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tifm: layout fixes, small changes to comments and printfs
[linux-2.6/verdex.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blob0c7e731dc45a6cdba715693d4c72ae0526920a7b
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, *mp;
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 mp = (struct lpfc_dmabuf *)mbox->context1;
833 lpfc_mbuf_free(phba, mp->virt, mp->phys);
834 kfree(mp);
835 mempool_free(mbox, phba->mbox_mem_pool);
836 } else {
837 mempool_free(mbox, phba->mbox_mem_pool);
838 }
839
840
841 out:
842 /* Free this node since the driver cannot login or has the wrong
843 sparm */
844 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
845 return NLP_STE_FREED_NODE;
846 }
847
848 static uint32_t
849 lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
850 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
851 {
852 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
853 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
854 return ndlp->nlp_state;
855 }
856 else {
857 /* software abort outstanding PLOGI */
858 lpfc_els_abort(phba, ndlp, 1);
859
860 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
861 return NLP_STE_FREED_NODE;
862 }
863 }
864
865 static uint32_t
866 lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
867 struct lpfc_nodelist * ndlp, void *arg,
868 uint32_t evt)
869 {
870 /* software abort outstanding PLOGI */
871 lpfc_els_abort(phba, ndlp, 1);
872
873 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
874 ndlp->nlp_state = NLP_STE_NPR_NODE;
875 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
876 spin_lock_irq(phba->host->host_lock);
877 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
878 spin_unlock_irq(phba->host->host_lock);
879
880 return ndlp->nlp_state;
881 }
882
883 static uint32_t
884 lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
885 struct lpfc_nodelist * ndlp, void *arg,
886 uint32_t evt)
887 {
888 struct lpfc_iocbq *cmdiocb;
889
890 /* software abort outstanding ADISC */
891 lpfc_els_abort(phba, ndlp, 1);
892
893 cmdiocb = (struct lpfc_iocbq *) arg;
894
895 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
896 return ndlp->nlp_state;
897 }
898 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
899 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
900 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
901 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
902
903 return ndlp->nlp_state;
904 }
905
906 static uint32_t
907 lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
908 struct lpfc_nodelist * ndlp, void *arg,
909 uint32_t evt)
910 {
911 struct lpfc_iocbq *cmdiocb;
912
913 cmdiocb = (struct lpfc_iocbq *) arg;
914
915 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
916 return ndlp->nlp_state;
917 }
918
919 static uint32_t
920 lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
921 struct lpfc_nodelist * ndlp, void *arg,
922 uint32_t evt)
923 {
924 struct lpfc_iocbq *cmdiocb;
925
926 cmdiocb = (struct lpfc_iocbq *) arg;
927
928 /* software abort outstanding ADISC */
929 lpfc_els_abort(phba, ndlp, 0);
930
931 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
932 return ndlp->nlp_state;
933 }
934
935 static uint32_t
936 lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
937 struct lpfc_nodelist * ndlp, void *arg,
938 uint32_t evt)
939 {
940 struct lpfc_iocbq *cmdiocb;
941
942 cmdiocb = (struct lpfc_iocbq *) arg;
943
944 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
945 return ndlp->nlp_state;
946 }
947
948 static uint32_t
949 lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
950 struct lpfc_nodelist * ndlp, void *arg,
951 uint32_t evt)
952 {
953 struct lpfc_iocbq *cmdiocb;
954
955 cmdiocb = (struct lpfc_iocbq *) arg;
956
957 /* Treat like rcv logo */
958 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
959 return ndlp->nlp_state;
960 }
961
962 static uint32_t
963 lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
964 struct lpfc_nodelist * ndlp, void *arg,
965 uint32_t evt)
966 {
967 struct lpfc_iocbq *cmdiocb, *rspiocb;
968 IOCB_t *irsp;
969 ADISC *ap;
970
971 cmdiocb = (struct lpfc_iocbq *) arg;
972 rspiocb = cmdiocb->context_un.rsp_iocb;
973
974 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
975 irsp = &rspiocb->iocb;
976
977 if ((irsp->ulpStatus) ||
978 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
979 /* 1 sec timeout */
980 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
