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Merge branch 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/interrupt.h>
25
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_device.h>
28 #include <scsi/scsi_host.h>
29 #include <scsi/scsi_transport_fc.h>
30
31 #include "lpfc_hw.h"
32 #include "lpfc_sli.h"
33 #include "lpfc_nl.h"
34 #include "lpfc_disc.h"
35 #include "lpfc_scsi.h"
36 #include "lpfc.h"
37 #include "lpfc_logmsg.h"
38 #include "lpfc_crtn.h"
39 #include "lpfc_vport.h"
40 #include "lpfc_debugfs.h"
41
42
43 /* Called to verify a rcv'ed ADISC was intended for us. */
44 static int
45 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
46 struct lpfc_name *nn, struct lpfc_name *pn)
47 {
48 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
49 * table entry for that node.
50 */
51 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
52 return 0;
53
54 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
55 return 0;
56
57 /* we match, return success */
58 return 1;
59 }
60
61 int
62 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
63 struct serv_parm * sp, uint32_t class)
64 {
65 volatile struct serv_parm *hsp = &vport->fc_sparam;
66 uint16_t hsp_value, ssp_value = 0;
67
68 /*
69 * The receive data field size and buffer-to-buffer receive data field
70 * size entries are 16 bits but are represented as two 8-bit fields in
71 * the driver data structure to account for rsvd bits and other control
72 * bits. Reconstruct and compare the fields as a 16-bit values before
73 * correcting the byte values.
74 */
75 if (sp->cls1.classValid) {
76 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
77 hsp->cls1.rcvDataSizeLsb;
78 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
79 sp->cls1.rcvDataSizeLsb;
80 if (!ssp_value)
81 goto bad_service_param;
82 if (ssp_value > hsp_value) {
83 sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
84 sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
85 }
86 } else if (class == CLASS1) {
87 goto bad_service_param;
88 }
89
90 if (sp->cls2.classValid) {
91 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
92 hsp->cls2.rcvDataSizeLsb;
93 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
94 sp->cls2.rcvDataSizeLsb;
95 if (!ssp_value)
96 goto bad_service_param;
97 if (ssp_value > hsp_value) {
98 sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
99 sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
100 }
101 } else if (class == CLASS2) {
102 goto bad_service_param;
103 }
104
105 if (sp->cls3.classValid) {
106 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
107 hsp->cls3.rcvDataSizeLsb;
108 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
109 sp->cls3.rcvDataSizeLsb;
110 if (!ssp_value)
111 goto bad_service_param;
112 if (ssp_value > hsp_value) {
113 sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
114 sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
115 }
116 } else if (class == CLASS3) {
117 goto bad_service_param;
118 }
119
120 /*
121 * Preserve the upper four bits of the MSB from the PLOGI response.
122 * These bits contain the Buffer-to-Buffer State Change Number
123 * from the target and need to be passed to the FW.
124 */
125 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
126 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
127 if (ssp_value > hsp_value) {
128 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
129 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
130 (hsp->cmn.bbRcvSizeMsb & 0x0F);
131 }
132
133 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
134 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
135 return 1;
136 bad_service_param:
137 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
138 "0207 Device %x "
139 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
140 "invalid service parameters. Ignoring device.\n",
141 ndlp->nlp_DID,
142 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
143 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
144 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
145 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
146 return 0;
147 }
148
149 static void *
150 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
151 struct lpfc_iocbq *rspiocb)
152 {
153 struct lpfc_dmabuf *pcmd, *prsp;
154 uint32_t *lp;
155 void *ptr = NULL;
156 IOCB_t *irsp;
157
158 irsp = &rspiocb->iocb;
159 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
160
161 /* For lpfc_els_abort, context2 could be zero'ed to delay
162 * freeing associated memory till after ABTS completes.
163 */
164 if (pcmd) {
165 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
166 list);
167 if (prsp) {
168 lp = (uint32_t *) prsp->virt;
169 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
170 }
171 } else {
172 /* Force ulpStatus error since we are returning NULL ptr */
173 if (!(irsp->ulpStatus)) {
174 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
175 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
176 }
177 ptr = NULL;
178 }
179 return ptr;
180 }
181
182
183 /*
184 * Free resources / clean up outstanding I/Os
185 * associated with a LPFC_NODELIST entry. This
186 * routine effectively results in a "software abort".
187 */
188 int
189 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
190 {
191 LIST_HEAD(completions);
192 struct lpfc_sli *psli = &phba->sli;
193 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
194 struct lpfc_iocbq *iocb, *next_iocb;
195
196 /* Abort outstanding I/O on NPort <nlp_DID> */
197 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
198 "0205 Abort outstanding I/O on NPort x%x "
199 "Data: x%x x%x x%x\n",
200 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
201 ndlp->nlp_rpi);
202
203 lpfc_fabric_abort_nport(ndlp);
204
205 /* First check the txq */
206 spin_lock_irq(&phba->hbalock);
207 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
208 /* Check to see if iocb matches the nport we are looking for */
209 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
210 /* It matches, so deque and call compl with anp error */
211 list_move_tail(&iocb->list, &completions);
212 pring->txq_cnt--;
213 }
214 }
215
216 /* Next check the txcmplq */
217 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
218 /* Check to see if iocb matches the nport we are looking for */
219 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
220 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
221 }
222 }
223 spin_unlock_irq(&phba->hbalock);
224
225 /* Cancel all the IOCBs from the completions list */
226 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
227 IOERR_SLI_ABORTED);
228
229 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
230 return 0;
231 }
232
233 static int
234 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
235 struct lpfc_iocbq *cmdiocb)
236 {
237 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
238 struct lpfc_hba *phba = vport->phba;
239 struct lpfc_dmabuf *pcmd;
240 uint32_t *lp;
241 IOCB_t *icmd;
242 struct serv_parm *sp;
243 LPFC_MBOXQ_t *mbox;
244 struct ls_rjt stat;
245 int rc;
246
247 memset(&stat, 0, sizeof (struct ls_rjt));
248 if (vport->port_state <= LPFC_FLOGI) {
249 /* Before responding to PLOGI, check for pt2pt mode.
250 * If we are pt2pt, with an outstanding FLOGI, abort
251 * the FLOGI and resend it first.
252 */
253 if (vport->fc_flag & FC_PT2PT) {
254 lpfc_els_abort_flogi(phba);
255 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
256 /* If the other side is supposed to initiate
257 * the PLOGI anyway, just ACC it now and
258 * move on with discovery.
