
727 struct serv_parm *sp;
728 LPFC_MBOXQ_t *mbox;
729
730 cmdiocb = (struct lpfc_iocbq *) arg;
731 rspiocb = cmdiocb->context_un.rsp_iocb;
732
733 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
734 return (ndlp->nlp_state);
735 }
736
737 irsp = &rspiocb->iocb;
738
739 if (irsp->ulpStatus)
740 goto out;
741
742 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
743
744 prsp = list_get_first(&pcmd->list,
745 struct lpfc_dmabuf,
746 list);
747 lp = (uint32_t *) prsp->virt;
748
749 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
750 if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
751 goto out;
752
753 /* PLOGI chkparm OK */
754 lpfc_printf_log(phba,
755 KERN_INFO,
756 LOG_ELS,
757 "%d:0121 PLOGI chkparm OK "
758 "Data: x%x x%x x%x x%x\n",
759 phba->brd_no,
760 ndlp->nlp_DID, ndlp->nlp_state,
761 ndlp->nlp_flag, ndlp->nlp_rpi);
762
763 if ((phba->cfg_fcp_class == 2) &&
764 (sp->cls2.classValid)) {
765 ndlp->nlp_fcp_info |= CLASS2;
766 } else {
767 ndlp->nlp_fcp_info |= CLASS3;
768 }
769 ndlp->nlp_class_sup = 0;
770 if (sp->cls1.classValid)
771 ndlp->nlp_class_sup |= FC_COS_CLASS1;
772 if (sp->cls2.classValid)
773 ndlp->nlp_class_sup |= FC_COS_CLASS2;
774 if (sp->cls3.classValid)
775 ndlp->nlp_class_sup |= FC_COS_CLASS3;
776 if (sp->cls4.classValid)
777 ndlp->nlp_class_sup |= FC_COS_CLASS4;
778 ndlp->nlp_maxframe =
779 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
780 sp->cmn.bbRcvSizeLsb;
781
782 if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
783 GFP_KERNEL)))
784 goto out;
785
786 lpfc_unreg_rpi(phba, ndlp);
787 if (lpfc_reg_login
788 (phba, irsp->un.elsreq64.remoteID,
789 (uint8_t *) sp, mbox, 0) == 0) {
790 /* set_slim mailbox command needs to
791 * execute first, queue this command to
792 * be processed later.
793 */
794 switch(ndlp->nlp_DID) {
795 case NameServer_DID:
796 mbox->mbox_cmpl =
797 lpfc_mbx_cmpl_ns_reg_login;
798 break;
799 case FDMI_DID:
800 mbox->mbox_cmpl =
801 lpfc_mbx_cmpl_fdmi_reg_login;
802 break;
803 default:
804 mbox->mbox_cmpl =
805 lpfc_mbx_cmpl_reg_login;
806 }
807 mbox->context2 = ndlp;
808 if (lpfc_sli_issue_mbox(phba, mbox,
809 (MBX_NOWAIT | MBX_STOP_IOCB))
810 != MBX_NOT_FINISHED) {
811 ndlp->nlp_state =
812 NLP_STE_REG_LOGIN_ISSUE;
813 lpfc_nlp_list(phba, ndlp,
814 NLP_REGLOGIN_LIST);
815 return (ndlp->nlp_state);
816 }
817 mempool_free(mbox, phba->mbox_mem_pool);
818 } else {
819 mempool_free(mbox, phba->mbox_mem_pool);
820 }
821
822
823 out:
824 /* Free this node since the driver cannot login or has the wrong
825 sparm */
826 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
827 return (NLP_STE_FREED_NODE);
828}
829
830static uint32_t
831lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
832 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
833{
834 /* software abort outstanding PLOGI */
835 lpfc_els_abort(phba, ndlp, 1);
836
837 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
838 return (NLP_STE_FREED_NODE);
839}
840
841static uint32_t
842lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
843 struct lpfc_nodelist * ndlp, void *arg,
844 uint32_t evt)
845{
846 /* software abort outstanding PLOGI */
847 lpfc_els_abort(phba, ndlp, 1);
848
849 ndlp->nlp_state = NLP_STE_NPR_NODE;
850 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
851 spin_lock_irq(phba->host->host_lock);
852 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
853 spin_unlock_irq(phba->host->host_lock);
854
855 return (ndlp->nlp_state);
856}
857
858static uint32_t
859lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
860 struct lpfc_nodelist * ndlp, void *arg,
861 uint32_t evt)
862{
863 struct lpfc_iocbq *cmdiocb;
864
865 /* software abort outstanding ADISC */
866 lpfc_els_abort(phba, ndlp, 1);
867
868 cmdiocb = (struct lpfc_iocbq *) arg;
869
870 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
871 return (ndlp->nlp_state);
872 }
873 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
874 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
875 lpfc_issue_els_plogi(phba, ndlp, 0);
876
877 return (ndlp->nlp_state);
878}
879
880static uint32_t
881lpfc_rcv_prli_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 cmdiocb = (struct lpfc_iocbq *) arg;
888
889 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
890 return (ndlp->nlp_state);
891}
892
893static uint32_t
894lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
