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staging: brcm80211: assure common sources are truly common
[zen-stable.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blobd85a7423a694652f29449e5463c3840fa7a84c09
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 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/slab.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_sli4.h"
36 #include "lpfc_nl.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45
46 /* Called to verify a rcv'ed ADISC was intended for us. */
47 static int
48 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
49 struct lpfc_name *nn, struct lpfc_name *pn)
50 {
51 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
52 * table entry for that node.
53 */
54 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
55 return 0;
56
57 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
58 return 0;
59
60 /* we match, return success */
61 return 1;
62 }
63
64 int
65 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
66 struct serv_parm *sp, uint32_t class, int flogi)
67 {
68 volatile struct serv_parm *hsp = &vport->fc_sparam;
69 uint16_t hsp_value, ssp_value = 0;
70
71 /*
72 * The receive data field size and buffer-to-buffer receive data field
73 * size entries are 16 bits but are represented as two 8-bit fields in
74 * the driver data structure to account for rsvd bits and other control
75 * bits. Reconstruct and compare the fields as a 16-bit values before
76 * correcting the byte values.
77 */
78 if (sp->cls1.classValid) {
79 if (!flogi) {
80 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
81 hsp->cls1.rcvDataSizeLsb);
82 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
83 sp->cls1.rcvDataSizeLsb);
84 if (!ssp_value)
85 goto bad_service_param;
86 if (ssp_value > hsp_value) {
87 sp->cls1.rcvDataSizeLsb =
88 hsp->cls1.rcvDataSizeLsb;
89 sp->cls1.rcvDataSizeMsb =
90 hsp->cls1.rcvDataSizeMsb;
91 }
92 }
93 } else if (class == CLASS1)
94 goto bad_service_param;
95 if (sp->cls2.classValid) {
96 if (!flogi) {
97 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
98 hsp->cls2.rcvDataSizeLsb);
99 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
100 sp->cls2.rcvDataSizeLsb);
101 if (!ssp_value)
102 goto bad_service_param;
103 if (ssp_value > hsp_value) {
104 sp->cls2.rcvDataSizeLsb =
105 hsp->cls2.rcvDataSizeLsb;
106 sp->cls2.rcvDataSizeMsb =
107 hsp->cls2.rcvDataSizeMsb;
108 }
109 }
110 } else if (class == CLASS2)
111 goto bad_service_param;
112 if (sp->cls3.classValid) {
113 if (!flogi) {
114 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
115 hsp->cls3.rcvDataSizeLsb);
116 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
117 sp->cls3.rcvDataSizeLsb);
118 if (!ssp_value)
119 goto bad_service_param;
120 if (ssp_value > hsp_value) {
121 sp->cls3.rcvDataSizeLsb =
122 hsp->cls3.rcvDataSizeLsb;
123 sp->cls3.rcvDataSizeMsb =
124 hsp->cls3.rcvDataSizeMsb;
125 }
126 }
127 } else if (class == CLASS3)
128 goto bad_service_param;
129
130 /*
131 * Preserve the upper four bits of the MSB from the PLOGI response.
132 * These bits contain the Buffer-to-Buffer State Change Number
133 * from the target and need to be passed to the FW.
134 */
135 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
136 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
137 if (ssp_value > hsp_value) {
138 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
139 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
140 (hsp->cmn.bbRcvSizeMsb & 0x0F);
141 }
142
143 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
144 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
145 return 1;
146 bad_service_param:
147 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
148 "0207 Device %x "
149 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
150 "invalid service parameters. Ignoring device.\n",
151 ndlp->nlp_DID,
152 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
153 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
154 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
155 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
156 return 0;
157 }
158
159 static void *
160 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
161 struct lpfc_iocbq *rspiocb)
162 {
163 struct lpfc_dmabuf *pcmd, *prsp;
164 uint32_t *lp;
165 void *ptr = NULL;
166 IOCB_t *irsp;
167
168 irsp = &rspiocb->iocb;
169 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
170
171 /* For lpfc_els_abort, context2 could be zero'ed to delay
172 * freeing associated memory till after ABTS completes.
173 */
174 if (pcmd) {
175 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
176 list);
177 if (prsp) {
178 lp = (uint32_t *) prsp->virt;
179 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
180 }
181 } else {
182 /* Force ulpStatus error since we are returning NULL ptr */
183 if (!(irsp->ulpStatus)) {
184 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
185 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
186 }
187 ptr = NULL;
188 }
189 return ptr;
190 }
191
192
193
194 /*
195 * Free resources / clean up outstanding I/Os
196 * associated with a LPFC_NODELIST entry. This
197 * routine effectively results in a "software abort".
198 */
199 int
200 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
201 {
202 LIST_HEAD(completions);
203 LIST_HEAD(txcmplq_completions);
204 LIST_HEAD(abort_list);
205 struct lpfc_sli *psli = &phba->sli;
206 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
207 struct lpfc_iocbq *iocb, *next_iocb;
208
209 /* Abort outstanding I/O on NPort <nlp_DID> */
210 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
211 "2819 Abort outstanding I/O on NPort x%x "
212 "Data: x%x x%x x%x\n",
213 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
214 ndlp->nlp_rpi);
215
216 lpfc_fabric_abort_nport(ndlp);
217
218 /* First check the txq */
219 spin_lock_irq(&phba->hbalock);
220 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
221 /* Check to see if iocb matches the nport we are looking for */
222 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
223 /* It matches, so deque and call compl with anp error */
224 list_move_tail(&iocb->list, &completions);
225 pring->txq_cnt--;
226 }
227 }
228
229 /* Next check the txcmplq */
230 list_splice_init(&pring->txcmplq, &txcmplq_completions);
231 spin_unlock_irq(&phba->hbalock);
232
233 list_for_each_entry_safe(iocb, next_iocb, &txcmplq_completions, list) {
234 /* Check to see if iocb matches the nport we are looking for */
235 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
236 list_add_tail(&iocb->dlist, &abort_list);
237 }
238 spin_lock_irq(&phba->hbalock);
239 list_splice(&txcmplq_completions, &pring->txcmplq);
240 spin_unlock_irq(&phba->hbalock);
241
242 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
243 spin_lock_irq(&phba->hbalock);
244 list_del_init(&iocb->dlist);
245 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
246 spin_unlock_irq(&phba->hbalock);
247 }
248
249 /* Cancel all the IOCBs from the completions list */
250 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
251 IOERR_SLI_ABORTED);
252
253 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
254 return 0;
255 }
256
257 static int
258 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
259 struct lpfc_iocbq *cmdiocb)
260 {
261 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
262 struct lpfc_hba *phba = vport->phba;
263 struct lpfc_dmabuf *pcmd;
264 uint32_t *lp;
265 IOCB_t *icmd;
266 struct serv_parm *sp;
267 LPFC_MBOXQ_t *mbox;
268 struct ls_rjt stat;
269 int rc;
270
271 memset(&stat, 0, sizeof (struct ls_rjt));
272 if (vport->port_state <= LPFC_FDISC) {
273 /* Before responding to PLOGI, check for pt2pt mode.
274 * If we are pt2pt, with an outstanding FLOGI, abort
275 * the FLOGI and resend it first.
276 */
277 if (vport->fc_flag & FC_PT2PT) {
278 lpfc_els_abort_flogi(phba);
279 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
280 /* If the other side is supposed to initiate
281 * the PLOGI anyway, just ACC it now and
282 * move on with discovery.
