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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / scsi / lpfc / lpfc_nportdisc.c
blobbccc9c66fa37b3679e0348272c9511a961fc4436
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_sli4.h"
36 #include "lpfc_nl.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45
46 /* Called to verify a rcv'ed ADISC was intended for us. */
47 static int
48 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
49 struct lpfc_name *nn, struct lpfc_name *pn)
50 {
51 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
52 * table entry for that node.
53 */
54 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
55 return 0;
56
57 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
58 return 0;
59
60 /* we match, return success */
61 return 1;
62 }
63
64 int
65 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
66 struct serv_parm *sp, uint32_t class, int flogi)
67 {
68 volatile struct serv_parm *hsp = &vport->fc_sparam;
69 uint16_t hsp_value, ssp_value = 0;
70
71 /*
72 * The receive data field size and buffer-to-buffer receive data field
73 * size entries are 16 bits but are represented as two 8-bit fields in
74 * the driver data structure to account for rsvd bits and other control
75 * bits. Reconstruct and compare the fields as a 16-bit values before
76 * correcting the byte values.
77 */
78 if (sp->cls1.classValid) {
79 if (!flogi) {
80 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
81 hsp->cls1.rcvDataSizeLsb);
82 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
83 sp->cls1.rcvDataSizeLsb);
84 if (!ssp_value)
85 goto bad_service_param;
86 if (ssp_value > hsp_value) {
87 sp->cls1.rcvDataSizeLsb =
88 hsp->cls1.rcvDataSizeLsb;
89 sp->cls1.rcvDataSizeMsb =
90 hsp->cls1.rcvDataSizeMsb;
91 }
92 }
93 } else if (class == CLASS1)
94 goto bad_service_param;
95 if (sp->cls2.classValid) {
96 if (!flogi) {
97 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
98 hsp->cls2.rcvDataSizeLsb);
99 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
100 sp->cls2.rcvDataSizeLsb);
101 if (!ssp_value)
102 goto bad_service_param;
103 if (ssp_value > hsp_value) {
104 sp->cls2.rcvDataSizeLsb =
105 hsp->cls2.rcvDataSizeLsb;
106 sp->cls2.rcvDataSizeMsb =
107 hsp->cls2.rcvDataSizeMsb;
108 }
109 }
110 } else if (class == CLASS2)
111 goto bad_service_param;
112 if (sp->cls3.classValid) {
113 if (!flogi) {
114 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
115 hsp->cls3.rcvDataSizeLsb);
116 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
117 sp->cls3.rcvDataSizeLsb);
118 if (!ssp_value)
119 goto bad_service_param;
120 if (ssp_value > hsp_value) {
121 sp->cls3.rcvDataSizeLsb =
122 hsp->cls3.rcvDataSizeLsb;
123 sp->cls3.rcvDataSizeMsb =
124 hsp->cls3.rcvDataSizeMsb;
125 }
126 }
127 } else if (class == CLASS3)
128 goto bad_service_param;
129
130 /*
131 * Preserve the upper four bits of the MSB from the PLOGI response.
132 * These bits contain the Buffer-to-Buffer State Change Number
133 * from the target and need to be passed to the FW.
134 */
135 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
136 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
137 if (ssp_value > hsp_value) {
138 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
139 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
140 (hsp->cmn.bbRcvSizeMsb & 0x0F);
141 }
142
143 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
144 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
145 return 1;
146 bad_service_param:
147 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
148 "0207 Device %x "
149 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
150 "invalid service parameters. Ignoring device.\n",
151 ndlp->nlp_DID,
152 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
153 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
154 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
155 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
156 return 0;
157 }
158
159 static void *
160 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
161 struct lpfc_iocbq *rspiocb)
162 {
163 struct lpfc_dmabuf *pcmd, *prsp;
164 uint32_t *lp;
165 void *ptr = NULL;
166 IOCB_t *irsp;
167
168 irsp = &rspiocb->iocb;
169 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
170
171 /* For lpfc_els_abort, context2 could be zero'ed to delay
172 * freeing associated memory till after ABTS completes.
173 */
174 if (pcmd) {
175 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
176 list);
177 if (prsp) {
178 lp = (uint32_t *) prsp->virt;
179 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
180 }
181 } else {
182 /* Force ulpStatus error since we are returning NULL ptr */
183 if (!(irsp->ulpStatus)) {
184 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
185 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
186 }
187 ptr = NULL;
188 }
189 return ptr;
190 }
191
192
193
194 /*
195 * Free resources / clean up outstanding I/Os
196 * associated with a LPFC_NODELIST entry. This
197 * routine effectively results in a "software abort".