981 spin_lock_irq(phba->host->host_lock);
982 ndlp->nlp_flag |= NLP_DELAY_TMO;
983 spin_unlock_irq(phba->host->host_lock);
984 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
985
986 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
987 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
988
989 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
990 ndlp->nlp_state = NLP_STE_NPR_NODE;
991 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
992 lpfc_unreg_rpi(phba, ndlp);
993 return ndlp->nlp_state;
994 }
995
996 if (ndlp->nlp_type & NLP_FCP_TARGET) {
997 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
998 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
999 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1000 } else {
1001 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1002 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1003 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1004 }
1005 return ndlp->nlp_state;
1006 }
1007
1008 static uint32_t
1009 lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
1010 struct lpfc_nodelist * ndlp, void *arg,
1011 uint32_t evt)
1012 {
1013 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1014 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1015 return ndlp->nlp_state;
1016 }
1017 else {
1018 /* software abort outstanding ADISC */
1019 lpfc_els_abort(phba, ndlp, 1);
1020
1021 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1022 return NLP_STE_FREED_NODE;
1023 }
1024 }
1025
1026 static uint32_t
1027 lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
1028 struct lpfc_nodelist * ndlp, void *arg,
1029 uint32_t evt)
1030 {
1031 /* software abort outstanding ADISC */
1032 lpfc_els_abort(phba, ndlp, 1);
1033
1034 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1035 ndlp->nlp_state = NLP_STE_NPR_NODE;
1036 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1037 spin_lock_irq(phba->host->host_lock);
1038 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1039 ndlp->nlp_flag |= NLP_NPR_ADISC;
1040 spin_unlock_irq(phba->host->host_lock);
1041
1042 return ndlp->nlp_state;
1043 }
1044
1045 static uint32_t
1046 lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
1047 struct lpfc_nodelist * ndlp, void *arg,
1048 uint32_t evt)
1049 {
1050 struct lpfc_iocbq *cmdiocb;
1051
1052 cmdiocb = (struct lpfc_iocbq *) arg;
1053
1054 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1055 return ndlp->nlp_state;
1056 }
1057
1058 static uint32_t
1059 lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1060 struct lpfc_nodelist * ndlp, void *arg,
1061 uint32_t evt)
1062 {
1063 struct lpfc_iocbq *cmdiocb;
1064
1065 cmdiocb = (struct lpfc_iocbq *) arg;
1066
1067 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1068 return ndlp->nlp_state;
1069 }
1070
1071 static uint32_t
1072 lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1073 struct lpfc_nodelist * ndlp, void *arg,
1074 uint32_t evt)
1075 {
1076 struct lpfc_iocbq *cmdiocb;
1077
1078 cmdiocb = (struct lpfc_iocbq *) arg;
1079
1080 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1081 return ndlp->nlp_state;
1082 }
1083
1084 static uint32_t
1085 lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1086 struct lpfc_nodelist * ndlp, void *arg,
1087 uint32_t evt)
1088 {
1089 struct lpfc_iocbq *cmdiocb;
1090
1091 cmdiocb = (struct lpfc_iocbq *) arg;
1092
1093 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1094 return ndlp->nlp_state;
1095 }
1096
1097 static uint32_t
1098 lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1099 struct lpfc_nodelist * ndlp, void *arg,
1100 uint32_t evt)
1101 {
1102 struct lpfc_iocbq *cmdiocb;
1103
1104 cmdiocb = (struct lpfc_iocbq *) arg;
1105 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1106 return ndlp->nlp_state;
1107 }
1108
1109 static uint32_t
1110 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1111 struct lpfc_nodelist * ndlp,
1112 void *arg, uint32_t evt)
1113 {
1114 LPFC_MBOXQ_t *pmb;
1115 MAILBOX_t *mb;
1116 uint32_t did;
1117
1118 pmb = (LPFC_MBOXQ_t *) arg;
1119 mb = &pmb->mb;
1120 did = mb->un.varWords[1];
1121 if (mb->mbxStatus) {
1122 /* RegLogin failed */
1123 lpfc_printf_log(phba,
1124 KERN_ERR,
1125 LOG_DISCOVERY,
1126 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1127 phba->brd_no,
1128 did, mb->mbxStatus, phba->hba_state);
1129
1130 /*
1131 * If RegLogin failed due to lack of HBA resources do not
1132 * retry discovery.