259 */
260 phba->fc_edtov = FF_DEF_EDTOV;
261 phba->fc_ratov = FF_DEF_RATOV;
262 /* Start discovery - this should just do
263 CLEAR_LA */
264 lpfc_disc_start(vport);
265 } else
266 lpfc_initial_flogi(vport);
267 } else {
268 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
269 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
270 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
271 ndlp, NULL);
272 return 0;
273 }
274 }
275 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
276 lp = (uint32_t *) pcmd->virt;
277 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
278 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
279 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
280 "0140 PLOGI Reject: invalid nname\n");
281 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
282 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
283 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
284 NULL);
285 return 0;
286 }
287 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
288 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
289 "0141 PLOGI Reject: invalid pname\n");
290 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
291 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
292 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
293 NULL);
294 return 0;
295 }
296 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
297 /* Reject this request because invalid parameters */
298 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
299 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
300 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
301 NULL);
302 return 0;
303 }
304 icmd = &cmdiocb->iocb;
305
306 /* PLOGI chkparm OK */
307 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
308 "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
309 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
310 ndlp->nlp_rpi);
311
312 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
313 ndlp->nlp_fcp_info |= CLASS2;
314 else
315 ndlp->nlp_fcp_info |= CLASS3;
316
317 ndlp->nlp_class_sup = 0;
318 if (sp->cls1.classValid)
319 ndlp->nlp_class_sup |= FC_COS_CLASS1;
320 if (sp->cls2.classValid)
321 ndlp->nlp_class_sup |= FC_COS_CLASS2;
322 if (sp->cls3.classValid)
323 ndlp->nlp_class_sup |= FC_COS_CLASS3;
324 if (sp->cls4.classValid)
325 ndlp->nlp_class_sup |= FC_COS_CLASS4;
326 ndlp->nlp_maxframe =
327 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
328
329 /* no need to reg_login if we are already in one of these states */
330 switch (ndlp->nlp_state) {
331 case NLP_STE_NPR_NODE:
332 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
333 break;
334 case NLP_STE_REG_LOGIN_ISSUE:
335 case NLP_STE_PRLI_ISSUE:
336 case NLP_STE_UNMAPPED_NODE:
337 case NLP_STE_MAPPED_NODE:
338 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
339 return 1;
340 }
341
342 if ((vport->fc_flag & FC_PT2PT) &&
343 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
344 /* rcv'ed PLOGI decides what our NPortId will be */
345 vport->fc_myDID = icmd->un.rcvels.parmRo;
346 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
347 if (mbox == NULL)
348 goto out;
349 lpfc_config_link(phba, mbox);
350 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
351 mbox->vport = vport;
352 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
353 if (rc == MBX_NOT_FINISHED) {
354 mempool_free(mbox, phba->mbox_mem_pool);
355 goto out;
356 }
357
358 lpfc_can_disctmo(vport);
359 }
360 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
361 if (!mbox)
362 goto out;
363
364 rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
365 (uint8_t *) sp, mbox, 0);
366 if (rc) {
367 mempool_free(mbox, phba->mbox_mem_pool);
368 goto out;
369 }
370
371 /* ACC PLOGI rsp command needs to execute first,
372 * queue this mbox command to be processed later.
373 */
374 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
375 /*
376 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
377 * command issued in lpfc_cmpl_els_acc().
378 */
379 mbox->vport = vport;
380 spin_lock_irq(shost->host_lock);
381 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
382 spin_unlock_irq(shost->host_lock);
383
384 /*
385 * If there is an outstanding PLOGI issued, abort it before
386 * sending ACC rsp for received PLOGI. If pending plogi
387 * is not canceled here, the plogi will be rejected by
388 * remote port and will be retried. On a configuration with
389 * single discovery thread, this will cause a huge delay in
390 * discovery. Also this will cause multiple state machines
391 * running in parallel for this node.
392 */
393 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
394 /* software abort outstanding PLOGI */
395 lpfc_els_abort(phba, ndlp);
396 }
397
398 if ((vport->port_type == LPFC_NPIV_PORT &&
399 vport->cfg_restrict_login)) {
400
401 /* In order to preserve RPIs, we want to cleanup
402 * the default RPI the firmware created to rcv
403 * this ELS request. The only way to do this is
404 * to register, then unregister the RPI.
405 */
406 spin_lock_irq(shost->host_lock);
407 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
408 spin_unlock_irq(shost->host_lock);
409 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
410 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
411 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
412 ndlp, mbox);
413 return 1;
414 }
415 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
416 return 1;
417 out:
418 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
419 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
420 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
421 return 0;
422 }
423
424 static int
425 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
426 struct lpfc_iocbq *cmdiocb)
427 {
428 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
429 struct lpfc_dmabuf *pcmd;
430 struct serv_parm *sp;
431 struct lpfc_name *pnn, *ppn;
432 struct ls_rjt stat;
433 ADISC *ap;
434 IOCB_t *icmd;
435 uint32_t *lp;
436 uint32_t cmd;
437
438 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
439 lp = (uint32_t *) pcmd->virt;
440
441 cmd = *lp++;
442 if (cmd == ELS_CMD_ADISC) {
443 ap = (ADISC *) lp;
444 pnn = (struct lpfc_name *) & ap->nodeName;
445 ppn = (struct lpfc_name *) & ap->portName;
446 } else {
447 sp = (struct serv_parm *) lp;
448 pnn = (struct lpfc_name *) & sp->nodeName;
449 ppn = (struct lpfc_name *) & sp->portName;
450 }
451
452 icmd = &cmdiocb->iocb;
453 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
454 if (cmd == ELS_CMD_ADISC) {
455 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
456 } else {
457 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
458 NULL);
459 }
460 return 1;
461 }
462 /* Reject this request because invalid parameters */
463 stat.un.b.lsRjtRsvd0 = 0;
464 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
465 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
466 stat.un.b.vendorUnique = 0;
467 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
468
469 /* 1 sec timeout */
470 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
471
472 spin_lock_irq(shost->host_lock);
473 ndlp->nlp_flag |= NLP_DELAY_TMO;
474 spin_unlock_irq(shost->host_lock);
475 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
476 ndlp->nlp_prev_state = ndlp->nlp_state;
477 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
478 return 0;
479 }
480
481 static int
482 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
483 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
484 {
485 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
486
487 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
488 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
489 * PLOGIs during LOGO storms from a device.
490 */
491 spin_lock_irq(shost->host_lock);
492 ndlp->nlp_flag |= NLP_LOGO_ACC;
493 spin_unlock_irq(shost->host_lock);
494 if (els_cmd == ELS_CMD_PRLO)
495 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
496 else
497 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
498
499 if ((!(ndlp->nlp_type & NLP_FABRIC) &&
500 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
501 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
502 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
503 /* Only try to re-login if this is NOT a Fabric Node */
504 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
505 spin_lock_irq(shost->host_lock);
506 ndlp->nlp_flag |= NLP_DELAY_TMO;
507 spin_unlock_irq(shost->host_lock);
508
509 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
510 }
511 ndlp->nlp_prev_state = ndlp->nlp_state;
512 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
513
514 spin_lock_irq(shost->host_lock);
515 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
516 spin_unlock_irq(shost->host_lock);
517 /* The driver has to wait until the ACC completes before it continues
518 * processing the LOGO. The action will resume in
519 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
520 * unreg_login, the driver waits so the ACC does not get aborted.
