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staging: usbip: bugfix for isochronous packets and optimization
[zen-stable.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blob52b35159fc352d7b27c3f7ee02cd9b1873d7cd7b
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 /*
354 * Need to unreg_login if we are already in one of these states and
355 * change to NPR state. This will block the port until after the ACC
356 * completes and the reg_login is issued and completed.
357 */
358 switch (ndlp->nlp_state) {
359 case NLP_STE_NPR_NODE:
360 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
361 break;
362 case NLP_STE_REG_LOGIN_ISSUE:
363 case NLP_STE_PRLI_ISSUE:
364 case NLP_STE_UNMAPPED_NODE:
365 case NLP_STE_MAPPED_NODE:
366 lpfc_unreg_rpi(vport, ndlp);
367 ndlp->nlp_prev_state = ndlp->nlp_state;
368 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
369 }
370
371 if ((vport->fc_flag & FC_PT2PT) &&
372 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
373 /* rcv'ed PLOGI decides what our NPortId will be */
374 vport->fc_myDID = icmd->un.rcvels.parmRo;
375 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
376 if (mbox == NULL)
377 goto out;
378 lpfc_config_link(phba, mbox);
379 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
380 mbox->vport = vport;
381 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
382 if (rc == MBX_NOT_FINISHED) {
383 mempool_free(mbox, phba->mbox_mem_pool);
384 goto out;
385 }
386
387 lpfc_can_disctmo(vport);
388 }
389 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
390 if (!mbox)
391 goto out;
392
393 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
394 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
395 if (rc) {
396 mempool_free(mbox, phba->mbox_mem_pool);
397 goto out;
398 }
399
400 /* ACC PLOGI rsp command needs to execute first,
401 * queue this mbox command to be processed later.
402 */
403 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
404 /*
405 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
406 * command issued in lpfc_cmpl_els_acc().
407 */
408 mbox->vport = vport;
409 spin_lock_irq(shost->host_lock);
410 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
411 spin_unlock_irq(shost->host_lock);
412
413 /*
414 * If there is an outstanding PLOGI issued, abort it before
415 * sending ACC rsp for received PLOGI. If pending plogi
416 * is not canceled here, the plogi will be rejected by
417 * remote port and will be retried. On a configuration with
418 * single discovery thread, this will cause a huge delay in
419 * discovery. Also this will cause multiple state machines
420 * running in parallel for this node.
421 */
422 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
423 /* software abort outstanding PLOGI */
424 lpfc_els_abort(phba, ndlp);
425 }
426
427 if ((vport->port_type == LPFC_NPIV_PORT &&
428 vport->cfg_restrict_login)) {
429
430 /* In order to preserve RPIs, we want to cleanup
431 * the default RPI the firmware created to rcv
432 * this ELS request. The only way to do this is
433 * to register, then unregister the RPI.
434 */
435 spin_lock_irq(shost->host_lock);
436 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
437 spin_unlock_irq(shost->host_lock);
438 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
439 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
440 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
441 ndlp, mbox);
442 return 1;
443 }
444 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
445 return 1;
446 out:
447 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
448 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
449 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
450 return 0;
451 }
452
453 static int
454 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
455 struct lpfc_iocbq *cmdiocb)
456 {
457 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
458 struct lpfc_dmabuf *pcmd;
459 struct serv_parm *sp;
460 struct lpfc_name *pnn, *ppn;
461 struct ls_rjt stat;
462 ADISC *ap;
463 IOCB_t *icmd;
464 uint32_t *lp;
465 uint32_t cmd;
466
467 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
468 lp = (uint32_t *) pcmd->virt;
469
470 cmd = *lp++;
471 if (cmd == ELS_CMD_ADISC) {
472 ap = (ADISC *) lp;
473 pnn = (struct lpfc_name *) & ap->nodeName;
474 ppn = (struct lpfc_name *) & ap->portName;
475 } else {
476 sp = (struct serv_parm *) lp;
477 pnn = (struct lpfc_name *) & sp->nodeName;
478 ppn = (struct lpfc_name *) & sp->portName;
479 }
480
481 icmd = &cmdiocb->iocb;
482 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
483 if (cmd == ELS_CMD_ADISC) {
484 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
485 } else {
486 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
487 NULL);
488 }
489 return 1;
490 }
491 /* Reject this request because invalid parameters */
492 stat.un.b.lsRjtRsvd0 = 0;
493 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
494 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
495 stat.un.b.vendorUnique = 0;
496 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
497
498 /* 1 sec timeout */
499 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
500
501 spin_lock_irq(shost->host_lock);
502 ndlp->nlp_flag |= NLP_DELAY_TMO;
503 spin_unlock_irq(shost->host_lock);
504 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
505 ndlp->nlp_prev_state = ndlp->nlp_state;
506 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
507 return 0;
508 }
509
510 static int
511 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
512 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
513 {
514 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
515 struct lpfc_hba *phba = vport->phba;
516 struct lpfc_vport **vports;
517 int i, active_vlink_present = 0 ;
518
519 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
520 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
521 * PLOGIs during LOGO storms from a device.
522 */
523 spin_lock_irq(shost->host_lock);
524 ndlp->nlp_flag |= NLP_LOGO_ACC;
525 spin_unlock_irq(shost->host_lock);
526 if (els_cmd == ELS_CMD_PRLO)
527 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
528 else
529 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
530 if (ndlp->nlp_DID == Fabric_DID) {
531 if (vport->port_state <= LPFC_FDISC)
532 goto out;
533 lpfc_linkdown_port(vport);
534 spin_lock_irq(shost->host_lock);
535 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
536 spin_unlock_irq(shost->host_lock);
537 vports = lpfc_create_vport_work_array(phba);
538 if (vports) {
539 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
540 i++) {
541 if ((!(vports[i]->fc_flag &
542 FC_VPORT_LOGO_RCVD)) &&
543 (vports[i]->port_state > LPFC_FDISC)) {
544 active_vlink_present = 1;
545 break;
546 }
547 }
548 lpfc_destroy_vport_work_array(phba, vports);
549 }
550
551 if (active_vlink_present) {
552 /*
553 * If there are other active VLinks present,
554 * re-instantiate the Vlink using FDISC.