895 struct lpfc_nodelist * ndlp, void *arg,
896 uint32_t evt)
897{
898 struct lpfc_iocbq *cmdiocb;
899
900 cmdiocb = (struct lpfc_iocbq *) arg;
901
902 /* software abort outstanding ADISC */
903 lpfc_els_abort(phba, ndlp, 0);
904
905 lpfc_rcv_logo(phba, ndlp, cmdiocb);
906 return (ndlp->nlp_state);
907}
908
909static uint32_t
910lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
911 struct lpfc_nodelist * ndlp, void *arg,
912 uint32_t evt)
913{
914 struct lpfc_iocbq *cmdiocb;
915
916 cmdiocb = (struct lpfc_iocbq *) arg;
917
918 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
919 return (ndlp->nlp_state);
920}
921
922static uint32_t
923lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
924 struct lpfc_nodelist * ndlp, void *arg,
925 uint32_t evt)
926{
927 struct lpfc_iocbq *cmdiocb;
928
929 cmdiocb = (struct lpfc_iocbq *) arg;
930
931 /* Treat like rcv logo */
932 lpfc_rcv_logo(phba, ndlp, cmdiocb);
933 return (ndlp->nlp_state);
934}
935
936static uint32_t
937lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
938 struct lpfc_nodelist * ndlp, void *arg,
939 uint32_t evt)
940{
941 struct lpfc_iocbq *cmdiocb, *rspiocb;
942 IOCB_t *irsp;
943 ADISC *ap;
944
945 cmdiocb = (struct lpfc_iocbq *) arg;
946 rspiocb = cmdiocb->context_un.rsp_iocb;
947
948 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
949 irsp = &rspiocb->iocb;
950
951 if ((irsp->ulpStatus) ||
952 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
953 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
954 /* 1 sec timeout */
955 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
956 spin_lock_irq(phba->host->host_lock);
957 ndlp->nlp_flag |= NLP_DELAY_TMO;
958 spin_unlock_irq(phba->host->host_lock);
959
960 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
961 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
962
963 ndlp->nlp_state = NLP_STE_NPR_NODE;
964 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
965 lpfc_unreg_rpi(phba, ndlp);
966 return (ndlp->nlp_state);
967 }
2501322e
JSEC		 968 if (ndlp->nlp_type & NLP_FCP_TARGET) {
969 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
970 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
971 } else {
972 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
973 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
974 }
dea3101e 975 return (ndlp->nlp_state);
976}
977
978static uint32_t
979lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
980 struct lpfc_nodelist * ndlp, void *arg,
981 uint32_t evt)
982{
983 /* software abort outstanding ADISC */
984 lpfc_els_abort(phba, ndlp, 1);
985
986 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
987 return (NLP_STE_FREED_NODE);
988}
989
990static uint32_t
991lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
992 struct lpfc_nodelist * ndlp, void *arg,
993 uint32_t evt)
994{
995 /* software abort outstanding ADISC */
996 lpfc_els_abort(phba, ndlp, 1);
997
998 ndlp->nlp_state = NLP_STE_NPR_NODE;
999 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1000 spin_lock_irq(phba->host->host_lock);
1001 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1002 spin_unlock_irq(phba->host->host_lock);
1003
1004 lpfc_disc_set_adisc(phba, ndlp);
1005 return (ndlp->nlp_state);
1006}
1007
1008static uint32_t
1009lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
1010 struct lpfc_nodelist * ndlp, void *arg,
1011 uint32_t evt)
1012{
1013 struct lpfc_iocbq *cmdiocb;
1014
1015 cmdiocb = (struct lpfc_iocbq *) arg;
1016
1017 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1018 return (ndlp->nlp_state);
1019}
1020
1021static uint32_t
1022lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1023 struct lpfc_nodelist * ndlp, void *arg,
1024 uint32_t evt)
1025{
1026 struct lpfc_iocbq *cmdiocb;
1027
1028 cmdiocb = (struct lpfc_iocbq *) arg;
1029
1030 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1031 return (ndlp->nlp_state);
1032}
1033
1034static uint32_t
1035lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1036 struct lpfc_nodelist * ndlp, void *arg,
1037 uint32_t evt)
1038{
1039 struct lpfc_iocbq *cmdiocb;
1040
1041 cmdiocb = (struct lpfc_iocbq *) arg;
1042
1043 lpfc_rcv_logo(phba, ndlp, cmdiocb);
1044 return (ndlp->nlp_state);
1045}
1046
1047static uint32_t
1048lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1049 struct lpfc_nodelist * ndlp, void *arg,