521 */
522 return 0;
523 }
524
525 static void
526 lpfc_rcv_prli(struct lpfc_vport *vport, 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->prliType == PRLI_FCP_TYPE) {
542 if (npr->initiatorFunc)
543 ndlp->nlp_type |= NLP_FCP_INITIATOR;
544 if (npr->targetFunc)
545 ndlp->nlp_type |= NLP_FCP_TARGET;
546 if (npr->Retry)
547 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
548 }
549 if (rport) {
550 /* We need to update the rport role values */
551 roles = FC_RPORT_ROLE_UNKNOWN;
552 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
553 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
554 if (ndlp->nlp_type & NLP_FCP_TARGET)
555 roles |= FC_RPORT_ROLE_FCP_TARGET;
556
557 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
558 "rport rolechg: role:x%x did:x%x flg:x%x",
559 roles, ndlp->nlp_DID, ndlp->nlp_flag);
560
561 fc_remote_port_rolechg(rport, roles);
562 }
563 }
564
565 static uint32_t
566 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
567 {
568 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
569
570 if (!ndlp->nlp_rpi) {
571 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
572 return 0;
573 }
574
575 if (!(vport->fc_flag & FC_PT2PT)) {
576 /* Check config parameter use-adisc or FCP-2 */
577 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
578 ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
579 spin_lock_irq(shost->host_lock);
580 ndlp->nlp_flag |= NLP_NPR_ADISC;
581 spin_unlock_irq(shost->host_lock);
582 return 1;
583 }
584 }
585 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
586 lpfc_unreg_rpi(vport, ndlp);
587 return 0;
588 }
589
590 static uint32_t
591 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
592 void *arg, uint32_t evt)
593 {
594 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
595 "0271 Illegal State Transition: node x%x "
596 "event x%x, state x%x Data: x%x x%x\n",
597 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
598 ndlp->nlp_flag);
599 return ndlp->nlp_state;
600 }
601
602 static uint32_t
603 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
604 void *arg, uint32_t evt)
605 {
606 /* This transition is only legal if we previously
607 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
608 * working on the same NPortID, do nothing for this thread
609 * to stop it.
610 */
611 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
612 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
613 "0272 Illegal State Transition: node x%x "
614 "event x%x, state x%x Data: x%x x%x\n",
615 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
616 ndlp->nlp_flag);
617 }
618 return ndlp->nlp_state;
619 }
620
621 /* Start of Discovery State Machine routines */
622
623 static uint32_t
624 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
625 void *arg, uint32_t evt)
626 {
627 struct lpfc_iocbq *cmdiocb;
628
629 cmdiocb = (struct lpfc_iocbq *) arg;
630
631 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
632 return ndlp->nlp_state;
633 }
634 return NLP_STE_FREED_NODE;
635 }
636
637 static uint32_t
638 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
639 void *arg, uint32_t evt)
640 {
641 lpfc_issue_els_logo(vport, ndlp, 0);
642 return ndlp->nlp_state;
643 }
644
645 static uint32_t
646 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
647 void *arg, uint32_t evt)
648 {
649 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
650 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
651
652 spin_lock_irq(shost->host_lock);
653 ndlp->nlp_flag |= NLP_LOGO_ACC;
654 spin_unlock_irq(shost->host_lock);
655 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
656
657 return ndlp->nlp_state;
658 }
659
660 static uint32_t
661 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
662 void *arg, uint32_t evt)
663 {
664 return NLP_STE_FREED_NODE;
665 }
666
667 static uint32_t
668 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
669 void *arg, uint32_t evt)
670 {
671 return NLP_STE_FREED_NODE;
672 }
673
674 static uint32_t
675 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
676 void *arg, uint32_t evt)
677 {
678 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
679 struct lpfc_hba *phba = vport->phba;
680 struct lpfc_iocbq *cmdiocb = arg;
681 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
682 uint32_t *lp = (uint32_t *) pcmd->virt;
683 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
684 struct ls_rjt stat;
685 int port_cmp;
686
687 memset(&stat, 0, sizeof (struct ls_rjt));
688
689 /* For a PLOGI, we only accept if our portname is less
690 * than the remote portname.
691 */
692 phba->fc_stat.elsLogiCol++;
693 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
694 sizeof(struct lpfc_name));
695
696 if (port_cmp >= 0) {
697 /* Reject this request because the remote node will accept
698 ours */
699 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
700 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
701 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
702 NULL);
703 } else {
704 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
705 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
706 (vport->num_disc_nodes)) {
707 spin_lock_irq(shost->host_lock);
708 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
709 spin_unlock_irq(shost->host_lock);
710 /* Check if there are more PLOGIs to be sent */
711 lpfc_more_plogi(vport);
712 if (vport->num_disc_nodes == 0) {
713 spin_lock_irq(shost->host_lock);
714 vport->fc_flag &= ~FC_NDISC_ACTIVE;
715 spin_unlock_irq(shost->host_lock);
716 lpfc_can_disctmo(vport);
717 lpfc_end_rscn(vport);
718 }
719 }
720 } /* If our portname was less */
721
722 return ndlp->nlp_state;
723 }
724
725 static uint32_t
726 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
727 void *arg, uint32_t evt)
728 {
729 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
730 struct ls_rjt stat;
731
732 memset(&stat, 0, sizeof (struct ls_rjt));
733 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
734 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
735 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
736 return ndlp->nlp_state;
737 }
738
739 static uint32_t
740 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
741 void *arg, uint32_t evt)
742 {
743 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
744
745 /* software abort outstanding PLOGI */
746 lpfc_els_abort(vport->phba, ndlp);
747
748 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
749 return ndlp->nlp_state;
750 }
751
752 static uint32_t
753 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
754 void *arg, uint32_t evt)
755 {
756 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
757 struct lpfc_hba *phba = vport->phba;
758 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
759
760 /* software abort outstanding PLOGI */
761 lpfc_els_abort(phba, ndlp);
762
763 if (evt == NLP_EVT_RCV_LOGO) {
764 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
765 } else {
766 lpfc_issue_els_logo(vport, ndlp, 0);
767 }
768
769 /* Put ndlp in npr state set plogi timer for 1 sec */
770 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
771 spin_lock_irq(shost->host_lock);
772 ndlp->nlp_flag |= NLP_DELAY_TMO;
773 spin_unlock_irq(shost->host_lock);
774 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
775 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
776 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
777
778 return ndlp->nlp_state;
779 }
780
781 static uint32_t
782 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
783 struct lpfc_nodelist *ndlp,
784 void *arg,
785 uint32_t evt)
786 {
787 struct lpfc_hba *phba = vport->phba;
788 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
789 struct lpfc_iocbq *cmdiocb, *rspiocb;
790 struct lpfc_dmabuf *pcmd, *prsp, *mp;
791 uint32_t *lp;
792 IOCB_t *irsp;
793 struct serv_parm *sp;
794 LPFC_MBOXQ_t *mbox;
795
796 cmdiocb = (struct lpfc_iocbq *) arg;
797 rspiocb = cmdiocb->context_un.rsp_iocb;
798
799 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
800 /* Recovery from PLOGI collision logic */
801 return ndlp->nlp_state;
802 }
803
804 irsp = &rspiocb->iocb;
805
806 if (irsp->ulpStatus)
807 goto out;
808
809 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
810
811 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
812
813 lp = (uint32_t *) prsp->virt;
814 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
815
816 /* Some switches have FDMI servers returning 0 for WWN */
817 if ((ndlp->nlp_DID != FDMI_DID) &&
818 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
819 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
820 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
821 "0142 PLOGI RSP: Invalid WWN.\n");
822 goto out;
823 }
824 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
825 goto out;
826 /* PLOGI chkparm OK */
827 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
828 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
829 ndlp->nlp_DID, ndlp->nlp_state,
830 ndlp->nlp_flag, ndlp->nlp_rpi);
831 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