555 */
556 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
557 spin_lock_irq(shost->host_lock);
558 ndlp->nlp_flag |= NLP_DELAY_TMO;
559 spin_unlock_irq(shost->host_lock);
560 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
561 vport->port_state = LPFC_FDISC;
562 } else {
563 spin_lock_irq(shost->host_lock);
564 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
565 spin_unlock_irq(shost->host_lock);
566 lpfc_retry_pport_discovery(phba);
567 }
568 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
569 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
570 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
571 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
572 /* Only try to re-login if this is NOT a Fabric Node */
573 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
574 spin_lock_irq(shost->host_lock);
575 ndlp->nlp_flag |= NLP_DELAY_TMO;
576 spin_unlock_irq(shost->host_lock);
577
578 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
579 }
580 out:
581 ndlp->nlp_prev_state = ndlp->nlp_state;
582 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
583
584 spin_lock_irq(shost->host_lock);
585 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
586 spin_unlock_irq(shost->host_lock);
587 /* The driver has to wait until the ACC completes before it continues
588 * processing the LOGO. The action will resume in
589 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
590 * unreg_login, the driver waits so the ACC does not get aborted.
591 */
592 return 0;
593 }
594
595 static void
596 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
597 struct lpfc_iocbq *cmdiocb)
598 {
599 struct lpfc_dmabuf *pcmd;
600 uint32_t *lp;
601 PRLI *npr;
602 struct fc_rport *rport = ndlp->rport;
603 u32 roles;
604
605 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
606 lp = (uint32_t *) pcmd->virt;
607 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
608
609 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
610 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
611 if (npr->prliType == PRLI_FCP_TYPE) {
612 if (npr->initiatorFunc)
613 ndlp->nlp_type |= NLP_FCP_INITIATOR;
614 if (npr->targetFunc)
615 ndlp->nlp_type |= NLP_FCP_TARGET;
616 if (npr->Retry)
617 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
618 }
619 if (rport) {
620 /* We need to update the rport role values */
621 roles = FC_RPORT_ROLE_UNKNOWN;
622 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
623 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
624 if (ndlp->nlp_type & NLP_FCP_TARGET)
625 roles |= FC_RPORT_ROLE_FCP_TARGET;
626
627 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
628 "rport rolechg: role:x%x did:x%x flg:x%x",
629 roles, ndlp->nlp_DID, ndlp->nlp_flag);
630
631 fc_remote_port_rolechg(rport, roles);
632 }
633 }
634
635 static uint32_t
636 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
637 {
638 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
639
640 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
641 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
642 return 0;
643 }
644
645 if (!(vport->fc_flag & FC_PT2PT)) {
646 /* Check config parameter use-adisc or FCP-2 */
647 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
648 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
649 (ndlp->nlp_type & NLP_FCP_TARGET))) {
650 spin_lock_irq(shost->host_lock);
651 ndlp->nlp_flag |= NLP_NPR_ADISC;
652 spin_unlock_irq(shost->host_lock);
653 return 1;
654 }
655 }
656 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
657 lpfc_unreg_rpi(vport, ndlp);
658 return 0;
659 }
660 /**
661 * lpfc_release_rpi - Release a RPI by issueing unreg_login mailbox cmd.
662 * @phba : Pointer to lpfc_hba structure.
663 * @vport: Pointer to lpfc_vport structure.
664 * @rpi : rpi to be release.
665 *
666 * This function will send a unreg_login mailbox command to the firmware
667 * to release a rpi.
668 **/
669 void
670 lpfc_release_rpi(struct lpfc_hba *phba,
671 struct lpfc_vport *vport,
672 uint16_t rpi)
673 {
674 LPFC_MBOXQ_t *pmb;
675 int rc;
676
677 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
678 GFP_KERNEL);
679 if (!pmb)
680 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
681 "2796 mailbox memory allocation failed \n");
682 else {
683 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
684 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
685 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
686 if (rc == MBX_NOT_FINISHED)
687 mempool_free(pmb, phba->mbox_mem_pool);
688 }
689 }
690
691 static uint32_t
692 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
693 void *arg, uint32_t evt)
694 {
695 struct lpfc_hba *phba;
696 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
697 MAILBOX_t *mb;
698 uint16_t rpi;
699
700 phba = vport->phba;
701 /* Release the RPI if reglogin completing */
702 if (!(phba->pport->load_flag & FC_UNLOADING) &&
703 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
704 (!pmb->u.mb.mbxStatus)) {
705 mb = &pmb->u.mb;
706 rpi = pmb->u.mb.un.varWords[0];
707 lpfc_release_rpi(phba, vport, rpi);
708 }
709 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
710 "0271 Illegal State Transition: node x%x "
711 "event x%x, state x%x Data: x%x x%x\n",
712 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
713 ndlp->nlp_flag);
714 return ndlp->nlp_state;
715 }
716
717 static uint32_t
718 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
719 void *arg, uint32_t evt)
720 {
721 /* This transition is only legal if we previously
722 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
723 * working on the same NPortID, do nothing for this thread
724 * to stop it.
725 */
726 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
727 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
728 "0272 Illegal State Transition: node x%x "
729 "event x%x, state x%x Data: x%x x%x\n",
730 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
731 ndlp->nlp_flag);
732 }
733 return ndlp->nlp_state;
734 }
735
736 /* Start of Discovery State Machine routines */
737
738 static uint32_t
739 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
740 void *arg, uint32_t evt)
741 {
742 struct lpfc_iocbq *cmdiocb;
743
744 cmdiocb = (struct lpfc_iocbq *) arg;
745
746 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
747 return ndlp->nlp_state;
748 }
749 return NLP_STE_FREED_NODE;
750 }
751
752 static uint32_t
753 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
754 void *arg, uint32_t evt)
755 {
756 lpfc_issue_els_logo(vport, ndlp, 0);
757 return ndlp->nlp_state;
758 }
759
760 static uint32_t
761 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
762 void *arg, uint32_t evt)
763 {
764 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
765 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
766
767 spin_lock_irq(shost->host_lock);
768 ndlp->nlp_flag |= NLP_LOGO_ACC;
769 spin_unlock_irq(shost->host_lock);
770 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
771
772 return ndlp->nlp_state;
773 }
774
775 static uint32_t
776 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
777 void *arg, uint32_t evt)
778 {
779 return NLP_STE_FREED_NODE;
780 }
781
782 static uint32_t
783 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
784 void *arg, uint32_t evt)
785 {
786 return NLP_STE_FREED_NODE;
787 }
788
789 static uint32_t
790 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
791 void *arg, uint32_t evt)
792 {
793 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
794 struct lpfc_hba *phba = vport->phba;
795 struct lpfc_iocbq *cmdiocb = arg;
796 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
797 uint32_t *lp = (uint32_t *) pcmd->virt;
798 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
799 struct ls_rjt stat;
800 int port_cmp;
801
802 memset(&stat, 0, sizeof (struct ls_rjt));
803
804 /* For a PLOGI, we only accept if our portname is less
805 * than the remote portname.
