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Merge tag 'v3.3.7' into 3.3/master
[zen-stable.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blobe8bb0055994316a790db82111163295efa5ba7be
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 /**
657 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
658 * @phba : Pointer to lpfc_hba structure.
659 * @vport: Pointer to lpfc_vport structure.
660 * @rpi : rpi to be release.
661 *
662 * This function will send a unreg_login mailbox command to the firmware
663 * to release a rpi.
664 **/
665 void
666 lpfc_release_rpi(struct lpfc_hba *phba,
667 struct lpfc_vport *vport,
668 uint16_t rpi)
669 {
670 LPFC_MBOXQ_t *pmb;
671 int rc;
672
673 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
674 GFP_KERNEL);
675 if (!pmb)
676 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
677 "2796 mailbox memory allocation failed \n");
678 else {
679 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
680 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
681 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
682 if (rc == MBX_NOT_FINISHED)
683 mempool_free(pmb, phba->mbox_mem_pool);
684 }
685 }
686
687 static uint32_t
688 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
689 void *arg, uint32_t evt)
690 {
691 struct lpfc_hba *phba;
692 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
693 MAILBOX_t *mb;
694 uint16_t rpi;
695
696 phba = vport->phba;
697 /* Release the RPI if reglogin completing */
698 if (!(phba->pport->load_flag & FC_UNLOADING) &&
699 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
700 (!pmb->u.mb.mbxStatus)) {
701 mb = &pmb->u.mb;
702 rpi = pmb->u.mb.un.varWords[0];
703 lpfc_release_rpi(phba, vport, rpi);
704 }
705 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
706 "0271 Illegal State Transition: node x%x "
707 "event x%x, state x%x Data: x%x x%x\n",
708 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
709 ndlp->nlp_flag);
710 return ndlp->nlp_state;
711 }
712
713 static uint32_t
714 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
715 void *arg, uint32_t evt)
716 {
717 /* This transition is only legal if we previously
718 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
719 * working on the same NPortID, do nothing for this thread
720 * to stop it.
721 */
722 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
723 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
724 "0272 Illegal State Transition: node x%x "
725 "event x%x, state x%x Data: x%x x%x\n",
726 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
727 ndlp->nlp_flag);
728 }
729 return ndlp->nlp_state;
730 }
731
732 /* Start of Discovery State Machine routines */
733
734 static uint32_t
735 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
736 void *arg, uint32_t evt)
737 {
738 struct lpfc_iocbq *cmdiocb;
739
740 cmdiocb = (struct lpfc_iocbq *) arg;
741
742 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
743 return ndlp->nlp_state;
744 }
745 return NLP_STE_FREED_NODE;
746 }
747
748 static uint32_t
749 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
750 void *arg, uint32_t evt)
751 {
752 lpfc_issue_els_logo(vport, ndlp, 0);
753 return ndlp->nlp_state;
754 }
755
756 static uint32_t
757 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
758 void *arg, uint32_t evt)
759 {
760 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
761 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
762
763 spin_lock_irq(shost->host_lock);
764 ndlp->nlp_flag |= NLP_LOGO_ACC;
765 spin_unlock_irq(shost->host_lock);
766 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
767
768 return ndlp->nlp_state;
769 }
770
771 static uint32_t
772 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
773 void *arg, uint32_t evt)
774 {
775 return NLP_STE_FREED_NODE;
776 }
777
778 static uint32_t
779 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
780 void *arg, uint32_t evt)
781 {
782 return NLP_STE_FREED_NODE;
783 }
784
785 static uint32_t
786 lpfc_device_recov_unused_node(struct lpfc_vport *vport,
787 struct lpfc_nodelist *ndlp,
788 void *arg, uint32_t evt)
789 {
790 return ndlp->nlp_state;
791 }
792
793 static uint32_t
794 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
795 void *arg, uint32_t evt)
796 {
797 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
798 struct lpfc_hba *phba = vport->phba;
799 struct lpfc_iocbq *cmdiocb = arg;
800 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
801 uint32_t *lp = (uint32_t *) pcmd->virt;
802 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
803 struct ls_rjt stat;
804 int port_cmp;
805
806 memset(&stat, 0, sizeof (struct ls_rjt));
807
808 /* For a PLOGI, we only accept if our portname is less
809 * than the remote portname.