198 */
199 int
200 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
201 {
202 LIST_HEAD(completions);
203 LIST_HEAD(txcmplq_completions);
204 LIST_HEAD(abort_list);
205 struct lpfc_sli *psli = &phba->sli;
206 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
207 struct lpfc_iocbq *iocb, *next_iocb;
208
209 /* Abort outstanding I/O on NPort <nlp_DID> */
210 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
211 "2819 Abort outstanding I/O on NPort x%x "
212 "Data: x%x x%x x%x\n",
213 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
214 ndlp->nlp_rpi);
215
216 lpfc_fabric_abort_nport(ndlp);
217
218 /* First check the txq */
219 spin_lock_irq(&phba->hbalock);
220 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
221 /* Check to see if iocb matches the nport we are looking for */
222 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
223 /* It matches, so deque and call compl with anp error */
224 list_move_tail(&iocb->list, &completions);
225 pring->txq_cnt--;
226 }
227 }
228
229 /* Next check the txcmplq */
230 list_splice_init(&pring->txcmplq, &txcmplq_completions);
231 spin_unlock_irq(&phba->hbalock);
232
233 list_for_each_entry_safe(iocb, next_iocb, &txcmplq_completions, list) {
234 /* Check to see if iocb matches the nport we are looking for */
235 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
236 list_add_tail(&iocb->dlist, &abort_list);
237 }
238 spin_lock_irq(&phba->hbalock);
239 list_splice(&txcmplq_completions, &pring->txcmplq);
240 spin_unlock_irq(&phba->hbalock);
241
242 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
243 spin_lock_irq(&phba->hbalock);
244 list_del_init(&iocb->dlist);
245 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
246 spin_unlock_irq(&phba->hbalock);
247 }
248
249 /* Cancel all the IOCBs from the completions list */
250 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
251 IOERR_SLI_ABORTED);
252
253 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
254 return 0;
255 }
256
257 static int
258 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
259 struct lpfc_iocbq *cmdiocb)
260 {
261 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
262 struct lpfc_hba *phba = vport->phba;
263 struct lpfc_dmabuf *pcmd;
264 uint32_t *lp;
265 IOCB_t *icmd;
266 struct serv_parm *sp;
267 LPFC_MBOXQ_t *mbox;
268 struct ls_rjt stat;
269 int rc;
270
271 memset(&stat, 0, sizeof (struct ls_rjt));
272 if (vport->port_state <= LPFC_FDISC) {
273 /* Before responding to PLOGI, check for pt2pt mode.
274 * If we are pt2pt, with an outstanding FLOGI, abort
275 * the FLOGI and resend it first.
276 */
277 if (vport->fc_flag & FC_PT2PT) {
278 lpfc_els_abort_flogi(phba);
279 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
280 /* If the other side is supposed to initiate
281 * the PLOGI anyway, just ACC it now and
282 * move on with discovery.
283 */
284 phba->fc_edtov = FF_DEF_EDTOV;
285 phba->fc_ratov = FF_DEF_RATOV;
286 /* Start discovery - this should just do
287 CLEAR_LA */
288 lpfc_disc_start(vport);
289 } else
290 lpfc_initial_flogi(vport);
291 } else {
292 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
293 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
294 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
295 ndlp, NULL);
296 return 0;
297 }
298 }
299 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
300 lp = (uint32_t *) pcmd->virt;
301 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
302 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
303 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
304 "0140 PLOGI Reject: invalid nname\n");
305 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
306 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
307 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
308 NULL);
309 return 0;
310 }
311 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
312 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
313 "0141 PLOGI Reject: invalid pname\n");
314 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
315 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
316 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
317 NULL);
318 return 0;
319 }
320 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
321 /* Reject this request because invalid parameters */
322 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
323 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
324 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
325 NULL);
326 return 0;
327 }
328 icmd = &cmdiocb->iocb;
329
330 /* PLOGI chkparm OK */
331 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
332 "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
333 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
334 ndlp->nlp_rpi);
335
336 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
337 ndlp->nlp_fcp_info |= CLASS2;
338 else
339 ndlp->nlp_fcp_info |= CLASS3;
340
341 ndlp->nlp_class_sup = 0;
342 if (sp->cls1.classValid)
343 ndlp->nlp_class_sup |= FC_COS_CLASS1;
344 if (sp->cls2.classValid)
345 ndlp->nlp_class_sup |= FC_COS_CLASS2;
346 if (sp->cls3.classValid)
347 ndlp->nlp_class_sup |= FC_COS_CLASS3;
348 if (sp->cls4.classValid)
349 ndlp->nlp_class_sup |= FC_COS_CLASS4;
350 ndlp->nlp_maxframe =
351 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
352
353 /* no need to reg_login if we are already in one of these states */
354 switch (ndlp->nlp_state) {
355 case NLP_STE_NPR_NODE:
356 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
357 break;
358 case NLP_STE_REG_LOGIN_ISSUE:
359 case NLP_STE_PRLI_ISSUE:
360 case NLP_STE_UNMAPPED_NODE:
361 case NLP_STE_MAPPED_NODE:
362 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
363 return 1;
364 }
365
366 if ((vport->fc_flag & FC_PT2PT) &&
367 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
368 /* rcv'ed PLOGI decides what our NPortId will be */
369 vport->fc_myDID = icmd->un.rcvels.parmRo;
370 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
371 if (mbox == NULL)
372 goto out;
373 lpfc_config_link(phba, mbox);
374 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
375 mbox->vport = vport;
376 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
377 if (rc == MBX_NOT_FINISHED) {
378 mempool_free(mbox, phba->mbox_mem_pool);
379 goto out;
380 }
381
382 lpfc_can_disctmo(vport);
383 }
384 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
385 if (!mbox)
386 goto out;
387
388 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
389 (uint8_t *) sp, mbox, 0);
390 if (rc) {
391 mempool_free(mbox, phba->mbox_mem_pool);
392 goto out;
393 }
394
395 /* ACC PLOGI rsp command needs to execute first,
396 * queue this mbox command to be processed later.