832 ndlp->nlp_fcp_info |= CLASS2;
833 else
834 ndlp->nlp_fcp_info |= CLASS3;
835
836 ndlp->nlp_class_sup = 0;
837 if (sp->cls1.classValid)
838 ndlp->nlp_class_sup |= FC_COS_CLASS1;
839 if (sp->cls2.classValid)
840 ndlp->nlp_class_sup |= FC_COS_CLASS2;
841 if (sp->cls3.classValid)
842 ndlp->nlp_class_sup |= FC_COS_CLASS3;
843 if (sp->cls4.classValid)
844 ndlp->nlp_class_sup |= FC_COS_CLASS4;
845 ndlp->nlp_maxframe =
846 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
847
848 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
849 if (!mbox) {
850 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
851 "0133 PLOGI: no memory for reg_login "
852 "Data: x%x x%x x%x x%x\n",
853 ndlp->nlp_DID, ndlp->nlp_state,
854 ndlp->nlp_flag, ndlp->nlp_rpi);
855 goto out;
856 }
857
858 lpfc_unreg_rpi(vport, ndlp);
859
860 if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
861 (uint8_t *) sp, mbox, 0) == 0) {
862 switch (ndlp->nlp_DID) {
863 case NameServer_DID:
864 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
865 break;
866 case FDMI_DID:
867 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
868 break;
869 default:
870 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
871 }
872 mbox->context2 = lpfc_nlp_get(ndlp);
873 mbox->vport = vport;
874 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
875 != MBX_NOT_FINISHED) {
876 lpfc_nlp_set_state(vport, ndlp,
877 NLP_STE_REG_LOGIN_ISSUE);
878 return ndlp->nlp_state;
879 }
880 /* decrement node reference count to the failed mbox
881 * command
882 */
883 lpfc_nlp_put(ndlp);
884 mp = (struct lpfc_dmabuf *) mbox->context1;
885 lpfc_mbuf_free(phba, mp->virt, mp->phys);
886 kfree(mp);
887 mempool_free(mbox, phba->mbox_mem_pool);
888
889 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
890 "0134 PLOGI: cannot issue reg_login "
891 "Data: x%x x%x x%x x%x\n",
892 ndlp->nlp_DID, ndlp->nlp_state,
893 ndlp->nlp_flag, ndlp->nlp_rpi);
894 } else {
895 mempool_free(mbox, phba->mbox_mem_pool);
896
897 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
898 "0135 PLOGI: cannot format reg_login "
899 "Data: x%x x%x x%x x%x\n",
900 ndlp->nlp_DID, ndlp->nlp_state,
901 ndlp->nlp_flag, ndlp->nlp_rpi);
902 }
903
904
905 out:
906 if (ndlp->nlp_DID == NameServer_DID) {
907 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
908 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
909 "0261 Cannot Register NameServer login\n");
910 }
911
912 spin_lock_irq(shost->host_lock);
913 ndlp->nlp_flag |= NLP_DEFER_RM;
914 spin_unlock_irq(shost->host_lock);
915 return NLP_STE_FREED_NODE;
916 }
917
918 static uint32_t
919 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
920 void *arg, uint32_t evt)
921 {
922 return ndlp->nlp_state;
923 }
924
925 static uint32_t
926 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
927 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
928 {
929 return ndlp->nlp_state;
930 }
931
932 static uint32_t
933 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
934 void *arg, uint32_t evt)
935 {
936 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
937
938 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
939 spin_lock_irq(shost->host_lock);
940 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
941 spin_unlock_irq(shost->host_lock);
942 return ndlp->nlp_state;
943 } else {
944 /* software abort outstanding PLOGI */
945 lpfc_els_abort(vport->phba, ndlp);
946
947 lpfc_drop_node(vport, ndlp);
948 return NLP_STE_FREED_NODE;
949 }
950 }
951
952 static uint32_t
953 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
954 struct lpfc_nodelist *ndlp,
955 void *arg,
956 uint32_t evt)
957 {
958 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
959 struct lpfc_hba *phba = vport->phba;
960
961 /* Don't do anything that will mess up processing of the
962 * previous RSCN.
963 */
964 if (vport->fc_flag & FC_RSCN_DEFERRED)
965 return ndlp->nlp_state;
966
967 /* software abort outstanding PLOGI */
968 lpfc_els_abort(phba, ndlp);
969
970 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
971 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
972 spin_lock_irq(shost->host_lock);
973 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
974 spin_unlock_irq(shost->host_lock);
975
976 return ndlp->nlp_state;
977 }
978
979 static uint32_t
980 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
981 void *arg, uint32_t evt)
982 {
983 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
984 struct lpfc_hba *phba = vport->phba;
985 struct lpfc_iocbq *cmdiocb;
986
987 /* software abort outstanding ADISC */
988 lpfc_els_abort(phba, ndlp);
989
990 cmdiocb = (struct lpfc_iocbq *) arg;
991
992 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
993 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
994 spin_lock_irq(shost->host_lock);
995 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
996 spin_unlock_irq(shost->host_lock);
997 if (vport->num_disc_nodes)
998 lpfc_more_adisc(vport);
999 }
1000 return ndlp->nlp_state;
1001 }
1002 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1003 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1004 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1005
1006 return ndlp->nlp_state;
1007 }
1008
1009 static uint32_t
1010 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1011 void *arg, uint32_t evt)
1012 {
1013 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1014
1015 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1016 return ndlp->nlp_state;
1017 }
1018
1019 static uint32_t
1020 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1021 void *arg, uint32_t evt)
1022 {
1023 struct lpfc_hba *phba = vport->phba;
1024 struct lpfc_iocbq *cmdiocb;
1025
1026 cmdiocb = (struct lpfc_iocbq *) arg;
1027
1028 /* software abort outstanding ADISC */
1029 lpfc_els_abort(phba, ndlp);
1030
1031 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1032 return ndlp->nlp_state;
1033 }
1034
1035 static uint32_t
1036 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1037 struct lpfc_nodelist *ndlp,
1038 void *arg, uint32_t evt)
1039 {
1040 struct lpfc_iocbq *cmdiocb;
1041
1042 cmdiocb = (struct lpfc_iocbq *) arg;
1043
1044 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1045 return ndlp->nlp_state;
1046 }
1047
1048 static uint32_t
1049 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1050 void *arg, uint32_t evt)
1051 {
1052 struct lpfc_iocbq *cmdiocb;
1053
1054 cmdiocb = (struct lpfc_iocbq *) arg;
1055
1056 /* Treat like rcv logo */
1057 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1058 return ndlp->nlp_state;
1059 }
1060
1061 static uint32_t
1062 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1063 struct lpfc_nodelist *ndlp,
1064 void *arg, uint32_t evt)
1065 {
1066 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1067 struct lpfc_hba *phba = vport->phba;
1068 struct lpfc_iocbq *cmdiocb, *rspiocb;
1069 IOCB_t *irsp;
1070 ADISC *ap;
1071
1072 cmdiocb = (struct lpfc_iocbq *) arg;
1073 rspiocb = cmdiocb->context_un.rsp_iocb;
1074
1075 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1076 irsp = &rspiocb->iocb;
1077
1078 if ((irsp->ulpStatus) ||
1079 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1080 /* 1 sec timeout */
1081 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1082 spin_lock_irq(shost->host_lock);
1083 ndlp->nlp_flag |= NLP_DELAY_TMO;
1084 spin_unlock_irq(shost->host_lock);
1085 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1086
1087 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1088 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1089
1090 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1091 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1092 lpfc_unreg_rpi(vport, ndlp);
1093 return ndlp->nlp_state;
1094 }
1095
1096 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1097 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1098 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1099 } else {
1100 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1101 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1102 }
1103 return ndlp->nlp_state;
1104 }
1105
1106 static uint32_t
1107 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1108 void *arg, uint32_t evt)
1109 {
1110 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1111
1112 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1113 spin_lock_irq(shost->host_lock);
1114 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1115 spin_unlock_irq(shost->host_lock);
1116 return ndlp->nlp_state;
1117 } else {
1118 /* software abort outstanding ADISC */
1119 lpfc_els_abort(vport->phba, ndlp);
1120
1121 lpfc_drop_node(vport, ndlp);
1122 return NLP_STE_FREED_NODE;
1123 }
1124 }
1125
1126 static uint32_t
1127 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1128 struct lpfc_nodelist *ndlp,
1129 void *arg,
1130 uint32_t evt)
1131 {
1132 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1133 struct lpfc_hba *phba = vport->phba;
1134
1135 /* Don't do anything that will mess up processing of the
1136 * previous RSCN.