810 */
811 phba->fc_stat.elsLogiCol++;
812 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
813 sizeof(struct lpfc_name));
814
815 if (port_cmp >= 0) {
816 /* Reject this request because the remote node will accept
817 ours */
818 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
819 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
820 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
821 NULL);
822 } else {
823 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
824 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
825 (vport->num_disc_nodes)) {
826 spin_lock_irq(shost->host_lock);
827 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
828 spin_unlock_irq(shost->host_lock);
829 /* Check if there are more PLOGIs to be sent */
830 lpfc_more_plogi(vport);
831 if (vport->num_disc_nodes == 0) {
832 spin_lock_irq(shost->host_lock);
833 vport->fc_flag &= ~FC_NDISC_ACTIVE;
834 spin_unlock_irq(shost->host_lock);
835 lpfc_can_disctmo(vport);
836 lpfc_end_rscn(vport);
837 }
838 }
839 } /* If our portname was less */
840
841 return ndlp->nlp_state;
842 }
843
844 static uint32_t
845 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
846 void *arg, uint32_t evt)
847 {
848 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
849 struct ls_rjt stat;
850
851 memset(&stat, 0, sizeof (struct ls_rjt));
852 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
853 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
854 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
855 return ndlp->nlp_state;
856 }
857
858 static uint32_t
859 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
860 void *arg, uint32_t evt)
861 {
862 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
863
864 /* software abort outstanding PLOGI */
865 lpfc_els_abort(vport->phba, ndlp);
866
867 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
868 return ndlp->nlp_state;
869 }
870
871 static uint32_t
872 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
873 void *arg, uint32_t evt)
874 {
875 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
876 struct lpfc_hba *phba = vport->phba;
877 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
878
879 /* software abort outstanding PLOGI */
880 lpfc_els_abort(phba, ndlp);
881
882 if (evt == NLP_EVT_RCV_LOGO) {
883 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
884 } else {
885 lpfc_issue_els_logo(vport, ndlp, 0);
886 }
887
888 /* Put ndlp in npr state set plogi timer for 1 sec */
889 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
890 spin_lock_irq(shost->host_lock);
891 ndlp->nlp_flag |= NLP_DELAY_TMO;
892 spin_unlock_irq(shost->host_lock);
893 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
894 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
895 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
896
897 return ndlp->nlp_state;
898 }
899
900 static uint32_t
901 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
902 struct lpfc_nodelist *ndlp,
903 void *arg,
904 uint32_t evt)
905 {
906 struct lpfc_hba *phba = vport->phba;
907 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
908 struct lpfc_iocbq *cmdiocb, *rspiocb;
909 struct lpfc_dmabuf *pcmd, *prsp, *mp;
910 uint32_t *lp;
911 IOCB_t *irsp;
912 struct serv_parm *sp;
913 LPFC_MBOXQ_t *mbox;
914
915 cmdiocb = (struct lpfc_iocbq *) arg;
916 rspiocb = cmdiocb->context_un.rsp_iocb;
917
918 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
919 /* Recovery from PLOGI collision logic */
920 return ndlp->nlp_state;
921 }
922
923 irsp = &rspiocb->iocb;
924
925 if (irsp->ulpStatus)
926 goto out;
927
928 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
929
930 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
931
932 lp = (uint32_t *) prsp->virt;
933 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
934
935 /* Some switches have FDMI servers returning 0 for WWN */
936 if ((ndlp->nlp_DID != FDMI_DID) &&
937 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
938 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
939 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
940 "0142 PLOGI RSP: Invalid WWN.\n");
941 goto out;
942 }
943 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
944 goto out;
945 /* PLOGI chkparm OK */
946 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
947 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
948 ndlp->nlp_DID, ndlp->nlp_state,
949 ndlp->nlp_flag, ndlp->nlp_rpi);
950 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
951 ndlp->nlp_fcp_info |= CLASS2;
952 else
953 ndlp->nlp_fcp_info |= CLASS3;
954
955 ndlp->nlp_class_sup = 0;
956 if (sp->cls1.classValid)
957 ndlp->nlp_class_sup |= FC_COS_CLASS1;
958 if (sp->cls2.classValid)
959 ndlp->nlp_class_sup |= FC_COS_CLASS2;
960 if (sp->cls3.classValid)
961 ndlp->nlp_class_sup |= FC_COS_CLASS3;
962 if (sp->cls4.classValid)
963 ndlp->nlp_class_sup |= FC_COS_CLASS4;
964 ndlp->nlp_maxframe =
965 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
966
967 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
968 if (!mbox) {
969 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
970 "0133 PLOGI: no memory for reg_login "
971 "Data: x%x x%x x%x x%x\n",
972 ndlp->nlp_DID, ndlp->nlp_state,
973 ndlp->nlp_flag, ndlp->nlp_rpi);
974 goto out;
975 }
976
977 lpfc_unreg_rpi(vport, ndlp);
978
979 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
980 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
981 switch (ndlp->nlp_DID) {
982 case NameServer_DID:
983 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
984 break;
985 case FDMI_DID:
986 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
987 break;
988 default:
989 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
990 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
991 }
992 mbox->context2 = lpfc_nlp_get(ndlp);
993 mbox->vport = vport;
994 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
995 != MBX_NOT_FINISHED) {
996 lpfc_nlp_set_state(vport, ndlp,
997 NLP_STE_REG_LOGIN_ISSUE);
998 return ndlp->nlp_state;
999 }
1000 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1001 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
1002 /* decrement node reference count to the failed mbox
1003 * command
1004 */
1005 lpfc_nlp_put(ndlp);
1006 mp = (struct lpfc_dmabuf *) mbox->context1;
1007 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1008 kfree(mp);
1009 mempool_free(mbox, phba->mbox_mem_pool);
1010
1011 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1012 "0134 PLOGI: cannot issue reg_login "
1013 "Data: x%x x%x x%x x%x\n",
1014 ndlp->nlp_DID, ndlp->nlp_state,
1015 ndlp->nlp_flag, ndlp->nlp_rpi);
1016 } else {
1017 mempool_free(mbox, phba->mbox_mem_pool);
1018
1019 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1020 "0135 PLOGI: cannot format reg_login "
1021 "Data: x%x x%x x%x x%x\n",
1022 ndlp->nlp_DID, ndlp->nlp_state,
1023 ndlp->nlp_flag, ndlp->nlp_rpi);
1024 }
1025
1026
1027 out:
1028 if (ndlp->nlp_DID == NameServer_DID) {
1029 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1030 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1031 "0261 Cannot Register NameServer login\n");
1032 }
1033
1034 spin_lock_irq(shost->host_lock);
1035 ndlp->nlp_flag |= NLP_DEFER_RM;
1036 spin_unlock_irq(shost->host_lock);
1037 return NLP_STE_FREED_NODE;
1038 }
1039
1040 static uint32_t
1041 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1042 void *arg, uint32_t evt)
1043 {
1044 return ndlp->nlp_state;
1045 }
1046
1047 static uint32_t
1048 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1049 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1050 {
1051 struct lpfc_hba *phba;
1052 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1053 MAILBOX_t *mb = &pmb->u.mb;
1054 uint16_t rpi;
1055
1056 phba = vport->phba;
1057 /* Release the RPI */
1058 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1059 !mb->mbxStatus) {
1060 rpi = pmb->u.mb.un.varWords[0];
1061 lpfc_release_rpi(phba, vport, rpi);
1062 }
1063 return ndlp->nlp_state;
1064 }
1065
1066 static uint32_t
1067 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1068 void *arg, uint32_t evt)
1069 {
1070 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1071
1072 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1073 spin_lock_irq(shost->host_lock);
1074 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1075 spin_unlock_irq(shost->host_lock);
1076 return ndlp->nlp_state;
1077 } else {
1078 /* software abort outstanding PLOGI */
1079 lpfc_els_abort(vport->phba, ndlp);
1080
1081 lpfc_drop_node(vport, ndlp);
1082 return NLP_STE_FREED_NODE;
1083 }
1084 }
1085
1086 static uint32_t
1087 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1088 struct lpfc_nodelist *ndlp,
1089 void *arg,
1090 uint32_t evt)
1091 {
1092 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1093 struct lpfc_hba *phba = vport->phba;
1094
1095 /* Don't do anything that will mess up processing of the
1096 * previous RSCN.
