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[SCSI] lpfc 8.3.2 : Addition of SLI4 Interface - Base Support
[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/interrupt.h>
25
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_device.h>
28 #include <scsi/scsi_host.h>
29 #include <scsi/scsi_transport_fc.h>
30
31 #include "lpfc_hw4.h"
32 #include "lpfc_hw.h"
33 #include "lpfc_sli.h"
34 #include "lpfc_sli4.h"
35 #include "lpfc_nl.h"
36 #include "lpfc_disc.h"
37 #include "lpfc_scsi.h"
38 #include "lpfc.h"
39 #include "lpfc_logmsg.h"
40 #include "lpfc_crtn.h"
41 #include "lpfc_vport.h"
42 #include "lpfc_debugfs.h"
43
44
45 /* Called to verify a rcv'ed ADISC was intended for us. */
46 static int
47 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
48 struct lpfc_name *nn, struct lpfc_name *pn)
49 {
50 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
51 * table entry for that node.
52 */
53 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
54 return 0;
55
56 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
57 return 0;
58
59 /* we match, return success */
60 return 1;
61 }
62
63 int
64 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
65 struct serv_parm * sp, uint32_t class)
66 {
67 volatile struct serv_parm *hsp = &vport->fc_sparam;
68 uint16_t hsp_value, ssp_value = 0;
69
70 /*
71 * The receive data field size and buffer-to-buffer receive data field
72 * size entries are 16 bits but are represented as two 8-bit fields in
73 * the driver data structure to account for rsvd bits and other control
74 * bits. Reconstruct and compare the fields as a 16-bit values before
75 * correcting the byte values.
76 */
77 if (sp->cls1.classValid) {
78 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
79 hsp->cls1.rcvDataSizeLsb;
80 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
81 sp->cls1.rcvDataSizeLsb;
82 if (!ssp_value)
83 goto bad_service_param;
84 if (ssp_value > hsp_value) {
85 sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
86 sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
87 }
88 } else if (class == CLASS1) {
89 goto bad_service_param;
90 }
91
92 if (sp->cls2.classValid) {
93 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
94 hsp->cls2.rcvDataSizeLsb;
95 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
96 sp->cls2.rcvDataSizeLsb;
97 if (!ssp_value)
98 goto bad_service_param;
99 if (ssp_value > hsp_value) {
100 sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
101 sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
102 }
103 } else if (class == CLASS2) {
104 goto bad_service_param;
105 }
106
107 if (sp->cls3.classValid) {
108 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
109 hsp->cls3.rcvDataSizeLsb;
110 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
111 sp->cls3.rcvDataSizeLsb;
112 if (!ssp_value)
113 goto bad_service_param;
114 if (ssp_value > hsp_value) {
115 sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
116 sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
117 }
118 } else if (class == CLASS3) {
119 goto bad_service_param;
120 }
121
122 /*
123 * Preserve the upper four bits of the MSB from the PLOGI response.
124 * These bits contain the Buffer-to-Buffer State Change Number
125 * from the target and need to be passed to the FW.
126 */
127 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
128 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
129 if (ssp_value > hsp_value) {
130 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
131 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
132 (hsp->cmn.bbRcvSizeMsb & 0x0F);
133 }
134
135 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
136 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
137 return 1;
138 bad_service_param:
139 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
140 "0207 Device %x "
141 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
142 "invalid service parameters. Ignoring device.\n",
143 ndlp->nlp_DID,
144 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
145 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
146 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
147 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
148 return 0;
149 }
150
151 static void *
152 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
153 struct lpfc_iocbq *rspiocb)
154 {
155 struct lpfc_dmabuf *pcmd, *prsp;
156 uint32_t *lp;
157 void *ptr = NULL;
158 IOCB_t *irsp;
159
160 irsp = &rspiocb->iocb;
161 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
162
163 /* For lpfc_els_abort, context2 could be zero'ed to delay
164 * freeing associated memory till after ABTS completes.
165 */
166 if (pcmd) {
167 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
168 list);
169 if (prsp) {
170 lp = (uint32_t *) prsp->virt;
171 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
172 }
173 } else {
174 /* Force ulpStatus error since we are returning NULL ptr */
175 if (!(irsp->ulpStatus)) {
176 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
177 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
178 }
179 ptr = NULL;
180 }
181 return ptr;
182 }
183
184
185 /*
186 * Free resources / clean up outstanding I/Os
187 * associated with a LPFC_NODELIST entry. This
188 * routine effectively results in a "software abort".
189 */
190 int
191 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
192 {
193 LIST_HEAD(completions);
194 struct lpfc_sli *psli = &phba->sli;
195 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
196 struct lpfc_iocbq *iocb, *next_iocb;
197
198 /* Abort outstanding I/O on NPort <nlp_DID> */
199 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
200 "0205 Abort outstanding I/O on NPort x%x "
201 "Data: x%x x%x x%x\n",
202 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
203 ndlp->nlp_rpi);
204
205 lpfc_fabric_abort_nport(ndlp);
206
207 /* First check the txq */
208 spin_lock_irq(&phba->hbalock);
209 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
210 /* Check to see if iocb matches the nport we are looking for */
211 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
212 /* It matches, so deque and call compl with anp error */
213 list_move_tail(&iocb->list, &completions);
214 pring->txq_cnt--;
215 }
216 }
217
218 /* Next check the txcmplq */
219 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
220 /* Check to see if iocb matches the nport we are looking for */
221 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
222 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
223 }
224 }
225 spin_unlock_irq(&phba->hbalock);
226
227 /* Cancel all the IOCBs from the completions list */
228 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
229 IOERR_SLI_ABORTED);
230
231 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
232 return 0;
233 }
234
235 static int
236 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
237 struct lpfc_iocbq *cmdiocb)
238 {
239 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
240 struct lpfc_hba *phba = vport->phba;
241 struct lpfc_dmabuf *pcmd;
242 uint32_t *lp;
243 IOCB_t *icmd;
244 struct serv_parm *sp;
245 LPFC_MBOXQ_t *mbox;
246 struct ls_rjt stat;
247 int rc;
248
249 memset(&stat, 0, sizeof (struct ls_rjt));
250 if (vport->port_state <= LPFC_FLOGI) {
251 /* Before responding to PLOGI, check for pt2pt mode.
252 * If we are pt2pt, with an outstanding FLOGI, abort
253 * the FLOGI and resend it first.
254 */
255 if (vport->fc_flag & FC_PT2PT) {
256 lpfc_els_abort_flogi(phba);
257 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
258 /* If the other side is supposed to initiate
259 * the PLOGI anyway, just ACC it now and
260 * move on with discovery.