1050 uint32_t evt)
1051{
1052 struct lpfc_iocbq *cmdiocb;
1053
1054 cmdiocb = (struct lpfc_iocbq *) arg;
1055
1056 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1057 return (ndlp->nlp_state);
1058}
1059
1060static uint32_t
1061lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1062 struct lpfc_nodelist * ndlp, void *arg,
1063 uint32_t evt)
1064{
1065 struct lpfc_iocbq *cmdiocb;
1066
1067 cmdiocb = (struct lpfc_iocbq *) arg;
1068 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1069 return (ndlp->nlp_state);
1070}
1071
1072static uint32_t
1073lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1074 struct lpfc_nodelist * ndlp,
1075 void *arg, uint32_t evt)
1076{
1077 LPFC_MBOXQ_t *pmb;
1078 MAILBOX_t *mb;
1079 uint32_t did;
1080
1081 pmb = (LPFC_MBOXQ_t *) arg;
1082 mb = &pmb->mb;
1083 did = mb->un.varWords[1];
1084 if (mb->mbxStatus) {
1085 /* RegLogin failed */
1086 lpfc_printf_log(phba,
1087 KERN_ERR,
1088 LOG_DISCOVERY,
1089 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1090 phba->brd_no,
1091 did, mb->mbxStatus, phba->hba_state);
1092
1093 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1094 spin_lock_irq(phba->host->host_lock);
1095 ndlp->nlp_flag |= NLP_DELAY_TMO;
1096 spin_unlock_irq(phba->host->host_lock);
1097
1098 lpfc_issue_els_logo(phba, ndlp, 0);
1099 /* Put ndlp in npr list set plogi timer for 1 sec */
1100 ndlp->nlp_last_elscmd = (unsigned long)ELS_CMD_PLOGI;
1101 ndlp->nlp_state = NLP_STE_NPR_NODE;
1102 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1103 return (ndlp->nlp_state);
1104 }
1105
dea3101e 1106 ndlp->nlp_rpi = mb->un.varWords[0];
dea3101e 1107
1108 /* Only if we are not a fabric nport do we issue PRLI */
1109 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1110 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1111 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1112 lpfc_issue_els_prli(phba, ndlp, 0);
1113 } else {
1114 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1115 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1116 }
1117 return (ndlp->nlp_state);
1118}
1119
1120static uint32_t
1121lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1122 struct lpfc_nodelist * ndlp, void *arg,
1123 uint32_t evt)
1124{
1125 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1126 return (NLP_STE_FREED_NODE);
1127}
1128
1129static uint32_t
1130lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1131 struct lpfc_nodelist * ndlp, void *arg,
1132 uint32_t evt)
1133{
1134 ndlp->nlp_state = NLP_STE_NPR_NODE;
1135 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1136 spin_lock_irq(phba->host->host_lock);
1137 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1138 spin_unlock_irq(phba->host->host_lock);
1139 return (ndlp->nlp_state);
1140}
1141
1142static uint32_t
1143lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1144 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1145{
1146 struct lpfc_iocbq *cmdiocb;
1147
1148 cmdiocb = (struct lpfc_iocbq *) arg;
1149
1150 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1151 return (ndlp->nlp_state);
1152}
1153
1154static uint32_t
1155lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1156 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1157{
1158 struct lpfc_iocbq *cmdiocb;
1159
1160 cmdiocb = (struct lpfc_iocbq *) arg;
1161
1162 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1163 return (ndlp->nlp_state);
1164}
1165
1166static uint32_t
1167lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1168 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1169{
1170 struct lpfc_iocbq *cmdiocb;
1171
1172 cmdiocb = (struct lpfc_iocbq *) arg;
1173
1174 /* Software abort outstanding PRLI before sending acc */
1175 lpfc_els_abort(phba, ndlp, 1);
1176
1177 lpfc_rcv_logo(phba, ndlp, cmdiocb);
1178 return (ndlp->nlp_state);
1179}
1180
1181static uint32_t
1182lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1183 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1184{
1185 struct lpfc_iocbq *cmdiocb;
1186
1187 cmdiocb = (struct lpfc_iocbq *) arg;
1188
1189 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1190 return (ndlp->nlp_state);
1191}
1192
1193/* This routine is envoked when we rcv a PRLO request from a nport
1194 * we are logged into. We should send back a PRLO rsp setting the
1195 * appropriate bits.