1097 */
1098 if (vport->fc_flag & FC_RSCN_DEFERRED)
1099 return ndlp->nlp_state;
1100
1101 /* software abort outstanding PLOGI */
1102 lpfc_els_abort(phba, ndlp);
1103
1104 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1105 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1106 spin_lock_irq(shost->host_lock);
1107 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1108 spin_unlock_irq(shost->host_lock);
1109
1110 return ndlp->nlp_state;
1111 }
1112
1113 static uint32_t
1114 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1115 void *arg, uint32_t evt)
1116 {
1117 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1118 struct lpfc_hba *phba = vport->phba;
1119 struct lpfc_iocbq *cmdiocb;
1120
1121 /* software abort outstanding ADISC */
1122 lpfc_els_abort(phba, ndlp);
1123
1124 cmdiocb = (struct lpfc_iocbq *) arg;
1125
1126 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1127 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1128 spin_lock_irq(shost->host_lock);
1129 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1130 spin_unlock_irq(shost->host_lock);
1131 if (vport->num_disc_nodes)
1132 lpfc_more_adisc(vport);
1133 }
1134 return ndlp->nlp_state;
1135 }
1136 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1137 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1138 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1139
1140 return ndlp->nlp_state;
1141 }
1142
1143 static uint32_t
1144 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1145 void *arg, uint32_t evt)
1146 {
1147 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1148
1149 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1150 return ndlp->nlp_state;
1151 }
1152
1153 static uint32_t
1154 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1155 void *arg, uint32_t evt)
1156 {
1157 struct lpfc_hba *phba = vport->phba;
1158 struct lpfc_iocbq *cmdiocb;
1159
1160 cmdiocb = (struct lpfc_iocbq *) arg;
1161
1162 /* software abort outstanding ADISC */
1163 lpfc_els_abort(phba, ndlp);
1164
1165 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1166 return ndlp->nlp_state;
1167 }
1168
1169 static uint32_t
1170 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1171 struct lpfc_nodelist *ndlp,
1172 void *arg, uint32_t evt)
1173 {
1174 struct lpfc_iocbq *cmdiocb;
1175
1176 cmdiocb = (struct lpfc_iocbq *) arg;
1177
1178 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1179 return ndlp->nlp_state;
1180 }
1181
1182 static uint32_t
1183 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1184 void *arg, uint32_t evt)
1185 {
1186 struct lpfc_iocbq *cmdiocb;
1187
1188 cmdiocb = (struct lpfc_iocbq *) arg;
1189
1190 /* Treat like rcv logo */
1191 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1192 return ndlp->nlp_state;
1193 }
1194
1195 static uint32_t
1196 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1197 struct lpfc_nodelist *ndlp,
1198 void *arg, uint32_t evt)
1199 {
1200 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1201 struct lpfc_hba *phba = vport->phba;
1202 struct lpfc_iocbq *cmdiocb, *rspiocb;
1203 IOCB_t *irsp;
1204 ADISC *ap;
1205 int rc;
1206
1207 cmdiocb = (struct lpfc_iocbq *) arg;
1208 rspiocb = cmdiocb->context_un.rsp_iocb;
1209
1210 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1211 irsp = &rspiocb->iocb;
1212
1213 if ((irsp->ulpStatus) ||
1214 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1215 /* 1 sec timeout */
1216 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1217 spin_lock_irq(shost->host_lock);
1218 ndlp->nlp_flag |= NLP_DELAY_TMO;
1219 spin_unlock_irq(shost->host_lock);
1220 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1221
1222 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1223 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1224
1225 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1226 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1227 lpfc_unreg_rpi(vport, ndlp);
1228 return ndlp->nlp_state;
1229 }
1230
1231 if (phba->sli_rev == LPFC_SLI_REV4) {
1232 rc = lpfc_sli4_resume_rpi(ndlp);
1233 if (rc) {
1234 /* Stay in state and retry. */
1235 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1236 return ndlp->nlp_state;
1237 }
1238 }
1239
1240 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1241 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1242 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1243 } else {
1244 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1245 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1246 }
1247
1248 return ndlp->nlp_state;
1249 }
1250
1251 static uint32_t
1252 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1253 void *arg, uint32_t evt)
1254 {
1255 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1256
1257 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1258 spin_lock_irq(shost->host_lock);
1259 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1260 spin_unlock_irq(shost->host_lock);
1261 return ndlp->nlp_state;
1262 } else {
1263 /* software abort outstanding ADISC */
1264 lpfc_els_abort(vport->phba, ndlp);
1265
1266 lpfc_drop_node(vport, ndlp);
1267 return NLP_STE_FREED_NODE;
1268 }
1269 }
1270
1271 static uint32_t
1272 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1273 struct lpfc_nodelist *ndlp,
1274 void *arg,
1275 uint32_t evt)
1276 {
1277 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1278 struct lpfc_hba *phba = vport->phba;
1279
1280 /* Don't do anything that will mess up processing of the
1281 * previous RSCN.