806 */
807 phba->fc_stat.elsLogiCol++;
808 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
809 sizeof(struct lpfc_name));
810
811 if (port_cmp >= 0) {
812 /* Reject this request because the remote node will accept
813 ours */
814 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
815 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
816 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
817 NULL);
818 } else {
819 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
820 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
821 (vport->num_disc_nodes)) {
822 spin_lock_irq(shost->host_lock);
823 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
824 spin_unlock_irq(shost->host_lock);
825 /* Check if there are more PLOGIs to be sent */
826 lpfc_more_plogi(vport);
827 if (vport->num_disc_nodes == 0) {
828 spin_lock_irq(shost->host_lock);
829 vport->fc_flag &= ~FC_NDISC_ACTIVE;
830 spin_unlock_irq(shost->host_lock);
831 lpfc_can_disctmo(vport);
832 lpfc_end_rscn(vport);
833 }
834 }
835 } /* If our portname was less */
836
837 return ndlp->nlp_state;
838 }
839
840 static uint32_t
841 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
842 void *arg, uint32_t evt)
843 {
844 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
845 struct ls_rjt stat;
846
847 memset(&stat, 0, sizeof (struct ls_rjt));
848 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
849 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
850 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
851 return ndlp->nlp_state;
852 }
853
854 static uint32_t
855 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
856 void *arg, uint32_t evt)
857 {
858 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
859
860 /* software abort outstanding PLOGI */
861 lpfc_els_abort(vport->phba, ndlp);
862
863 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
864 return ndlp->nlp_state;
865 }
866
867 static uint32_t
868 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
869 void *arg, uint32_t evt)
870 {
871 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
872 struct lpfc_hba *phba = vport->phba;
873 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
874
875 /* software abort outstanding PLOGI */
876 lpfc_els_abort(phba, ndlp);
877
878 if (evt == NLP_EVT_RCV_LOGO) {
879 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
880 } else {
881 lpfc_issue_els_logo(vport, ndlp, 0);
882 }
883
884 /* Put ndlp in npr state set plogi timer for 1 sec */
885 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
886 spin_lock_irq(shost->host_lock);
887 ndlp->nlp_flag |= NLP_DELAY_TMO;
888 spin_unlock_irq(shost->host_lock);
889 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
890 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
891 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
892
893 return ndlp->nlp_state;
894 }
895
896 static uint32_t
897 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
898 struct lpfc_nodelist *ndlp,
899 void *arg,
900 uint32_t evt)
901 {
902 struct lpfc_hba *phba = vport->phba;
903 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
904 struct lpfc_iocbq *cmdiocb, *rspiocb;
905 struct lpfc_dmabuf *pcmd, *prsp, *mp;
906 uint32_t *lp;
907 IOCB_t *irsp;
908 struct serv_parm *sp;
909 LPFC_MBOXQ_t *mbox;
910
911 cmdiocb = (struct lpfc_iocbq *) arg;
912 rspiocb = cmdiocb->context_un.rsp_iocb;
913
914 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
915 /* Recovery from PLOGI collision logic */
916 return ndlp->nlp_state;
917 }
918
919 irsp = &rspiocb->iocb;
920
921 if (irsp->ulpStatus)
922 goto out;
923
924 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
925
926 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
927
928 lp = (uint32_t *) prsp->virt;
929 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
930
931 /* Some switches have FDMI servers returning 0 for WWN */
932 if ((ndlp->nlp_DID != FDMI_DID) &&
933 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
934 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
935 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
936 "0142 PLOGI RSP: Invalid WWN.\n");
937 goto out;
938 }
939 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
940 goto out;
941 /* PLOGI chkparm OK */
942 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
943 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
944 ndlp->nlp_DID, ndlp->nlp_state,
945 ndlp->nlp_flag, ndlp->nlp_rpi);
946 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
947 ndlp->nlp_fcp_info |= CLASS2;
948 else
949 ndlp->nlp_fcp_info |= CLASS3;
950
951 ndlp->nlp_class_sup = 0;
952 if (sp->cls1.classValid)
953 ndlp->nlp_class_sup |= FC_COS_CLASS1;
954 if (sp->cls2.classValid)
955 ndlp->nlp_class_sup |= FC_COS_CLASS2;
956 if (sp->cls3.classValid)
957 ndlp->nlp_class_sup |= FC_COS_CLASS3;
958 if (sp->cls4.classValid)
959 ndlp->nlp_class_sup |= FC_COS_CLASS4;
960 ndlp->nlp_maxframe =
961 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
962
963 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
964 if (!mbox) {
965 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
966 "0133 PLOGI: no memory for reg_login "
967 "Data: x%x x%x x%x x%x\n",
968 ndlp->nlp_DID, ndlp->nlp_state,
969 ndlp->nlp_flag, ndlp->nlp_rpi);
970 goto out;
971 }
972
973 lpfc_unreg_rpi(vport, ndlp);
974
975 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
976 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
977 switch (ndlp->nlp_DID) {
978 case NameServer_DID:
979 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
980 break;
981 case FDMI_DID:
982 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
983 break;
984 default:
985 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
986 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
987 }
988 mbox->context2 = lpfc_nlp_get(ndlp);
989 mbox->vport = vport;
990 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
991 != MBX_NOT_FINISHED) {
992 lpfc_nlp_set_state(vport, ndlp,
993 NLP_STE_REG_LOGIN_ISSUE);
994 return ndlp->nlp_state;
995 }
996 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
997 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
998 /* decrement node reference count to the failed mbox
999 * command
1000 */
1001 lpfc_nlp_put(ndlp);
1002 mp = (struct lpfc_dmabuf *) mbox->context1;
1003 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1004 kfree(mp);
1005 mempool_free(mbox, phba->mbox_mem_pool);
1006
1007 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1008 "0134 PLOGI: cannot issue reg_login "
1009 "Data: x%x x%x x%x x%x\n",
1010 ndlp->nlp_DID, ndlp->nlp_state,
1011 ndlp->nlp_flag, ndlp->nlp_rpi);
1012 } else {
1013 mempool_free(mbox, phba->mbox_mem_pool);
1014
1015 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1016 "0135 PLOGI: cannot format reg_login "
1017 "Data: x%x x%x x%x x%x\n",
1018 ndlp->nlp_DID, ndlp->nlp_state,
1019 ndlp->nlp_flag, ndlp->nlp_rpi);
1020 }
1021
1022
1023 out:
1024 if (ndlp->nlp_DID == NameServer_DID) {
1025 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1026 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1027 "0261 Cannot Register NameServer login\n");
1028 }
1029
1030 spin_lock_irq(shost->host_lock);
1031 ndlp->nlp_flag |= NLP_DEFER_RM;
1032 spin_unlock_irq(shost->host_lock);
1033 return NLP_STE_FREED_NODE;
1034 }
1035
1036 static uint32_t
1037 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1038 void *arg, uint32_t evt)
1039 {
1040 return ndlp->nlp_state;
1041 }
1042
1043 static uint32_t
1044 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1045 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1046 {
1047 struct lpfc_hba *phba;
1048 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1049 MAILBOX_t *mb = &pmb->u.mb;
1050 uint16_t rpi;
1051
1052 phba = vport->phba;
1053 /* Release the RPI */
1054 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1055 !mb->mbxStatus) {
1056 rpi = pmb->u.mb.un.varWords[0];
1057 lpfc_release_rpi(phba, vport, rpi);
1058 }
1059 return ndlp->nlp_state;
1060 }
1061
1062 static uint32_t
1063 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1064 void *arg, uint32_t evt)
1065 {
1066 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1067
1068 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1069 spin_lock_irq(shost->host_lock);
1070 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1071 spin_unlock_irq(shost->host_lock);
1072 return ndlp->nlp_state;
1073 } else {
1074 /* software abort outstanding PLOGI */
1075 lpfc_els_abort(vport->phba, ndlp);
1076
1077 lpfc_drop_node(vport, ndlp);
1078 return NLP_STE_FREED_NODE;
1079 }
1080 }
1081
1082 static uint32_t
1083 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1084 struct lpfc_nodelist *ndlp,
1085 void *arg,
1086 uint32_t evt)
1087 {
1088 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1089 struct lpfc_hba *phba = vport->phba;
1090
1091 /* Don't do anything that will mess up processing of the
1092 * previous RSCN.