1196 * NEXT STATE = PRLI_ISSUE
1197 */
1198static uint32_t
1199lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1200 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1201{
1202 struct lpfc_iocbq *cmdiocb;
1203
1204 cmdiocb = (struct lpfc_iocbq *) arg;
1205 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1206 return (ndlp->nlp_state);
1207}
1208
1209static uint32_t
1210lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1211 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1212{
1213 struct lpfc_iocbq *cmdiocb, *rspiocb;
1214 IOCB_t *irsp;
1215 PRLI *npr;
1216
1217 cmdiocb = (struct lpfc_iocbq *) arg;
1218 rspiocb = cmdiocb->context_un.rsp_iocb;
1219 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1220
1221 irsp = &rspiocb->iocb;
1222 if (irsp->ulpStatus) {
1223 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1224 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1225 return (ndlp->nlp_state);
1226 }
1227
1228 /* Check out PRLI rsp */
1229 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1230 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1231 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1232 (npr->prliType == PRLI_FCP_TYPE)) {
1233 if (npr->initiatorFunc)
1234 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1235 if (npr->targetFunc)
1236 ndlp->nlp_type |= NLP_FCP_TARGET;
1237 if (npr->Retry)
1238 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1239 }
1240
1241 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1242 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1243 return (ndlp->nlp_state);
1244}
1245
1246/*! lpfc_device_rm_prli_issue
1247 *
1248 * \pre
1249 * \post
1250 * \param phba
1251 * \param ndlp
1252 * \param arg
1253 * \param evt
1254 * \return uint32_t
1255 *
1256 * \b Description:
1257 * This routine is envoked when we a request to remove a nport we are in the
1258 * process of PRLIing. We should software abort outstanding prli, unreg
1259 * login, send a logout. We will change node state to UNUSED_NODE, put it
1260 * on plogi list so it can be freed when LOGO completes.
1261 *
1262 */
1263static uint32_t
1264lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1265 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1266{
1267 /* software abort outstanding PRLI */
1268 lpfc_els_abort(phba, ndlp, 1);
1269
1270 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1271 return (NLP_STE_FREED_NODE);
1272}
1273
1274
1275/*! lpfc_device_recov_prli_issue
1276 *
1277 * \pre
1278 * \post
1279 * \param phba
1280 * \param ndlp
1281 * \param arg
1282 * \param evt
1283 * \return uint32_t
1284 *
1285 * \b Description:
1286 * The routine is envoked when the state of a device is unknown, like
1287 * during a link down. We should remove the nodelist entry from the
1288 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1289 * outstanding PRLI command, then free the node entry.