397 */
398 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
399 /*
400 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
401 * command issued in lpfc_cmpl_els_acc().
402 */
403 mbox->vport = vport;
404 spin_lock_irq(shost->host_lock);
405 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
406 spin_unlock_irq(shost->host_lock);
407
408 /*
409 * If there is an outstanding PLOGI issued, abort it before
410 * sending ACC rsp for received PLOGI. If pending plogi
411 * is not canceled here, the plogi will be rejected by
412 * remote port and will be retried. On a configuration with
413 * single discovery thread, this will cause a huge delay in
414 * discovery. Also this will cause multiple state machines
415 * running in parallel for this node.
416 */
417 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
418 /* software abort outstanding PLOGI */
419 lpfc_els_abort(phba, ndlp);
420 }
421
422 if ((vport->port_type == LPFC_NPIV_PORT &&
423 vport->cfg_restrict_login)) {
424
425 /* In order to preserve RPIs, we want to cleanup
426 * the default RPI the firmware created to rcv
427 * this ELS request. The only way to do this is
428 * to register, then unregister the RPI.
429 */
430 spin_lock_irq(shost->host_lock);
431 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
432 spin_unlock_irq(shost->host_lock);
433 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
434 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
435 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
436 ndlp, mbox);
437 return 1;
438 }
439 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
440 return 1;
441 out:
442 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
443 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
444 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
445 return 0;
446 }
447
448 static int
449 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
450 struct lpfc_iocbq *cmdiocb)
451 {
452 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
453 struct lpfc_dmabuf *pcmd;
454 struct serv_parm *sp;
455 struct lpfc_name *pnn, *ppn;
456 struct ls_rjt stat;
457 ADISC *ap;
458 IOCB_t *icmd;
459 uint32_t *lp;
460 uint32_t cmd;
461
462 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
463 lp = (uint32_t *) pcmd->virt;
464
465 cmd = *lp++;
466 if (cmd == ELS_CMD_ADISC) {
467 ap = (ADISC *) lp;
468 pnn = (struct lpfc_name *) & ap->nodeName;
469 ppn = (struct lpfc_name *) & ap->portName;
470 } else {
471 sp = (struct serv_parm *) lp;
472 pnn = (struct lpfc_name *) & sp->nodeName;
473 ppn = (struct lpfc_name *) & sp->portName;
474 }
475
476 icmd = &cmdiocb->iocb;
477 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
478 if (cmd == ELS_CMD_ADISC) {
479 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
480 } else {
481 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
482 NULL);
483 }
484 return 1;
485 }
486 /* Reject this request because invalid parameters */
487 stat.un.b.lsRjtRsvd0 = 0;
488 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
489 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
490 stat.un.b.vendorUnique = 0;
491 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
492
493 /* 1 sec timeout */
494 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
495
496 spin_lock_irq(shost->host_lock);
497 ndlp->nlp_flag |= NLP_DELAY_TMO;
498 spin_unlock_irq(shost->host_lock);
499 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
500 ndlp->nlp_prev_state = ndlp->nlp_state;
501 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
502 return 0;
503 }
504
505 static int
506 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
507 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
508 {
509 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
510 struct lpfc_hba *phba = vport->phba;
511 struct lpfc_vport **vports;
512 int i, active_vlink_present = 0 ;
513
514 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
515 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
516 * PLOGIs during LOGO storms from a device.
517 */
518 spin_lock_irq(shost->host_lock);
519 ndlp->nlp_flag |= NLP_LOGO_ACC;
520 spin_unlock_irq(shost->host_lock);
521 if (els_cmd == ELS_CMD_PRLO)
522 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
523 else
524 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
525 if (ndlp->nlp_DID == Fabric_DID) {
526 if (vport->port_state <= LPFC_FDISC)
527 goto out;
528 lpfc_linkdown_port(vport);
529 spin_lock_irq(shost->host_lock);
530 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
531 spin_unlock_irq(shost->host_lock);
532 vports = lpfc_create_vport_work_array(phba);
533 if (vports) {
534 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
535 i++) {
536 if ((!(vports[i]->fc_flag &
537 FC_VPORT_LOGO_RCVD)) &&
538 (vports[i]->port_state > LPFC_FDISC)) {
539 active_vlink_present = 1;
540 break;
541 }
542 }
543 lpfc_destroy_vport_work_array(phba, vports);
544 }
545
546 if (active_vlink_present) {
547 /*
548 * If there are other active VLinks present,
549 * re-instantiate the Vlink using FDISC.