1093 */
1094 if (vport->fc_flag & FC_RSCN_DEFERRED)
1095 return ndlp->nlp_state;
1096
1097 /* software abort outstanding PLOGI */
1098 lpfc_els_abort(phba, ndlp);
1099
1100 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1101 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1102 spin_lock_irq(shost->host_lock);
1103 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1104 spin_unlock_irq(shost->host_lock);
1105
1106 return ndlp->nlp_state;
1107 }
1108
1109 static uint32_t
1110 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1111 void *arg, uint32_t evt)
1112 {
1113 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1114 struct lpfc_hba *phba = vport->phba;
1115 struct lpfc_iocbq *cmdiocb;
1116
1117 /* software abort outstanding ADISC */
1118 lpfc_els_abort(phba, ndlp);
1119
1120 cmdiocb = (struct lpfc_iocbq *) arg;
1121
1122 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1123 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1124 spin_lock_irq(shost->host_lock);
1125 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1126 spin_unlock_irq(shost->host_lock);
1127 if (vport->num_disc_nodes)
1128 lpfc_more_adisc(vport);
1129 }
1130 return ndlp->nlp_state;
1131 }
1132 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1133 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1134 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1135
1136 return ndlp->nlp_state;
1137 }
1138
1139 static uint32_t
1140 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1141 void *arg, uint32_t evt)
1142 {
1143 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1144
1145 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1146 return ndlp->nlp_state;
1147 }
1148
1149 static uint32_t
1150 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1151 void *arg, uint32_t evt)
1152 {
1153 struct lpfc_hba *phba = vport->phba;
1154 struct lpfc_iocbq *cmdiocb;
1155
1156 cmdiocb = (struct lpfc_iocbq *) arg;
1157
1158 /* software abort outstanding ADISC */
1159 lpfc_els_abort(phba, ndlp);
1160
1161 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1162 return ndlp->nlp_state;
1163 }
1164
1165 static uint32_t
1166 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1167 struct lpfc_nodelist *ndlp,
1168 void *arg, uint32_t evt)
1169 {
1170 struct lpfc_iocbq *cmdiocb;
1171
1172 cmdiocb = (struct lpfc_iocbq *) arg;
1173
1174 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1175 return ndlp->nlp_state;
1176 }
1177
1178 static uint32_t
1179 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1180 void *arg, uint32_t evt)
1181 {
1182 struct lpfc_iocbq *cmdiocb;
1183
1184 cmdiocb = (struct lpfc_iocbq *) arg;
1185
1186 /* Treat like rcv logo */
1187 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1188 return ndlp->nlp_state;
1189 }
1190
1191 static uint32_t
1192 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1193 struct lpfc_nodelist *ndlp,
1194 void *arg, uint32_t evt)
1195 {
1196 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1197 struct lpfc_hba *phba = vport->phba;
1198 struct lpfc_iocbq *cmdiocb, *rspiocb;
1199 IOCB_t *irsp;
1200 ADISC *ap;
1201 int rc;
1202
1203 cmdiocb = (struct lpfc_iocbq *) arg;
1204 rspiocb = cmdiocb->context_un.rsp_iocb;
1205
1206 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1207 irsp = &rspiocb->iocb;
1208
1209 if ((irsp->ulpStatus) ||
1210 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1211 /* 1 sec timeout */
1212 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1213 spin_lock_irq(shost->host_lock);
1214 ndlp->nlp_flag |= NLP_DELAY_TMO;
1215 spin_unlock_irq(shost->host_lock);
1216 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1217
1218 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1219 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1220
1221 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1222 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1223 lpfc_unreg_rpi(vport, ndlp);
1224 return ndlp->nlp_state;
1225 }
1226
1227 if (phba->sli_rev == LPFC_SLI_REV4) {
1228 rc = lpfc_sli4_resume_rpi(ndlp);
1229 if (rc) {
1230 /* Stay in state and retry. */
1231 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1232 return ndlp->nlp_state;
1233 }
1234 }
1235
1236 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1237 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1238 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1239 } else {
1240 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1241 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1242 }
1243
1244 return ndlp->nlp_state;
1245 }
1246
1247 static uint32_t
1248 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1249 void *arg, uint32_t evt)
1250 {
1251 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1252
1253 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1254 spin_lock_irq(shost->host_lock);
1255 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1256 spin_unlock_irq(shost->host_lock);
1257 return ndlp->nlp_state;
1258 } else {
1259 /* software abort outstanding ADISC */
1260 lpfc_els_abort(vport->phba, ndlp);
1261
1262 lpfc_drop_node(vport, ndlp);
1263 return NLP_STE_FREED_NODE;
1264 }
1265 }
1266
1267 static uint32_t
1268 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1269 struct lpfc_nodelist *ndlp,
1270 void *arg,
1271 uint32_t evt)
1272 {
1273 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1274 struct lpfc_hba *phba = vport->phba;
1275
1276 /* Don't do anything that will mess up processing of the
1277 * previous RSCN.