1282 */
1283 if (vport->fc_flag & FC_RSCN_DEFERRED)
1284 return ndlp->nlp_state;
1285
1286 /* software abort outstanding ADISC */
1287 lpfc_els_abort(phba, ndlp);
1288
1289 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1290 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1291 spin_lock_irq(shost->host_lock);
1292 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1293 spin_unlock_irq(shost->host_lock);
1294 lpfc_disc_set_adisc(vport, ndlp);
1295 return ndlp->nlp_state;
1296 }
1297
1298 static uint32_t
1299 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1300 struct lpfc_nodelist *ndlp,
1301 void *arg,
1302 uint32_t evt)
1303 {
1304 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1305
1306 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1307 return ndlp->nlp_state;
1308 }
1309
1310 static uint32_t
1311 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1312 struct lpfc_nodelist *ndlp,
1313 void *arg,
1314 uint32_t evt)
1315 {
1316 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1317
1318 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1319 return ndlp->nlp_state;
1320 }
1321
1322 static uint32_t
1323 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1324 struct lpfc_nodelist *ndlp,
1325 void *arg,
1326 uint32_t evt)
1327 {
1328 struct lpfc_hba *phba = vport->phba;
1329 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1330 LPFC_MBOXQ_t *mb;
1331 LPFC_MBOXQ_t *nextmb;
1332 struct lpfc_dmabuf *mp;
1333
1334 cmdiocb = (struct lpfc_iocbq *) arg;
1335
1336 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1337 if ((mb = phba->sli.mbox_active)) {
1338 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1339 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1340 lpfc_nlp_put(ndlp);
1341 mb->context2 = NULL;
1342 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1343 }
1344 }
1345
1346 spin_lock_irq(&phba->hbalock);
1347 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1348 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1349 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1350 mp = (struct lpfc_dmabuf *) (mb->context1);
1351 if (mp) {
1352 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1353 kfree(mp);
1354 }
1355 lpfc_nlp_put(ndlp);
1356 list_del(&mb->list);
1357 phba->sli.mboxq_cnt--;
1358 mempool_free(mb, phba->mbox_mem_pool);
1359 }
1360 }
1361 spin_unlock_irq(&phba->hbalock);
1362
1363 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1364 return ndlp->nlp_state;
1365 }
1366
1367 static uint32_t
1368 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1369 struct lpfc_nodelist *ndlp,
1370 void *arg,
1371 uint32_t evt)
1372 {
1373 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1374
1375 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1376 return ndlp->nlp_state;
1377 }
1378
1379 static uint32_t
1380 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1381 struct lpfc_nodelist *ndlp,
1382 void *arg,
1383 uint32_t evt)
1384 {
1385 struct lpfc_iocbq *cmdiocb;
1386
1387 cmdiocb = (struct lpfc_iocbq *) arg;
1388 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1389 return ndlp->nlp_state;
1390 }
1391
1392 static uint32_t
1393 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1394 struct lpfc_nodelist *ndlp,
1395 void *arg,
1396 uint32_t evt)
1397 {
1398 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1399 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1400 MAILBOX_t *mb = &pmb->u.mb;
1401 uint32_t did = mb->un.varWords[1];
1402
1403 if (mb->mbxStatus) {
1404 /* RegLogin failed */
1405 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1406 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1407 "x%x\n",
1408 did, mb->mbxStatus, vport->port_state,
1409 mb->un.varRegLogin.vpi,
1410 mb->un.varRegLogin.rpi);
1411 /*
1412 * If RegLogin failed due to lack of HBA resources do not
1413 * retry discovery.
1414 */
1415 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1416 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1417 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1418 return ndlp->nlp_state;
1419 }
1420
1421 /* Put ndlp in npr state set plogi timer for 1 sec */
1422 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1423 spin_lock_irq(shost->host_lock);
1424 ndlp->nlp_flag |= NLP_DELAY_TMO;
1425 spin_unlock_irq(shost->host_lock);
1426 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1427
1428 lpfc_issue_els_logo(vport, ndlp, 0);
1429 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1430 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1431 return ndlp->nlp_state;
1432 }
1433
1434 /* SLI4 ports have preallocated logical rpis. */
1435 if (vport->phba->sli_rev < LPFC_SLI_REV4)
1436 ndlp->nlp_rpi = mb->un.varWords[0];
1437
1438 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1439
1440 /* Only if we are not a fabric nport do we issue PRLI */
1441 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1442 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1443 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1444 lpfc_issue_els_prli(vport, ndlp, 0);
1445 } else {
1446 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1447 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1448 }
1449 return ndlp->nlp_state;
1450 }
1451
1452 static uint32_t
1453 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1454 struct lpfc_nodelist *ndlp,
1455 void *arg,
1456 uint32_t evt)
1457 {
1458 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1459
1460 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1461 spin_lock_irq(shost->host_lock);
1462 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1463 spin_unlock_irq(shost->host_lock);
1464 return ndlp->nlp_state;
1465 } else {
1466 lpfc_drop_node(vport, ndlp);
1467 return NLP_STE_FREED_NODE;
1468 }
1469 }
1470
1471 static uint32_t
1472 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1473 struct lpfc_nodelist *ndlp,
1474 void *arg,
1475 uint32_t evt)
1476 {
1477 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1478
1479 /* Don't do anything that will mess up processing of the
1480 * previous RSCN.