550 */
551 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
552 spin_lock_irq(shost->host_lock);
553 ndlp->nlp_flag |= NLP_DELAY_TMO;
554 spin_unlock_irq(shost->host_lock);
555 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
556 vport->port_state = LPFC_FDISC;
557 } else {
558 spin_lock_irq(shost->host_lock);
559 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
560 spin_unlock_irq(shost->host_lock);
561 lpfc_retry_pport_discovery(phba);
562 }
563 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
564 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
565 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
566 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
567 /* Only try to re-login if this is NOT a Fabric Node */
568 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
569 spin_lock_irq(shost->host_lock);
570 ndlp->nlp_flag |= NLP_DELAY_TMO;
571 spin_unlock_irq(shost->host_lock);
572
573 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
574 }
575 out:
576 ndlp->nlp_prev_state = ndlp->nlp_state;
577 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
578
579 spin_lock_irq(shost->host_lock);
580 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
581 spin_unlock_irq(shost->host_lock);
582 /* The driver has to wait until the ACC completes before it continues
583 * processing the LOGO. The action will resume in
584 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
585 * unreg_login, the driver waits so the ACC does not get aborted.
586 */
587 return 0;
588 }
589
590 static void
591 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
592 struct lpfc_iocbq *cmdiocb)
593 {
594 struct lpfc_dmabuf *pcmd;
595 uint32_t *lp;
596 PRLI *npr;
597 struct fc_rport *rport = ndlp->rport;
598 u32 roles;
599
600 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
601 lp = (uint32_t *) pcmd->virt;
602 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
603
604 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
605 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
606 if (npr->prliType == PRLI_FCP_TYPE) {
607 if (npr->initiatorFunc)
608 ndlp->nlp_type |= NLP_FCP_INITIATOR;
609 if (npr->targetFunc)
610 ndlp->nlp_type |= NLP_FCP_TARGET;
611 if (npr->Retry)
612 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
613 }
614 if (rport) {
615 /* We need to update the rport role values */
616 roles = FC_RPORT_ROLE_UNKNOWN;
617 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
618 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
619 if (ndlp->nlp_type & NLP_FCP_TARGET)
620 roles |= FC_RPORT_ROLE_FCP_TARGET;
621
622 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
623 "rport rolechg: role:x%x did:x%x flg:x%x",
624 roles, ndlp->nlp_DID, ndlp->nlp_flag);
625
626 fc_remote_port_rolechg(rport, roles);
627 }
628 }
629
630 static uint32_t
631 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
632 {
633 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
634
635 if (!(ndlp->nlp_flag & NLP_RPI_VALID)) {
636 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
637 return 0;
638 }
639
640 if (!(vport->fc_flag & FC_PT2PT)) {
641 /* Check config parameter use-adisc or FCP-2 */
642 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
643 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
644 (ndlp->nlp_type & NLP_FCP_TARGET))) {
645 spin_lock_irq(shost->host_lock);
646 ndlp->nlp_flag |= NLP_NPR_ADISC;
647 spin_unlock_irq(shost->host_lock);
648 return 1;
649 }
650 }
651 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
652 lpfc_unreg_rpi(vport, ndlp);
653 return 0;
654 }
655 /**
656 * lpfc_release_rpi - Release a RPI by issueing unreg_login mailbox cmd.
657 * @phba : Pointer to lpfc_hba structure.
658 * @vport: Pointer to lpfc_vport structure.
659 * @rpi : rpi to be release.
660 *
661 * This function will send a unreg_login mailbox command to the firmware
662 * to release a rpi.
663 **/
664 void
665 lpfc_release_rpi(struct lpfc_hba *phba,
666 struct lpfc_vport *vport,
667 uint16_t rpi)
668 {
669 LPFC_MBOXQ_t *pmb;
670 int rc;
671
672 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
673 GFP_KERNEL);
674 if (!pmb)
675 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
676 "2796 mailbox memory allocation failed \n");
677 else {
678 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
679 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
680 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
681 if (rc == MBX_NOT_FINISHED)
682 mempool_free(pmb, phba->mbox_mem_pool);
683 }
684 }
685
686 static uint32_t
687 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
688 void *arg, uint32_t evt)
689 {
690 struct lpfc_hba *phba;
691 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
692 MAILBOX_t *mb;
693 uint16_t rpi;
694
695 phba = vport->phba;
696 /* Release the RPI if reglogin completing */
697 if (!(phba->pport->load_flag & FC_UNLOADING) &&
698 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
699 (!pmb->u.mb.mbxStatus)) {
700 mb = &pmb->u.mb;
701 rpi = pmb->u.mb.un.varWords[0];
702 lpfc_release_rpi(phba, vport, rpi);
703 }
704 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
705 "0271 Illegal State Transition: node x%x "
706 "event x%x, state x%x Data: x%x x%x\n",
707 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
708 ndlp->nlp_flag);
709 return ndlp->nlp_state;
710 }
711
712 static uint32_t
713 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
714 void *arg, uint32_t evt)
715 {
716 /* This transition is only legal if we previously
717 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
718 * working on the same NPortID, do nothing for this thread
719 * to stop it.