1137 */
1138 if (vport->fc_flag & FC_RSCN_DEFERRED)
1139 return ndlp->nlp_state;
1140
1141 /* software abort outstanding ADISC */
1142 lpfc_els_abort(phba, ndlp);
1143
1144 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1145 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1146 spin_lock_irq(shost->host_lock);
1147 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1148 spin_unlock_irq(shost->host_lock);
1149 lpfc_disc_set_adisc(vport, ndlp);
1150 return ndlp->nlp_state;
1151 }
1152
1153 static uint32_t
1154 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1155 struct lpfc_nodelist *ndlp,
1156 void *arg,
1157 uint32_t evt)
1158 {
1159 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1160
1161 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1162 return ndlp->nlp_state;
1163 }
1164
1165 static uint32_t
1166 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1167 struct lpfc_nodelist *ndlp,
1168 void *arg,
1169 uint32_t evt)
1170 {
1171 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1172
1173 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1174 return ndlp->nlp_state;
1175 }
1176
1177 static uint32_t
1178 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1179 struct lpfc_nodelist *ndlp,
1180 void *arg,
1181 uint32_t evt)
1182 {
1183 struct lpfc_hba *phba = vport->phba;
1184 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1185 LPFC_MBOXQ_t *mb;
1186 LPFC_MBOXQ_t *nextmb;
1187 struct lpfc_dmabuf *mp;
1188
1189 cmdiocb = (struct lpfc_iocbq *) arg;
1190
1191 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1192 if ((mb = phba->sli.mbox_active)) {
1193 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1194 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1195 lpfc_nlp_put(ndlp);
1196 mb->context2 = NULL;
1197 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1198 }
1199 }
1200
1201 spin_lock_irq(&phba->hbalock);
1202 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1203 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1204 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1205 mp = (struct lpfc_dmabuf *) (mb->context1);
1206 if (mp) {
1207 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1208 kfree(mp);
1209 }
1210 lpfc_nlp_put(ndlp);
1211 list_del(&mb->list);
1212 mempool_free(mb, phba->mbox_mem_pool);
1213 }
1214 }
1215 spin_unlock_irq(&phba->hbalock);
1216
1217 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1218 return ndlp->nlp_state;
1219 }
1220
1221 static uint32_t
1222 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1223 struct lpfc_nodelist *ndlp,
1224 void *arg,
1225 uint32_t evt)
1226 {
1227 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1228
1229 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1230 return ndlp->nlp_state;
1231 }
1232
1233 static uint32_t
1234 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1235 struct lpfc_nodelist *ndlp,
1236 void *arg,
1237 uint32_t evt)
1238 {
1239 struct lpfc_iocbq *cmdiocb;
1240
1241 cmdiocb = (struct lpfc_iocbq *) arg;
1242 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1243 return ndlp->nlp_state;
1244 }
1245
1246 static uint32_t
1247 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1248 struct lpfc_nodelist *ndlp,
1249 void *arg,
1250 uint32_t evt)
1251 {
1252 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1253 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1254 MAILBOX_t *mb = &pmb->mb;
1255 uint32_t did = mb->un.varWords[1];
1256
1257 if (mb->mbxStatus) {
1258 /* RegLogin failed */
1259 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1260 "0246 RegLogin failed Data: x%x x%x x%x\n",
1261 did, mb->mbxStatus, vport->port_state);
1262 /*
1263 * If RegLogin failed due to lack of HBA resources do not
1264 * retry discovery.
1265 */
1266 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1267 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1268 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1269 return ndlp->nlp_state;
1270 }
1271
1272 /* Put ndlp in npr state set plogi timer for 1 sec */
1273 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1274 spin_lock_irq(shost->host_lock);
1275 ndlp->nlp_flag |= NLP_DELAY_TMO;
1276 spin_unlock_irq(shost->host_lock);
1277 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1278
1279 lpfc_issue_els_logo(vport, ndlp, 0);
1280 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1281 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1282 return ndlp->nlp_state;
1283 }
1284
1285 ndlp->nlp_rpi = mb->un.varWords[0];
1286
1287 /* Only if we are not a fabric nport do we issue PRLI */
1288 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1289 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1290 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1291 lpfc_issue_els_prli(vport, ndlp, 0);
1292 } else {
1293 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1294 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1295 }
1296 return ndlp->nlp_state;
1297 }
1298
1299 static uint32_t
1300 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1301 struct lpfc_nodelist *ndlp,
1302 void *arg,
1303 uint32_t evt)
1304 {
1305 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1306
1307 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1308 spin_lock_irq(shost->host_lock);
1309 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1310 spin_unlock_irq(shost->host_lock);
1311 return ndlp->nlp_state;
1312 } else {
1313 lpfc_drop_node(vport, ndlp);
1314 return NLP_STE_FREED_NODE;
1315 }
1316 }
1317
1318 static uint32_t
1319 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1320 struct lpfc_nodelist *ndlp,
1321 void *arg,
1322 uint32_t evt)
1323 {
1324 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1325
1326 /* Don't do anything that will mess up processing of the
1327 * previous RSCN.