283 */
284 phba->fc_edtov = FF_DEF_EDTOV;
285 phba->fc_ratov = FF_DEF_RATOV;
286 /* Start discovery - this should just do
287 CLEAR_LA */
288 lpfc_disc_start(vport);
289 } else
290 lpfc_initial_flogi(vport);
291 } else {
292 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
293 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
294 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
295 ndlp, NULL);
296 return 0;
297 }
298 }
299 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
300 lp = (uint32_t *) pcmd->virt;
301 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
302 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
303 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
304 "0140 PLOGI Reject: invalid nname\n");
305 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
306 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
307 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
308 NULL);
309 return 0;
310 }
311 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
312 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
313 "0141 PLOGI Reject: invalid pname\n");
314 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
315 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
316 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
317 NULL);
318 return 0;
319 }
320 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
321 /* Reject this request because invalid parameters */
322 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
323 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
324 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
325 NULL);
326 return 0;
327 }
328 icmd = &cmdiocb->iocb;
329
330 /* PLOGI chkparm OK */
331 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
332 "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
333 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
334 ndlp->nlp_rpi);
335
336 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
337 ndlp->nlp_fcp_info |= CLASS2;
338 else
339 ndlp->nlp_fcp_info |= CLASS3;
340
341 ndlp->nlp_class_sup = 0;
342 if (sp->cls1.classValid)
343 ndlp->nlp_class_sup |= FC_COS_CLASS1;
344 if (sp->cls2.classValid)
345 ndlp->nlp_class_sup |= FC_COS_CLASS2;
346 if (sp->cls3.classValid)
347 ndlp->nlp_class_sup |= FC_COS_CLASS3;
348 if (sp->cls4.classValid)
349 ndlp->nlp_class_sup |= FC_COS_CLASS4;
350 ndlp->nlp_maxframe =
351 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
352
353 /* no need to reg_login if we are already in one of these states */
354 switch (ndlp->nlp_state) {
355 case NLP_STE_NPR_NODE:
356 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
357 break;
358 case NLP_STE_REG_LOGIN_ISSUE:
359 case NLP_STE_PRLI_ISSUE:
360 case NLP_STE_UNMAPPED_NODE:
361 case NLP_STE_MAPPED_NODE:
362 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
363 return 1;
364 }
365
366 if ((vport->fc_flag & FC_PT2PT) &&
367 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
368 /* rcv'ed PLOGI decides what our NPortId will be */
369 vport->fc_myDID = icmd->un.rcvels.parmRo;
370 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
371 if (mbox == NULL)
372 goto out;
373 lpfc_config_link(phba, mbox);
374 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
375 mbox->vport = vport;
376 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
377 if (rc == MBX_NOT_FINISHED) {
378 mempool_free(mbox, phba->mbox_mem_pool);
379 goto out;
380 }
381
382 lpfc_can_disctmo(vport);
383 }
384 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
385 if (!mbox)
386 goto out;
387
388 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
389 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
390 if (rc) {
391 mempool_free(mbox, phba->mbox_mem_pool);
392 goto out;
393 }
394
395 /* ACC PLOGI rsp command needs to execute first,
396 * queue this mbox command to be processed later.
397 */
398 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
399 /*
400 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
401 * command issued in lpfc_cmpl_els_acc().
402 */
403 mbox->vport = vport;
404 spin_lock_irq(shost->host_lock);
405 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
406 spin_unlock_irq(shost->host_lock);
407
408 /*
409 * If there is an outstanding PLOGI issued, abort it before
410 * sending ACC rsp for received PLOGI. If pending plogi
411 * is not canceled here, the plogi will be rejected by
412 * remote port and will be retried. On a configuration with
413 * single discovery thread, this will cause a huge delay in
414 * discovery. Also this will cause multiple state machines
415 * running in parallel for this node.
416 */
417 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
418 /* software abort outstanding PLOGI */
419 lpfc_els_abort(phba, ndlp);
420 }
421
422 if ((vport->port_type == LPFC_NPIV_PORT &&
423 vport->cfg_restrict_login)) {
424
425 /* In order to preserve RPIs, we want to cleanup
426 * the default RPI the firmware created to rcv
427 * this ELS request. The only way to do this is
428 * to register, then unregister the RPI.
429 */
430 spin_lock_irq(shost->host_lock);
431 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
432 spin_unlock_irq(shost->host_lock);
433 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
434 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
435 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
436 ndlp, mbox);
437 return 1;
438 }
439 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
440 return 1;
441 out:
442 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
443 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
444 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
445 return 0;
446 }
447
448 static int
449 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
450 struct lpfc_iocbq *cmdiocb)
451 {
452 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
453 struct lpfc_dmabuf *pcmd;
454 struct serv_parm *sp;
455 struct lpfc_name *pnn, *ppn;
456 struct ls_rjt stat;
457 ADISC *ap;
458 IOCB_t *icmd;
459 uint32_t *lp;
460 uint32_t cmd;
461
462 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
463 lp = (uint32_t *) pcmd->virt;
464
465 cmd = *lp++;
466 if (cmd == ELS_CMD_ADISC) {
467 ap = (ADISC *) lp;
468 pnn = (struct lpfc_name *) & ap->nodeName;
469 ppn = (struct lpfc_name *) & ap->portName;
470 } else {
471 sp = (struct serv_parm *) lp;
472 pnn = (struct lpfc_name *) & sp->nodeName;
473 ppn = (struct lpfc_name *) & sp->portName;
474 }
475
476 icmd = &cmdiocb->iocb;
477 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
478 if (cmd == ELS_CMD_ADISC) {
479 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
480 } else {
481 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
482 NULL);
483 }
484 return 1;
485 }
486 /* Reject this request because invalid parameters */
487 stat.un.b.lsRjtRsvd0 = 0;
488 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
489 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
490 stat.un.b.vendorUnique = 0;
491 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
492
493 /* 1 sec timeout */
494 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
495
496 spin_lock_irq(shost->host_lock);
497 ndlp->nlp_flag |= NLP_DELAY_TMO;
498 spin_unlock_irq(shost->host_lock);
499 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
500 ndlp->nlp_prev_state = ndlp->nlp_state;
501 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
502 return 0;
503 }
504
505 static int
506 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
507 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
508 {
509 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
510 struct lpfc_hba *phba = vport->phba;
511 struct lpfc_vport **vports;
512 int i, active_vlink_present = 0 ;
513
514 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
515 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
516 * PLOGIs during LOGO storms from a device.
517 */
518 spin_lock_irq(shost->host_lock);
519 ndlp->nlp_flag |= NLP_LOGO_ACC;
520 spin_unlock_irq(shost->host_lock);
521 if (els_cmd == ELS_CMD_PRLO)
522 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
523 else
524 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
525 if (ndlp->nlp_DID == Fabric_DID) {
526 if (vport->port_state <= LPFC_FDISC)
527 goto out;
528 lpfc_linkdown_port(vport);
529 spin_lock_irq(shost->host_lock);
530 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
531 spin_unlock_irq(shost->host_lock);
532 vports = lpfc_create_vport_work_array(phba);
533 if (vports) {
534 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
535 i++) {
536 if ((!(vports[i]->fc_flag &
537 FC_VPORT_LOGO_RCVD)) &&
538 (vports[i]->port_state > LPFC_FDISC)) {
539 active_vlink_present = 1;
540 break;
541 }
542 }
543 lpfc_destroy_vport_work_array(phba, vports);
544 }
545
546 if (active_vlink_present) {
547 /*
548 * If there are other active VLinks present,
549 * re-instantiate the Vlink using FDISC.