1290 */
1291static uint32_t
1292lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1293 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1294{
1295 /* software abort outstanding PRLI */
1296 lpfc_els_abort(phba, ndlp, 1);
1297
1298 ndlp->nlp_state = NLP_STE_NPR_NODE;
1299 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1300 spin_lock_irq(phba->host->host_lock);
1301 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1302 spin_unlock_irq(phba->host->host_lock);
1303 return (ndlp->nlp_state);
1304}
1305
1306static uint32_t
1307lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1308 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1309{
1310 struct lpfc_iocbq *cmdiocb;
1311
1312 cmdiocb = (struct lpfc_iocbq *) arg;
1313
1314 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1315 return (ndlp->nlp_state);
1316}
1317
1318static uint32_t
1319lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1320 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1321{
1322 struct lpfc_iocbq *cmdiocb;
1323
1324 cmdiocb = (struct lpfc_iocbq *) arg;
1325
1326 lpfc_rcv_prli(phba, ndlp, cmdiocb);
1327 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1328 return (ndlp->nlp_state);
1329}
1330
1331static uint32_t
1332lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1333 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1334{
1335 struct lpfc_iocbq *cmdiocb;
1336
1337 cmdiocb = (struct lpfc_iocbq *) arg;
1338
1339 lpfc_rcv_logo(phba, ndlp, cmdiocb);
1340 return (ndlp->nlp_state);
1341}
1342
1343static uint32_t
1344lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1345 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1346{
1347 struct lpfc_iocbq *cmdiocb;
1348
1349 cmdiocb = (struct lpfc_iocbq *) arg;
1350
1351 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1352 return (ndlp->nlp_state);
1353}
1354
1355static uint32_t
1356lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1357 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1358{
1359 struct lpfc_iocbq *cmdiocb;
1360
1361 cmdiocb = (struct lpfc_iocbq *) arg;
1362
1363 /* Treat like rcv logo */
1364 lpfc_rcv_logo(phba, ndlp, cmdiocb);
1365 return (ndlp->nlp_state);
1366}
1367
1368static uint32_t
1369lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1370 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1371{
1372 ndlp->nlp_state = NLP_STE_NPR_NODE;
1373 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1374 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1375 lpfc_disc_set_adisc(phba, ndlp);
1376
1377 return (ndlp->nlp_state);
1378}
1379
1380static uint32_t
1381lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1382 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1383{
1384 struct lpfc_iocbq *cmdiocb;
1385
1386 cmdiocb = (struct lpfc_iocbq *) arg;
1387
1388 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1389 return (ndlp->nlp_state);
1390}
1391
1392static uint32_t
1393lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1394 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1395{
1396 struct lpfc_iocbq *cmdiocb;
1397
1398 cmdiocb = (struct lpfc_iocbq *) arg;
1399
1400 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1401 return (ndlp->nlp_state);
1402}
1403
1404static uint32_t
1405lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1406 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1407{
1408 struct lpfc_iocbq *cmdiocb;
1409
1410 cmdiocb = (struct lpfc_iocbq *) arg;
1411
1412 lpfc_rcv_logo(phba, ndlp, cmdiocb);
1413 return (ndlp->nlp_state);
1414}
1415
1416static uint32_t
1417lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1418 struct lpfc_nodelist * ndlp, void *arg,
1419 uint32_t evt)
1420{
1421 struct lpfc_iocbq *cmdiocb;
1422
1423 cmdiocb = (struct lpfc_iocbq *) arg;
1424
1425 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1426 return (ndlp->nlp_state);
1427}
1428
1429static uint32_t
1430lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1431 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1432{
1433 struct lpfc_iocbq *cmdiocb;
1434
1435 cmdiocb = (struct lpfc_iocbq *) arg;
1436
1437 /* flush the target */
1438 spin_lock_irq(phba->host->host_lock);
1439 lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1440 ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1441 spin_unlock_irq(phba->host->host_lock);
1442
1443 /* Treat like rcv logo */
1444 lpfc_rcv_logo(phba, ndlp, cmdiocb);
1445 return (ndlp->nlp_state);
1446}
1447
1448static uint32_t
1449lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1450 struct lpfc_nodelist * ndlp, void *arg,
1451 uint32_t evt)
1452{
1453 ndlp->nlp_state = NLP_STE_NPR_NODE;
1454 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1455 spin_lock_irq(phba->host->host_lock);
1456 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1457 spin_unlock_irq(phba->host->host_lock);
1458 lpfc_disc_set_adisc(phba, ndlp);
1459 return (ndlp->nlp_state);
1460}
1461
1462static uint32_t
1463lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1464 struct lpfc_nodelist * ndlp, void *arg,
1465 uint32_t evt)
1466{
1467 struct lpfc_iocbq *cmdiocb;
1468
1469 cmdiocb = (struct lpfc_iocbq *) arg;
1470
1471 /* Ignore PLOGI if we have an outstanding LOGO */
1472 if (ndlp->nlp_flag & NLP_LOGO_SND) {
1473 return (ndlp->nlp_state);
1474 }
1475
1476 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1477 spin_lock_irq(phba->host->host_lock);