720 */
721 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
722 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
723 "0272 Illegal State Transition: node x%x "
724 "event x%x, state x%x Data: x%x x%x\n",
725 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
726 ndlp->nlp_flag);
727 }
728 return ndlp->nlp_state;
729 }
730
731 /* Start of Discovery State Machine routines */
732
733 static uint32_t
734 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
735 void *arg, uint32_t evt)
736 {
737 struct lpfc_iocbq *cmdiocb;
738
739 cmdiocb = (struct lpfc_iocbq *) arg;
740
741 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
742 return ndlp->nlp_state;
743 }
744 return NLP_STE_FREED_NODE;
745 }
746
747 static uint32_t
748 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
749 void *arg, uint32_t evt)
750 {
751 lpfc_issue_els_logo(vport, ndlp, 0);
752 return ndlp->nlp_state;
753 }
754
755 static uint32_t
756 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
757 void *arg, uint32_t evt)
758 {
759 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
760 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
761
762 spin_lock_irq(shost->host_lock);
763 ndlp->nlp_flag |= NLP_LOGO_ACC;
764 spin_unlock_irq(shost->host_lock);
765 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
766
767 return ndlp->nlp_state;
768 }
769
770 static uint32_t
771 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
772 void *arg, uint32_t evt)
773 {
774 return NLP_STE_FREED_NODE;
775 }
776
777 static uint32_t
778 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
779 void *arg, uint32_t evt)
780 {
781 return NLP_STE_FREED_NODE;
782 }
783
784 static uint32_t
785 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
786 void *arg, uint32_t evt)
787 {
788 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
789 struct lpfc_hba *phba = vport->phba;
790 struct lpfc_iocbq *cmdiocb = arg;
791 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
792 uint32_t *lp = (uint32_t *) pcmd->virt;
793 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
794 struct ls_rjt stat;
795 int port_cmp;
796
797 memset(&stat, 0, sizeof (struct ls_rjt));
798
799 /* For a PLOGI, we only accept if our portname is less
800 * than the remote portname.
801 */
802 phba->fc_stat.elsLogiCol++;
803 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
804 sizeof(struct lpfc_name));
805
806 if (port_cmp >= 0) {
807 /* Reject this request because the remote node will accept
808 ours */
809 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
810 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
811 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
812 NULL);
813 } else {
814 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
815 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
816 (vport->num_disc_nodes)) {
817 spin_lock_irq(shost->host_lock);
818 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
819 spin_unlock_irq(shost->host_lock);
820 /* Check if there are more PLOGIs to be sent */
821 lpfc_more_plogi(vport);
822 if (vport->num_disc_nodes == 0) {
823 spin_lock_irq(shost->host_lock);
824 vport->fc_flag &= ~FC_NDISC_ACTIVE;
825 spin_unlock_irq(shost->host_lock);
826 lpfc_can_disctmo(vport);
827 lpfc_end_rscn(vport);
828 }
829 }
830 } /* If our portname was less */
831
832 return ndlp->nlp_state;
833 }
834
835 static uint32_t
836 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
837 void *arg, uint32_t evt)
838 {
839 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
840 struct ls_rjt stat;
841
842 memset(&stat, 0, sizeof (struct ls_rjt));
843 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
844 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
845 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
846 return ndlp->nlp_state;
847 }
848
849 static uint32_t
850 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
851 void *arg, uint32_t evt)
852 {
853 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
854
855 /* software abort outstanding PLOGI */
856 lpfc_els_abort(vport->phba, ndlp);
857
858 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
859 return ndlp->nlp_state;
860 }
861
862 static uint32_t
863 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
864 void *arg, uint32_t evt)
865 {
866 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
867 struct lpfc_hba *phba = vport->phba;
868 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
869
870 /* software abort outstanding PLOGI */
871 lpfc_els_abort(phba, ndlp);
872
873 if (evt == NLP_EVT_RCV_LOGO) {
874 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
875 } else {
876 lpfc_issue_els_logo(vport, ndlp, 0);
877 }
878
879 /* Put ndlp in npr state set plogi timer for 1 sec */
880 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
881 spin_lock_irq(shost->host_lock);
882 ndlp->nlp_flag |= NLP_DELAY_TMO;
883 spin_unlock_irq(shost->host_lock);
884 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
885 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
886 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
887
888 return ndlp->nlp_state;
889 }
890
891 static uint32_t
892 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
893 struct lpfc_nodelist *ndlp,
894 void *arg,
895 uint32_t evt)
896 {
897 struct lpfc_hba *phba = vport->phba;
898 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
899 struct lpfc_iocbq *cmdiocb, *rspiocb;
900 struct lpfc_dmabuf *pcmd, *prsp, *mp;
901 uint32_t *lp;
902 IOCB_t *irsp;
903 struct serv_parm *sp;
904 LPFC_MBOXQ_t *mbox;
905
906 cmdiocb = (struct lpfc_iocbq *) arg;