1133 */
1134 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1135 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
1136 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
1137 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
1138 return ndlp->nlp_state;
1139 }
1140
1141 /* Put ndlp in npr list set plogi timer for 1 sec */
1142 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1143 spin_lock_irq(phba->host->host_lock);
1144 ndlp->nlp_flag |= NLP_DELAY_TMO;
1145 spin_unlock_irq(phba->host->host_lock);
1146 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1147
1148 lpfc_issue_els_logo(phba, ndlp, 0);
1149 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1150 ndlp->nlp_state = NLP_STE_NPR_NODE;
1151 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1152 return ndlp->nlp_state;
1153 }
1154
1155 ndlp->nlp_rpi = mb->un.varWords[0];
1156
1157 /* Only if we are not a fabric nport do we issue PRLI */
1158 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1159 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1160 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1161 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1162 lpfc_issue_els_prli(phba, ndlp, 0);
1163 } else {
1164 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1165 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1166 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1167 }
1168 return ndlp->nlp_state;
1169 }
1170
1171 static uint32_t
1172 lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1173 struct lpfc_nodelist * ndlp, void *arg,
1174 uint32_t evt)
1175 {
1176 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1177 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1178 return ndlp->nlp_state;
1179 }
1180 else {
1181 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1182 return NLP_STE_FREED_NODE;
1183 }
1184 }
1185
1186 static uint32_t
1187 lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1188 struct lpfc_nodelist * ndlp, void *arg,
1189 uint32_t evt)
1190 {
1191 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1192 ndlp->nlp_state = NLP_STE_NPR_NODE;
1193 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1194 spin_lock_irq(phba->host->host_lock);
1195 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1196 spin_unlock_irq(phba->host->host_lock);
1197 return ndlp->nlp_state;
1198 }
1199
1200 static uint32_t
1201 lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1202 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1203 {
1204 struct lpfc_iocbq *cmdiocb;
1205
1206 cmdiocb = (struct lpfc_iocbq *) arg;
1207
1208 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1209 return ndlp->nlp_state;
1210 }
1211
1212 static uint32_t
1213 lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1214 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1215 {
1216 struct lpfc_iocbq *cmdiocb;
1217
1218 cmdiocb = (struct lpfc_iocbq *) arg;
1219
1220 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1221 return ndlp->nlp_state;
1222 }
1223
1224 static uint32_t
1225 lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1226 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1227 {
1228 struct lpfc_iocbq *cmdiocb;
1229
1230 cmdiocb = (struct lpfc_iocbq *) arg;
1231
1232 /* Software abort outstanding PRLI before sending acc */
1233 lpfc_els_abort(phba, ndlp, 1);
1234
1235 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1236 return ndlp->nlp_state;
1237 }
1238
1239 static uint32_t
1240 lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1241 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1242 {
1243 struct lpfc_iocbq *cmdiocb;
1244
1245 cmdiocb = (struct lpfc_iocbq *) arg;
1246
1247 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1248 return ndlp->nlp_state;
1249 }
1250
1251 /* This routine is envoked when we rcv a PRLO request from a nport
1252 * we are logged into. We should send back a PRLO rsp setting the
1253 * appropriate bits.
1254 * NEXT STATE = PRLI_ISSUE
1255 */
1256 static uint32_t
1257 lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1258 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1259 {
1260 struct lpfc_iocbq *cmdiocb;
1261
1262 cmdiocb = (struct lpfc_iocbq *) arg;
1263 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1264 return ndlp->nlp_state;
1265 }
1266
1267 static uint32_t
1268 lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1269 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1270 {
1271 struct lpfc_iocbq *cmdiocb, *rspiocb;
1272 IOCB_t *irsp;
1273 PRLI *npr;
1274
1275 cmdiocb = (struct lpfc_iocbq *) arg;
1276 rspiocb = cmdiocb->context_un.rsp_iocb;
1277 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1278
1279 irsp = &rspiocb->iocb;
1280 if (irsp->ulpStatus) {
1281 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1282 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1283 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1284 return ndlp->nlp_state;
1285 }
1286
1287 /* Check out PRLI rsp */
1288 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1289 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1290 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1291 (npr->prliType == PRLI_FCP_TYPE)) {
1292 if (npr->initiatorFunc)
1293 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1294 if (npr->targetFunc)
1295 ndlp->nlp_type |= NLP_FCP_TARGET;
1296 if (npr->Retry)
1297 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1298 }
1299
1300 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1301 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1302 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
1303 return ndlp->nlp_state;
1304 }
1305
1306 /*! lpfc_device_rm_prli_issue
1307 *
1308 * \pre
1309 * \post
1310 * \param phba
1311 * \param ndlp
1312 * \param arg
1313 * \param evt
1314 * \return uint32_t
1315 *
1316 * \b Description:
1317 * This routine is envoked when we a request to remove a nport we are in the
1318 * process of PRLIing. We should software abort outstanding prli, unreg
1319 * login, send a logout. We will change node state to UNUSED_NODE, put it
1320 * on plogi list so it can be freed when LOGO completes.