550 */
551 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
552 spin_lock_irq(shost->host_lock);
553 ndlp->nlp_flag |= NLP_DELAY_TMO;
554 spin_unlock_irq(shost->host_lock);
555 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
556 vport->port_state = LPFC_FDISC;
557 } else {
558 spin_lock_irq(shost->host_lock);
559 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
560 spin_unlock_irq(shost->host_lock);
561 lpfc_retry_pport_discovery(phba);
562 }
563 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
564 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
565 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
566 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
567 /* Only try to re-login if this is NOT a Fabric Node */
568 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
569 spin_lock_irq(shost->host_lock);
570 ndlp->nlp_flag |= NLP_DELAY_TMO;
571 spin_unlock_irq(shost->host_lock);
572
573 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
574 }
575 out:
576 ndlp->nlp_prev_state = ndlp->nlp_state;
577 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
578
579 spin_lock_irq(shost->host_lock);
580 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
581 spin_unlock_irq(shost->host_lock);
582 /* The driver has to wait until the ACC completes before it continues
583 * processing the LOGO. The action will resume in
584 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
585 * unreg_login, the driver waits so the ACC does not get aborted.
586 */
587 return 0;
588 }
589
590 static void
591 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
592 struct lpfc_iocbq *cmdiocb)
593 {
594 struct lpfc_dmabuf *pcmd;
595 uint32_t *lp;
596 PRLI *npr;
597 struct fc_rport *rport = ndlp->rport;
598 u32 roles;
599
600 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
601 lp = (uint32_t *) pcmd->virt;
602 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
603
604 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
605 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
606 if (npr->prliType == PRLI_FCP_TYPE) {
607 if (npr->initiatorFunc)
608 ndlp->nlp_type |= NLP_FCP_INITIATOR;
609 if (npr->targetFunc)
610 ndlp->nlp_type |= NLP_FCP_TARGET;
611 if (npr->Retry)
612 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
613 }
614 if (rport) {
615 /* We need to update the rport role values */
616 roles = FC_RPORT_ROLE_UNKNOWN;
617 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
618 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
619 if (ndlp->nlp_type & NLP_FCP_TARGET)
620 roles |= FC_RPORT_ROLE_FCP_TARGET;
621
622 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
623 "rport rolechg: role:x%x did:x%x flg:x%x",
624 roles, ndlp->nlp_DID, ndlp->nlp_flag);
625
626 fc_remote_port_rolechg(rport, roles);
627 }
628 }
629
630 static uint32_t
631 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
632 {
633 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
634
635 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
636 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
637 return 0;
638 }
639
640 if (!(vport->fc_flag & FC_PT2PT)) {
641 /* Check config parameter use-adisc or FCP-2 */
642 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
643 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
644 (ndlp->nlp_type & NLP_FCP_TARGET))) {
645 spin_lock_irq(shost->host_lock);
646 ndlp->nlp_flag |= NLP_NPR_ADISC;
647 spin_unlock_irq(shost->host_lock);
648 return 1;
649 }
650 }
651 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
652 lpfc_unreg_rpi(vport, ndlp);
653 return 0;
654 }
655 /**
656 * lpfc_release_rpi - Release a RPI by issueing unreg_login mailbox cmd.
657 * @phba : Pointer to lpfc_hba structure.
658 * @vport: Pointer to lpfc_vport structure.
659 * @rpi : rpi to be release.
660 *
661 * This function will send a unreg_login mailbox command to the firmware
662 * to release a rpi.
663 **/
664 void
665 lpfc_release_rpi(struct lpfc_hba *phba,
666 struct lpfc_vport *vport,
667 uint16_t rpi)
668 {
669 LPFC_MBOXQ_t *pmb;
670 int rc;
671
672 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
673 GFP_KERNEL);
674 if (!pmb)
675 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
676 "2796 mailbox memory allocation failed \n");
677 else {
678 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
679 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
680 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
681 if (rc == MBX_NOT_FINISHED)
682 mempool_free(pmb, phba->mbox_mem_pool);
683 }
684 }
685
686 static uint32_t
687 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
688 void *arg, uint32_t evt)
689 {
690 struct lpfc_hba *phba;
691 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
692 MAILBOX_t *mb;
693 uint16_t rpi;
694
695 phba = vport->phba;
696 /* Release the RPI if reglogin completing */
697 if (!(phba->pport->load_flag & FC_UNLOADING) &&
698 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
699 (!pmb->u.mb.mbxStatus)) {
700 mb = &pmb->u.mb;
701 rpi = pmb->u.mb.un.varWords[0];
702 lpfc_release_rpi(phba, vport, rpi);
703 }
704 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
705 "0271 Illegal State Transition: node x%x "
706 "event x%x, state x%x Data: x%x x%x\n",
707 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
708 ndlp->nlp_flag);
709 return ndlp->nlp_state;
710 }
711
712 static uint32_t
713 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
714 void *arg, uint32_t evt)
715 {
716 /* This transition is only legal if we previously
717 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
718 * working on the same NPortID, do nothing for this thread
719 * to stop it.
720 */
721 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
722 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
723 "0272 Illegal State Transition: node x%x "
724 "event x%x, state x%x Data: x%x x%x\n",
725 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
726 ndlp->nlp_flag);
727 }
728 return ndlp->nlp_state;
729 }
730
731 /* Start of Discovery State Machine routines */
732
733 static uint32_t
734 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
735 void *arg, uint32_t evt)
736 {
737 struct lpfc_iocbq *cmdiocb;
738
739 cmdiocb = (struct lpfc_iocbq *) arg;
740
741 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
742 return ndlp->nlp_state;
743 }
744 return NLP_STE_FREED_NODE;
745 }
746
747 static uint32_t
748 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
749 void *arg, uint32_t evt)
750 {
751 lpfc_issue_els_logo(vport, ndlp, 0);
752 return ndlp->nlp_state;
753 }
754
755 static uint32_t
756 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
757 void *arg, uint32_t evt)
758 {
759 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
760 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
761
762 spin_lock_irq(shost->host_lock);
763 ndlp->nlp_flag |= NLP_LOGO_ACC;
764 spin_unlock_irq(shost->host_lock);
765 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
766
767 return ndlp->nlp_state;
768 }
769
770 static uint32_t
771 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
772 void *arg, uint32_t evt)
773 {
774 return NLP_STE_FREED_NODE;
775 }
776
777 static uint32_t
778 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
779 void *arg, uint32_t evt)
780 {
781 return NLP_STE_FREED_NODE;
782 }
783
784 static uint32_t
785 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
786 void *arg, uint32_t evt)
787 {
788 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
789 struct lpfc_hba *phba = vport->phba;
790 struct lpfc_iocbq *cmdiocb = arg;
791 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
792 uint32_t *lp = (uint32_t *) pcmd->virt;
793 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
794 struct ls_rjt stat;
795 int port_cmp;
796
797 memset(&stat, 0, sizeof (struct ls_rjt));
798
799 /* For a PLOGI, we only accept if our portname is less
800 * than the remote portname.