1328 */
1329 if (vport->fc_flag & FC_RSCN_DEFERRED)
1330 return ndlp->nlp_state;
1331
1332 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1333 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1334 spin_lock_irq(shost->host_lock);
1335 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1336 spin_unlock_irq(shost->host_lock);
1337 lpfc_disc_set_adisc(vport, ndlp);
1338 return ndlp->nlp_state;
1339 }
1340
1341 static uint32_t
1342 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1343 void *arg, uint32_t evt)
1344 {
1345 struct lpfc_iocbq *cmdiocb;
1346
1347 cmdiocb = (struct lpfc_iocbq *) arg;
1348
1349 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1350 return ndlp->nlp_state;
1351 }
1352
1353 static uint32_t
1354 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1355 void *arg, uint32_t evt)
1356 {
1357 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1358
1359 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1360 return ndlp->nlp_state;
1361 }
1362
1363 static uint32_t
1364 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1365 void *arg, uint32_t evt)
1366 {
1367 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1368
1369 /* Software abort outstanding PRLI before sending acc */
1370 lpfc_els_abort(vport->phba, ndlp);
1371
1372 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1373 return ndlp->nlp_state;
1374 }
1375
1376 static uint32_t
1377 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1378 void *arg, uint32_t evt)
1379 {
1380 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1381
1382 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1383 return ndlp->nlp_state;
1384 }
1385
1386 /* This routine is envoked when we rcv a PRLO request from a nport
1387 * we are logged into. We should send back a PRLO rsp setting the
1388 * appropriate bits.
1389 * NEXT STATE = PRLI_ISSUE
1390 */
1391 static uint32_t
1392 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1393 void *arg, uint32_t evt)
1394 {
1395 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1396
1397 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1398 return ndlp->nlp_state;
1399 }
1400
1401 static uint32_t
1402 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1403 void *arg, uint32_t evt)
1404 {
1405 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1406 struct lpfc_iocbq *cmdiocb, *rspiocb;
1407 struct lpfc_hba *phba = vport->phba;
1408 IOCB_t *irsp;
1409 PRLI *npr;
1410
1411 cmdiocb = (struct lpfc_iocbq *) arg;
1412 rspiocb = cmdiocb->context_un.rsp_iocb;
1413 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1414
1415 irsp = &rspiocb->iocb;
1416 if (irsp->ulpStatus) {
1417 if ((vport->port_type == LPFC_NPIV_PORT) &&
1418 vport->cfg_restrict_login) {
1419 goto out;
1420 }
1421 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1422 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1423 return ndlp->nlp_state;
1424 }
1425
1426 /* Check out PRLI rsp */
1427 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1428 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1429 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1430 (npr->prliType == PRLI_FCP_TYPE)) {
1431 if (npr->initiatorFunc)
1432 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1433 if (npr->targetFunc)
1434 ndlp->nlp_type |= NLP_FCP_TARGET;
1435 if (npr->Retry)
1436 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1437 }
1438 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1439 (vport->port_type == LPFC_NPIV_PORT) &&
1440 vport->cfg_restrict_login) {
1441 out:
1442 spin_lock_irq(shost->host_lock);
1443 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1444 spin_unlock_irq(shost->host_lock);
1445 lpfc_issue_els_logo(vport, ndlp, 0);
1446
1447 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1448 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1449 return ndlp->nlp_state;
1450 }
1451
1452 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1453 if (ndlp->nlp_type & NLP_FCP_TARGET)
1454 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1455 else
1456 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1457 return ndlp->nlp_state;
1458 }
1459
1460 /*! lpfc_device_rm_prli_issue
1461 *
1462 * \pre
1463 * \post
1464 * \param phba
1465 * \param ndlp
1466 * \param arg
1467 * \param evt
1468 * \return uint32_t
1469 *
1470 * \b Description:
1471 * This routine is envoked when we a request to remove a nport we are in the
1472 * process of PRLIing. We should software abort outstanding prli, unreg
1473 * login, send a logout. We will change node state to UNUSED_NODE, put it
1474 * on plogi list so it can be freed when LOGO completes.
1475 *
1476 */
1477
1478 static uint32_t
1479 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1480 void *arg, uint32_t evt)
1481 {
1482 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1483
1484 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1485 spin_lock_irq(shost->host_lock);
1486 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1487 spin_unlock_irq(shost->host_lock);
1488 return ndlp->nlp_state;
1489 } else {
1490 /* software abort outstanding PLOGI */
1491 lpfc_els_abort(vport->phba, ndlp);
1492
1493 lpfc_drop_node(vport, ndlp);
1494 return NLP_STE_FREED_NODE;
1495 }
1496 }
1497
1498
1499 /*! lpfc_device_recov_prli_issue
1500 *
1501 * \pre
1502 * \post
1503 * \param phba
1504 * \param ndlp
1505 * \param arg
1506 * \param evt
1507 * \return uint32_t
1508 *
1509 * \b Description:
1510 * The routine is envoked when the state of a device is unknown, like
1511 * during a link down. We should remove the nodelist entry from the
1512 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1513 * outstanding PRLI command, then free the node entry.
1514 */
1515 static uint32_t
1516 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1517 struct lpfc_nodelist *ndlp,
1518 void *arg,
1519 uint32_t evt)
1520 {
1521 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1522 struct lpfc_hba *phba = vport->phba;
1523
1524 /* Don't do anything that will mess up processing of the
1525 * previous RSCN.
1526 */
1527 if (vport->fc_flag & FC_RSCN_DEFERRED)
1528 return ndlp->nlp_state;
1529
1530 /* software abort outstanding PRLI */
1531 lpfc_els_abort(phba, ndlp);
1532
1533 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1534 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1535 spin_lock_irq(shost->host_lock);
1536 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1537 spin_unlock_irq(shost->host_lock);
1538 lpfc_disc_set_adisc(vport, ndlp);
1539 return ndlp->nlp_state;
1540 }
1541
1542 static uint32_t
1543 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1544 void *arg, uint32_t evt)
1545 {
1546 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1547
1548 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1549 return ndlp->nlp_state;
1550 }
1551
1552 static uint32_t
1553 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1554 void *arg, uint32_t evt)
1555 {
1556 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1557
1558 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1559 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1560 return ndlp->nlp_state;
1561 }
1562
1563 static uint32_t
1564 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1565 void *arg, uint32_t evt)
1566 {
1567 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1568
1569 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1570 return ndlp->nlp_state;
1571 }
1572
1573 static uint32_t
1574 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1575 void *arg, uint32_t evt)
1576 {
1577 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1578
1579 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1580 return ndlp->nlp_state;
1581 }
1582
1583 static uint32_t
1584 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1585 void *arg, uint32_t evt)
1586 {
1587 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1588
1589 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1590 return ndlp->nlp_state;
1591 }
1592
1593 static uint32_t
1594 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1595 struct lpfc_nodelist *ndlp,
1596 void *arg,
1597 uint32_t evt)
1598 {
1599 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1600
1601 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1602 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1603 spin_lock_irq(shost->host_lock);
1604 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1605 spin_unlock_irq(shost->host_lock);
1606 lpfc_disc_set_adisc(vport, ndlp);
1607
1608 return ndlp->nlp_state;
1609 }
1610
1611 static uint32_t
1612 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1613 void *arg, uint32_t evt)
1614 {
1615 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1616
1617 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1618 return ndlp->nlp_state;
1619 }
1620
1621 static uint32_t
1622 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1623 void *arg, uint32_t evt)
1624 {
1625 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1626
1627 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1628 return ndlp->nlp_state;
1629 }
1630
1631 static uint32_t