1321 *
1322 */
1323 static uint32_t
1324 lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1325 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1326 {
1327 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1328 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1329 return ndlp->nlp_state;
1330 }
1331 else {
1332 /* software abort outstanding PLOGI */
1333 lpfc_els_abort(phba, ndlp, 1);
1334
1335 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1336 return NLP_STE_FREED_NODE;
1337 }
1338 }
1339
1340
1341 /*! lpfc_device_recov_prli_issue
1342 *
1343 * \pre
1344 * \post
1345 * \param phba
1346 * \param ndlp
1347 * \param arg
1348 * \param evt
1349 * \return uint32_t
1350 *
1351 * \b Description:
1352 * The routine is envoked when the state of a device is unknown, like
1353 * during a link down. We should remove the nodelist entry from the
1354 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1355 * outstanding PRLI command, then free the node entry.
1356 */
1357 static uint32_t
1358 lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1359 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1360 {
1361 /* software abort outstanding PRLI */
1362 lpfc_els_abort(phba, ndlp, 1);
1363
1364 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1365 ndlp->nlp_state = NLP_STE_NPR_NODE;
1366 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1367 spin_lock_irq(phba->host->host_lock);
1368 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1369 spin_unlock_irq(phba->host->host_lock);
1370 return ndlp->nlp_state;
1371 }
1372
1373 static uint32_t
1374 lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1375 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1376 {
1377 struct lpfc_iocbq *cmdiocb;
1378
1379 cmdiocb = (struct lpfc_iocbq *) arg;
1380
1381 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1382 return ndlp->nlp_state;
1383 }
1384
1385 static uint32_t
1386 lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1387 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1388 {
1389 struct lpfc_iocbq *cmdiocb;
1390
1391 cmdiocb = (struct lpfc_iocbq *) arg;
1392
1393 lpfc_rcv_prli(phba, ndlp, cmdiocb);
1394 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1395 return ndlp->nlp_state;
1396 }
1397
1398 static uint32_t
1399 lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1400 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1401 {
1402 struct lpfc_iocbq *cmdiocb;
1403
1404 cmdiocb = (struct lpfc_iocbq *) arg;
1405
1406 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1407 return ndlp->nlp_state;
1408 }
1409
1410 static uint32_t
1411 lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1412 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1413 {
1414 struct lpfc_iocbq *cmdiocb;
1415
1416 cmdiocb = (struct lpfc_iocbq *) arg;
1417
1418 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1419 return ndlp->nlp_state;
1420 }
1421
1422 static uint32_t
1423 lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1424 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1425 {
1426 struct lpfc_iocbq *cmdiocb;
1427
1428 cmdiocb = (struct lpfc_iocbq *) arg;
1429
1430 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
1431 return ndlp->nlp_state;
1432 }
1433
1434 static uint32_t
1435 lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1436 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1437 {
1438 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1439 ndlp->nlp_state = NLP_STE_NPR_NODE;
1440 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1441 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1442 lpfc_disc_set_adisc(phba, ndlp);
1443
1444 return ndlp->nlp_state;
1445 }
1446
1447 static uint32_t
1448 lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1449 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1450 {
1451 struct lpfc_iocbq *cmdiocb;
1452
1453 cmdiocb = (struct lpfc_iocbq *) arg;
1454
1455 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
1456 return ndlp->nlp_state;
1457 }
1458
1459 static uint32_t
1460 lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1461 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1462 {
1463 struct lpfc_iocbq *cmdiocb;
1464
1465 cmdiocb = (struct lpfc_iocbq *) arg;
1466
1467 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
1468 return ndlp->nlp_state;
1469 }
1470
1471 static uint32_t
1472 lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1473 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1474 {
1475 struct lpfc_iocbq *cmdiocb;
1476
1477 cmdiocb = (struct lpfc_iocbq *) arg;
1478
1479 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1480 return ndlp->nlp_state;