801 */
802 phba->fc_stat.elsLogiCol++;
803 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
804 sizeof(struct lpfc_name));
805
806 if (port_cmp >= 0) {
807 /* Reject this request because the remote node will accept
808 ours */
809 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
810 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
811 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
812 NULL);
813 } else {
814 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
815 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
816 (vport->num_disc_nodes)) {
817 spin_lock_irq(shost->host_lock);
818 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
819 spin_unlock_irq(shost->host_lock);
820 /* Check if there are more PLOGIs to be sent */
821 lpfc_more_plogi(vport);
822 if (vport->num_disc_nodes == 0) {
823 spin_lock_irq(shost->host_lock);
824 vport->fc_flag &= ~FC_NDISC_ACTIVE;
825 spin_unlock_irq(shost->host_lock);
826 lpfc_can_disctmo(vport);
827 lpfc_end_rscn(vport);
828 }
829 }
830 } /* If our portname was less */
831
832 return ndlp->nlp_state;
833 }
834
835 static uint32_t
836 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
837 void *arg, uint32_t evt)
838 {
839 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
840 struct ls_rjt stat;
841
842 memset(&stat, 0, sizeof (struct ls_rjt));
843 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
844 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
845 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
846 return ndlp->nlp_state;
847 }
848
849 static uint32_t
850 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
851 void *arg, uint32_t evt)
852 {
853 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
854
855 /* software abort outstanding PLOGI */
856 lpfc_els_abort(vport->phba, ndlp);
857
858 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
859 return ndlp->nlp_state;
860 }
861
862 static uint32_t
863 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
864 void *arg, uint32_t evt)
865 {
866 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
867 struct lpfc_hba *phba = vport->phba;
868 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
869
870 /* software abort outstanding PLOGI */
871 lpfc_els_abort(phba, ndlp);
872
873 if (evt == NLP_EVT_RCV_LOGO) {
874 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
875 } else {
876 lpfc_issue_els_logo(vport, ndlp, 0);
877 }
878
879 /* Put ndlp in npr state set plogi timer for 1 sec */
880 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
881 spin_lock_irq(shost->host_lock);
882 ndlp->nlp_flag |= NLP_DELAY_TMO;
883 spin_unlock_irq(shost->host_lock);
884 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
885 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
886 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
887
888 return ndlp->nlp_state;
889 }
890
891 static uint32_t
892 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
893 struct lpfc_nodelist *ndlp,
894 void *arg,
895 uint32_t evt)
896 {
897 struct lpfc_hba *phba = vport->phba;
898 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
899 struct lpfc_iocbq *cmdiocb, *rspiocb;
900 struct lpfc_dmabuf *pcmd, *prsp, *mp;
901 uint32_t *lp;
902 IOCB_t *irsp;
903 struct serv_parm *sp;
904 LPFC_MBOXQ_t *mbox;
905
906 cmdiocb = (struct lpfc_iocbq *) arg;
907 rspiocb = cmdiocb->context_un.rsp_iocb;
908
909 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
910 /* Recovery from PLOGI collision logic */
911 return ndlp->nlp_state;
912 }
913
914 irsp = &rspiocb->iocb;
915
916 if (irsp->ulpStatus)
917 goto out;
918
919 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
920
921 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
922
923 lp = (uint32_t *) prsp->virt;
924 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
925
926 /* Some switches have FDMI servers returning 0 for WWN */
927 if ((ndlp->nlp_DID != FDMI_DID) &&
928 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
929 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
930 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
931 "0142 PLOGI RSP: Invalid WWN.\n");
932 goto out;
933 }
934 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
935 goto out;
936 /* PLOGI chkparm OK */
937 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
938 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
939 ndlp->nlp_DID, ndlp->nlp_state,
940 ndlp->nlp_flag, ndlp->nlp_rpi);
941 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
942 ndlp->nlp_fcp_info |= CLASS2;
943 else
944 ndlp->nlp_fcp_info |= CLASS3;
945
946 ndlp->nlp_class_sup = 0;
947 if (sp->cls1.classValid)
948 ndlp->nlp_class_sup |= FC_COS_CLASS1;
949 if (sp->cls2.classValid)
950 ndlp->nlp_class_sup |= FC_COS_CLASS2;
951 if (sp->cls3.classValid)
952 ndlp->nlp_class_sup |= FC_COS_CLASS3;
953 if (sp->cls4.classValid)
954 ndlp->nlp_class_sup |= FC_COS_CLASS4;
955 ndlp->nlp_maxframe =
956 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
957
958 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
959 if (!mbox) {
960 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
961 "0133 PLOGI: no memory for reg_login "
962 "Data: x%x x%x x%x x%x\n",
963 ndlp->nlp_DID, ndlp->nlp_state,
964 ndlp->nlp_flag, ndlp->nlp_rpi);
965 goto out;
966 }
967
968 lpfc_unreg_rpi(vport, ndlp);
969
970 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
971 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
972 switch (ndlp->nlp_DID) {
973 case NameServer_DID:
974 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
975 break;
976 case FDMI_DID:
977 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
978 break;
979 default:
980 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
981 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
982 }
983 mbox->context2 = lpfc_nlp_get(ndlp);
984 mbox->vport = vport;
985 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
986 != MBX_NOT_FINISHED) {
987 lpfc_nlp_set_state(vport, ndlp,
988 NLP_STE_REG_LOGIN_ISSUE);
989 return ndlp->nlp_state;
990 }
991 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
992 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
993 /* decrement node reference count to the failed mbox
994 * command
995 */
996 lpfc_nlp_put(ndlp);
997 mp = (struct lpfc_dmabuf *) mbox->context1;
998 lpfc_mbuf_free(phba, mp->virt, mp->phys);
999 kfree(mp);
1000 mempool_free(mbox, phba->mbox_mem_pool);
1001
1002 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1003 "0134 PLOGI: cannot issue reg_login "
1004 "Data: x%x x%x x%x x%x\n",
1005 ndlp->nlp_DID, ndlp->nlp_state,
1006 ndlp->nlp_flag, ndlp->nlp_rpi);
1007 } else {
1008 mempool_free(mbox, phba->mbox_mem_pool);
1009
1010 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1011 "0135 PLOGI: cannot format reg_login "
1012 "Data: x%x x%x x%x x%x\n",
1013 ndlp->nlp_DID, ndlp->nlp_state,
1014 ndlp->nlp_flag, ndlp->nlp_rpi);
1015 }
1016
1017
1018 out:
1019 if (ndlp->nlp_DID == NameServer_DID) {
1020 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1021 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1022 "0261 Cannot Register NameServer login\n");
1023 }
1024
1025 spin_lock_irq(shost->host_lock);
1026 ndlp->nlp_flag |= NLP_DEFER_RM;
1027 spin_unlock_irq(shost->host_lock);
1028 return NLP_STE_FREED_NODE;
1029 }
1030
1031 static uint32_t
1032 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1033 void *arg, uint32_t evt)
1034 {
1035 return ndlp->nlp_state;
1036 }
1037
1038 static uint32_t
1039 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1040 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1041 {
1042 struct lpfc_hba *phba;
1043 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1044 MAILBOX_t *mb = &pmb->u.mb;
1045 uint16_t rpi;
1046
1047 phba = vport->phba;
1048 /* Release the RPI */
1049 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1050 !mb->mbxStatus) {
1051 rpi = pmb->u.mb.un.varWords[0];
1052 lpfc_release_rpi(phba, vport, rpi);
1053 }
1054 return ndlp->nlp_state;
1055 }
1056
1057 static uint32_t
1058 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1059 void *arg, uint32_t evt)
1060 {
1061 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1062
1063 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1064 spin_lock_irq(shost->host_lock);
1065 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1066 spin_unlock_irq(shost->host_lock);
1067 return ndlp->nlp_state;
1068 } else {
1069 /* software abort outstanding PLOGI */
1070 lpfc_els_abort(vport->phba, ndlp);
1071
1072 lpfc_drop_node(vport, ndlp);
1073 return NLP_STE_FREED_NODE;
1074 }
1075 }
1076
1077 static uint32_t
1078 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1079 struct lpfc_nodelist *ndlp,
1080 void *arg,
1081 uint32_t evt)
1082 {
1083 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1084 struct lpfc_hba *phba = vport->phba;
1085
1086 /* Don't do anything that will mess up processing of the
1087 * previous RSCN.