1632 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1633 void *arg, uint32_t evt)
1634 {
1635 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1636
1637 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1638 return ndlp->nlp_state;
1639 }
1640
1641 static uint32_t
1642 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1643 struct lpfc_nodelist *ndlp,
1644 void *arg, uint32_t evt)
1645 {
1646 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1647
1648 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1649 return ndlp->nlp_state;
1650 }
1651
1652 static uint32_t
1653 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1654 void *arg, uint32_t evt)
1655 {
1656 struct lpfc_hba *phba = vport->phba;
1657 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1658
1659 /* flush the target */
1660 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1661 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1662
1663 /* Treat like rcv logo */
1664 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1665 return ndlp->nlp_state;
1666 }
1667
1668 static uint32_t
1669 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1670 struct lpfc_nodelist *ndlp,
1671 void *arg,
1672 uint32_t evt)
1673 {
1674 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1675
1676 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1677 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1678 spin_lock_irq(shost->host_lock);
1679 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1680 spin_unlock_irq(shost->host_lock);
1681 lpfc_disc_set_adisc(vport, ndlp);
1682 return ndlp->nlp_state;
1683 }
1684
1685 static uint32_t
1686 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1687 void *arg, uint32_t evt)
1688 {
1689 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1690 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1691
1692 /* Ignore PLOGI if we have an outstanding LOGO */
1693 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1694 return ndlp->nlp_state;
1695 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1696 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1697 spin_lock_irq(shost->host_lock);
1698 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1699 spin_unlock_irq(shost->host_lock);
1700 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1701 /* send PLOGI immediately, move to PLOGI issue state */
1702 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1703 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1704 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1705 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1706 }
1707 }
1708 return ndlp->nlp_state;
1709 }
1710
1711 static uint32_t
1712 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1713 void *arg, uint32_t evt)
1714 {
1715 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1716 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1717 struct ls_rjt stat;
1718
1719 memset(&stat, 0, sizeof (struct ls_rjt));
1720 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1721 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1722 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1723
1724 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1725 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1726 spin_lock_irq(shost->host_lock);
1727 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1728 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1729 spin_unlock_irq(shost->host_lock);
1730 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1731 lpfc_issue_els_adisc(vport, ndlp, 0);
1732 } else {
1733 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1734 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1735 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1736 }
1737 }
1738 return ndlp->nlp_state;
1739 }
1740
1741 static uint32_t
1742 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1743 void *arg, uint32_t evt)
1744 {
1745 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1746
1747 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1748 return ndlp->nlp_state;
1749 }
1750
1751 static uint32_t
1752 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1753 void *arg, uint32_t evt)
1754 {
1755 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1756
1757 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1758 /*
1759 * Do not start discovery if discovery is about to start
1760 * or discovery in progress for this node. Starting discovery
1761 * here will affect the counting of discovery threads.
1762 */
1763 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1764 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1765 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1766 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1767 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1768 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1769 lpfc_issue_els_adisc(vport, ndlp, 0);
1770 } else {
1771 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1772 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1773 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1774 }
1775 }
1776 return ndlp->nlp_state;
1777 }
1778
1779 static uint32_t
1780 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1781 void *arg, uint32_t evt)
1782 {
1783 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1784 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1785
1786 spin_lock_irq(shost->host_lock);
1787 ndlp->nlp_flag |= NLP_LOGO_ACC;
1788 spin_unlock_irq(shost->host_lock);
1789
1790 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1791
1792 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1793 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1794 spin_lock_irq(shost->host_lock);
1795 ndlp->nlp_flag |= NLP_DELAY_TMO;
1796 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1797 spin_unlock_irq(shost->host_lock);
1798 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1799 } else {
1800 spin_lock_irq(shost->host_lock);
1801 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1802 spin_unlock_irq(shost->host_lock);
1803 }
1804 return ndlp->nlp_state;
1805 }
1806
1807 static uint32_t
1808 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1809 void *arg, uint32_t evt)
1810 {
1811 struct lpfc_iocbq *cmdiocb, *rspiocb;
1812 IOCB_t *irsp;
1813
1814 cmdiocb = (struct lpfc_iocbq *) arg;
1815 rspiocb = cmdiocb->context_un.rsp_iocb;
1816
1817 irsp = &rspiocb->iocb;
1818 if (irsp->ulpStatus) {
1819 ndlp->nlp_flag |= NLP_DEFER_RM;
1820 return NLP_STE_FREED_NODE;
1821 }
1822 return ndlp->nlp_state;
1823 }
1824
1825 static uint32_t
1826 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1827 void *arg, uint32_t evt)
1828 {
1829 struct lpfc_iocbq *cmdiocb, *rspiocb;
1830 IOCB_t *irsp;
1831
1832 cmdiocb = (struct lpfc_iocbq *) arg;
1833 rspiocb = cmdiocb->context_un.rsp_iocb;
1834
1835 irsp = &rspiocb->iocb;
1836 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1837 lpfc_drop_node(vport, ndlp);
1838 return NLP_STE_FREED_NODE;
1839 }
1840 return ndlp->nlp_state;
1841 }
1842
1843 static uint32_t
1844 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1845 void *arg, uint32_t evt)
1846 {
1847 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1848 if (ndlp->nlp_DID == Fabric_DID) {
1849 spin_lock_irq(shost->host_lock);
1850 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1851 spin_unlock_irq(shost->host_lock);
1852 }
1853 lpfc_unreg_rpi(vport, ndlp);
1854 return ndlp->nlp_state;
1855 }
1856
1857 static uint32_t
1858 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1859 void *arg, uint32_t evt)
1860 {
1861 struct lpfc_iocbq *cmdiocb, *rspiocb;
1862 IOCB_t *irsp;
1863
1864 cmdiocb = (struct lpfc_iocbq *) arg;
1865 rspiocb = cmdiocb->context_un.rsp_iocb;
1866
1867 irsp = &rspiocb->iocb;
1868 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1869 lpfc_drop_node(vport, ndlp);
1870 return NLP_STE_FREED_NODE;
1871 }
1872 return ndlp->nlp_state;
1873 }
1874
1875 static uint32_t
1876 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1877 struct lpfc_nodelist *ndlp,
1878 void *arg, uint32_t evt)
1879 {
1880 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1881 MAILBOX_t *mb = &pmb->mb;
1882
1883 if (!mb->mbxStatus)
1884 ndlp->nlp_rpi = mb->un.varWords[0];
1885 else {
1886 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1887 lpfc_drop_node(vport, ndlp);
1888 return NLP_STE_FREED_NODE;
1889 }
1890 }
1891 return ndlp->nlp_state;
1892 }
1893
1894 static uint32_t
1895 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1896 void *arg, uint32_t evt)
1897 {
1898 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1899
1900 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1901 spin_lock_irq(shost->host_lock);
1902 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1903 spin_unlock_irq(shost->host_lock);
1904 return ndlp->nlp_state;
1905 }
1906 lpfc_drop_node(vport, ndlp);
1907 return NLP_STE_FREED_NODE;
1908 }
1909
1910 static uint32_t
1911 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1912 void *arg, uint32_t evt)
1913 {
1914 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1915
1916 /* Don't do anything that will mess up processing of the
1917 * previous RSCN.