261 */
262 phba->fc_edtov = FF_DEF_EDTOV;
263 phba->fc_ratov = FF_DEF_RATOV;
264 /* Start discovery - this should just do
265 CLEAR_LA */
266 lpfc_disc_start(vport);
267 } else
268 lpfc_initial_flogi(vport);
269 } else {
270 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
271 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
272 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
273 ndlp, NULL);
274 return 0;
275 }
276 }
277 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
278 lp = (uint32_t *) pcmd->virt;
279 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
280 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
281 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
282 "0140 PLOGI Reject: invalid nname\n");
283 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
284 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
285 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
286 NULL);
287 return 0;
288 }
289 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
290 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
291 "0141 PLOGI Reject: invalid pname\n");
292 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
293 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
294 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
295 NULL);
296 return 0;
297 }
298 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3) == 0)) {
299 /* Reject this request because invalid parameters */
300 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
301 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
302 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
303 NULL);
304 return 0;
305 }
306 icmd = &cmdiocb->iocb;
307
308 /* PLOGI chkparm OK */
309 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
310 "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
311 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
312 ndlp->nlp_rpi);
313
314 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
315 ndlp->nlp_fcp_info |= CLASS2;
316 else
317 ndlp->nlp_fcp_info |= CLASS3;
318
319 ndlp->nlp_class_sup = 0;
320 if (sp->cls1.classValid)
321 ndlp->nlp_class_sup |= FC_COS_CLASS1;
322 if (sp->cls2.classValid)
323 ndlp->nlp_class_sup |= FC_COS_CLASS2;
324 if (sp->cls3.classValid)
325 ndlp->nlp_class_sup |= FC_COS_CLASS3;
326 if (sp->cls4.classValid)
327 ndlp->nlp_class_sup |= FC_COS_CLASS4;
328 ndlp->nlp_maxframe =
329 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
330
331 /* no need to reg_login if we are already in one of these states */
332 switch (ndlp->nlp_state) {
333 case NLP_STE_NPR_NODE:
334 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
335 break;
336 case NLP_STE_REG_LOGIN_ISSUE:
337 case NLP_STE_PRLI_ISSUE:
338 case NLP_STE_UNMAPPED_NODE:
339 case NLP_STE_MAPPED_NODE:
340 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
341 return 1;
342 }
343
344 if ((vport->fc_flag & FC_PT2PT) &&
345 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
346 /* rcv'ed PLOGI decides what our NPortId will be */
347 vport->fc_myDID = icmd->un.rcvels.parmRo;
348 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
349 if (mbox == NULL)
350 goto out;
351 lpfc_config_link(phba, mbox);
352 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
353 mbox->vport = vport;
354 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
355 if (rc == MBX_NOT_FINISHED) {
356 mempool_free(mbox, phba->mbox_mem_pool);
357 goto out;
358 }
359
360 lpfc_can_disctmo(vport);
361 }
362 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
363 if (!mbox)
364 goto out;
365
366 rc = lpfc_reg_login(phba, vport->vpi, icmd->un.rcvels.remoteID,
367 (uint8_t *) sp, mbox, 0);
368 if (rc) {
369 mempool_free(mbox, phba->mbox_mem_pool);
370 goto out;
371 }
372
373 /* ACC PLOGI rsp command needs to execute first,
374 * queue this mbox command to be processed later.
375 */
376 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
377 /*
378 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
379 * command issued in lpfc_cmpl_els_acc().
380 */
381 mbox->vport = vport;
382 spin_lock_irq(shost->host_lock);
383 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
384 spin_unlock_irq(shost->host_lock);
385
386 /*
387 * If there is an outstanding PLOGI issued, abort it before
388 * sending ACC rsp for received PLOGI. If pending plogi
389 * is not canceled here, the plogi will be rejected by
390 * remote port and will be retried. On a configuration with
391 * single discovery thread, this will cause a huge delay in
392 * discovery. Also this will cause multiple state machines
393 * running in parallel for this node.
394 */
395 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
396 /* software abort outstanding PLOGI */
397 lpfc_els_abort(phba, ndlp);
398 }
399
400 if ((vport->port_type == LPFC_NPIV_PORT &&
401 vport->cfg_restrict_login)) {
402
403 /* In order to preserve RPIs, we want to cleanup
404 * the default RPI the firmware created to rcv
405 * this ELS request. The only way to do this is
406 * to register, then unregister the RPI.
407 */
408 spin_lock_irq(shost->host_lock);
409 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
410 spin_unlock_irq(shost->host_lock);
411 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
412 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
413 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
414 ndlp, mbox);
415 return 1;
416 }
417 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
418 return 1;
419 out:
420 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
421 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
422 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
423 return 0;
424 }
425
426 static int
427 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
428 struct lpfc_iocbq *cmdiocb)
429 {
430 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
431 struct lpfc_dmabuf *pcmd;
432 struct serv_parm *sp;
433 struct lpfc_name *pnn, *ppn;
434 struct ls_rjt stat;
435 ADISC *ap;
436 IOCB_t *icmd;
437 uint32_t *lp;
438 uint32_t cmd;
439
440 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
441 lp = (uint32_t *) pcmd->virt;
442
443 cmd = *lp++;
444 if (cmd == ELS_CMD_ADISC) {
445 ap = (ADISC *) lp;
446 pnn = (struct lpfc_name *) & ap->nodeName;
447 ppn = (struct lpfc_name *) & ap->portName;
448 } else {
449 sp = (struct serv_parm *) lp;
450 pnn = (struct lpfc_name *) & sp->nodeName;
451 ppn = (struct lpfc_name *) & sp->portName;
452 }
453
454 icmd = &cmdiocb->iocb;
455 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
456 if (cmd == ELS_CMD_ADISC) {
457 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
458 } else {
459 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
460 NULL);
461 }
462 return 1;
463 }
464 /* Reject this request because invalid parameters */
465 stat.un.b.lsRjtRsvd0 = 0;
466 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
467 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
468 stat.un.b.vendorUnique = 0;
469 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
470
471 /* 1 sec timeout */
472 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
473
474 spin_lock_irq(shost->host_lock);
475 ndlp->nlp_flag |= NLP_DELAY_TMO;
476 spin_unlock_irq(shost->host_lock);
477 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
478 ndlp->nlp_prev_state = ndlp->nlp_state;
479 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
480 return 0;
481 }
482
483 static int
484 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
485 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
486 {
487 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
488
489 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
490 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
491 * PLOGIs during LOGO storms from a device.
492 */
493 spin_lock_irq(shost->host_lock);
494 ndlp->nlp_flag |= NLP_LOGO_ACC;
495 spin_unlock_irq(shost->host_lock);
496 if (els_cmd == ELS_CMD_PRLO)
497 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
498 else
499 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
500
501 if ((!(ndlp->nlp_type & NLP_FABRIC) &&
502 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
503 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
504 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
505 /* Only try to re-login if this is NOT a Fabric Node */
506 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
507 spin_lock_irq(shost->host_lock);
508 ndlp->nlp_flag |= NLP_DELAY_TMO;
509 spin_unlock_irq(shost->host_lock);
510
511 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
512 }
513 ndlp->nlp_prev_state = ndlp->nlp_state;
514 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
515
516 spin_lock_irq(shost->host_lock);
517 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
518 spin_unlock_irq(shost->host_lock);
519 /* The driver has to wait until the ACC completes before it continues
520 * processing the LOGO. The action will resume in
521 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
522 * unreg_login, the driver waits so the ACC does not get aborted.