1088 */
1089 if (vport->fc_flag & FC_RSCN_DEFERRED)
1090 return ndlp->nlp_state;
1091
1092 /* software abort outstanding PLOGI */
1093 lpfc_els_abort(phba, ndlp);
1094
1095 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1096 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1097 spin_lock_irq(shost->host_lock);
1098 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1099 spin_unlock_irq(shost->host_lock);
1100
1101 return ndlp->nlp_state;
1102 }
1103
1104 static uint32_t
1105 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1106 void *arg, uint32_t evt)
1107 {
1108 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1109 struct lpfc_hba *phba = vport->phba;
1110 struct lpfc_iocbq *cmdiocb;
1111
1112 /* software abort outstanding ADISC */
1113 lpfc_els_abort(phba, ndlp);
1114
1115 cmdiocb = (struct lpfc_iocbq *) arg;
1116
1117 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1118 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1119 spin_lock_irq(shost->host_lock);
1120 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1121 spin_unlock_irq(shost->host_lock);
1122 if (vport->num_disc_nodes)
1123 lpfc_more_adisc(vport);
1124 }
1125 return ndlp->nlp_state;
1126 }
1127 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1128 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1129 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1130
1131 return ndlp->nlp_state;
1132 }
1133
1134 static uint32_t
1135 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1136 void *arg, uint32_t evt)
1137 {
1138 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1139
1140 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1141 return ndlp->nlp_state;
1142 }
1143
1144 static uint32_t
1145 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1146 void *arg, uint32_t evt)
1147 {
1148 struct lpfc_hba *phba = vport->phba;
1149 struct lpfc_iocbq *cmdiocb;
1150
1151 cmdiocb = (struct lpfc_iocbq *) arg;
1152
1153 /* software abort outstanding ADISC */
1154 lpfc_els_abort(phba, ndlp);
1155
1156 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1157 return ndlp->nlp_state;
1158 }
1159
1160 static uint32_t
1161 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1162 struct lpfc_nodelist *ndlp,
1163 void *arg, uint32_t evt)
1164 {
1165 struct lpfc_iocbq *cmdiocb;
1166
1167 cmdiocb = (struct lpfc_iocbq *) arg;
1168
1169 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1170 return ndlp->nlp_state;
1171 }
1172
1173 static uint32_t
1174 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1175 void *arg, uint32_t evt)
1176 {
1177 struct lpfc_iocbq *cmdiocb;
1178
1179 cmdiocb = (struct lpfc_iocbq *) arg;
1180
1181 /* Treat like rcv logo */
1182 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1183 return ndlp->nlp_state;
1184 }
1185
1186 static uint32_t
1187 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1188 struct lpfc_nodelist *ndlp,
1189 void *arg, uint32_t evt)
1190 {
1191 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1192 struct lpfc_hba *phba = vport->phba;
1193 struct lpfc_iocbq *cmdiocb, *rspiocb;
1194 IOCB_t *irsp;
1195 ADISC *ap;
1196 int rc;
1197
1198 cmdiocb = (struct lpfc_iocbq *) arg;
1199 rspiocb = cmdiocb->context_un.rsp_iocb;
1200
1201 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1202 irsp = &rspiocb->iocb;
1203
1204 if ((irsp->ulpStatus) ||
1205 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1206 /* 1 sec timeout */
1207 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1208 spin_lock_irq(shost->host_lock);
1209 ndlp->nlp_flag |= NLP_DELAY_TMO;
1210 spin_unlock_irq(shost->host_lock);
1211 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1212
1213 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1214 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1215
1216 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1217 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1218 lpfc_unreg_rpi(vport, ndlp);
1219 return ndlp->nlp_state;
1220 }
1221
1222 if (phba->sli_rev == LPFC_SLI_REV4) {
1223 rc = lpfc_sli4_resume_rpi(ndlp);
1224 if (rc) {
1225 /* Stay in state and retry. */
1226 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1227 return ndlp->nlp_state;
1228 }
1229 }
1230
1231 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1232 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1233 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1234 } else {
1235 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1236 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1237 }
1238
1239 return ndlp->nlp_state;
1240 }
1241
1242 static uint32_t
1243 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1244 void *arg, uint32_t evt)
1245 {
1246 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1247
1248 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1249 spin_lock_irq(shost->host_lock);
1250 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1251 spin_unlock_irq(shost->host_lock);
1252 return ndlp->nlp_state;
1253 } else {
1254 /* software abort outstanding ADISC */
1255 lpfc_els_abort(vport->phba, ndlp);
1256
1257 lpfc_drop_node(vport, ndlp);
1258 return NLP_STE_FREED_NODE;
1259 }
1260 }
1261
1262 static uint32_t
1263 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1264 struct lpfc_nodelist *ndlp,
1265 void *arg,
1266 uint32_t evt)
1267 {
1268 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1269 struct lpfc_hba *phba = vport->phba;
1270
1271 /* Don't do anything that will mess up processing of the
1272 * previous RSCN.
1273 */
1274 if (vport->fc_flag & FC_RSCN_DEFERRED)
1275 return ndlp->nlp_state;
1276
1277 /* software abort outstanding ADISC */
1278 lpfc_els_abort(phba, ndlp);
1279
1280 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1281 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1282 spin_lock_irq(shost->host_lock);
1283 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1284 spin_unlock_irq(shost->host_lock);
1285 lpfc_disc_set_adisc(vport, ndlp);
1286 return ndlp->nlp_state;
1287 }
1288
1289 static uint32_t
1290 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1291 struct lpfc_nodelist *ndlp,
1292 void *arg,
1293 uint32_t evt)
1294 {
1295 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1296
1297 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1298 return ndlp->nlp_state;
1299 }
1300
1301 static uint32_t
1302 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1303 struct lpfc_nodelist *ndlp,
1304 void *arg,
1305 uint32_t evt)
1306 {
1307 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1308
1309 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1310 return ndlp->nlp_state;
1311 }
1312
1313 static uint32_t
1314 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1315 struct lpfc_nodelist *ndlp,
1316 void *arg,
1317 uint32_t evt)
1318 {
1319 struct lpfc_hba *phba = vport->phba;
1320 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1321 LPFC_MBOXQ_t *mb;
1322 LPFC_MBOXQ_t *nextmb;
1323 struct lpfc_dmabuf *mp;
1324
1325 cmdiocb = (struct lpfc_iocbq *) arg;
1326
1327 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1328 if ((mb = phba->sli.mbox_active)) {
1329 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1330 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1331 lpfc_nlp_put(ndlp);
1332 mb->context2 = NULL;
1333 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1334 }
1335 }
1336
1337 spin_lock_irq(&phba->hbalock);
1338 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1339 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1340 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1341 mp = (struct lpfc_dmabuf *) (mb->context1);
1342 if (mp) {
1343 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1344 kfree(mp);
1345 }
1346 lpfc_nlp_put(ndlp);
1347 list_del(&mb->list);
1348 phba->sli.mboxq_cnt--;
1349 mempool_free(mb, phba->mbox_mem_pool);
1350 }
1351 }
1352 spin_unlock_irq(&phba->hbalock);
1353
1354 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1355 return ndlp->nlp_state;
1356 }
1357
1358 static uint32_t
1359 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1360 struct lpfc_nodelist *ndlp,
1361 void *arg,
1362 uint32_t evt)
1363 {
1364 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1365
1366 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1367 return ndlp->nlp_state;
1368 }
1369
1370 static uint32_t
1371 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1372 struct lpfc_nodelist *ndlp,
1373 void *arg,
1374 uint32_t evt)
1375 {
1376 struct lpfc_iocbq *cmdiocb;
1377
1378 cmdiocb = (struct lpfc_iocbq *) arg;
1379 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1380 return ndlp->nlp_state;
1381 }
1382
1383 static uint32_t
1384 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1385 struct lpfc_nodelist *ndlp,
1386 void *arg,
1387 uint32_t evt)
1388 {
1389 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1390 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1391 MAILBOX_t *mb = &pmb->u.mb;
1392 uint32_t did = mb->un.varWords[1];
1393
1394 if (mb->mbxStatus) {
1395 /* RegLogin failed */
1396 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1397 "0246 RegLogin failed Data: x%x x%x x%x\n",
1398 did, mb->mbxStatus, vport->port_state);
1399 /*
1400 * If RegLogin failed due to lack of HBA resources do not
1401 * retry discovery.