1478 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1479 spin_unlock_irq(phba->host->host_lock);
1480 return (ndlp->nlp_state);
1481 }
1482
1483 /* send PLOGI immediately, move to PLOGI issue state */
1484 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1485 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1486 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1487 lpfc_issue_els_plogi(phba, ndlp, 0);
1488 }
1489 return (ndlp->nlp_state);
1490}
1491
1492static uint32_t
1493lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1494 struct lpfc_nodelist * ndlp, void *arg,
1495 uint32_t evt)
1496{
1497 struct lpfc_iocbq *cmdiocb;
1498 struct ls_rjt stat;
1499
1500 cmdiocb = (struct lpfc_iocbq *) arg;
1501
1502 memset(&stat, 0, sizeof (struct ls_rjt));
1503 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1504 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1505 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1506
1507 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1508 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1509 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1510 lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1511 lpfc_issue_els_adisc(phba, ndlp, 0);
1512 } else {
1513 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1514 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1515 lpfc_issue_els_plogi(phba, ndlp, 0);
1516 }
1517 }
1518 return (ndlp->nlp_state);
1519}
1520
1521static uint32_t
1522lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1523 struct lpfc_nodelist * ndlp, void *arg,
1524 uint32_t evt)
1525{
1526 struct lpfc_iocbq *cmdiocb;
1527
1528 cmdiocb = (struct lpfc_iocbq *) arg;
1529
1530 lpfc_rcv_logo(phba, ndlp, cmdiocb);
1531 return (ndlp->nlp_state);
1532}
1533
1534static uint32_t
1535lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1536 struct lpfc_nodelist * ndlp, void *arg,
1537 uint32_t evt)
1538{
1539 struct lpfc_iocbq *cmdiocb;
1540
1541 cmdiocb = (struct lpfc_iocbq *) arg;
1542
1543 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1544
1545 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1546 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1547 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1548 lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1549 lpfc_issue_els_adisc(phba, ndlp, 0);
1550 } else {
1551 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1552 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1553 lpfc_issue_els_plogi(phba, ndlp, 0);
1554 }
1555 }
1556 return (ndlp->nlp_state);
1557}
1558
1559static uint32_t
1560lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1561 struct lpfc_nodelist * ndlp, void *arg,
1562 uint32_t evt)
1563{
1564 struct lpfc_iocbq *cmdiocb;
1565
1566 cmdiocb = (struct lpfc_iocbq *) arg;
1567
1568 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1569
1570 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1571 if (ndlp->nlp_last_elscmd == (unsigned long)ELS_CMD_PLOGI) {
1572 return (ndlp->nlp_state);
1573 } else {
1574 spin_lock_irq(phba->host->host_lock);
1575 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1576 spin_unlock_irq(phba->host->host_lock);
1577 del_timer_sync(&ndlp->nlp_delayfunc);
1578 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1579 list_del_init(&ndlp->els_retry_evt.evt_listp);
1580 }
1581 }
1582
1583 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1584 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1585 lpfc_issue_els_plogi(phba, ndlp, 0);
1586 return (ndlp->nlp_state);
1587}
1588
1589static uint32_t
1590lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1591 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1592{
1593 lpfc_unreg_rpi(phba, ndlp);
1594 /* This routine does nothing, just return the current state */
1595 return (ndlp->nlp_state);
1596}
1597
1598static uint32_t
1599lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1600 struct lpfc_nodelist * ndlp, void *arg,
1601 uint32_t evt)
1602{
1603 LPFC_MBOXQ_t *pmb;
1604 MAILBOX_t *mb;
1605
1606 pmb = (LPFC_MBOXQ_t *) arg;
1607 mb = &pmb->mb;
1608
dea3101e 1609 ndlp->nlp_rpi = mb->un.varWords[0];
dea3101e 1610
1611 return (ndlp->nlp_state);
1612}
1613
1614static uint32_t
1615lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1616 struct lpfc_nodelist * ndlp, void *arg,
1617 uint32_t evt)
1618{
1619 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1620 return (NLP_STE_FREED_NODE);
1621}
1622
1623static uint32_t
1624lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1625 struct lpfc_nodelist * ndlp, void *arg,
1626 uint32_t evt)
1627{
1628 spin_lock_irq(phba->host->host_lock);
1629 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
6ad42535
JW		 1630 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1631 ndlp->nlp_flag &= ~NLP_DELAY_TMO;
1632 if (!list_empty(&ndlp->els_retry_evt.evt_listp))
1633 list_del_init(&ndlp->els_retry_evt.evt_listp);
1634 spin_unlock_irq(phba->host->host_lock);
1635 del_timer_sync(&ndlp->nlp_delayfunc);
1636 return (ndlp->nlp_state);
1637 }
dea3101e 1638 spin_unlock_irq(phba->host->host_lock);
1639 return (ndlp->nlp_state);
1640}
1641
1642
1643/* This next section defines the NPort Discovery State Machine */
1644
1645/* There are 4 different double linked lists nodelist entries can reside on.