523 */
524 return 0;
525 }
526
527 static void
528 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
529 struct lpfc_iocbq *cmdiocb)
530 {
531 struct lpfc_dmabuf *pcmd;
532 uint32_t *lp;
533 PRLI *npr;
534 struct fc_rport *rport = ndlp->rport;
535 u32 roles;
536
537 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
538 lp = (uint32_t *) pcmd->virt;
539 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
540
541 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
542 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
543 if (npr->prliType == PRLI_FCP_TYPE) {
544 if (npr->initiatorFunc)
545 ndlp->nlp_type |= NLP_FCP_INITIATOR;
546 if (npr->targetFunc)
547 ndlp->nlp_type |= NLP_FCP_TARGET;
548 if (npr->Retry)
549 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
550 }
551 if (rport) {
552 /* We need to update the rport role values */
553 roles = FC_RPORT_ROLE_UNKNOWN;
554 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
555 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
556 if (ndlp->nlp_type & NLP_FCP_TARGET)
557 roles |= FC_RPORT_ROLE_FCP_TARGET;
558
559 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
560 "rport rolechg: role:x%x did:x%x flg:x%x",
561 roles, ndlp->nlp_DID, ndlp->nlp_flag);
562
563 fc_remote_port_rolechg(rport, roles);
564 }
565 }
566
567 static uint32_t
568 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
569 {
570 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
571
572 if (!ndlp->nlp_rpi) {
573 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
574 return 0;
575 }
576
577 if (!(vport->fc_flag & FC_PT2PT)) {
578 /* Check config parameter use-adisc or FCP-2 */
579 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
580 ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
581 spin_lock_irq(shost->host_lock);
582 ndlp->nlp_flag |= NLP_NPR_ADISC;
583 spin_unlock_irq(shost->host_lock);
584 return 1;
585 }
586 }
587 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
588 lpfc_unreg_rpi(vport, ndlp);
589 return 0;
590 }
591
592 static uint32_t
593 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
594 void *arg, uint32_t evt)
595 {
596 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
597 "0271 Illegal State Transition: node x%x "
598 "event x%x, state x%x Data: x%x x%x\n",
599 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
600 ndlp->nlp_flag);
601 return ndlp->nlp_state;
602 }
603
604 static uint32_t
605 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
606 void *arg, uint32_t evt)
607 {
608 /* This transition is only legal if we previously
609 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
610 * working on the same NPortID, do nothing for this thread
611 * to stop it.
612 */
613 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
614 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
615 "0272 Illegal State Transition: node x%x "
616 "event x%x, state x%x Data: x%x x%x\n",
617 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
618 ndlp->nlp_flag);
619 }
620 return ndlp->nlp_state;
621 }
622
623 /* Start of Discovery State Machine routines */
624
625 static uint32_t
626 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
627 void *arg, uint32_t evt)
628 {
629 struct lpfc_iocbq *cmdiocb;
630
631 cmdiocb = (struct lpfc_iocbq *) arg;
632
633 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
634 return ndlp->nlp_state;
635 }
636 return NLP_STE_FREED_NODE;
637 }
638
639 static uint32_t
640 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
641 void *arg, uint32_t evt)
642 {
643 lpfc_issue_els_logo(vport, ndlp, 0);
644 return ndlp->nlp_state;
645 }
646
647 static uint32_t
648 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
649 void *arg, uint32_t evt)
650 {
651 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
652 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
653
654 spin_lock_irq(shost->host_lock);
655 ndlp->nlp_flag |= NLP_LOGO_ACC;
656 spin_unlock_irq(shost->host_lock);
657 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
658
659 return ndlp->nlp_state;
660 }
661
662 static uint32_t
663 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
664 void *arg, uint32_t evt)
665 {
666 return NLP_STE_FREED_NODE;
667 }
668
669 static uint32_t
670 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
671 void *arg, uint32_t evt)
672 {
673 return NLP_STE_FREED_NODE;
674 }
675
676 static uint32_t
677 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
678 void *arg, uint32_t evt)
679 {
680 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
681 struct lpfc_hba *phba = vport->phba;
682 struct lpfc_iocbq *cmdiocb = arg;
683 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
684 uint32_t *lp = (uint32_t *) pcmd->virt;
685 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
686 struct ls_rjt stat;
687 int port_cmp;
688
689 memset(&stat, 0, sizeof (struct ls_rjt));
690
691 /* For a PLOGI, we only accept if our portname is less
692 * than the remote portname.
693 */
694 phba->fc_stat.elsLogiCol++;
695 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
696 sizeof(struct lpfc_name));
697
698 if (port_cmp >= 0) {
699 /* Reject this request because the remote node will accept
700 ours */
701 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
702 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
703 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
704 NULL);
705 } else {
706 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
707 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
708 (vport->num_disc_nodes)) {
709 spin_lock_irq(shost->host_lock);
710 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
711 spin_unlock_irq(shost->host_lock);
712 /* Check if there are more PLOGIs to be sent */
713 lpfc_more_plogi(vport);
714 if (vport->num_disc_nodes == 0) {
715 spin_lock_irq(shost->host_lock);
716 vport->fc_flag &= ~FC_NDISC_ACTIVE;
717 spin_unlock_irq(shost->host_lock);
718 lpfc_can_disctmo(vport);
719 lpfc_end_rscn(vport);
720 }
721 }
722 } /* If our portname was less */
723
724 return ndlp->nlp_state;
725 }
726
727 static uint32_t
728 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
729 void *arg, uint32_t evt)
730 {
731 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
732 struct ls_rjt stat;
733
734 memset(&stat, 0, sizeof (struct ls_rjt));
735 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
736 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
737 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
738 return ndlp->nlp_state;
739 }
740
741 static uint32_t
742 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
743 void *arg, uint32_t evt)
744 {
745 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
746
747 /* software abort outstanding PLOGI */
748 lpfc_els_abort(vport->phba, ndlp);
749
750 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
751 return ndlp->nlp_state;
752 }
753
754 static uint32_t
755 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
756 void *arg, uint32_t evt)
757 {
758 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
759 struct lpfc_hba *phba = vport->phba;
760 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
761
762 /* software abort outstanding PLOGI */
763 lpfc_els_abort(phba, ndlp);
764
765 if (evt == NLP_EVT_RCV_LOGO) {
766 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
767 } else {
768 lpfc_issue_els_logo(vport, ndlp, 0);
769 }
770
771 /* Put ndlp in npr state set plogi timer for 1 sec */
772 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
773 spin_lock_irq(shost->host_lock);
774 ndlp->nlp_flag |= NLP_DELAY_TMO;
775 spin_unlock_irq(shost->host_lock);
776 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
777 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
778 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
779
780 return ndlp->nlp_state;
781 }
782
783 static uint32_t
784 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
785 struct lpfc_nodelist *ndlp,
786 void *arg,
787 uint32_t evt)
788 {
789 struct lpfc_hba *phba = vport->phba;
790 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
791 struct lpfc_iocbq *cmdiocb, *rspiocb;
792 struct lpfc_dmabuf *pcmd, *prsp, *mp;
793 uint32_t *lp;
794 IOCB_t *irsp;
795 struct serv_parm *sp;
796 LPFC_MBOXQ_t *mbox;
797
798 cmdiocb = (struct lpfc_iocbq *) arg;
799 rspiocb = cmdiocb->context_un.rsp_iocb;
800
801 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
802 /* Recovery from PLOGI collision logic */
803 return ndlp->nlp_state;
804 }
805
806 irsp = &rspiocb->iocb;
807
808 if (irsp->ulpStatus)
809 goto out;
810
811 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
812
813 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
814
815 lp = (uint32_t *) prsp->virt;
816 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
817
818 /* Some switches have FDMI servers returning 0 for WWN */
819 if ((ndlp->nlp_DID != FDMI_DID) &&
820 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
821 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
822 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
823 "0142 PLOGI RSP: Invalid WWN.\n");
824 goto out;
825 }
826 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3))
827 goto out;
828 /* PLOGI chkparm OK */
829 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