1278 */
1279 if (vport->fc_flag & FC_RSCN_DEFERRED)
1280 return ndlp->nlp_state;
1281
1282 /* software abort outstanding ADISC */
1283 lpfc_els_abort(phba, ndlp);
1284
1285 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1286 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1287 spin_lock_irq(shost->host_lock);
1288 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1289 spin_unlock_irq(shost->host_lock);
1290 lpfc_disc_set_adisc(vport, ndlp);
1291 return ndlp->nlp_state;
1292 }
1293
1294 static uint32_t
1295 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1296 struct lpfc_nodelist *ndlp,
1297 void *arg,
1298 uint32_t evt)
1299 {
1300 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1301
1302 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1303 return ndlp->nlp_state;
1304 }
1305
1306 static uint32_t
1307 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1308 struct lpfc_nodelist *ndlp,
1309 void *arg,
1310 uint32_t evt)
1311 {
1312 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1313
1314 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1315 return ndlp->nlp_state;
1316 }
1317
1318 static uint32_t
1319 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1320 struct lpfc_nodelist *ndlp,
1321 void *arg,
1322 uint32_t evt)
1323 {
1324 struct lpfc_hba *phba = vport->phba;
1325 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1326 LPFC_MBOXQ_t *mb;
1327 LPFC_MBOXQ_t *nextmb;
1328 struct lpfc_dmabuf *mp;
1329
1330 cmdiocb = (struct lpfc_iocbq *) arg;
1331
1332 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1333 if ((mb = phba->sli.mbox_active)) {
1334 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1335 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1336 lpfc_nlp_put(ndlp);
1337 mb->context2 = NULL;
1338 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1339 }
1340 }
1341
1342 spin_lock_irq(&phba->hbalock);
1343 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1344 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1345 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1346 mp = (struct lpfc_dmabuf *) (mb->context1);
1347 if (mp) {
1348 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1349 kfree(mp);
1350 }
1351 lpfc_nlp_put(ndlp);
1352 list_del(&mb->list);
1353 phba->sli.mboxq_cnt--;
1354 mempool_free(mb, phba->mbox_mem_pool);
1355 }
1356 }
1357 spin_unlock_irq(&phba->hbalock);
1358
1359 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1360 return ndlp->nlp_state;
1361 }
1362
1363 static uint32_t
1364 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1365 struct lpfc_nodelist *ndlp,
1366 void *arg,
1367 uint32_t evt)
1368 {
1369 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1370
1371 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1372 return ndlp->nlp_state;
1373 }
1374
1375 static uint32_t
1376 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1377 struct lpfc_nodelist *ndlp,
1378 void *arg,
1379 uint32_t evt)
1380 {
1381 struct lpfc_iocbq *cmdiocb;
1382
1383 cmdiocb = (struct lpfc_iocbq *) arg;
1384 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1385 return ndlp->nlp_state;
1386 }
1387
1388 static uint32_t
1389 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1390 struct lpfc_nodelist *ndlp,
1391 void *arg,
1392 uint32_t evt)
1393 {
1394 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1395 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1396 MAILBOX_t *mb = &pmb->u.mb;
1397 uint32_t did = mb->un.varWords[1];
1398
1399 if (mb->mbxStatus) {
1400 /* RegLogin failed */
1401 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1402 "0246 RegLogin failed Data: x%x x%x x%x\n",
1403 did, mb->mbxStatus, vport->port_state);
1404 /*
1405 * If RegLogin failed due to lack of HBA resources do not
1406 * retry discovery.
1407 */
1408 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1409 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1410 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1411 return ndlp->nlp_state;
1412 }
1413
1414 /* Put ndlp in npr state set plogi timer for 1 sec */
1415 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1416 spin_lock_irq(shost->host_lock);
1417 ndlp->nlp_flag |= NLP_DELAY_TMO;
1418 spin_unlock_irq(shost->host_lock);
1419 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1420
1421 lpfc_issue_els_logo(vport, ndlp, 0);
1422 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1423 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1424 return ndlp->nlp_state;
1425 }
1426
1427 ndlp->nlp_rpi = mb->un.varWords[0];
1428 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1429
1430 /* Only if we are not a fabric nport do we issue PRLI */
1431 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1432 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1433 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1434 lpfc_issue_els_prli(vport, ndlp, 0);
1435 } else {
1436 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1437 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1438 }
1439 return ndlp->nlp_state;
1440 }
1441
1442 static uint32_t
1443 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1444 struct lpfc_nodelist *ndlp,
1445 void *arg,
1446 uint32_t evt)
1447 {
1448 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1449
1450 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1451 spin_lock_irq(shost->host_lock);
1452 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1453 spin_unlock_irq(shost->host_lock);
1454 return ndlp->nlp_state;
1455 } else {
1456 lpfc_drop_node(vport, ndlp);
1457 return NLP_STE_FREED_NODE;
1458 }
1459 }
1460
1461 static uint32_t
1462 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1463 struct lpfc_nodelist *ndlp,
1464 void *arg,
1465 uint32_t evt)
1466 {
1467 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1468
1469 /* Don't do anything that will mess up processing of the
1470 * previous RSCN.
1471 */
1472 if (vport->fc_flag & FC_RSCN_DEFERRED)
1473 return ndlp->nlp_state;
1474
1475 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1476 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1477 spin_lock_irq(shost->host_lock);
1478 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1479 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1480 spin_unlock_irq(shost->host_lock);
1481 lpfc_disc_set_adisc(vport, ndlp);
1482 return ndlp->nlp_state;
1483 }
1484
1485 static uint32_t
1486 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1487 void *arg, uint32_t evt)
1488 {
1489 struct lpfc_iocbq *cmdiocb;
1490
1491 cmdiocb = (struct lpfc_iocbq *) arg;
1492
1493 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1494 return ndlp->nlp_state;
1495 }
1496
1497 static uint32_t
1498 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1499 void *arg, uint32_t evt)
1500 {
1501 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1502
1503 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1504 return ndlp->nlp_state;
1505 }
1506
1507 static uint32_t
1508 lpfc_rcv_logo_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 /* Software abort outstanding PRLI before sending acc */
1514 lpfc_els_abort(vport->phba, ndlp);
1515
1516 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1517 return ndlp->nlp_state;
1518 }
1519
1520 static uint32_t
1521 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1522 void *arg, uint32_t evt)
1523 {
1524 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1525
1526 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1527 return ndlp->nlp_state;
1528 }
1529
1530 /* This routine is envoked when we rcv a PRLO request from a nport
1531 * we are logged into. We should send back a PRLO rsp setting the
1532 * appropriate bits.