1481 }
1482
1483 static uint32_t
1484 lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1485 struct lpfc_nodelist * ndlp, void *arg,
1486 uint32_t evt)
1487 {
1488 struct lpfc_iocbq *cmdiocb;
1489
1490 cmdiocb = (struct lpfc_iocbq *) arg;
1491
1492 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1493 return ndlp->nlp_state;
1494 }
1495
1496 static uint32_t
1497 lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1498 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1499 {
1500 struct lpfc_iocbq *cmdiocb;
1501
1502 cmdiocb = (struct lpfc_iocbq *) arg;
1503
1504 /* flush the target */
1505 spin_lock_irq(phba->host->host_lock);
1506 lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1507 ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1508 spin_unlock_irq(phba->host->host_lock);
1509
1510 /* Treat like rcv logo */
1511 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
1512 return ndlp->nlp_state;
1513 }
1514
1515 static uint32_t
1516 lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1517 struct lpfc_nodelist * ndlp, void *arg,
1518 uint32_t evt)
1519 {
1520 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1521 ndlp->nlp_state = NLP_STE_NPR_NODE;
1522 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1523 spin_lock_irq(phba->host->host_lock);
1524 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1525 spin_unlock_irq(phba->host->host_lock);
1526 lpfc_disc_set_adisc(phba, ndlp);
1527 return ndlp->nlp_state;
1528 }
1529
1530 static uint32_t
1531 lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1532 struct lpfc_nodelist * ndlp, void *arg,
1533 uint32_t evt)
1534 {
1535 struct lpfc_iocbq *cmdiocb;
1536
1537 cmdiocb = (struct lpfc_iocbq *) arg;
1538
1539 /* Ignore PLOGI if we have an outstanding LOGO */
1540 if (ndlp->nlp_flag & NLP_LOGO_SND) {
1541 return ndlp->nlp_state;
1542 }
1543
1544 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1545 spin_lock_irq(phba->host->host_lock);
1546 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1547 spin_unlock_irq(phba->host->host_lock);
1548 return ndlp->nlp_state;
1549 }
1550
1551 /* send PLOGI immediately, move to PLOGI issue state */
1552 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1553 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1554 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1555 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1556 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1557 }
1558
1559 return ndlp->nlp_state;
1560 }
1561
1562 static uint32_t
1563 lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1564 struct lpfc_nodelist * ndlp, void *arg,
1565 uint32_t evt)
1566 {
1567 struct lpfc_iocbq *cmdiocb;
1568 struct ls_rjt stat;
1569
1570 cmdiocb = (struct lpfc_iocbq *) arg;
1571
1572 memset(&stat, 0, sizeof (struct ls_rjt));
1573 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1574 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1575 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1576
1577 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1578 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1579 spin_lock_irq(phba->host->host_lock);
1580 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1581 spin_unlock_irq(phba->host->host_lock);
1582 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1583 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1584 lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1585 lpfc_issue_els_adisc(phba, ndlp, 0);
1586 } else {
1587 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1588 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1589 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1590 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1591 }
1592
1593 }
1594 return ndlp->nlp_state;
1595 }
1596
1597 static uint32_t
1598 lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1599 struct lpfc_nodelist * ndlp, void *arg,
1600 uint32_t evt)
1601 {
1602 struct lpfc_iocbq *cmdiocb;
1603
1604 cmdiocb = (struct lpfc_iocbq *) arg;
1605
1606 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
1607 return ndlp->nlp_state;
1608 }
1609
1610 static uint32_t
1611 lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1612 struct lpfc_nodelist * ndlp, void *arg,
1613 uint32_t evt)
1614 {
1615 struct lpfc_iocbq *cmdiocb;
1616
1617 cmdiocb = (struct lpfc_iocbq *) arg;
1618
1619 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1620
1621 /*
1622 * Do not start discovery if discovery is about to start
1623 * or discovery in progress for this node. Starting discovery
1624 * here will affect the counting of discovery threads.