907 rspiocb = cmdiocb->context_un.rsp_iocb;
908
909 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
910 /* Recovery from PLOGI collision logic */
911 return ndlp->nlp_state;
912 }
913
914 irsp = &rspiocb->iocb;
915
916 if (irsp->ulpStatus)
917 goto out;
918
919 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
920
921 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
922
923 lp = (uint32_t *) prsp->virt;
924 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
925
926 /* Some switches have FDMI servers returning 0 for WWN */
927 if ((ndlp->nlp_DID != FDMI_DID) &&
928 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
929 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
930 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
931 "0142 PLOGI RSP: Invalid WWN.\n");
932 goto out;
933 }
934 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
935 goto out;
936 /* PLOGI chkparm OK */
937 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
938 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
939 ndlp->nlp_DID, ndlp->nlp_state,
940 ndlp->nlp_flag, ndlp->nlp_rpi);
941 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
942 ndlp->nlp_fcp_info |= CLASS2;
943 else
944 ndlp->nlp_fcp_info |= CLASS3;
945
946 ndlp->nlp_class_sup = 0;
947 if (sp->cls1.classValid)
948 ndlp->nlp_class_sup |= FC_COS_CLASS1;
949 if (sp->cls2.classValid)
950 ndlp->nlp_class_sup |= FC_COS_CLASS2;
951 if (sp->cls3.classValid)
952 ndlp->nlp_class_sup |= FC_COS_CLASS3;
953 if (sp->cls4.classValid)
954 ndlp->nlp_class_sup |= FC_COS_CLASS4;
955 ndlp->nlp_maxframe =
956 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
957
958 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
959 if (!mbox) {
960 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
961 "0133 PLOGI: no memory for reg_login "
962 "Data: x%x x%x x%x x%x\n",
963 ndlp->nlp_DID, ndlp->nlp_state,
964 ndlp->nlp_flag, ndlp->nlp_rpi);
965 goto out;
966 }
967
968 lpfc_unreg_rpi(vport, ndlp);
969
970 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
971 (uint8_t *) sp, mbox, 0) == 0) {
972 switch (ndlp->nlp_DID) {
973 case NameServer_DID:
974 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
975 break;
976 case FDMI_DID:
977 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
978 break;
979 default:
980 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
981 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
982 }
983 mbox->context2 = lpfc_nlp_get(ndlp);
984 mbox->vport = vport;
985 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
986 != MBX_NOT_FINISHED) {
987 lpfc_nlp_set_state(vport, ndlp,
988 NLP_STE_REG_LOGIN_ISSUE);
989 return ndlp->nlp_state;
990 }
991 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
992 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
993 /* decrement node reference count to the failed mbox
994 * command
995 */
996 lpfc_nlp_put(ndlp);
997 mp = (struct lpfc_dmabuf *) mbox->context1;
998 lpfc_mbuf_free(phba, mp->virt, mp->phys);
999 kfree(mp);
1000 mempool_free(mbox, phba->mbox_mem_pool);
1001
1002 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1003 "0134 PLOGI: cannot issue reg_login "
1004 "Data: x%x x%x x%x x%x\n",
1005 ndlp->nlp_DID, ndlp->nlp_state,
1006 ndlp->nlp_flag, ndlp->nlp_rpi);
1007 } else {
1008 mempool_free(mbox, phba->mbox_mem_pool);
1009
1010 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1011 "0135 PLOGI: cannot format reg_login "
1012 "Data: x%x x%x x%x x%x\n",
1013 ndlp->nlp_DID, ndlp->nlp_state,
1014 ndlp->nlp_flag, ndlp->nlp_rpi);
1015 }
1016
1017
1018 out:
1019 if (ndlp->nlp_DID == NameServer_DID) {
1020 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1021 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1022 "0261 Cannot Register NameServer login\n");
1023 }
1024
1025 spin_lock_irq(shost->host_lock);
1026 ndlp->nlp_flag |= NLP_DEFER_RM;
1027 spin_unlock_irq(shost->host_lock);
1028 return NLP_STE_FREED_NODE;
1029 }
1030
1031 static uint32_t
1032 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1033 void *arg, uint32_t evt)
1034 {
1035 return ndlp->nlp_state;
1036 }
1037
1038 static uint32_t
1039 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1040 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1041 {
1042 struct lpfc_hba *phba;
1043 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1044 MAILBOX_t *mb = &pmb->u.mb;
1045 uint16_t rpi;
1046
1047 phba = vport->phba;
1048 /* Release the RPI */
1049 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1050 !mb->mbxStatus) {
1051 rpi = pmb->u.mb.un.varWords[0];
1052 lpfc_release_rpi(phba, vport, rpi);
1053 }
1054 return ndlp->nlp_state;
1055 }
1056
1057 static uint32_t
1058 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1059 void *arg, uint32_t evt)
1060 {
1061 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1062
1063 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1064 spin_lock_irq(shost->host_lock);
1065 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1066 spin_unlock_irq(shost->host_lock);
1067 return ndlp->nlp_state;
1068 } else {
1069 /* software abort outstanding PLOGI */
1070 lpfc_els_abort(vport->phba, ndlp);
1071
1072 lpfc_drop_node(vport, ndlp);
1073 return NLP_STE_FREED_NODE;
1074 }
1075 }
1076
1077 static uint32_t
1078 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1079 struct lpfc_nodelist *ndlp,
1080 void *arg,
1081 uint32_t evt)
1082 {
1083 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1084 struct lpfc_hba *phba = vport->phba;
1085
1086 /* Don't do anything that will mess up processing of the
1087 * previous RSCN.