1481 */
1482 if (vport->fc_flag & FC_RSCN_DEFERRED)
1483 return ndlp->nlp_state;
1484
1485 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1486 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1487 spin_lock_irq(shost->host_lock);
1488 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1489 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1490 spin_unlock_irq(shost->host_lock);
1491 lpfc_disc_set_adisc(vport, ndlp);
1492 return ndlp->nlp_state;
1493 }
1494
1495 static uint32_t
1496 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1497 void *arg, uint32_t evt)
1498 {
1499 struct lpfc_iocbq *cmdiocb;
1500
1501 cmdiocb = (struct lpfc_iocbq *) arg;
1502
1503 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1504 return ndlp->nlp_state;
1505 }
1506
1507 static uint32_t
1508 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1509 void *arg, uint32_t evt)
1510 {
1511 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1512
1513 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1514 return ndlp->nlp_state;
1515 }
1516
1517 static uint32_t
1518 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1519 void *arg, uint32_t evt)
1520 {
1521 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1522
1523 /* Software abort outstanding PRLI before sending acc */
1524 lpfc_els_abort(vport->phba, ndlp);
1525
1526 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1527 return ndlp->nlp_state;
1528 }
1529
1530 static uint32_t
1531 lpfc_rcv_padisc_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_rcv_padisc(vport, ndlp, cmdiocb);
1537 return ndlp->nlp_state;
1538 }
1539
1540 /* This routine is envoked when we rcv a PRLO request from a nport
1541 * we are logged into. We should send back a PRLO rsp setting the
1542 * appropriate bits.
1543 * NEXT STATE = PRLI_ISSUE
1544 */
1545 static uint32_t
1546 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1547 void *arg, uint32_t evt)
1548 {
1549 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1550
1551 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1552 return ndlp->nlp_state;
1553 }
1554
1555 static uint32_t
1556 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1557 void *arg, uint32_t evt)
1558 {
1559 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1560 struct lpfc_iocbq *cmdiocb, *rspiocb;
1561 struct lpfc_hba *phba = vport->phba;
1562 IOCB_t *irsp;
1563 PRLI *npr;
1564
1565 cmdiocb = (struct lpfc_iocbq *) arg;
1566 rspiocb = cmdiocb->context_un.rsp_iocb;
1567 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1568
1569 irsp = &rspiocb->iocb;
1570 if (irsp->ulpStatus) {
1571 if ((vport->port_type == LPFC_NPIV_PORT) &&
1572 vport->cfg_restrict_login) {
1573 goto out;
1574 }
1575 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1576 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1577 return ndlp->nlp_state;
1578 }
1579
1580 /* Check out PRLI rsp */
1581 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1582 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1583 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1584 (npr->prliType == PRLI_FCP_TYPE)) {
1585 if (npr->initiatorFunc)
1586 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1587 if (npr->targetFunc)
1588 ndlp->nlp_type |= NLP_FCP_TARGET;
1589 if (npr->Retry)
1590 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1591 }
1592 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1593 (vport->port_type == LPFC_NPIV_PORT) &&
1594 vport->cfg_restrict_login) {
1595 out:
1596 spin_lock_irq(shost->host_lock);
1597 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1598 spin_unlock_irq(shost->host_lock);
1599 lpfc_issue_els_logo(vport, ndlp, 0);
1600
1601 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1602 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1603 return ndlp->nlp_state;
1604 }
1605
1606 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1607 if (ndlp->nlp_type & NLP_FCP_TARGET)
1608 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1609 else
1610 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1611 return ndlp->nlp_state;
1612 }
1613
1614 /*! lpfc_device_rm_prli_issue
1615 *
1616 * \pre
1617 * \post
1618 * \param phba
1619 * \param ndlp
1620 * \param arg
1621 * \param evt
1622 * \return uint32_t
1623 *
1624 * \b Description:
1625 * This routine is envoked when we a request to remove a nport we are in the
1626 * process of PRLIing. We should software abort outstanding prli, unreg
1627 * login, send a logout. We will change node state to UNUSED_NODE, put it
1628 * on plogi list so it can be freed when LOGO completes.
1629 *
1630 */
1631
1632 static uint32_t
1633 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1634 void *arg, uint32_t evt)
1635 {
1636 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1637
1638 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1639 spin_lock_irq(shost->host_lock);
1640 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1641 spin_unlock_irq(shost->host_lock);
1642 return ndlp->nlp_state;
1643 } else {
1644 /* software abort outstanding PLOGI */
1645 lpfc_els_abort(vport->phba, ndlp);
1646
1647 lpfc_drop_node(vport, ndlp);
1648 return NLP_STE_FREED_NODE;
1649 }
1650 }
1651
1652
1653 /*! lpfc_device_recov_prli_issue
1654 *
1655 * \pre
1656 * \post
1657 * \param phba
1658 * \param ndlp
1659 * \param arg
1660 * \param evt
1661 * \return uint32_t
1662 *
1663 * \b Description:
1664 * The routine is envoked when the state of a device is unknown, like
1665 * during a link down. We should remove the nodelist entry from the
1666 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1667 * outstanding PRLI command, then free the node entry.