830 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
831 ndlp->nlp_DID, ndlp->nlp_state,
832 ndlp->nlp_flag, ndlp->nlp_rpi);
833 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
834 ndlp->nlp_fcp_info |= CLASS2;
835 else
836 ndlp->nlp_fcp_info |= CLASS3;
837
838 ndlp->nlp_class_sup = 0;
839 if (sp->cls1.classValid)
840 ndlp->nlp_class_sup |= FC_COS_CLASS1;
841 if (sp->cls2.classValid)
842 ndlp->nlp_class_sup |= FC_COS_CLASS2;
843 if (sp->cls3.classValid)
844 ndlp->nlp_class_sup |= FC_COS_CLASS3;
845 if (sp->cls4.classValid)
846 ndlp->nlp_class_sup |= FC_COS_CLASS4;
847 ndlp->nlp_maxframe =
848 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
849
850 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
851 if (!mbox) {
852 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
853 "0133 PLOGI: no memory for reg_login "
854 "Data: x%x x%x x%x x%x\n",
855 ndlp->nlp_DID, ndlp->nlp_state,
856 ndlp->nlp_flag, ndlp->nlp_rpi);
857 goto out;
858 }
859
860 lpfc_unreg_rpi(vport, ndlp);
861
862 if (lpfc_reg_login(phba, vport->vpi, irsp->un.elsreq64.remoteID,
863 (uint8_t *) sp, mbox, 0) == 0) {
864 switch (ndlp->nlp_DID) {
865 case NameServer_DID:
866 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
867 break;
868 case FDMI_DID:
869 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
870 break;
871 default:
872 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
873 }
874 mbox->context2 = lpfc_nlp_get(ndlp);
875 mbox->vport = vport;
876 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
877 != MBX_NOT_FINISHED) {
878 lpfc_nlp_set_state(vport, ndlp,
879 NLP_STE_REG_LOGIN_ISSUE);
880 return ndlp->nlp_state;
881 }
882 /* decrement node reference count to the failed mbox
883 * command
884 */
885 lpfc_nlp_put(ndlp);
886 mp = (struct lpfc_dmabuf *) mbox->context1;
887 lpfc_mbuf_free(phba, mp->virt, mp->phys);
888 kfree(mp);
889 mempool_free(mbox, phba->mbox_mem_pool);
890
891 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
892 "0134 PLOGI: cannot issue reg_login "
893 "Data: x%x x%x x%x x%x\n",
894 ndlp->nlp_DID, ndlp->nlp_state,
895 ndlp->nlp_flag, ndlp->nlp_rpi);
896 } else {
897 mempool_free(mbox, phba->mbox_mem_pool);
898
899 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
900 "0135 PLOGI: cannot format reg_login "
901 "Data: x%x x%x x%x x%x\n",
902 ndlp->nlp_DID, ndlp->nlp_state,
903 ndlp->nlp_flag, ndlp->nlp_rpi);
904 }
905
906
907 out:
908 if (ndlp->nlp_DID == NameServer_DID) {
909 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
910 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
911 "0261 Cannot Register NameServer login\n");
912 }
913
914 spin_lock_irq(shost->host_lock);
915 ndlp->nlp_flag |= NLP_DEFER_RM;
916 spin_unlock_irq(shost->host_lock);
917 return NLP_STE_FREED_NODE;
918 }
919
920 static uint32_t
921 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
922 void *arg, uint32_t evt)
923 {
924 return ndlp->nlp_state;
925 }
926
927 static uint32_t
928 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
929 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
930 {
931 return ndlp->nlp_state;
932 }
933
934 static uint32_t
935 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
936 void *arg, uint32_t evt)
937 {
938 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
939
940 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
941 spin_lock_irq(shost->host_lock);
942 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
943 spin_unlock_irq(shost->host_lock);
944 return ndlp->nlp_state;
945 } else {
946 /* software abort outstanding PLOGI */
947 lpfc_els_abort(vport->phba, ndlp);
948
949 lpfc_drop_node(vport, ndlp);
950 return NLP_STE_FREED_NODE;
951 }
952 }
953
954 static uint32_t
955 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
956 struct lpfc_nodelist *ndlp,
957 void *arg,
958 uint32_t evt)
959 {
960 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
961 struct lpfc_hba *phba = vport->phba;
962
963 /* Don't do anything that will mess up processing of the
964 * previous RSCN.
965 */
966 if (vport->fc_flag & FC_RSCN_DEFERRED)
967 return ndlp->nlp_state;
968
969 /* software abort outstanding PLOGI */
970 lpfc_els_abort(phba, ndlp);
971
972 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
973 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
974 spin_lock_irq(shost->host_lock);
975 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
976 spin_unlock_irq(shost->host_lock);
977
978 return ndlp->nlp_state;
979 }
980
981 static uint32_t
982 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
983 void *arg, uint32_t evt)
984 {
985 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
986 struct lpfc_hba *phba = vport->phba;
987 struct lpfc_iocbq *cmdiocb;
988
989 /* software abort outstanding ADISC */
990 lpfc_els_abort(phba, ndlp);
991
992 cmdiocb = (struct lpfc_iocbq *) arg;
993
994 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
995 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
996 spin_lock_irq(shost->host_lock);
997 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
998 spin_unlock_irq(shost->host_lock);
999 if (vport->num_disc_nodes)
1000 lpfc_more_adisc(vport);
1001 }
1002 return ndlp->nlp_state;
1003 }
1004 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1005 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1006 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1007
1008 return ndlp->nlp_state;
1009 }
1010
1011 static uint32_t
1012 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1013 void *arg, uint32_t evt)
1014 {
1015 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1016
1017 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1018 return ndlp->nlp_state;
1019 }
1020
1021 static uint32_t
1022 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1023 void *arg, uint32_t evt)
1024 {
1025 struct lpfc_hba *phba = vport->phba;
1026 struct lpfc_iocbq *cmdiocb;
1027
1028 cmdiocb = (struct lpfc_iocbq *) arg;
1029
1030 /* software abort outstanding ADISC */
1031 lpfc_els_abort(phba, ndlp);
1032
1033 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1034 return ndlp->nlp_state;
1035 }
1036
1037 static uint32_t
1038 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1039 struct lpfc_nodelist *ndlp,
1040 void *arg, uint32_t evt)
1041 {
1042 struct lpfc_iocbq *cmdiocb;
1043
1044 cmdiocb = (struct lpfc_iocbq *) arg;
1045
1046 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1047 return ndlp->nlp_state;
1048 }
1049
1050 static uint32_t
1051 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1052 void *arg, uint32_t evt)
1053 {
1054 struct lpfc_iocbq *cmdiocb;
1055
1056 cmdiocb = (struct lpfc_iocbq *) arg;
1057
1058 /* Treat like rcv logo */
1059 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1060 return ndlp->nlp_state;
1061 }
1062
1063 static uint32_t
1064 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1065 struct lpfc_nodelist *ndlp,
1066 void *arg, uint32_t evt)
1067 {
1068 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1069 struct lpfc_hba *phba = vport->phba;
1070 struct lpfc_iocbq *cmdiocb, *rspiocb;
1071 IOCB_t *irsp;
1072 ADISC *ap;
1073
1074 cmdiocb = (struct lpfc_iocbq *) arg;
1075 rspiocb = cmdiocb->context_un.rsp_iocb;
1076
1077 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1078 irsp = &rspiocb->iocb;
1079
1080 if ((irsp->ulpStatus) ||
1081 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1082 /* 1 sec timeout */
1083 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1084 spin_lock_irq(shost->host_lock);
1085 ndlp->nlp_flag |= NLP_DELAY_TMO;
1086 spin_unlock_irq(shost->host_lock);
1087 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1088
1089 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1090 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1091
1092 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1093 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1094 lpfc_unreg_rpi(vport, ndlp);
1095 return ndlp->nlp_state;
1096 }
1097
1098 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1099 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1100 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1101 } else {
1102 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1103 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1104 }
1105 return ndlp->nlp_state;
1106 }
1107
1108 static uint32_t
1109 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1110 void *arg, uint32_t evt)
1111 {
1112 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1113
1114 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1115 spin_lock_irq(shost->host_lock);
1116 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1117 spin_unlock_irq(shost->host_lock);
1118 return ndlp->nlp_state;
1119 } else {
1120 /* software abort outstanding ADISC */
1121 lpfc_els_abort(vport->phba, ndlp);
1122
1123 lpfc_drop_node(vport, ndlp);
1124 return NLP_STE_FREED_NODE;
1125 }
1126 }
1127
1128 static uint32_t
1129 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1130 struct lpfc_nodelist *ndlp,
1131 void *arg,
1132 uint32_t evt)
1133 {
1134 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1135 struct lpfc_hba *phba = vport->phba;
1136
1137 /* Don't do anything that will mess up processing of the
1138 * previous RSCN.