1402 */
1403 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1404 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1405 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1406 return ndlp->nlp_state;
1407 }
1408
1409 /* Put ndlp in npr state set plogi timer for 1 sec */
1410 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1411 spin_lock_irq(shost->host_lock);
1412 ndlp->nlp_flag |= NLP_DELAY_TMO;
1413 spin_unlock_irq(shost->host_lock);
1414 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1415
1416 lpfc_issue_els_logo(vport, ndlp, 0);
1417 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1418 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1419 return ndlp->nlp_state;
1420 }
1421
1422 ndlp->nlp_rpi = mb->un.varWords[0];
1423 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1424
1425 /* Only if we are not a fabric nport do we issue PRLI */
1426 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1427 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1428 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1429 lpfc_issue_els_prli(vport, ndlp, 0);
1430 } else {
1431 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1432 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1433 }
1434 return ndlp->nlp_state;
1435 }
1436
1437 static uint32_t
1438 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1439 struct lpfc_nodelist *ndlp,
1440 void *arg,
1441 uint32_t evt)
1442 {
1443 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1444
1445 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1446 spin_lock_irq(shost->host_lock);
1447 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1448 spin_unlock_irq(shost->host_lock);
1449 return ndlp->nlp_state;
1450 } else {
1451 lpfc_drop_node(vport, ndlp);
1452 return NLP_STE_FREED_NODE;
1453 }
1454 }
1455
1456 static uint32_t
1457 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1458 struct lpfc_nodelist *ndlp,
1459 void *arg,
1460 uint32_t evt)
1461 {
1462 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1463
1464 /* Don't do anything that will mess up processing of the
1465 * previous RSCN.
1466 */
1467 if (vport->fc_flag & FC_RSCN_DEFERRED)
1468 return ndlp->nlp_state;
1469
1470 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1471 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1472 spin_lock_irq(shost->host_lock);
1473 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1474 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1475 spin_unlock_irq(shost->host_lock);
1476 lpfc_disc_set_adisc(vport, ndlp);
1477 return ndlp->nlp_state;
1478 }
1479
1480 static uint32_t
1481 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1482 void *arg, uint32_t evt)
1483 {
1484 struct lpfc_iocbq *cmdiocb;
1485
1486 cmdiocb = (struct lpfc_iocbq *) arg;
1487
1488 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1489 return ndlp->nlp_state;
1490 }
1491
1492 static uint32_t
1493 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1494 void *arg, uint32_t evt)
1495 {
1496 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1497
1498 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1499 return ndlp->nlp_state;
1500 }
1501
1502 static uint32_t
1503 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1504 void *arg, uint32_t evt)
1505 {
1506 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1507
1508 /* Software abort outstanding PRLI before sending acc */
1509 lpfc_els_abort(vport->phba, ndlp);
1510
1511 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1512 return ndlp->nlp_state;
1513 }
1514
1515 static uint32_t
1516 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1517 void *arg, uint32_t evt)
1518 {
1519 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1520
1521 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1522 return ndlp->nlp_state;
1523 }
1524
1525 /* This routine is envoked when we rcv a PRLO request from a nport
1526 * we are logged into. We should send back a PRLO rsp setting the
1527 * appropriate bits.
1528 * NEXT STATE = PRLI_ISSUE
1529 */
1530 static uint32_t
1531 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1532 void *arg, uint32_t evt)
1533 {
1534 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1535
1536 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1537 return ndlp->nlp_state;
1538 }
1539
1540 static uint32_t
1541 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1542 void *arg, uint32_t evt)
1543 {
1544 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1545 struct lpfc_iocbq *cmdiocb, *rspiocb;
1546 struct lpfc_hba *phba = vport->phba;
1547 IOCB_t *irsp;
1548 PRLI *npr;
1549
1550 cmdiocb = (struct lpfc_iocbq *) arg;
1551 rspiocb = cmdiocb->context_un.rsp_iocb;
1552 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1553
1554 irsp = &rspiocb->iocb;
1555 if (irsp->ulpStatus) {
1556 if ((vport->port_type == LPFC_NPIV_PORT) &&
1557 vport->cfg_restrict_login) {
1558 goto out;
1559 }
1560 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1561 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1562 return ndlp->nlp_state;
1563 }
1564
1565 /* Check out PRLI rsp */
1566 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1567 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1568 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1569 (npr->prliType == PRLI_FCP_TYPE)) {
1570 if (npr->initiatorFunc)
1571 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1572 if (npr->targetFunc)
1573 ndlp->nlp_type |= NLP_FCP_TARGET;
1574 if (npr->Retry)
1575 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1576 }
1577 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1578 (vport->port_type == LPFC_NPIV_PORT) &&
1579 vport->cfg_restrict_login) {
1580 out:
1581 spin_lock_irq(shost->host_lock);
1582 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1583 spin_unlock_irq(shost->host_lock);
1584 lpfc_issue_els_logo(vport, ndlp, 0);
1585
1586 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1587 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1588 return ndlp->nlp_state;
1589 }
1590
1591 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1592 if (ndlp->nlp_type & NLP_FCP_TARGET)
1593 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1594 else
1595 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1596 return ndlp->nlp_state;
1597 }
1598
1599 /*! lpfc_device_rm_prli_issue
1600 *
1601 * \pre
1602 * \post
1603 * \param phba
1604 * \param ndlp
1605 * \param arg
1606 * \param evt
1607 * \return uint32_t
1608 *
1609 * \b Description:
1610 * This routine is envoked when we a request to remove a nport we are in the
1611 * process of PRLIing. We should software abort outstanding prli, unreg
1612 * login, send a logout. We will change node state to UNUSED_NODE, put it
1613 * on plogi list so it can be freed when LOGO completes.
1614 *
1615 */
1616
1617 static uint32_t
1618 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1619 void *arg, uint32_t evt)
1620 {
1621 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1622
1623 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1624 spin_lock_irq(shost->host_lock);
1625 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1626 spin_unlock_irq(shost->host_lock);
1627 return ndlp->nlp_state;
1628 } else {
1629 /* software abort outstanding PLOGI */
1630 lpfc_els_abort(vport->phba, ndlp);
1631
1632 lpfc_drop_node(vport, ndlp);
1633 return NLP_STE_FREED_NODE;
1634 }
1635 }
1636
1637
1638 /*! lpfc_device_recov_prli_issue
1639 *
1640 * \pre
1641 * \post
1642 * \param phba
1643 * \param ndlp
1644 * \param arg
1645 * \param evt
1646 * \return uint32_t
1647 *
1648 * \b Description:
1649 * The routine is envoked when the state of a device is unknown, like
1650 * during a link down. We should remove the nodelist entry from the
1651 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1652 * outstanding PRLI command, then free the node entry.
1653 */
1654 static uint32_t
1655 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1656 struct lpfc_nodelist *ndlp,
1657 void *arg,
1658 uint32_t evt)
1659 {
1660 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1661 struct lpfc_hba *phba = vport->phba;
1662
1663 /* Don't do anything that will mess up processing of the
1664 * previous RSCN.