1625 */
1626 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1627 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)){
1628 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1629 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1630 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1631 lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1632 lpfc_issue_els_adisc(phba, ndlp, 0);
1633 } else {
1634 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1635 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1636 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1637 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
1638 }
1639 }
1640 return ndlp->nlp_state;
1641 }
1642
1643 static uint32_t
1644 lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1645 struct lpfc_nodelist * ndlp, void *arg,
1646 uint32_t evt)
1647 {
1648 struct lpfc_iocbq *cmdiocb;
1649
1650 cmdiocb = (struct lpfc_iocbq *) arg;
1651
1652 spin_lock_irq(phba->host->host_lock);
1653 ndlp->nlp_flag |= NLP_LOGO_ACC;
1654 spin_unlock_irq(phba->host->host_lock);
1655
1656 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1657
1658 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1659 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1660 spin_lock_irq(phba->host->host_lock);
1661 ndlp->nlp_flag |= NLP_DELAY_TMO;
1662 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1663 spin_unlock_irq(phba->host->host_lock);
1664 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1665 } else {
1666 spin_lock_irq(phba->host->host_lock);
1667 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1668 spin_unlock_irq(phba->host->host_lock);
1669 }
1670 return ndlp->nlp_state;
1671 }
1672
1673 static uint32_t
1674 lpfc_cmpl_plogi_npr_node(struct lpfc_hba * phba,
1675 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1676 {
1677 struct lpfc_iocbq *cmdiocb, *rspiocb;
1678 IOCB_t *irsp;
1679
1680 cmdiocb = (struct lpfc_iocbq *) arg;
1681 rspiocb = cmdiocb->context_un.rsp_iocb;
1682
1683 irsp = &rspiocb->iocb;
1684 if (irsp->ulpStatus) {
1685 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1686 return NLP_STE_FREED_NODE;
1687 }
1688 return ndlp->nlp_state;
1689 }
1690
1691 static uint32_t
1692 lpfc_cmpl_prli_npr_node(struct lpfc_hba * phba,
1693 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1694 {
1695 struct lpfc_iocbq *cmdiocb, *rspiocb;
1696 IOCB_t *irsp;
1697
1698 cmdiocb = (struct lpfc_iocbq *) arg;
1699 rspiocb = cmdiocb->context_un.rsp_iocb;
1700
1701 irsp = &rspiocb->iocb;
1702 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1703 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1704 return NLP_STE_FREED_NODE;
1705 }
1706 return ndlp->nlp_state;
1707 }
1708
1709 static uint32_t
1710 lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1711 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1712 {
1713 lpfc_unreg_rpi(phba, ndlp);
1714 /* This routine does nothing, just return the current state */
1715 return ndlp->nlp_state;
1716 }
1717
1718 static uint32_t
1719 lpfc_cmpl_adisc_npr_node(struct lpfc_hba * phba,
1720 struct lpfc_nodelist * ndlp, void *arg,
1721 uint32_t evt)
1722 {
1723 struct lpfc_iocbq *cmdiocb, *rspiocb;
1724 IOCB_t *irsp;
1725
1726 cmdiocb = (struct lpfc_iocbq *) arg;
1727 rspiocb = cmdiocb->context_un.rsp_iocb;
1728
1729 irsp = &rspiocb->iocb;
1730 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1731 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1732 return NLP_STE_FREED_NODE;
1733 }
1734 return ndlp->nlp_state;
1735 }
1736
1737 static uint32_t
1738 lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1739 struct lpfc_nodelist * ndlp, void *arg,
1740 uint32_t evt)
1741 {
1742 LPFC_MBOXQ_t *pmb;
1743 MAILBOX_t *mb;
1744
1745 pmb = (LPFC_MBOXQ_t *) arg;
1746 mb = &pmb->mb;
1747
1748 if (!mb->mbxStatus)
1749 ndlp->nlp_rpi = mb->un.varWords[0];
1750 else {
1751 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1752 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1753 return NLP_STE_FREED_NODE;
1754 }
1755 }
1756 return ndlp->nlp_state;
1757 }
1758
1759 static uint32_t
1760 lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1761 struct lpfc_nodelist * ndlp, void *arg,
1762 uint32_t evt)
1763 {
1764 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1765 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1766 return ndlp->nlp_state;
1767 }
1768 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1769 return NLP_STE_FREED_NODE;
1770 }
1771
1772 static uint32_t
1773 lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1774 struct lpfc_nodelist * ndlp, void *arg,
1775 uint32_t evt)
1776 {
1777 spin_lock_irq(phba->host->host_lock);
1778 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1779 spin_unlock_irq(phba->host->host_lock);
1780 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
1781 lpfc_cancel_retry_delay_tmo(phba, ndlp);
1782 }
1783 return ndlp->nlp_state;
1784 }
1785
1786
1787 /* This next section defines the NPort Discovery State Machine */
1788
1789 /* There are 4 different double linked lists nodelist entries can reside on.