1646 * The plogi list and adisc list are used when Link Up discovery or RSCN
1647 * processing is needed. Each list holds the nodes that we will send PLOGI
1648 * or ADISC on. These lists will keep track of what nodes will be effected
1649 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1650 * The unmapped_list will contain all nodes that we have successfully logged
1651 * into at the Fibre Channel level. The mapped_list will contain all nodes
1652 * that are mapped FCP targets.
1653 */
1654/*
1655 * The bind list is a list of undiscovered (potentially non-existent) nodes
1656 * that we have saved binding information on. This information is used when
1657 * nodes transition from the unmapped to the mapped list.
1658 */
1659/* For UNUSED_NODE state, the node has just been allocated .
1660 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1661 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1662 * and put on the unmapped list. For ADISC processing, the node is taken off
1663 * the ADISC list and placed on either the mapped or unmapped list (depending
1664 * on its previous state). Once on the unmapped list, a PRLI is issued and the
1665 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1666 * changed to UNMAPPED_NODE. If the completion indicates a mapped
1667 * node, the node is taken off the unmapped list. The binding list is checked
1668 * for a valid binding, or a binding is automatically assigned. If binding
1669 * assignment is unsuccessful, the node is left on the unmapped list. If
1670 * binding assignment is successful, the associated binding list entry (if
1671 * any) is removed, and the node is placed on the mapped list.
1672 */
1673/*
1674 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1675 * lists will receive a DEVICE_RECOVERY event. If the linkdown or nodev timers
1676 * expire, all effected nodes will receive a DEVICE_RM event.
1677 */
1678/*
1679 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1680 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
1681 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1682 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1683 * we will first process the ADISC list. 32 entries are processed initially and
1684 * ADISC is initited for each one. Completions / Events for each node are
1685 * funnelled thru the state machine. As each node finishes ADISC processing, it
1686 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1687 * waiting, and the ADISC list count is identically 0, then we are done. For
1688 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1689 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1690 * list. 32 entries are processed initially and PLOGI is initited for each one.
1691 * Completions / Events for each node are funnelled thru the state machine. As
1692 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1693 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1694 * indentically 0, then we are done. We have now completed discovery / RSCN
1695 * handling. Upon completion, ALL nodes should be on either the mapped or
1696 * unmapped lists.