1088 */
1089 if (vport->fc_flag & FC_RSCN_DEFERRED)
1090 return ndlp->nlp_state;
1091
1092 /* software abort outstanding PLOGI */
1093 lpfc_els_abort(phba, ndlp);
1094
1095 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1096 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1097 spin_lock_irq(shost->host_lock);
1098 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1099 spin_unlock_irq(shost->host_lock);
1100
1101 return ndlp->nlp_state;
1102 }
1103
1104 static uint32_t
1105 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1106 void *arg, uint32_t evt)
1107 {
1108 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1109 struct lpfc_hba *phba = vport->phba;
1110 struct lpfc_iocbq *cmdiocb;
1111
1112 /* software abort outstanding ADISC */
1113 lpfc_els_abort(phba, ndlp);
1114
1115 cmdiocb = (struct lpfc_iocbq *) arg;
1116
1117 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1118 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1119 spin_lock_irq(shost->host_lock);
1120 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1121 spin_unlock_irq(shost->host_lock);
1122 if (vport->num_disc_nodes)
1123 lpfc_more_adisc(vport);
1124 }
1125 return ndlp->nlp_state;
1126 }
1127 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1128 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1129 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1130
1131 return ndlp->nlp_state;
1132 }
1133
1134 static uint32_t
1135 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1136 void *arg, uint32_t evt)
1137 {
1138 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1139
1140 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1141 return ndlp->nlp_state;
1142 }
1143
1144 static uint32_t
1145 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1146 void *arg, uint32_t evt)
1147 {
1148 struct lpfc_hba *phba = vport->phba;
1149 struct lpfc_iocbq *cmdiocb;
1150
1151 cmdiocb = (struct lpfc_iocbq *) arg;
1152
1153 /* software abort outstanding ADISC */
1154 lpfc_els_abort(phba, ndlp);
1155
1156 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1157 return ndlp->nlp_state;
1158 }
1159
1160 static uint32_t
1161 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1162 struct lpfc_nodelist *ndlp,
1163 void *arg, uint32_t evt)
1164 {
1165 struct lpfc_iocbq *cmdiocb;
1166
1167 cmdiocb = (struct lpfc_iocbq *) arg;
1168
1169 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1170 return ndlp->nlp_state;
1171 }
1172
1173 static uint32_t
1174 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1175 void *arg, uint32_t evt)
1176 {
1177 struct lpfc_iocbq *cmdiocb;
1178
1179 cmdiocb = (struct lpfc_iocbq *) arg;
1180
1181 /* Treat like rcv logo */
1182 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1183 return ndlp->nlp_state;
1184 }
1185
1186 static uint32_t
1187 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1188 struct lpfc_nodelist *ndlp,
1189 void *arg, uint32_t evt)
1190 {
1191 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1192 struct lpfc_hba *phba = vport->phba;
1193 struct lpfc_iocbq *cmdiocb, *rspiocb;
1194 IOCB_t *irsp;
1195 ADISC *ap;
1196 int rc;
1197
1198 cmdiocb = (struct lpfc_iocbq *) arg;
1199 rspiocb = cmdiocb->context_un.rsp_iocb;
1200
1201 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1202 irsp = &rspiocb->iocb;
1203
1204 if ((irsp->ulpStatus) ||
1205 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1206 /* 1 sec timeout */
1207 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1208 spin_lock_irq(shost->host_lock);
1209 ndlp->nlp_flag |= NLP_DELAY_TMO;
1210 spin_unlock_irq(shost->host_lock);
1211 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1212
1213 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1214 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1215
1216 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1217 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1218 lpfc_unreg_rpi(vport, ndlp);
1219 return ndlp->nlp_state;
1220 }
1221
1222 if (phba->sli_rev == LPFC_SLI_REV4) {
1223 rc = lpfc_sli4_resume_rpi(ndlp);
1224 if (rc) {
1225 /* Stay in state and retry. */
1226 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1227 return ndlp->nlp_state;
1228 }
1229 }
1230
1231 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1232 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1233 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1234 } else {
1235 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1236 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1237 }
1238
1239 return ndlp->nlp_state;
1240 }
1241
1242 static uint32_t
1243 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1244 void *arg, uint32_t evt)
1245 {
1246 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1247
1248 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1249 spin_lock_irq(shost->host_lock);
1250 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1251 spin_unlock_irq(shost->host_lock);
1252 return ndlp->nlp_state;
1253 } else {
1254 /* software abort outstanding ADISC */
1255 lpfc_els_abort(vport->phba, ndlp);
1256
1257 lpfc_drop_node(vport, ndlp);
1258 return NLP_STE_FREED_NODE;
1259 }
1260 }
1261
1262 static uint32_t
1263 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1264 struct lpfc_nodelist *ndlp,
1265 void *arg,
1266 uint32_t evt)
1267 {
1268 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1269 struct lpfc_hba *phba = vport->phba;
1270
1271 /* Don't do anything that will mess up processing of the
1272 * previous RSCN.