1790 * The plogi list and adisc list are used when Link Up discovery or RSCN
1791 * processing is needed. Each list holds the nodes that we will send PLOGI
1792 * or ADISC on. These lists will keep track of what nodes will be effected
1793 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1794 * The unmapped_list will contain all nodes that we have successfully logged
1795 * into at the Fibre Channel level. The mapped_list will contain all nodes
1796 * that are mapped FCP targets.
1797 */
1798 /*
1799 * The bind list is a list of undiscovered (potentially non-existent) nodes
1800 * that we have saved binding information on. This information is used when
1801 * nodes transition from the unmapped to the mapped list.
1802 */
1803 /* For UNUSED_NODE state, the node has just been allocated .
1804 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1805 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1806 * and put on the unmapped list. For ADISC processing, the node is taken off
1807 * the ADISC list and placed on either the mapped or unmapped list (depending
1808 * on its previous state). Once on the unmapped list, a PRLI is issued and the
1809 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1810 * changed to UNMAPPED_NODE. If the completion indicates a mapped
1811 * node, the node is taken off the unmapped list. The binding list is checked
1812 * for a valid binding, or a binding is automatically assigned. If binding
1813 * assignment is unsuccessful, the node is left on the unmapped list. If
1814 * binding assignment is successful, the associated binding list entry (if
1815 * any) is removed, and the node is placed on the mapped list.
1816 */
1817 /*
1818 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1819 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1820 * expire, all effected nodes will receive a DEVICE_RM event.
1821 */
1822 /*
1823 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1824 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
1825 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1826 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1827 * we will first process the ADISC list. 32 entries are processed initially and
1828 * ADISC is initited for each one. Completions / Events for each node are
1829 * funnelled thru the state machine. As each node finishes ADISC processing, it
1830 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1831 * waiting, and the ADISC list count is identically 0, then we are done. For
1832 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1833 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1834 * list. 32 entries are processed initially and PLOGI is initited for each one.
1835 * Completions / Events for each node are funnelled thru the state machine. As
1836 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1837 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1838 * indentically 0, then we are done. We have now completed discovery / RSCN
1839 * handling. Upon completion, ALL nodes should be on either the mapped or
1840 * unmapped lists.