1139 */
1140 if (vport->fc_flag & FC_RSCN_DEFERRED)
1141 return ndlp->nlp_state;
1142
1143 /* software abort outstanding ADISC */
1144 lpfc_els_abort(phba, ndlp);
1145
1146 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1147 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1148 spin_lock_irq(shost->host_lock);
1149 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1150 spin_unlock_irq(shost->host_lock);
1151 lpfc_disc_set_adisc(vport, ndlp);
1152 return ndlp->nlp_state;
1153 }
1154
1155 static uint32_t
1156 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1157 struct lpfc_nodelist *ndlp,
1158 void *arg,
1159 uint32_t evt)
1160 {
1161 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1162
1163 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1164 return ndlp->nlp_state;
1165 }
1166
1167 static uint32_t
1168 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1169 struct lpfc_nodelist *ndlp,
1170 void *arg,
1171 uint32_t evt)
1172 {
1173 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1174
1175 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1176 return ndlp->nlp_state;
1177 }
1178
1179 static uint32_t
1180 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1181 struct lpfc_nodelist *ndlp,
1182 void *arg,
1183 uint32_t evt)
1184 {
1185 struct lpfc_hba *phba = vport->phba;
1186 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1187 LPFC_MBOXQ_t *mb;
1188 LPFC_MBOXQ_t *nextmb;
1189 struct lpfc_dmabuf *mp;
1190
1191 cmdiocb = (struct lpfc_iocbq *) arg;
1192
1193 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1194 if ((mb = phba->sli.mbox_active)) {
1195 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1196 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1197 lpfc_nlp_put(ndlp);
1198 mb->context2 = NULL;
1199 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1200 }
1201 }
1202
1203 spin_lock_irq(&phba->hbalock);
1204 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1205 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) &&
1206 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1207 mp = (struct lpfc_dmabuf *) (mb->context1);
1208 if (mp) {
1209 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1210 kfree(mp);
1211 }
1212 lpfc_nlp_put(ndlp);
1213 list_del(&mb->list);
1214 mempool_free(mb, phba->mbox_mem_pool);
1215 }
1216 }
1217 spin_unlock_irq(&phba->hbalock);
1218
1219 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1220 return ndlp->nlp_state;
1221 }
1222
1223 static uint32_t
1224 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1225 struct lpfc_nodelist *ndlp,
1226 void *arg,
1227 uint32_t evt)
1228 {
1229 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1230
1231 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1232 return ndlp->nlp_state;
1233 }
1234
1235 static uint32_t
1236 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1237 struct lpfc_nodelist *ndlp,
1238 void *arg,
1239 uint32_t evt)
1240 {
1241 struct lpfc_iocbq *cmdiocb;
1242
1243 cmdiocb = (struct lpfc_iocbq *) arg;
1244 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1245 return ndlp->nlp_state;
1246 }
1247
1248 static uint32_t
1249 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1250 struct lpfc_nodelist *ndlp,
1251 void *arg,
1252 uint32_t evt)
1253 {
1254 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1255 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1256 MAILBOX_t *mb = &pmb->mb;
1257 uint32_t did = mb->un.varWords[1];
1258
1259 if (mb->mbxStatus) {
1260 /* RegLogin failed */
1261 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1262 "0246 RegLogin failed Data: x%x x%x x%x\n",
1263 did, mb->mbxStatus, vport->port_state);
1264 /*
1265 * If RegLogin failed due to lack of HBA resources do not
1266 * retry discovery.
1267 */
1268 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1269 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1270 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1271 return ndlp->nlp_state;
1272 }
1273
1274 /* Put ndlp in npr state set plogi timer for 1 sec */
1275 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1276 spin_lock_irq(shost->host_lock);
1277 ndlp->nlp_flag |= NLP_DELAY_TMO;
1278 spin_unlock_irq(shost->host_lock);
1279 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1280
1281 lpfc_issue_els_logo(vport, ndlp, 0);
1282 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1283 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1284 return ndlp->nlp_state;
1285 }
1286
1287 ndlp->nlp_rpi = mb->un.varWords[0];
1288
1289 /* Only if we are not a fabric nport do we issue PRLI */
1290 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1291 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1292 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1293 lpfc_issue_els_prli(vport, ndlp, 0);
1294 } else {
1295 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1296 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1297 }
1298 return ndlp->nlp_state;
1299 }
1300
1301 static uint32_t
1302 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1303 struct lpfc_nodelist *ndlp,
1304 void *arg,
1305 uint32_t evt)
1306 {
1307 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1308
1309 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1310 spin_lock_irq(shost->host_lock);
1311 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1312 spin_unlock_irq(shost->host_lock);
1313 return ndlp->nlp_state;
1314 } else {
1315 lpfc_drop_node(vport, ndlp);
1316 return NLP_STE_FREED_NODE;
1317 }
1318 }
1319
1320 static uint32_t
1321 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1322 struct lpfc_nodelist *ndlp,
1323 void *arg,
1324 uint32_t evt)
1325 {
1326 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1327
1328 /* Don't do anything that will mess up processing of the
1329 * previous RSCN.