1918 */
1919 if (vport->fc_flag & FC_RSCN_DEFERRED)
1920 return ndlp->nlp_state;
1921
1922 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1923 spin_lock_irq(shost->host_lock);
1924 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1925 spin_unlock_irq(shost->host_lock);
1926 return ndlp->nlp_state;
1927 }
1928
1929
1930 /* This next section defines the NPort Discovery State Machine */
1931
1932 /* There are 4 different double linked lists nodelist entries can reside on.
1933 * The plogi list and adisc list are used when Link Up discovery or RSCN
1934 * processing is needed. Each list holds the nodes that we will send PLOGI
1935 * or ADISC on. These lists will keep track of what nodes will be effected
1936 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1937 * The unmapped_list will contain all nodes that we have successfully logged
1938 * into at the Fibre Channel level. The mapped_list will contain all nodes
1939 * that are mapped FCP targets.
1940 */
1941 /*
1942 * The bind list is a list of undiscovered (potentially non-existent) nodes
1943 * that we have saved binding information on. This information is used when
1944 * nodes transition from the unmapped to the mapped list.
1945 */
1946 /* For UNUSED_NODE state, the node has just been allocated .
1947 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1948 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1949 * and put on the unmapped list. For ADISC processing, the node is taken off
1950 * the ADISC list and placed on either the mapped or unmapped list (depending
1951 * on its previous state). Once on the unmapped list, a PRLI is issued and the
1952 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1953 * changed to UNMAPPED_NODE. If the completion indicates a mapped
1954 * node, the node is taken off the unmapped list. The binding list is checked
1955 * for a valid binding, or a binding is automatically assigned. If binding
1956 * assignment is unsuccessful, the node is left on the unmapped list. If
1957 * binding assignment is successful, the associated binding list entry (if
1958 * any) is removed, and the node is placed on the mapped list.
1959 */
1960 /*
1961 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1962 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1963 * expire, all effected nodes will receive a DEVICE_RM event.
1964 */
1965 /*
1966 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1967 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
1968 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1969 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1970 * we will first process the ADISC list. 32 entries are processed initially and
1971 * ADISC is initited for each one. Completions / Events for each node are
1972 * funnelled thru the state machine. As each node finishes ADISC processing, it
1973 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1974 * waiting, and the ADISC list count is identically 0, then we are done. For
1975 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1976 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1977 * list. 32 entries are processed initially and PLOGI is initited for each one.
1978 * Completions / Events for each node are funnelled thru the state machine. As
1979 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1980 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1981 * indentically 0, then we are done. We have now completed discovery / RSCN
1982 * handling. Upon completion, ALL nodes should be on either the mapped or
1983 * unmapped lists.
1984 */
1985
1986 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1987 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1988 /* Action routine Event Current State */
1989 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
1990 lpfc_rcv_els_unused_node, /* RCV_PRLI */
1991 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
1992 lpfc_rcv_els_unused_node, /* RCV_ADISC */
1993 lpfc_rcv_els_unused_node, /* RCV_PDISC */
1994 lpfc_rcv_els_unused_node, /* RCV_PRLO */
1995 lpfc_disc_illegal, /* CMPL_PLOGI */
1996 lpfc_disc_illegal, /* CMPL_PRLI */
1997 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
1998 lpfc_disc_illegal, /* CMPL_ADISC */
1999 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2000 lpfc_device_rm_unused_node, /* DEVICE_RM */
2001 lpfc_disc_illegal, /* DEVICE_RECOVERY */
2002
2003 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2004 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2005 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2006 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2007 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2008 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2009 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2010 lpfc_disc_illegal, /* CMPL_PRLI */
2011 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2012 lpfc_disc_illegal, /* CMPL_ADISC */
2013 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2014 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2015 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2016
2017 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2018 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2019 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2020 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2021 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2022 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2023 lpfc_disc_illegal, /* CMPL_PLOGI */
2024 lpfc_disc_illegal, /* CMPL_PRLI */
2025 lpfc_disc_illegal, /* CMPL_LOGO */
2026 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2027 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2028 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2029 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2030
2031 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2032 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2033 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2034 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2035 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2036 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2037 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2038 lpfc_disc_illegal, /* CMPL_PRLI */
2039 lpfc_disc_illegal, /* CMPL_LOGO */
2040 lpfc_disc_illegal, /* CMPL_ADISC */
2041 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2042 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2043 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2044
2045 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2046 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2047 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2048 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2049 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2050 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2051 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2052 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2053 lpfc_disc_illegal, /* CMPL_LOGO */
2054 lpfc_disc_illegal, /* CMPL_ADISC */
2055 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2056 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2057 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2058
2059 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2060 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2061 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2062 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2063 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2064 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2065 lpfc_disc_illegal, /* CMPL_PLOGI */
2066 lpfc_disc_illegal, /* CMPL_PRLI */
2067 lpfc_disc_illegal, /* CMPL_LOGO */
2068 lpfc_disc_illegal, /* CMPL_ADISC */
2069 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2070 lpfc_disc_illegal, /* DEVICE_RM */
2071 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2072
2073 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2074 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2075 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2076 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2077 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2078 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2079 lpfc_disc_illegal, /* CMPL_PLOGI */
2080 lpfc_disc_illegal, /* CMPL_PRLI */
2081 lpfc_disc_illegal, /* CMPL_LOGO */
2082 lpfc_disc_illegal, /* CMPL_ADISC */
2083 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2084 lpfc_disc_illegal, /* DEVICE_RM */
2085 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2086
2087 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2088 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2089 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2090 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2091 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2092 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2093 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2094 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2095 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2096 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2097 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2098 lpfc_device_rm_npr_node, /* DEVICE_RM */
2099 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2100 };
2101
2102 int
2103 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2104 void *arg, uint32_t evt)
2105 {
2106 uint32_t cur_state, rc;
2107 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2108 uint32_t);
2109 uint32_t got_ndlp = 0;
2110
2111 if (lpfc_nlp_get(ndlp))
2112 got_ndlp = 1;
2113
2114 cur_state = ndlp->nlp_state;
2115
2116 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2117 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2118 "0211 DSM in event x%x on NPort x%x in "
2119 "state %d Data: x%x\n",
2120 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2121
2122 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2123 "DSM in: evt:%d ste:%d did:x%x",
2124 evt, cur_state, ndlp->nlp_DID);
2125
2126 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2127 rc = (func) (vport, ndlp, arg, evt);
2128
2129 /* DSM out state <rc> on NPort <nlp_DID> */
2130 if (got_ndlp) {
2131 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2132 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2133 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2134
2135 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2136 "DSM out: ste:%d did:x%x flg:x%x",
2137 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2138 /* Decrement the ndlp reference count held for this function */
2139 lpfc_nlp_put(ndlp);
2140 } else {
2141 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2142 "0213 DSM out state %d on NPort free\n", rc);
2143
2144 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2145 "DSM out: ste:%d did:x%x flg:x%x",
2146 rc, 0, 0);
2147 }
2148
2149 return rc;
2150 }
Linux kernel - Deliverables
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