1533 * NEXT STATE = PRLI_ISSUE
1534 */
1535 static uint32_t
1536 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1537 void *arg, uint32_t evt)
1538 {
1539 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1540
1541 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1542 return ndlp->nlp_state;
1543 }
1544
1545 static uint32_t
1546 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1547 void *arg, uint32_t evt)
1548 {
1549 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1550 struct lpfc_iocbq *cmdiocb, *rspiocb;
1551 struct lpfc_hba *phba = vport->phba;
1552 IOCB_t *irsp;
1553 PRLI *npr;
1554
1555 cmdiocb = (struct lpfc_iocbq *) arg;
1556 rspiocb = cmdiocb->context_un.rsp_iocb;
1557 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1558
1559 irsp = &rspiocb->iocb;
1560 if (irsp->ulpStatus) {
1561 if ((vport->port_type == LPFC_NPIV_PORT) &&
1562 vport->cfg_restrict_login) {
1563 goto out;
1564 }
1565 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1566 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1567 return ndlp->nlp_state;
1568 }
1569
1570 /* Check out PRLI rsp */
1571 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1572 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1573 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1574 (npr->prliType == PRLI_FCP_TYPE)) {
1575 if (npr->initiatorFunc)
1576 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1577 if (npr->targetFunc)
1578 ndlp->nlp_type |= NLP_FCP_TARGET;
1579 if (npr->Retry)
1580 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1581 }
1582 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1583 (vport->port_type == LPFC_NPIV_PORT) &&
1584 vport->cfg_restrict_login) {
1585 out:
1586 spin_lock_irq(shost->host_lock);
1587 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1588 spin_unlock_irq(shost->host_lock);
1589 lpfc_issue_els_logo(vport, ndlp, 0);
1590
1591 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1592 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1593 return ndlp->nlp_state;
1594 }
1595
1596 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1597 if (ndlp->nlp_type & NLP_FCP_TARGET)
1598 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1599 else
1600 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1601 return ndlp->nlp_state;
1602 }
1603
1604 /*! lpfc_device_rm_prli_issue
1605 *
1606 * \pre
1607 * \post
1608 * \param phba
1609 * \param ndlp
1610 * \param arg
1611 * \param evt
1612 * \return uint32_t
1613 *
1614 * \b Description:
1615 * This routine is envoked when we a request to remove a nport we are in the
1616 * process of PRLIing. We should software abort outstanding prli, unreg
1617 * login, send a logout. We will change node state to UNUSED_NODE, put it
1618 * on plogi list so it can be freed when LOGO completes.
1619 *
1620 */
1621
1622 static uint32_t
1623 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1624 void *arg, uint32_t evt)
1625 {
1626 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1627
1628 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1629 spin_lock_irq(shost->host_lock);
1630 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1631 spin_unlock_irq(shost->host_lock);
1632 return ndlp->nlp_state;
1633 } else {
1634 /* software abort outstanding PLOGI */
1635 lpfc_els_abort(vport->phba, ndlp);
1636
1637 lpfc_drop_node(vport, ndlp);
1638 return NLP_STE_FREED_NODE;
1639 }
1640 }
1641
1642
1643 /*! lpfc_device_recov_prli_issue
1644 *
1645 * \pre
1646 * \post
1647 * \param phba
1648 * \param ndlp
1649 * \param arg
1650 * \param evt
1651 * \return uint32_t
1652 *
1653 * \b Description:
1654 * The routine is envoked when the state of a device is unknown, like
1655 * during a link down. We should remove the nodelist entry from the
1656 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1657 * outstanding PRLI command, then free the node entry.
1658 */
1659 static uint32_t
1660 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1661 struct lpfc_nodelist *ndlp,
1662 void *arg,
1663 uint32_t evt)
1664 {
1665 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1666 struct lpfc_hba *phba = vport->phba;
1667
1668 /* Don't do anything that will mess up processing of the
1669 * previous RSCN.
1670 */
1671 if (vport->fc_flag & FC_RSCN_DEFERRED)
1672 return ndlp->nlp_state;
1673
1674 /* software abort outstanding PRLI */
1675 lpfc_els_abort(phba, ndlp);
1676
1677 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1678 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1679 spin_lock_irq(shost->host_lock);
1680 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1681 spin_unlock_irq(shost->host_lock);
1682 lpfc_disc_set_adisc(vport, ndlp);
1683 return ndlp->nlp_state;
1684 }
1685
1686 static uint32_t
1687 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1688 void *arg, uint32_t evt)
1689 {
1690 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1691
1692 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1693 return ndlp->nlp_state;
1694 }
1695
1696 static uint32_t
1697 lpfc_rcv_prli_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_prli(vport, ndlp, cmdiocb);
1703 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1704 return ndlp->nlp_state;
1705 }
1706
1707 static uint32_t
1708 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1709 void *arg, uint32_t evt)
1710 {
1711 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1712
1713 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1714 return ndlp->nlp_state;
1715 }
1716
1717 static uint32_t
1718 lpfc_rcv_padisc_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_padisc(vport, ndlp, cmdiocb);
1724 return ndlp->nlp_state;
1725 }
1726
1727 static uint32_t
1728 lpfc_rcv_prlo_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_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1734 return ndlp->nlp_state;
1735 }
1736
1737 static uint32_t
1738 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1739 struct lpfc_nodelist *ndlp,
1740 void *arg,
1741 uint32_t evt)
1742 {
1743 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1744
1745 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1746 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1747 spin_lock_irq(shost->host_lock);
1748 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1749 spin_unlock_irq(shost->host_lock);
1750 lpfc_disc_set_adisc(vport, ndlp);
1751
1752 return ndlp->nlp_state;
1753 }
1754
1755 static uint32_t
1756 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1757 void *arg, uint32_t evt)
1758 {
1759 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1760
1761 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1762 return ndlp->nlp_state;
1763 }
1764
1765 static uint32_t
1766 lpfc_rcv_prli_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_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1772 return ndlp->nlp_state;
1773 }
1774
1775 static uint32_t
1776 lpfc_rcv_logo_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_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1782 return ndlp->nlp_state;
1783 }
1784
1785 static uint32_t
1786 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1787 struct lpfc_nodelist *ndlp,
1788 void *arg, uint32_t evt)
1789 {
1790 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1791
1792 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1793 return ndlp->nlp_state;
1794 }
1795
1796 static uint32_t
1797 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1798 void *arg, uint32_t evt)
1799 {
1800 struct lpfc_hba *phba = vport->phba;
1801 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1802
1803 /* flush the target */
1804 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1805 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1806
1807 /* Treat like rcv logo */
1808 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1809 return ndlp->nlp_state;
1810 }
1811
1812 static uint32_t
1813 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1814 struct lpfc_nodelist *ndlp,