1330 */
1331 if (vport->fc_flag & FC_RSCN_DEFERRED)
1332 return ndlp->nlp_state;
1333
1334 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1335 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1336 spin_lock_irq(shost->host_lock);
1337 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1338 spin_unlock_irq(shost->host_lock);
1339 lpfc_disc_set_adisc(vport, ndlp);
1340 return ndlp->nlp_state;
1341 }
1342
1343 static uint32_t
1344 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1345 void *arg, uint32_t evt)
1346 {
1347 struct lpfc_iocbq *cmdiocb;
1348
1349 cmdiocb = (struct lpfc_iocbq *) arg;
1350
1351 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1352 return ndlp->nlp_state;
1353 }
1354
1355 static uint32_t
1356 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1357 void *arg, uint32_t evt)
1358 {
1359 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1360
1361 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1362 return ndlp->nlp_state;
1363 }
1364
1365 static uint32_t
1366 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1367 void *arg, uint32_t evt)
1368 {
1369 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1370
1371 /* Software abort outstanding PRLI before sending acc */
1372 lpfc_els_abort(vport->phba, ndlp);
1373
1374 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1375 return ndlp->nlp_state;
1376 }
1377
1378 static uint32_t
1379 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1380 void *arg, uint32_t evt)
1381 {
1382 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1383
1384 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1385 return ndlp->nlp_state;
1386 }
1387
1388 /* This routine is envoked when we rcv a PRLO request from a nport
1389 * we are logged into. We should send back a PRLO rsp setting the
1390 * appropriate bits.
1391 * NEXT STATE = PRLI_ISSUE
1392 */
1393 static uint32_t
1394 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1395 void *arg, uint32_t evt)
1396 {
1397 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1398
1399 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1400 return ndlp->nlp_state;
1401 }
1402
1403 static uint32_t
1404 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1405 void *arg, uint32_t evt)
1406 {
1407 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1408 struct lpfc_iocbq *cmdiocb, *rspiocb;
1409 struct lpfc_hba *phba = vport->phba;
1410 IOCB_t *irsp;
1411 PRLI *npr;
1412
1413 cmdiocb = (struct lpfc_iocbq *) arg;
1414 rspiocb = cmdiocb->context_un.rsp_iocb;
1415 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1416
1417 irsp = &rspiocb->iocb;
1418 if (irsp->ulpStatus) {
1419 if ((vport->port_type == LPFC_NPIV_PORT) &&
1420 vport->cfg_restrict_login) {
1421 goto out;
1422 }
1423 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1424 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1425 return ndlp->nlp_state;
1426 }
1427
1428 /* Check out PRLI rsp */
1429 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1430 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1431 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1432 (npr->prliType == PRLI_FCP_TYPE)) {
1433 if (npr->initiatorFunc)
1434 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1435 if (npr->targetFunc)
1436 ndlp->nlp_type |= NLP_FCP_TARGET;
1437 if (npr->Retry)
1438 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1439 }
1440 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1441 (vport->port_type == LPFC_NPIV_PORT) &&
1442 vport->cfg_restrict_login) {
1443 out:
1444 spin_lock_irq(shost->host_lock);
1445 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1446 spin_unlock_irq(shost->host_lock);
1447 lpfc_issue_els_logo(vport, ndlp, 0);
1448
1449 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1450 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1451 return ndlp->nlp_state;
1452 }
1453
1454 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1455 if (ndlp->nlp_type & NLP_FCP_TARGET)
1456 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1457 else
1458 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1459 return ndlp->nlp_state;
1460 }
1461
1462 /*! lpfc_device_rm_prli_issue
1463 *
1464 * \pre
1465 * \post
1466 * \param phba
1467 * \param ndlp
1468 * \param arg
1469 * \param evt
1470 * \return uint32_t
1471 *
1472 * \b Description:
1473 * This routine is envoked when we a request to remove a nport we are in the
1474 * process of PRLIing. We should software abort outstanding prli, unreg
1475 * login, send a logout. We will change node state to UNUSED_NODE, put it
1476 * on plogi list so it can be freed when LOGO completes.
1477 *
1478 */
1479
1480 static uint32_t
1481 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1482 void *arg, uint32_t evt)
1483 {
1484 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1485
1486 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1487 spin_lock_irq(shost->host_lock);
1488 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1489 spin_unlock_irq(shost->host_lock);
1490 return ndlp->nlp_state;
1491 } else {
1492 /* software abort outstanding PLOGI */
1493 lpfc_els_abort(vport->phba, ndlp);
1494
1495 lpfc_drop_node(vport, ndlp);
1496 return NLP_STE_FREED_NODE;
1497 }
1498 }
1499
1500
1501 /*! lpfc_device_recov_prli_issue
1502 *
1503 * \pre
1504 * \post
1505 * \param phba
1506 * \param ndlp
1507 * \param arg
1508 * \param evt
1509 * \return uint32_t
1510 *
1511 * \b Description:
1512 * The routine is envoked when the state of a device is unknown, like
1513 * during a link down. We should remove the nodelist entry from the
1514 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1515 * outstanding PRLI command, then free the node entry.
1516 */
1517 static uint32_t
1518 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1519 struct lpfc_nodelist *ndlp,
1520 void *arg,
1521 uint32_t evt)
1522 {
1523 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1524 struct lpfc_hba *phba = vport->phba;
1525
1526 /* Don't do anything that will mess up processing of the
1527 * previous RSCN.