1668 */
1669 static uint32_t
1670 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1671 struct lpfc_nodelist *ndlp,
1672 void *arg,
1673 uint32_t evt)
1674 {
1675 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1676 struct lpfc_hba *phba = vport->phba;
1677
1678 /* Don't do anything that will mess up processing of the
1679 * previous RSCN.
1680 */
1681 if (vport->fc_flag & FC_RSCN_DEFERRED)
1682 return ndlp->nlp_state;
1683
1684 /* software abort outstanding PRLI */
1685 lpfc_els_abort(phba, ndlp);
1686
1687 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1688 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1689 spin_lock_irq(shost->host_lock);
1690 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1691 spin_unlock_irq(shost->host_lock);
1692 lpfc_disc_set_adisc(vport, ndlp);
1693 return ndlp->nlp_state;
1694 }
1695
1696 static uint32_t
1697 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1698 void *arg, uint32_t evt)
1699 {
1700 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1701
1702 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1703 return ndlp->nlp_state;
1704 }
1705
1706 static uint32_t
1707 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1708 void *arg, uint32_t evt)
1709 {
1710 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1711
1712 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1713 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1714 return ndlp->nlp_state;
1715 }
1716
1717 static uint32_t
1718 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1719 void *arg, uint32_t evt)
1720 {
1721 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1722
1723 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1724 return ndlp->nlp_state;
1725 }
1726
1727 static uint32_t
1728 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1729 void *arg, uint32_t evt)
1730 {
1731 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1732
1733 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1734 return ndlp->nlp_state;
1735 }
1736
1737 static uint32_t
1738 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1739 void *arg, uint32_t evt)
1740 {
1741 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1742
1743 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1744 return ndlp->nlp_state;
1745 }
1746
1747 static uint32_t
1748 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1749 struct lpfc_nodelist *ndlp,
1750 void *arg,
1751 uint32_t evt)
1752 {
1753 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1754
1755 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1756 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1757 spin_lock_irq(shost->host_lock);
1758 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1759 spin_unlock_irq(shost->host_lock);
1760 lpfc_disc_set_adisc(vport, ndlp);
1761
1762 return ndlp->nlp_state;
1763 }
1764
1765 static uint32_t
1766 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1767 void *arg, uint32_t evt)
1768 {
1769 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1770
1771 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1772 return ndlp->nlp_state;
1773 }
1774
1775 static uint32_t
1776 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1777 void *arg, uint32_t evt)
1778 {
1779 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1780
1781 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1782 return ndlp->nlp_state;
1783 }
1784
1785 static uint32_t
1786 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1787 void *arg, uint32_t evt)
1788 {
1789 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1790
1791 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1792 return ndlp->nlp_state;
1793 }
1794
1795 static uint32_t
1796 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1797 struct lpfc_nodelist *ndlp,
1798 void *arg, uint32_t evt)
1799 {
1800 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1801
1802 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1803 return ndlp->nlp_state;
1804 }
1805
1806 static uint32_t
1807 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1808 void *arg, uint32_t evt)
1809 {
1810 struct lpfc_hba *phba = vport->phba;
1811 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1812
1813 /* flush the target */
1814 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1815 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1816
1817 /* Treat like rcv logo */
1818 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1819 return ndlp->nlp_state;
1820 }
1821
1822 static uint32_t
1823 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1824 struct lpfc_nodelist *ndlp,
1825 void *arg,
1826 uint32_t evt)
1827 {
1828 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1829
1830 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1831 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1832 spin_lock_irq(shost->host_lock);
1833 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1834 spin_unlock_irq(shost->host_lock);
1835 lpfc_disc_set_adisc(vport, ndlp);
1836 return ndlp->nlp_state;
1837 }
1838
1839 static uint32_t
1840 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1841 void *arg, uint32_t evt)
1842 {
1843 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1844 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1845
1846 /* Ignore PLOGI if we have an outstanding LOGO */
1847 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1848 return ndlp->nlp_state;
1849 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1850 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1851 spin_lock_irq(shost->host_lock);
1852 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1853 spin_unlock_irq(shost->host_lock);
1854 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1855 /* send PLOGI immediately, move to PLOGI issue state */
1856 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1857 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1858 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1859 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1860 }
1861 }
1862 return ndlp->nlp_state;
1863 }
1864
1865 static uint32_t
1866 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1867 void *arg, uint32_t evt)
1868 {
1869 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1870 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1871 struct ls_rjt stat;
1872
1873 memset(&stat, 0, sizeof (struct ls_rjt));
1874 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1875 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1876 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1877
1878 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1879 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1880 spin_lock_irq(shost->host_lock);
1881 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1882 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1883 spin_unlock_irq(shost->host_lock);
1884 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1885 lpfc_issue_els_adisc(vport, ndlp, 0);
1886 } else {
1887 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1888 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1889 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1890 }
1891 }
1892 return ndlp->nlp_state;
1893 }
1894
1895 static uint32_t
1896 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1897 void *arg, uint32_t evt)
1898 {
1899 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1900
1901 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1902 return ndlp->nlp_state;
1903 }
1904
1905 static uint32_t
1906 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1907 void *arg, uint32_t evt)
1908 {
1909 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1910
1911 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1912 /*
1913 * Do not start discovery if discovery is about to start
1914 * or discovery in progress for this node. Starting discovery
1915 * here will affect the counting of discovery threads.