1815 void *arg,
1816 uint32_t evt)
1817 {
1818 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1819
1820 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1821 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1822 spin_lock_irq(shost->host_lock);
1823 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1824 spin_unlock_irq(shost->host_lock);
1825 lpfc_disc_set_adisc(vport, ndlp);
1826 return ndlp->nlp_state;
1827 }
1828
1829 static uint32_t
1830 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1831 void *arg, uint32_t evt)
1832 {
1833 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1834 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1835
1836 /* Ignore PLOGI if we have an outstanding LOGO */
1837 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1838 return ndlp->nlp_state;
1839 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1840 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1841 spin_lock_irq(shost->host_lock);
1842 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1843 spin_unlock_irq(shost->host_lock);
1844 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1845 /* send PLOGI immediately, move to PLOGI issue state */
1846 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1847 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1848 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1849 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1850 }
1851 }
1852 return ndlp->nlp_state;
1853 }
1854
1855 static uint32_t
1856 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1857 void *arg, uint32_t evt)
1858 {
1859 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1860 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1861 struct ls_rjt stat;
1862
1863 memset(&stat, 0, sizeof (struct ls_rjt));
1864 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1865 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1866 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1867
1868 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1869 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1870 spin_lock_irq(shost->host_lock);
1871 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1872 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1873 spin_unlock_irq(shost->host_lock);
1874 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1875 lpfc_issue_els_adisc(vport, ndlp, 0);
1876 } else {
1877 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1878 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1879 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1880 }
1881 }
1882 return ndlp->nlp_state;
1883 }
1884
1885 static uint32_t
1886 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1887 void *arg, uint32_t evt)
1888 {
1889 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1890
1891 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1892 return ndlp->nlp_state;
1893 }
1894
1895 static uint32_t
1896 lpfc_rcv_padisc_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_padisc(vport, ndlp, cmdiocb);
1902 /*
1903 * Do not start discovery if discovery is about to start
1904 * or discovery in progress for this node. Starting discovery
1905 * here will affect the counting of discovery threads.
1906 */
1907 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1908 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1909 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1910 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1911 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1912 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1913 lpfc_issue_els_adisc(vport, ndlp, 0);
1914 } else {
1915 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1916 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1917 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1918 }
1919 }
1920 return ndlp->nlp_state;
1921 }
1922
1923 static uint32_t
1924 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1925 void *arg, uint32_t evt)
1926 {
1927 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1928 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1929
1930 spin_lock_irq(shost->host_lock);
1931 ndlp->nlp_flag |= NLP_LOGO_ACC;
1932 spin_unlock_irq(shost->host_lock);
1933
1934 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1935
1936 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1937 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1938 spin_lock_irq(shost->host_lock);
1939 ndlp->nlp_flag |= NLP_DELAY_TMO;
1940 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1941 spin_unlock_irq(shost->host_lock);
1942 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1943 } else {
1944 spin_lock_irq(shost->host_lock);
1945 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1946 spin_unlock_irq(shost->host_lock);
1947 }
1948 return ndlp->nlp_state;
1949 }
1950
1951 static uint32_t
1952 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1953 void *arg, uint32_t evt)
1954 {
1955 struct lpfc_iocbq *cmdiocb, *rspiocb;
1956 IOCB_t *irsp;
1957
1958 cmdiocb = (struct lpfc_iocbq *) arg;
1959 rspiocb = cmdiocb->context_un.rsp_iocb;
1960
1961 irsp = &rspiocb->iocb;
1962 if (irsp->ulpStatus) {
1963 ndlp->nlp_flag |= NLP_DEFER_RM;
1964 return NLP_STE_FREED_NODE;
1965 }
1966 return ndlp->nlp_state;
1967 }
1968
1969 static uint32_t
1970 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1971 void *arg, uint32_t evt)
1972 {
1973 struct lpfc_iocbq *cmdiocb, *rspiocb;
1974 IOCB_t *irsp;
1975
1976 cmdiocb = (struct lpfc_iocbq *) arg;
1977 rspiocb = cmdiocb->context_un.rsp_iocb;
1978
1979 irsp = &rspiocb->iocb;
1980 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1981 lpfc_drop_node(vport, ndlp);
1982 return NLP_STE_FREED_NODE;
1983 }
1984 return ndlp->nlp_state;
1985 }
1986
1987 static uint32_t
1988 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1989 void *arg, uint32_t evt)
1990 {
1991 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1992 if (ndlp->nlp_DID == Fabric_DID) {
1993 spin_lock_irq(shost->host_lock);
1994 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1995 spin_unlock_irq(shost->host_lock);
1996 }
1997 lpfc_unreg_rpi(vport, ndlp);
1998 return ndlp->nlp_state;
1999 }
2000
2001 static uint32_t
2002 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2003 void *arg, uint32_t evt)
2004 {
2005 struct lpfc_iocbq *cmdiocb, *rspiocb;
2006 IOCB_t *irsp;
2007
2008 cmdiocb = (struct lpfc_iocbq *) arg;
2009 rspiocb = cmdiocb->context_un.rsp_iocb;
2010
2011 irsp = &rspiocb->iocb;
2012 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2013 lpfc_drop_node(vport, ndlp);
2014 return NLP_STE_FREED_NODE;
2015 }
2016 return ndlp->nlp_state;
2017 }
2018
2019 static uint32_t
2020 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2021 struct lpfc_nodelist *ndlp,
2022 void *arg, uint32_t evt)
2023 {
2024 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2025 MAILBOX_t *mb = &pmb->u.mb;
2026
2027 if (!mb->mbxStatus) {
2028 ndlp->nlp_rpi = mb->un.varWords[0];
2029 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2030 } else {
2031 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2032 lpfc_drop_node(vport, ndlp);
2033 return NLP_STE_FREED_NODE;
2034 }
2035 }
2036 return ndlp->nlp_state;
2037 }
2038
2039 static uint32_t
2040 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2041 void *arg, uint32_t evt)
2042 {
2043 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2044
2045 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2046 spin_lock_irq(shost->host_lock);
2047 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2048 spin_unlock_irq(shost->host_lock);
2049 return ndlp->nlp_state;
2050 }
2051 lpfc_drop_node(vport, ndlp);
2052 return NLP_STE_FREED_NODE;
2053 }
2054
2055 static uint32_t
2056 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2057 void *arg, uint32_t evt)
2058 {
2059 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2060
2061 /* Don't do anything that will mess up processing of the
2062 * previous RSCN.