1528 */
1529 if (vport->fc_flag & FC_RSCN_DEFERRED)
1530 return ndlp->nlp_state;
1531
1532 /* software abort outstanding PRLI */
1533 lpfc_els_abort(phba, ndlp);
1534
1535 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1536 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1537 spin_lock_irq(shost->host_lock);
1538 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1539 spin_unlock_irq(shost->host_lock);
1540 lpfc_disc_set_adisc(vport, ndlp);
1541 return ndlp->nlp_state;
1542 }
1543
1544 static uint32_t
1545 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1546 void *arg, uint32_t evt)
1547 {
1548 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1549
1550 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1551 return ndlp->nlp_state;
1552 }
1553
1554 static uint32_t
1555 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1556 void *arg, uint32_t evt)
1557 {
1558 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1559
1560 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1561 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1562 return ndlp->nlp_state;
1563 }
1564
1565 static uint32_t
1566 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1567 void *arg, uint32_t evt)
1568 {
1569 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1570
1571 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1572 return ndlp->nlp_state;
1573 }
1574
1575 static uint32_t
1576 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1577 void *arg, uint32_t evt)
1578 {
1579 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1580
1581 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1582 return ndlp->nlp_state;
1583 }
1584
1585 static uint32_t
1586 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1587 void *arg, uint32_t evt)
1588 {
1589 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1590
1591 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1592 return ndlp->nlp_state;
1593 }
1594
1595 static uint32_t
1596 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1597 struct lpfc_nodelist *ndlp,
1598 void *arg,
1599 uint32_t evt)
1600 {
1601 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1602
1603 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1604 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1605 spin_lock_irq(shost->host_lock);
1606 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1607 spin_unlock_irq(shost->host_lock);
1608 lpfc_disc_set_adisc(vport, ndlp);
1609
1610 return ndlp->nlp_state;
1611 }
1612
1613 static uint32_t
1614 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1615 void *arg, uint32_t evt)
1616 {
1617 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1618
1619 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1620 return ndlp->nlp_state;
1621 }
1622
1623 static uint32_t
1624 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1625 void *arg, uint32_t evt)
1626 {
1627 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1628
1629 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1630 return ndlp->nlp_state;
1631 }
1632
1633 static uint32_t
1634 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1635 void *arg, uint32_t evt)
1636 {
1637 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1638
1639 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1640 return ndlp->nlp_state;
1641 }
1642
1643 static uint32_t
1644 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1645 struct lpfc_nodelist *ndlp,
1646 void *arg, uint32_t evt)
1647 {
1648 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1649
1650 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1651 return ndlp->nlp_state;
1652 }
1653
1654 static uint32_t
1655 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1656 void *arg, uint32_t evt)
1657 {
1658 struct lpfc_hba *phba = vport->phba;
1659 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1660
1661 /* flush the target */
1662 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1663 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1664
1665 /* Treat like rcv logo */
1666 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1667 return ndlp->nlp_state;
1668 }
1669
1670 static uint32_t
1671 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1672 struct lpfc_nodelist *ndlp,
1673 void *arg,
1674 uint32_t evt)
1675 {
1676 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1677
1678 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1679 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1680 spin_lock_irq(shost->host_lock);
1681 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1682 spin_unlock_irq(shost->host_lock);
1683 lpfc_disc_set_adisc(vport, ndlp);
1684 return ndlp->nlp_state;
1685 }
1686
1687 static uint32_t
1688 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1689 void *arg, uint32_t evt)
1690 {
1691 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1692 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1693
1694 /* Ignore PLOGI if we have an outstanding LOGO */
1695 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1696 return ndlp->nlp_state;
1697 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1698 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1699 spin_lock_irq(shost->host_lock);
1700 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1701 spin_unlock_irq(shost->host_lock);
1702 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1703 /* send PLOGI immediately, move to PLOGI issue state */
1704 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1705 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1706 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1707 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1708 }
1709 }
1710 return ndlp->nlp_state;
1711 }
1712
1713 static uint32_t
1714 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1715 void *arg, uint32_t evt)
1716 {
1717 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1718 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1719 struct ls_rjt stat;
1720
1721 memset(&stat, 0, sizeof (struct ls_rjt));
1722 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1723 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1724 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1725
1726 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1727 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1728 spin_lock_irq(shost->host_lock);
1729 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1730 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1731 spin_unlock_irq(shost->host_lock);
1732 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1733 lpfc_issue_els_adisc(vport, ndlp, 0);
1734 } else {
1735 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1736 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1737 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1738 }
1739 }
1740 return ndlp->nlp_state;
1741 }
1742
1743 static uint32_t
1744 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1745 void *arg, uint32_t evt)
1746 {
1747 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1748
1749 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1750 return ndlp->nlp_state;
1751 }
1752
1753 static uint32_t
1754 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1755 void *arg, uint32_t evt)
1756 {
1757 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1758
1759 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1760 /*
1761 * Do not start discovery if discovery is about to start
1762 * or discovery in progress for this node. Starting discovery
1763 * here will affect the counting of discovery threads.
1764 */
1765 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1766 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1767 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1768 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1769 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1770 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1771 lpfc_issue_els_adisc(vport, ndlp, 0);
1772 } else {
1773 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1774 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1775 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1776 }
1777 }
1778 return ndlp->nlp_state;
1779 }
1780
1781 static uint32_t
1782 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1783 void *arg, uint32_t evt)
1784 {
1785 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1786 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1787
1788 spin_lock_irq(shost->host_lock);
1789 ndlp->nlp_flag |= NLP_LOGO_ACC;
1790 spin_unlock_irq(shost->host_lock);
1791
1792 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1793
1794 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1795 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1796 spin_lock_irq(shost->host_lock);
1797 ndlp->nlp_flag |= NLP_DELAY_TMO;
1798 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1799 spin_unlock_irq(shost->host_lock);
1800 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1801 } else {
1802 spin_lock_irq(shost->host_lock);
1803 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1804 spin_unlock_irq(shost->host_lock);
1805 }
1806 return ndlp->nlp_state;
1807 }
1808
1809 static uint32_t
1810 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1811 void *arg, uint32_t evt)
1812 {
1813 struct lpfc_iocbq *cmdiocb, *rspiocb;
1814 IOCB_t *irsp;
1815
1816 cmdiocb = (struct lpfc_iocbq *) arg;
1817 rspiocb = cmdiocb->context_un.rsp_iocb;
1818
1819 irsp = &rspiocb->iocb;
1820 if (irsp->ulpStatus) {
1821 ndlp->nlp_flag |= NLP_DEFER_RM;
1822 return NLP_STE_FREED_NODE;
1823 }
1824 return ndlp->nlp_state;
1825 }
1826
1827 static uint32_t
1828 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1829 void *arg, uint32_t evt)
1830 {
1831 struct lpfc_iocbq *cmdiocb, *rspiocb;
1832 IOCB_t *irsp;
1833
1834 cmdiocb = (struct lpfc_iocbq *) arg;
1835 rspiocb = cmdiocb->context_un.rsp_iocb;
1836
1837 irsp = &rspiocb->iocb;
1838 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1839 lpfc_drop_node(vport, ndlp);
1840 return NLP_STE_FREED_NODE;
1841 }
1842 return ndlp->nlp_state;
1843 }
1844
1845 static uint32_t
1846 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1847 void *arg, uint32_t evt)
1848 {
1849 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1850 if (ndlp->nlp_DID == Fabric_DID) {
1851 spin_lock_irq(shost->host_lock);
1852 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1853 spin_unlock_irq(shost->host_lock);
1854 }
1855 lpfc_unreg_rpi(vport, ndlp);
1856 return ndlp->nlp_state;
1857 }
1858
1859 static uint32_t
1860 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1861 void *arg, uint32_t evt)
1862 {
1863 struct lpfc_iocbq *cmdiocb, *rspiocb;
1864 IOCB_t *irsp;
1865
1866 cmdiocb = (struct lpfc_iocbq *) arg;
1867 rspiocb = cmdiocb->context_un.rsp_iocb;
1868
1869 irsp = &rspiocb->iocb;
1870 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1871 lpfc_drop_node(vport, ndlp);
1872 return NLP_STE_FREED_NODE;
1873 }
1874 return ndlp->nlp_state;
1875 }
1876
1877 static uint32_t
1878 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
1879 struct lpfc_nodelist *ndlp,
1880 void *arg, uint32_t evt)
1881 {
1882 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1883 MAILBOX_t *mb = &pmb->mb;
1884
1885 if (!mb->mbxStatus)
1886 ndlp->nlp_rpi = mb->un.varWords[0];
1887 else {
1888 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1889 lpfc_drop_node(vport, ndlp);
1890 return NLP_STE_FREED_NODE;
1891 }
1892 }
1893 return ndlp->nlp_state;
1894 }
1895
1896 static uint32_t
1897 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1898 void *arg, uint32_t evt)
1899 {
1900 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1901
1902 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1903 spin_lock_irq(shost->host_lock);
1904 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1905 spin_unlock_irq(shost->host_lock);
1906 return ndlp->nlp_state;
1907 }
1908 lpfc_drop_node(vport, ndlp);
1909 return NLP_STE_FREED_NODE;
1910 }
1911
1912 static uint32_t
1913 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1914 void *arg, uint32_t evt)
1915 {
1916 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1917
1918 /* Don't do anything that will mess up processing of the
1919 * previous RSCN.