1697 */
1698
1699static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1700 (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1701 /* Action routine Event Current State */
1702 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
1703 lpfc_rcv_els_unused_node, /* RCV_PRLI */
1704 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
1705 lpfc_rcv_els_unused_node, /* RCV_ADISC */
1706 lpfc_rcv_els_unused_node, /* RCV_PDISC */
1707 lpfc_rcv_els_unused_node, /* RCV_PRLO */
1708 lpfc_disc_illegal, /* CMPL_PLOGI */
1709 lpfc_disc_illegal, /* CMPL_PRLI */
1710 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
1711 lpfc_disc_illegal, /* CMPL_ADISC */
1712 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1713 lpfc_device_rm_unused_node, /* DEVICE_RM */
1714 lpfc_disc_illegal, /* DEVICE_RECOVERY */
1715
1716 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
1717 lpfc_rcv_els_plogi_issue, /* RCV_PRLI */
1718 lpfc_rcv_els_plogi_issue, /* RCV_LOGO */
1719 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
1720 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
1721 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
1722 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
1723 lpfc_disc_illegal, /* CMPL_PRLI */
1724 lpfc_disc_illegal, /* CMPL_LOGO */
1725 lpfc_disc_illegal, /* CMPL_ADISC */
1726 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1727 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
1728 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
1729
1730 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
1731 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
1732 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
1733 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
1734 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
1735 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
1736 lpfc_disc_illegal, /* CMPL_PLOGI */
1737 lpfc_disc_illegal, /* CMPL_PRLI */
1738 lpfc_disc_illegal, /* CMPL_LOGO */
1739 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
1740 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1741 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
1742 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
1743
1744 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
1745 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
1746 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
1747 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
1748 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
1749 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
1750 lpfc_disc_illegal, /* CMPL_PLOGI */
1751 lpfc_disc_illegal, /* CMPL_PRLI */
1752 lpfc_disc_illegal, /* CMPL_LOGO */
1753 lpfc_disc_illegal, /* CMPL_ADISC */
1754 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
1755 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
1756 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1757
1758 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
1759 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
1760 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
1761 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
1762 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
1763 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
1764 lpfc_disc_illegal, /* CMPL_PLOGI */
1765 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
1766 lpfc_disc_illegal, /* CMPL_LOGO */
1767 lpfc_disc_illegal, /* CMPL_ADISC */
1768 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1769 lpfc_device_rm_prli_issue, /* DEVICE_RM */
1770 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
1771
1772 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
1773 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
1774 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
1775 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
1776 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
1777 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
1778 lpfc_disc_illegal, /* CMPL_PLOGI */
1779 lpfc_disc_illegal, /* CMPL_PRLI */
1780 lpfc_disc_illegal, /* CMPL_LOGO */
1781 lpfc_disc_illegal, /* CMPL_ADISC */
1782 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1783 lpfc_disc_illegal, /* DEVICE_RM */
1784 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
1785
1786 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
1787 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
1788 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
1789 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
1790 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
1791 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
1792 lpfc_disc_illegal, /* CMPL_PLOGI */
1793 lpfc_disc_illegal, /* CMPL_PRLI */
1794 lpfc_disc_illegal, /* CMPL_LOGO */
1795 lpfc_disc_illegal, /* CMPL_ADISC */
1796 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1797 lpfc_disc_illegal, /* DEVICE_RM */
1798 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
1799
1800 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
1801 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
1802 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
1803 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
1804 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
1805 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
1806 lpfc_disc_noop, /* CMPL_PLOGI */
1807 lpfc_disc_noop, /* CMPL_PRLI */
1808 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
1809 lpfc_disc_noop, /* CMPL_ADISC */
1810 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
1811 lpfc_device_rm_npr_node, /* DEVICE_RM */
1812 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
1813};
1814
1815int
1816lpfc_disc_state_machine(struct lpfc_hba * phba,
1817 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1818{
1819 uint32_t cur_state, rc;
1820 uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1821 uint32_t);
1822
1823 ndlp->nlp_disc_refcnt++;
1824 cur_state = ndlp->nlp_state;
1825
1826 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1827 lpfc_printf_log(phba,
1828 KERN_INFO,
1829 LOG_DISCOVERY,
1830 "%d:0211 DSM in event x%x on NPort x%x in state %d "
1831 "Data: x%x\n",
1832 phba->brd_no,
1833 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1834
1835 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1836 rc = (func) (phba, ndlp, arg, evt);
1837
1838 /* DSM out state <rc> on NPort <nlp_DID> */
1839 lpfc_printf_log(phba,
1840 KERN_INFO,
1841 LOG_DISCOVERY,
1842 "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1843 phba->brd_no,
1844 rc, ndlp->nlp_DID, ndlp->nlp_flag);
1845
1846 ndlp->nlp_disc_refcnt--;
1847
1848 /* Check to see if ndlp removal is deferred */
1849 if ((ndlp->nlp_disc_refcnt == 0)
1850 && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1851 spin_lock_irq(phba->host->host_lock);
1852 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1853 spin_unlock_irq(phba->host->host_lock);
1854 lpfc_nlp_remove(phba, ndlp);
1855 return (NLP_STE_FREED_NODE);
1856 }
1857 if (rc == NLP_STE_FREED_NODE)
1858 return (NLP_STE_FREED_NODE);
1859 ndlp->nlp_state = rc;
1860 return (rc);
1861}
Linux kernel - Deliverables
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