1916 */
1917 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1918 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1919 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1920 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1921 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1922 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1923 lpfc_issue_els_adisc(vport, ndlp, 0);
1924 } else {
1925 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1926 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1927 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1928 }
1929 }
1930 return ndlp->nlp_state;
1931 }
1932
1933 static uint32_t
1934 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1935 void *arg, uint32_t evt)
1936 {
1937 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1938 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1939
1940 spin_lock_irq(shost->host_lock);
1941 ndlp->nlp_flag |= NLP_LOGO_ACC;
1942 spin_unlock_irq(shost->host_lock);
1943
1944 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1945
1946 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1947 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1948 spin_lock_irq(shost->host_lock);
1949 ndlp->nlp_flag |= NLP_DELAY_TMO;
1950 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1951 spin_unlock_irq(shost->host_lock);
1952 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1953 } else {
1954 spin_lock_irq(shost->host_lock);
1955 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1956 spin_unlock_irq(shost->host_lock);
1957 }
1958 return ndlp->nlp_state;
1959 }
1960
1961 static uint32_t
1962 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1963 void *arg, uint32_t evt)
1964 {
1965 struct lpfc_iocbq *cmdiocb, *rspiocb;
1966 IOCB_t *irsp;
1967
1968 cmdiocb = (struct lpfc_iocbq *) arg;
1969 rspiocb = cmdiocb->context_un.rsp_iocb;
1970
1971 irsp = &rspiocb->iocb;
1972 if (irsp->ulpStatus) {
1973 ndlp->nlp_flag |= NLP_DEFER_RM;
1974 return NLP_STE_FREED_NODE;
1975 }
1976 return ndlp->nlp_state;
1977 }
1978
1979 static uint32_t
1980 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1981 void *arg, uint32_t evt)
1982 {
1983 struct lpfc_iocbq *cmdiocb, *rspiocb;
1984 IOCB_t *irsp;
1985
1986 cmdiocb = (struct lpfc_iocbq *) arg;
1987 rspiocb = cmdiocb->context_un.rsp_iocb;
1988
1989 irsp = &rspiocb->iocb;
1990 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1991 lpfc_drop_node(vport, ndlp);
1992 return NLP_STE_FREED_NODE;
1993 }
1994 return ndlp->nlp_state;
1995 }
1996
1997 static uint32_t
1998 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1999 void *arg, uint32_t evt)
2000 {
2001 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2002 if (ndlp->nlp_DID == Fabric_DID) {
2003 spin_lock_irq(shost->host_lock);
2004 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2005 spin_unlock_irq(shost->host_lock);
2006 }
2007 lpfc_unreg_rpi(vport, ndlp);
2008 return ndlp->nlp_state;
2009 }
2010
2011 static uint32_t
2012 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2013 void *arg, uint32_t evt)
2014 {
2015 struct lpfc_iocbq *cmdiocb, *rspiocb;
2016 IOCB_t *irsp;
2017
2018 cmdiocb = (struct lpfc_iocbq *) arg;
2019 rspiocb = cmdiocb->context_un.rsp_iocb;
2020
2021 irsp = &rspiocb->iocb;
2022 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2023 lpfc_drop_node(vport, ndlp);
2024 return NLP_STE_FREED_NODE;
2025 }
2026 return ndlp->nlp_state;
2027 }
2028
2029 static uint32_t
2030 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2031 struct lpfc_nodelist *ndlp,
2032 void *arg, uint32_t evt)
2033 {
2034 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2035 MAILBOX_t *mb = &pmb->u.mb;
2036
2037 if (!mb->mbxStatus) {
2038 /* SLI4 ports have preallocated logical rpis. */
2039 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2040 ndlp->nlp_rpi = mb->un.varWords[0];
2041 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2042 } else {
2043 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2044 lpfc_drop_node(vport, ndlp);
2045 return NLP_STE_FREED_NODE;
2046 }
2047 }
2048 return ndlp->nlp_state;
2049 }
2050
2051 static uint32_t
2052 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2053 void *arg, uint32_t evt)
2054 {
2055 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2056
2057 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2058 spin_lock_irq(shost->host_lock);
2059 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2060 spin_unlock_irq(shost->host_lock);
2061 return ndlp->nlp_state;
2062 }
2063 lpfc_drop_node(vport, ndlp);
2064 return NLP_STE_FREED_NODE;
2065 }
2066
2067 static uint32_t
2068 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2069 void *arg, uint32_t evt)
2070 {
2071 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2072
2073 /* Don't do anything that will mess up processing of the
2074 * previous RSCN.
2075 */
2076 if (vport->fc_flag & FC_RSCN_DEFERRED)
2077 return ndlp->nlp_state;
2078
2079 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2080 spin_lock_irq(shost->host_lock);
2081 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2082 spin_unlock_irq(shost->host_lock);
2083 return ndlp->nlp_state;
2084 }
2085
2086
2087 /* This next section defines the NPort Discovery State Machine */
2088
2089 /* There are 4 different double linked lists nodelist entries can reside on.
2090 * The plogi list and adisc list are used when Link Up discovery or RSCN
2091 * processing is needed. Each list holds the nodes that we will send PLOGI
2092 * or ADISC on. These lists will keep track of what nodes will be effected
2093 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2094 * The unmapped_list will contain all nodes that we have successfully logged
2095 * into at the Fibre Channel level. The mapped_list will contain all nodes
2096 * that are mapped FCP targets.
2097 */
2098 /*
2099 * The bind list is a list of undiscovered (potentially non-existent) nodes
2100 * that we have saved binding information on. This information is used when
2101 * nodes transition from the unmapped to the mapped list.