1920 */
1921 if (vport->fc_flag & FC_RSCN_DEFERRED)
1922 return ndlp->nlp_state;
1923
1924 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1925 spin_lock_irq(shost->host_lock);
1926 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1927 spin_unlock_irq(shost->host_lock);
1928 return ndlp->nlp_state;
1929 }
1930
1931
1932 /* This next section defines the NPort Discovery State Machine */
1933
1934 /* There are 4 different double linked lists nodelist entries can reside on.
1935 * The plogi list and adisc list are used when Link Up discovery or RSCN
1936 * processing is needed. Each list holds the nodes that we will send PLOGI
1937 * or ADISC on. These lists will keep track of what nodes will be effected
1938 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1939 * The unmapped_list will contain all nodes that we have successfully logged
1940 * into at the Fibre Channel level. The mapped_list will contain all nodes
1941 * that are mapped FCP targets.
1942 */
1943 /*
1944 * The bind list is a list of undiscovered (potentially non-existent) nodes
1945 * that we have saved binding information on. This information is used when
1946 * nodes transition from the unmapped to the mapped list.
1947 */
1948 /* For UNUSED_NODE state, the node has just been allocated .
1949 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1950 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1951 * and put on the unmapped list. For ADISC processing, the node is taken off
1952 * the ADISC list and placed on either the mapped or unmapped list (depending
1953 * on its previous state). Once on the unmapped list, a PRLI is issued and the
1954 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1955 * changed to UNMAPPED_NODE. If the completion indicates a mapped
1956 * node, the node is taken off the unmapped list. The binding list is checked
1957 * for a valid binding, or a binding is automatically assigned. If binding
1958 * assignment is unsuccessful, the node is left on the unmapped list. If
1959 * binding assignment is successful, the associated binding list entry (if
1960 * any) is removed, and the node is placed on the mapped list.
1961 */
1962 /*
1963 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
1964 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
1965 * expire, all effected nodes will receive a DEVICE_RM event.
1966 */
1967 /*
1968 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1969 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
1970 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1971 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1972 * we will first process the ADISC list. 32 entries are processed initially and
1973 * ADISC is initited for each one. Completions / Events for each node are
1974 * funnelled thru the state machine. As each node finishes ADISC processing, it
1975 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1976 * waiting, and the ADISC list count is identically 0, then we are done. For
1977 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1978 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1979 * list. 32 entries are processed initially and PLOGI is initited for each one.
1980 * Completions / Events for each node are funnelled thru the state machine. As
1981 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1982 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1983 * indentically 0, then we are done. We have now completed discovery / RSCN
1984 * handling. Upon completion, ALL nodes should be on either the mapped or
1985 * unmapped lists.
1986 */
1987
1988 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1989 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
1990 /* Action routine Event Current State */
1991 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
1992 lpfc_rcv_els_unused_node, /* RCV_PRLI */
1993 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
1994 lpfc_rcv_els_unused_node, /* RCV_ADISC */
1995 lpfc_rcv_els_unused_node, /* RCV_PDISC */
1996 lpfc_rcv_els_unused_node, /* RCV_PRLO */
1997 lpfc_disc_illegal, /* CMPL_PLOGI */
1998 lpfc_disc_illegal, /* CMPL_PRLI */
1999 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2000 lpfc_disc_illegal, /* CMPL_ADISC */
2001 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2002 lpfc_device_rm_unused_node, /* DEVICE_RM */
2003 lpfc_disc_illegal, /* DEVICE_RECOVERY */
2004
2005 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2006 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2007 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2008 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2009 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2010 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2011 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2012 lpfc_disc_illegal, /* CMPL_PRLI */
2013 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2014 lpfc_disc_illegal, /* CMPL_ADISC */
2015 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2016 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2017 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2018
2019 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2020 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2021 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2022 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2023 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2024 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2025 lpfc_disc_illegal, /* CMPL_PLOGI */
2026 lpfc_disc_illegal, /* CMPL_PRLI */
2027 lpfc_disc_illegal, /* CMPL_LOGO */
2028 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2029 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2030 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2031 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2032
2033 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2034 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2035 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2036 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2037 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2038 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2039 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2040 lpfc_disc_illegal, /* CMPL_PRLI */
2041 lpfc_disc_illegal, /* CMPL_LOGO */
2042 lpfc_disc_illegal, /* CMPL_ADISC */
2043 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2044 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2045 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2046
2047 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2048 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2049 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2050 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2051 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2052 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2053 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2054 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2055 lpfc_disc_illegal, /* CMPL_LOGO */
2056 lpfc_disc_illegal, /* CMPL_ADISC */
2057 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2058 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2059 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2060
2061 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2062 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2063 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2064 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2065 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2066 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2067 lpfc_disc_illegal, /* CMPL_PLOGI */
2068 lpfc_disc_illegal, /* CMPL_PRLI */
2069 lpfc_disc_illegal, /* CMPL_LOGO */
2070 lpfc_disc_illegal, /* CMPL_ADISC */
2071 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2072 lpfc_disc_illegal, /* DEVICE_RM */
2073 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2074
2075 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2076 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2077 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2078 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2079 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2080 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2081 lpfc_disc_illegal, /* CMPL_PLOGI */
2082 lpfc_disc_illegal, /* CMPL_PRLI */
2083 lpfc_disc_illegal, /* CMPL_LOGO */
2084 lpfc_disc_illegal, /* CMPL_ADISC */
2085 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2086 lpfc_disc_illegal, /* DEVICE_RM */
2087 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2088
2089 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2090 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2091 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2092 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2093 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2094 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2095 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2096 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2097 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2098 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2099 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2100 lpfc_device_rm_npr_node, /* DEVICE_RM */
2101 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2102 };
2103
2104 int
2105 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2106 void *arg, uint32_t evt)
2107 {
2108 uint32_t cur_state, rc;
2109 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2110 uint32_t);
2111 uint32_t got_ndlp = 0;
2112
2113 if (lpfc_nlp_get(ndlp))
2114 got_ndlp = 1;
2115
2116 cur_state = ndlp->nlp_state;
2117
2118 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2119 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2120 "0211 DSM in event x%x on NPort x%x in "
2121 "state %d Data: x%x\n",
2122 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2123
2124 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2125 "DSM in: evt:%d ste:%d did:x%x",
2126 evt, cur_state, ndlp->nlp_DID);
2127
2128 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2129 rc = (func) (vport, ndlp, arg, evt);
2130
2131 /* DSM out state <rc> on NPort <nlp_DID> */
2132 if (got_ndlp) {
2133 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2134 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2135 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2136
2137 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2138 "DSM out: ste:%d did:x%x flg:x%x",
2139 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2140 /* Decrement the ndlp reference count held for this function */
2141 lpfc_nlp_put(ndlp);
2142 } else {
2143 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2144 "0213 DSM out state %d on NPort free\n", rc);
2145
2146 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2147 "DSM out: ste:%d did:x%x flg:x%x",
2148 rc, 0, 0);
2149 }
2150
2151 return rc;
2152 }
Linux kernel - Deliverables
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