1841 */
1842
1843 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1844 (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1845 /* Action routine Event Current State */
1846 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
1847 lpfc_rcv_els_unused_node, /* RCV_PRLI */
1848 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
1849 lpfc_rcv_els_unused_node, /* RCV_ADISC */
1850 lpfc_rcv_els_unused_node, /* RCV_PDISC */
1851 lpfc_rcv_els_unused_node, /* RCV_PRLO */
1852 lpfc_disc_illegal, /* CMPL_PLOGI */
1853 lpfc_disc_illegal, /* CMPL_PRLI */
1854 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
1855 lpfc_disc_illegal, /* CMPL_ADISC */
1856 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1857 lpfc_device_rm_unused_node, /* DEVICE_RM */
1858 lpfc_disc_illegal, /* DEVICE_RECOVERY */
1859
1860 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
1861 lpfc_rcv_els_plogi_issue, /* RCV_PRLI */
1862 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
1863 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
1864 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
1865 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
1866 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
1867 lpfc_disc_illegal, /* CMPL_PRLI */
1868 lpfc_disc_illegal, /* CMPL_LOGO */
1869 lpfc_disc_illegal, /* CMPL_ADISC */
1870 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1871 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
1872 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
1873
1874 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
1875 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
1876 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
1877 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
1878 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
1879 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
1880 lpfc_disc_illegal, /* CMPL_PLOGI */
1881 lpfc_disc_illegal, /* CMPL_PRLI */
1882 lpfc_disc_illegal, /* CMPL_LOGO */
1883 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
1884 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1885 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
1886 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
1887
1888 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
1889 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
1890 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
1891 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
1892 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
1893 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
1894 lpfc_disc_illegal, /* CMPL_PLOGI */
1895 lpfc_disc_illegal, /* CMPL_PRLI */
1896 lpfc_disc_illegal, /* CMPL_LOGO */
1897 lpfc_disc_illegal, /* CMPL_ADISC */
1898 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
1899 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
1900 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1901
1902 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
1903 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
1904 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
1905 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
1906 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
1907 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
1908 lpfc_disc_illegal, /* CMPL_PLOGI */
1909 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
1910 lpfc_disc_illegal, /* CMPL_LOGO */
1911 lpfc_disc_illegal, /* CMPL_ADISC */
1912 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1913 lpfc_device_rm_prli_issue, /* DEVICE_RM */
1914 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
1915
1916 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
1917 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
1918 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
1919 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
1920 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
1921 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
1922 lpfc_disc_illegal, /* CMPL_PLOGI */
1923 lpfc_disc_illegal, /* CMPL_PRLI */
1924 lpfc_disc_illegal, /* CMPL_LOGO */
1925 lpfc_disc_illegal, /* CMPL_ADISC */
1926 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1927 lpfc_disc_illegal, /* DEVICE_RM */
1928 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
1929
1930 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
1931 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
1932 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
1933 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
1934 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
1935 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
1936 lpfc_disc_illegal, /* CMPL_PLOGI */
1937 lpfc_disc_illegal, /* CMPL_PRLI */
1938 lpfc_disc_illegal, /* CMPL_LOGO */
1939 lpfc_disc_illegal, /* CMPL_ADISC */
1940 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1941 lpfc_disc_illegal, /* DEVICE_RM */
1942 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
1943
1944 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
1945 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
1946 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
1947 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
1948 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
1949 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
1950 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
1951 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
1952 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
1953 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
1954 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
1955 lpfc_device_rm_npr_node, /* DEVICE_RM */
1956 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
1957 };
1958
1959 int
1960 lpfc_disc_state_machine(struct lpfc_hba * phba,
1961 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1962 {
1963 uint32_t cur_state, rc;
1964 uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1965 uint32_t);
1966
1967 ndlp->nlp_disc_refcnt++;
1968 cur_state = ndlp->nlp_state;
1969
1970 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1971 lpfc_printf_log(phba,
1972 KERN_INFO,
1973 LOG_DISCOVERY,
1974 "%d:0211 DSM in event x%x on NPort x%x in state %d "
1975 "Data: x%x\n",
1976 phba->brd_no,
1977 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1978
1979 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1980 rc = (func) (phba, ndlp, arg, evt);
1981
1982 /* DSM out state <rc> on NPort <nlp_DID> */
1983 lpfc_printf_log(phba,
1984 KERN_INFO,
1985 LOG_DISCOVERY,
1986 "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1987 phba->brd_no,
1988 rc, ndlp->nlp_DID, ndlp->nlp_flag);
1989
1990 ndlp->nlp_disc_refcnt--;
1991
1992 /* Check to see if ndlp removal is deferred */
1993 if ((ndlp->nlp_disc_refcnt == 0)
1994 && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1995 spin_lock_irq(phba->host->host_lock);
1996 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1997 spin_unlock_irq(phba->host->host_lock);
1998 lpfc_nlp_remove(phba, ndlp);
1999 return NLP_STE_FREED_NODE;
2000 }
2001 if (rc == NLP_STE_FREED_NODE)
2002 return NLP_STE_FREED_NODE;
2003 return rc;
2004 }
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