2102 */
2103 /* For UNUSED_NODE state, the node has just been allocated .
2104 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2105 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2106 * and put on the unmapped list. For ADISC processing, the node is taken off
2107 * the ADISC list and placed on either the mapped or unmapped list (depending
2108 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2109 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2110 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2111 * node, the node is taken off the unmapped list. The binding list is checked
2112 * for a valid binding, or a binding is automatically assigned. If binding
2113 * assignment is unsuccessful, the node is left on the unmapped list. If
2114 * binding assignment is successful, the associated binding list entry (if
2115 * any) is removed, and the node is placed on the mapped list.
2116 */
2117 /*
2118 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2119 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2120 * expire, all effected nodes will receive a DEVICE_RM event.
2121 */
2122 /*
2123 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2124 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2125 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2126 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2127 * we will first process the ADISC list. 32 entries are processed initially and
2128 * ADISC is initited for each one. Completions / Events for each node are
2129 * funnelled thru the state machine. As each node finishes ADISC processing, it
2130 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2131 * waiting, and the ADISC list count is identically 0, then we are done. For
2132 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2133 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2134 * list. 32 entries are processed initially and PLOGI is initited for each one.
2135 * Completions / Events for each node are funnelled thru the state machine. As
2136 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2137 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2138 * indentically 0, then we are done. We have now completed discovery / RSCN
2139 * handling. Upon completion, ALL nodes should be on either the mapped or
2140 * unmapped lists.
2141 */
2142
2143 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2144 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2145 /* Action routine Event Current State */
2146 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2147 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2148 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2149 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2150 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2151 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2152 lpfc_disc_illegal, /* CMPL_PLOGI */
2153 lpfc_disc_illegal, /* CMPL_PRLI */
2154 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2155 lpfc_disc_illegal, /* CMPL_ADISC */
2156 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2157 lpfc_device_rm_unused_node, /* DEVICE_RM */
2158 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
2159
2160 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2161 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2162 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2163 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2164 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2165 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2166 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2167 lpfc_disc_illegal, /* CMPL_PRLI */
2168 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2169 lpfc_disc_illegal, /* CMPL_ADISC */
2170 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2171 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2172 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2173
2174 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2175 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2176 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2177 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2178 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2179 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2180 lpfc_disc_illegal, /* CMPL_PLOGI */
2181 lpfc_disc_illegal, /* CMPL_PRLI */
2182 lpfc_disc_illegal, /* CMPL_LOGO */
2183 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2184 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2185 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2186 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2187
2188 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2189 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2190 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2191 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2192 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2193 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2194 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2195 lpfc_disc_illegal, /* CMPL_PRLI */
2196 lpfc_disc_illegal, /* CMPL_LOGO */
2197 lpfc_disc_illegal, /* CMPL_ADISC */
2198 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2199 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2200 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2201
2202 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2203 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2204 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2205 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2206 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2207 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2208 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2209 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2210 lpfc_disc_illegal, /* CMPL_LOGO */
2211 lpfc_disc_illegal, /* CMPL_ADISC */
2212 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2213 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2214 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2215
2216 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2217 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2218 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2219 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2220 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2221 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2222 lpfc_disc_illegal, /* CMPL_PLOGI */
2223 lpfc_disc_illegal, /* CMPL_PRLI */
2224 lpfc_disc_illegal, /* CMPL_LOGO */
2225 lpfc_disc_illegal, /* CMPL_ADISC */
2226 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2227 lpfc_disc_illegal, /* DEVICE_RM */
2228 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2229
2230 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2231 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2232 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2233 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2234 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2235 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2236 lpfc_disc_illegal, /* CMPL_PLOGI */
2237 lpfc_disc_illegal, /* CMPL_PRLI */
2238 lpfc_disc_illegal, /* CMPL_LOGO */
2239 lpfc_disc_illegal, /* CMPL_ADISC */
2240 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2241 lpfc_disc_illegal, /* DEVICE_RM */
2242 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2243
2244 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2245 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2246 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2247 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2248 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2249 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2250 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2251 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2252 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2253 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2254 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2255 lpfc_device_rm_npr_node, /* DEVICE_RM */
2256 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2257 };
2258
2259 int
2260 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2261 void *arg, uint32_t evt)
2262 {
2263 uint32_t cur_state, rc;
2264 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2265 uint32_t);
2266 uint32_t got_ndlp = 0;
2267
2268 if (lpfc_nlp_get(ndlp))
2269 got_ndlp = 1;
2270
2271 cur_state = ndlp->nlp_state;
2272
2273 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2274 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2275 "0211 DSM in event x%x on NPort x%x in "
2276 "state %d Data: x%x\n",
2277 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2278
2279 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2280 "DSM in: evt:%d ste:%d did:x%x",
2281 evt, cur_state, ndlp->nlp_DID);
2282
2283 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2284 rc = (func) (vport, ndlp, arg, evt);
2285
2286 /* DSM out state <rc> on NPort <nlp_DID> */
2287 if (got_ndlp) {
2288 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2289 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2290 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2291
2292 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2293 "DSM out: ste:%d did:x%x flg:x%x",
2294 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2295 /* Decrement the ndlp reference count held for this function */
2296 lpfc_nlp_put(ndlp);
2297 } else {
2298 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2299 "0213 DSM out state %d on NPort free\n", rc);
2300
2301 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2302 "DSM out: ste:%d did:x%x flg:x%x",
2303 rc, 0, 0);
2304 }
2305
2306 return rc;
2307 }