1665 */
1666 if (vport->fc_flag & FC_RSCN_DEFERRED)
1667 return ndlp->nlp_state;
1668
1669 /* software abort outstanding PRLI */
1670 lpfc_els_abort(phba, ndlp);
1671
1672 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1673 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1674 spin_lock_irq(shost->host_lock);
1675 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1676 spin_unlock_irq(shost->host_lock);
1677 lpfc_disc_set_adisc(vport, ndlp);
1678 return ndlp->nlp_state;
1679 }
1680
1681 static uint32_t
1682 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1683 void *arg, uint32_t evt)
1684 {
1685 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1686
1687 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1688 return ndlp->nlp_state;
1689 }
1690
1691 static uint32_t
1692 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1693 void *arg, uint32_t evt)
1694 {
1695 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1696
1697 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1698 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1699 return ndlp->nlp_state;
1700 }
1701
1702 static uint32_t
1703 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1704 void *arg, uint32_t evt)
1705 {
1706 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1707
1708 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1709 return ndlp->nlp_state;
1710 }
1711
1712 static uint32_t
1713 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1714 void *arg, uint32_t evt)
1715 {
1716 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1717
1718 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1719 return ndlp->nlp_state;
1720 }
1721
1722 static uint32_t
1723 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1724 void *arg, uint32_t evt)
1725 {
1726 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1727
1728 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1729 return ndlp->nlp_state;
1730 }
1731
1732 static uint32_t
1733 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1734 struct lpfc_nodelist *ndlp,
1735 void *arg,
1736 uint32_t evt)
1737 {
1738 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1739
1740 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1741 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1742 spin_lock_irq(shost->host_lock);
1743 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1744 spin_unlock_irq(shost->host_lock);
1745 lpfc_disc_set_adisc(vport, ndlp);
1746
1747 return ndlp->nlp_state;
1748 }
1749
1750 static uint32_t
1751 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1752 void *arg, uint32_t evt)
1753 {
1754 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1755
1756 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1757 return ndlp->nlp_state;
1758 }
1759
1760 static uint32_t
1761 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1762 void *arg, uint32_t evt)
1763 {
1764 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1765
1766 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1767 return ndlp->nlp_state;
1768 }
1769
1770 static uint32_t
1771 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1772 void *arg, uint32_t evt)
1773 {
1774 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1775
1776 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1777 return ndlp->nlp_state;
1778 }
1779
1780 static uint32_t
1781 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1782 struct lpfc_nodelist *ndlp,
1783 void *arg, uint32_t evt)
1784 {
1785 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1786
1787 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1788 return ndlp->nlp_state;
1789 }
1790
1791 static uint32_t
1792 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1793 void *arg, uint32_t evt)
1794 {
1795 struct lpfc_hba *phba = vport->phba;
1796 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1797
1798 /* flush the target */
1799 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1800 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1801
1802 /* Treat like rcv logo */
1803 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1804 return ndlp->nlp_state;
1805 }
1806
1807 static uint32_t
1808 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1809 struct lpfc_nodelist *ndlp,
1810 void *arg,
1811 uint32_t evt)
1812 {
1813 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1814
1815 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1816 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1817 spin_lock_irq(shost->host_lock);
1818 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1819 spin_unlock_irq(shost->host_lock);
1820 lpfc_disc_set_adisc(vport, ndlp);
1821 return ndlp->nlp_state;
1822 }
1823
1824 static uint32_t
1825 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1826 void *arg, uint32_t evt)
1827 {
1828 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1829 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1830
1831 /* Ignore PLOGI if we have an outstanding LOGO */
1832 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1833 return ndlp->nlp_state;
1834 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1835 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1836 spin_lock_irq(shost->host_lock);
1837 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1838 spin_unlock_irq(shost->host_lock);
1839 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1840 /* send PLOGI immediately, move to PLOGI issue state */
1841 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1842 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1843 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1844 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1845 }
1846 }
1847 return ndlp->nlp_state;
1848 }
1849
1850 static uint32_t
1851 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1852 void *arg, uint32_t evt)
1853 {
1854 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1855 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1856 struct ls_rjt stat;
1857
1858 memset(&stat, 0, sizeof (struct ls_rjt));
1859 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1860 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1861 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1862
1863 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1864 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1865 spin_lock_irq(shost->host_lock);
1866 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1867 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1868 spin_unlock_irq(shost->host_lock);
1869 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1870 lpfc_issue_els_adisc(vport, ndlp, 0);
1871 } else {
1872 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1873 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1874 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1875 }
1876 }
1877 return ndlp->nlp_state;
1878 }
1879
1880 static uint32_t
1881 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1882 void *arg, uint32_t evt)
1883 {
1884 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1885
1886 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1887 return ndlp->nlp_state;
1888 }
1889
1890 static uint32_t
1891 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1892 void *arg, uint32_t evt)
1893 {
1894 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1895
1896 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1897 /*
1898 * Do not start discovery if discovery is about to start
1899 * or discovery in progress for this node. Starting discovery
1900 * here will affect the counting of discovery threads.
1901 */
1902 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1903 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1904 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1905 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1906 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1907 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1908 lpfc_issue_els_adisc(vport, ndlp, 0);
1909 } else {
1910 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1911 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1912 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1913 }
1914 }
1915 return ndlp->nlp_state;
1916 }
1917
1918 static uint32_t
1919 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1920 void *arg, uint32_t evt)
1921 {
1922 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1923 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1924
1925 spin_lock_irq(shost->host_lock);
1926 ndlp->nlp_flag |= NLP_LOGO_ACC;
1927 spin_unlock_irq(shost->host_lock);
1928
1929 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1930
1931 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1932 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1933 spin_lock_irq(shost->host_lock);
1934 ndlp->nlp_flag |= NLP_DELAY_TMO;
1935 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1936 spin_unlock_irq(shost->host_lock);
1937 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1938 } else {
1939 spin_lock_irq(shost->host_lock);
1940 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1941 spin_unlock_irq(shost->host_lock);
1942 }
1943 return ndlp->nlp_state;
1944 }
1945
1946 static uint32_t
1947 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1948 void *arg, uint32_t evt)
1949 {
1950 struct lpfc_iocbq *cmdiocb, *rspiocb;
1951 IOCB_t *irsp;
1952
1953 cmdiocb = (struct lpfc_iocbq *) arg;
1954 rspiocb = cmdiocb->context_un.rsp_iocb;
1955
1956 irsp = &rspiocb->iocb;
1957 if (irsp->ulpStatus) {
1958 ndlp->nlp_flag |= NLP_DEFER_RM;
1959 return NLP_STE_FREED_NODE;
1960 }
1961 return ndlp->nlp_state;
1962 }
1963
1964 static uint32_t
1965 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1966 void *arg, uint32_t evt)
1967 {
1968 struct lpfc_iocbq *cmdiocb, *rspiocb;
1969 IOCB_t *irsp;
1970
1971 cmdiocb = (struct lpfc_iocbq *) arg;
1972 rspiocb = cmdiocb->context_un.rsp_iocb;
1973
1974 irsp = &rspiocb->iocb;
1975 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1976 lpfc_drop_node(vport, ndlp);
1977 return NLP_STE_FREED_NODE;
1978 }
1979 return ndlp->nlp_state;
1980 }
1981
1982 static uint32_t
1983 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1984 void *arg, uint32_t evt)
1985 {
1986 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1987 if (ndlp->nlp_DID == Fabric_DID) {
1988 spin_lock_irq(shost->host_lock);
1989 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1990 spin_unlock_irq(shost->host_lock);
1991 }
1992 lpfc_unreg_rpi(vport, ndlp);
1993 return ndlp->nlp_state;
1994 }
1995
1996 static uint32_t
1997 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1998 void *arg, uint32_t evt)
1999 {
2000 struct lpfc_iocbq *cmdiocb, *rspiocb;
2001 IOCB_t *irsp;
2002
2003 cmdiocb = (struct lpfc_iocbq *) arg;
2004 rspiocb = cmdiocb->context_un.rsp_iocb;
2005
2006 irsp = &rspiocb->iocb;
2007 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2008 lpfc_drop_node(vport, ndlp);
2009 return NLP_STE_FREED_NODE;
2010 }
2011 return ndlp->nlp_state;
2012 }
2013
2014 static uint32_t
2015 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2016 struct lpfc_nodelist *ndlp,
2017 void *arg, uint32_t evt)
2018 {
2019 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2020 MAILBOX_t *mb = &pmb->u.mb;
2021
2022 if (!mb->mbxStatus) {
2023 ndlp->nlp_rpi = mb->un.varWords[0];
2024 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2025 } else {
2026 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2027 lpfc_drop_node(vport, ndlp);
2028 return NLP_STE_FREED_NODE;
2029 }
2030 }
2031 return ndlp->nlp_state;
2032 }
2033
2034 static uint32_t
2035 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2036 void *arg, uint32_t evt)
2037 {
2038 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2039
2040 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2041 spin_lock_irq(shost->host_lock);
2042 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2043 spin_unlock_irq(shost->host_lock);
2044 return ndlp->nlp_state;
2045 }
2046 lpfc_drop_node(vport, ndlp);
2047 return NLP_STE_FREED_NODE;
2048 }
2049
2050 static uint32_t
2051 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2052 void *arg, uint32_t evt)
2053 {
2054 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2055
2056 /* Don't do anything that will mess up processing of the
2057 * previous RSCN.