2063 */
2064 if (vport->fc_flag & FC_RSCN_DEFERRED)
2065 return ndlp->nlp_state;
2066
2067 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2068 spin_lock_irq(shost->host_lock);
2069 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2070 spin_unlock_irq(shost->host_lock);
2071 return ndlp->nlp_state;
2072 }
2073
2074
2075 /* This next section defines the NPort Discovery State Machine */
2076
2077 /* There are 4 different double linked lists nodelist entries can reside on.
2078 * The plogi list and adisc list are used when Link Up discovery or RSCN
2079 * processing is needed. Each list holds the nodes that we will send PLOGI
2080 * or ADISC on. These lists will keep track of what nodes will be effected
2081 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2082 * The unmapped_list will contain all nodes that we have successfully logged
2083 * into at the Fibre Channel level. The mapped_list will contain all nodes
2084 * that are mapped FCP targets.
2085 */
2086 /*
2087 * The bind list is a list of undiscovered (potentially non-existent) nodes
2088 * that we have saved binding information on. This information is used when
2089 * nodes transition from the unmapped to the mapped list.
2090 */
2091 /* For UNUSED_NODE state, the node has just been allocated .
2092 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2093 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2094 * and put on the unmapped list. For ADISC processing, the node is taken off
2095 * the ADISC list and placed on either the mapped or unmapped list (depending
2096 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2097 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2098 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2099 * node, the node is taken off the unmapped list. The binding list is checked
2100 * for a valid binding, or a binding is automatically assigned. If binding
2101 * assignment is unsuccessful, the node is left on the unmapped list. If
2102 * binding assignment is successful, the associated binding list entry (if
2103 * any) is removed, and the node is placed on the mapped list.
2104 */
2105 /*
2106 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2107 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2108 * expire, all effected nodes will receive a DEVICE_RM event.
2109 */
2110 /*
2111 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2112 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2113 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2114 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2115 * we will first process the ADISC list. 32 entries are processed initially and
2116 * ADISC is initited for each one. Completions / Events for each node are
2117 * funnelled thru the state machine. As each node finishes ADISC processing, it
2118 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2119 * waiting, and the ADISC list count is identically 0, then we are done. For
2120 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2121 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2122 * list. 32 entries are processed initially and PLOGI is initited for each one.
2123 * Completions / Events for each node are funnelled thru the state machine. As
2124 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2125 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2126 * indentically 0, then we are done. We have now completed discovery / RSCN
2127 * handling. Upon completion, ALL nodes should be on either the mapped or
2128 * unmapped lists.
2129 */
2130
2131 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2132 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2133 /* Action routine Event Current State */
2134 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2135 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2136 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2137 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2138 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2139 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2140 lpfc_disc_illegal, /* CMPL_PLOGI */
2141 lpfc_disc_illegal, /* CMPL_PRLI */
2142 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2143 lpfc_disc_illegal, /* CMPL_ADISC */
2144 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2145 lpfc_device_rm_unused_node, /* DEVICE_RM */
2146 lpfc_disc_illegal, /* DEVICE_RECOVERY */
2147
2148 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2149 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2150 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2151 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2152 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2153 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2154 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2155 lpfc_disc_illegal, /* CMPL_PRLI */
2156 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2157 lpfc_disc_illegal, /* CMPL_ADISC */
2158 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2159 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2160 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2161
2162 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2163 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2164 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2165 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2166 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2167 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2168 lpfc_disc_illegal, /* CMPL_PLOGI */
2169 lpfc_disc_illegal, /* CMPL_PRLI */
2170 lpfc_disc_illegal, /* CMPL_LOGO */
2171 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2172 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2173 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2174 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2175
2176 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2177 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2178 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2179 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2180 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2181 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2182 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2183 lpfc_disc_illegal, /* CMPL_PRLI */
2184 lpfc_disc_illegal, /* CMPL_LOGO */
2185 lpfc_disc_illegal, /* CMPL_ADISC */
2186 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2187 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2188 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2189
2190 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2191 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2192 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2193 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2194 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2195 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2196 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2197 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2198 lpfc_disc_illegal, /* CMPL_LOGO */
2199 lpfc_disc_illegal, /* CMPL_ADISC */
2200 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2201 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2202 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2203
2204 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2205 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2206 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2207 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2208 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2209 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2210 lpfc_disc_illegal, /* CMPL_PLOGI */
2211 lpfc_disc_illegal, /* CMPL_PRLI */
2212 lpfc_disc_illegal, /* CMPL_LOGO */
2213 lpfc_disc_illegal, /* CMPL_ADISC */
2214 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2215 lpfc_disc_illegal, /* DEVICE_RM */
2216 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2217
2218 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2219 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2220 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2221 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2222 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2223 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2224 lpfc_disc_illegal, /* CMPL_PLOGI */
2225 lpfc_disc_illegal, /* CMPL_PRLI */
2226 lpfc_disc_illegal, /* CMPL_LOGO */
2227 lpfc_disc_illegal, /* CMPL_ADISC */
2228 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2229 lpfc_disc_illegal, /* DEVICE_RM */
2230 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2231
2232 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2233 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2234 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2235 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2236 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2237 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2238 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2239 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2240 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2241 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2242 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2243 lpfc_device_rm_npr_node, /* DEVICE_RM */
2244 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2245 };
2246
2247 int
2248 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2249 void *arg, uint32_t evt)
2250 {
2251 uint32_t cur_state, rc;
2252 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2253 uint32_t);
2254 uint32_t got_ndlp = 0;
2255
2256 if (lpfc_nlp_get(ndlp))
2257 got_ndlp = 1;
2258
2259 cur_state = ndlp->nlp_state;
2260
2261 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2262 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2263 "0211 DSM in event x%x on NPort x%x in "
2264 "state %d Data: x%x\n",
2265 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2266
2267 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2268 "DSM in: evt:%d ste:%d did:x%x",
2269 evt, cur_state, ndlp->nlp_DID);
2270
2271 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2272 rc = (func) (vport, ndlp, arg, evt);
2273
2274 /* DSM out state <rc> on NPort <nlp_DID> */
2275 if (got_ndlp) {
2276 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2277 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2278 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2279
2280 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2281 "DSM out: ste:%d did:x%x flg:x%x",
2282 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2283 /* Decrement the ndlp reference count held for this function */
2284 lpfc_nlp_put(ndlp);
2285 } else {
2286 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2287 "0213 DSM out state %d on NPort free\n", rc);
2288
2289 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2290 "DSM out: ste:%d did:x%x flg:x%x",
2291 rc, 0, 0);
2292 }
2293
2294 return rc;
2295 }