2058 */
2059 if (vport->fc_flag & FC_RSCN_DEFERRED)
2060 return ndlp->nlp_state;
2061
2062 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2063 spin_lock_irq(shost->host_lock);
2064 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2065 spin_unlock_irq(shost->host_lock);
2066 return ndlp->nlp_state;
2067 }
2068
2069
2070 /* This next section defines the NPort Discovery State Machine */
2071
2072 /* There are 4 different double linked lists nodelist entries can reside on.
2073 * The plogi list and adisc list are used when Link Up discovery or RSCN
2074 * processing is needed. Each list holds the nodes that we will send PLOGI
2075 * or ADISC on. These lists will keep track of what nodes will be effected
2076 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2077 * The unmapped_list will contain all nodes that we have successfully logged
2078 * into at the Fibre Channel level. The mapped_list will contain all nodes
2079 * that are mapped FCP targets.
2080 */
2081 /*
2082 * The bind list is a list of undiscovered (potentially non-existent) nodes
2083 * that we have saved binding information on. This information is used when
2084 * nodes transition from the unmapped to the mapped list.
2085 */
2086 /* For UNUSED_NODE state, the node has just been allocated .
2087 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2088 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2089 * and put on the unmapped list. For ADISC processing, the node is taken off
2090 * the ADISC list and placed on either the mapped or unmapped list (depending
2091 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2092 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2093 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2094 * node, the node is taken off the unmapped list. The binding list is checked
2095 * for a valid binding, or a binding is automatically assigned. If binding
2096 * assignment is unsuccessful, the node is left on the unmapped list. If
2097 * binding assignment is successful, the associated binding list entry (if
2098 * any) is removed, and the node is placed on the mapped list.
2099 */
2100 /*
2101 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2102 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2103 * expire, all effected nodes will receive a DEVICE_RM event.
2104 */
2105 /*
2106 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2107 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2108 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2109 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2110 * we will first process the ADISC list. 32 entries are processed initially and
2111 * ADISC is initited for each one. Completions / Events for each node are
2112 * funnelled thru the state machine. As each node finishes ADISC processing, it
2113 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2114 * waiting, and the ADISC list count is identically 0, then we are done. For
2115 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2116 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2117 * list. 32 entries are processed initially and PLOGI is initited for each one.
2118 * Completions / Events for each node are funnelled thru the state machine. As
2119 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2120 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2121 * indentically 0, then we are done. We have now completed discovery / RSCN
2122 * handling. Upon completion, ALL nodes should be on either the mapped or
2123 * unmapped lists.
2124 */
2125
2126 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2127 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2128 /* Action routine Event Current State */
2129 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2130 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2131 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2132 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2133 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2134 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2135 lpfc_disc_illegal, /* CMPL_PLOGI */
2136 lpfc_disc_illegal, /* CMPL_PRLI */
2137 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2138 lpfc_disc_illegal, /* CMPL_ADISC */
2139 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2140 lpfc_device_rm_unused_node, /* DEVICE_RM */
2141 lpfc_disc_illegal, /* DEVICE_RECOVERY */
2142
2143 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2144 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2145 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2146 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2147 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2148 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2149 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2150 lpfc_disc_illegal, /* CMPL_PRLI */
2151 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2152 lpfc_disc_illegal, /* CMPL_ADISC */
2153 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2154 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2155 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2156
2157 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2158 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2159 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2160 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2161 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2162 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2163 lpfc_disc_illegal, /* CMPL_PLOGI */
2164 lpfc_disc_illegal, /* CMPL_PRLI */
2165 lpfc_disc_illegal, /* CMPL_LOGO */
2166 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2167 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2168 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2169 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2170
2171 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2172 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2173 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2174 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2175 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2176 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2177 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2178 lpfc_disc_illegal, /* CMPL_PRLI */
2179 lpfc_disc_illegal, /* CMPL_LOGO */
2180 lpfc_disc_illegal, /* CMPL_ADISC */
2181 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2182 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2183 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2184
2185 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2186 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2187 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2188 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2189 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2190 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2191 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2192 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2193 lpfc_disc_illegal, /* CMPL_LOGO */
2194 lpfc_disc_illegal, /* CMPL_ADISC */
2195 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2196 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2197 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2198
2199 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2200 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2201 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2202 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2203 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2204 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2205 lpfc_disc_illegal, /* CMPL_PLOGI */
2206 lpfc_disc_illegal, /* CMPL_PRLI */
2207 lpfc_disc_illegal, /* CMPL_LOGO */
2208 lpfc_disc_illegal, /* CMPL_ADISC */
2209 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2210 lpfc_disc_illegal, /* DEVICE_RM */
2211 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2212
2213 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2214 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2215 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2216 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2217 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2218 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2219 lpfc_disc_illegal, /* CMPL_PLOGI */
2220 lpfc_disc_illegal, /* CMPL_PRLI */
2221 lpfc_disc_illegal, /* CMPL_LOGO */
2222 lpfc_disc_illegal, /* CMPL_ADISC */
2223 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2224 lpfc_disc_illegal, /* DEVICE_RM */
2225 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2226
2227 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2228 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2229 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2230 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2231 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2232 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2233 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2234 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2235 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2236 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2237 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2238 lpfc_device_rm_npr_node, /* DEVICE_RM */
2239 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2240 };
2241
2242 int
2243 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2244 void *arg, uint32_t evt)
2245 {
2246 uint32_t cur_state, rc;
2247 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2248 uint32_t);
2249 uint32_t got_ndlp = 0;
2250
2251 if (lpfc_nlp_get(ndlp))
2252 got_ndlp = 1;
2253
2254 cur_state = ndlp->nlp_state;
2255
2256 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2257 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2258 "0211 DSM in event x%x on NPort x%x in "
2259 "state %d Data: x%x\n",
2260 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2261
2262 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2263 "DSM in: evt:%d ste:%d did:x%x",
2264 evt, cur_state, ndlp->nlp_DID);
2265
2266 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2267 rc = (func) (vport, ndlp, arg, evt);
2268
2269 /* DSM out state <rc> on NPort <nlp_DID> */
2270 if (got_ndlp) {
2271 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2272 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2273 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2274
2275 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2276 "DSM out: ste:%d did:x%x flg:x%x",
2277 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2278 /* Decrement the ndlp reference count held for this function */
2279 lpfc_nlp_put(ndlp);
2280 } else {
2281 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2282 "0213 DSM out state %d on NPort free\n", rc);
2283
2284 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2285 "DSM out: ste:%d did:x%x flg:x%x",
2286 rc, 0, 0);
2287 }
2288
2289 return rc;
2290 }