1273 */
1274 if (vport->fc_flag & FC_RSCN_DEFERRED)
1275 return ndlp->nlp_state;
1276
1277 /* software abort outstanding ADISC */
1278 lpfc_els_abort(phba, ndlp);
1279
1280 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1281 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1282 spin_lock_irq(shost->host_lock);
1283 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1284 spin_unlock_irq(shost->host_lock);
1285 lpfc_disc_set_adisc(vport, ndlp);
1286 return ndlp->nlp_state;
1287 }
1288
1289 static uint32_t
1290 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1291 struct lpfc_nodelist *ndlp,
1292 void *arg,
1293 uint32_t evt)
1294 {
1295 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1296
1297 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1298 return ndlp->nlp_state;
1299 }
1300
1301 static uint32_t
1302 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1303 struct lpfc_nodelist *ndlp,
1304 void *arg,
1305 uint32_t evt)
1306 {
1307 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1308
1309 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1310 return ndlp->nlp_state;
1311 }
1312
1313 static uint32_t
1314 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1315 struct lpfc_nodelist *ndlp,
1316 void *arg,
1317 uint32_t evt)
1318 {
1319 struct lpfc_hba *phba = vport->phba;
1320 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1321 LPFC_MBOXQ_t *mb;
1322 LPFC_MBOXQ_t *nextmb;
1323 struct lpfc_dmabuf *mp;
1324
1325 cmdiocb = (struct lpfc_iocbq *) arg;
1326
1327 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1328 if ((mb = phba->sli.mbox_active)) {
1329 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1330 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1331 lpfc_nlp_put(ndlp);
1332 mb->context2 = NULL;
1333 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1334 }
1335 }
1336
1337 spin_lock_irq(&phba->hbalock);
1338 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1339 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1340 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1341 if (phba->sli_rev == LPFC_SLI_REV4) {
1342 spin_unlock_irq(&phba->hbalock);
1343 lpfc_sli4_free_rpi(phba,
1344 mb->u.mb.un.varRegLogin.rpi);
1345 spin_lock_irq(&phba->hbalock);
1346 }
1347 mp = (struct lpfc_dmabuf *) (mb->context1);
1348 if (mp) {
1349 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1350 kfree(mp);
1351 }
1352 lpfc_nlp_put(ndlp);
1353 list_del(&mb->list);
1354 phba->sli.mboxq_cnt--;
1355 mempool_free(mb, phba->mbox_mem_pool);
1356 }
1357 }
1358 spin_unlock_irq(&phba->hbalock);
1359
1360 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1361 return ndlp->nlp_state;
1362 }
1363
1364 static uint32_t
1365 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1366 struct lpfc_nodelist *ndlp,
1367 void *arg,
1368 uint32_t evt)
1369 {
1370 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1371
1372 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1373 return ndlp->nlp_state;
1374 }
1375
1376 static uint32_t
1377 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1378 struct lpfc_nodelist *ndlp,
1379 void *arg,
1380 uint32_t evt)
1381 {
1382 struct lpfc_iocbq *cmdiocb;
1383
1384 cmdiocb = (struct lpfc_iocbq *) arg;
1385 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1386 return ndlp->nlp_state;
1387 }
1388
1389 static uint32_t
1390 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1391 struct lpfc_nodelist *ndlp,
1392 void *arg,
1393 uint32_t evt)
1394 {
1395 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1396 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1397 MAILBOX_t *mb = &pmb->u.mb;
1398 uint32_t did = mb->un.varWords[1];
1399
1400 if (mb->mbxStatus) {
1401 /* RegLogin failed */
1402 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1403 "0246 RegLogin failed Data: x%x x%x x%x\n",
1404 did, mb->mbxStatus, vport->port_state);
1405 /*
1406 * If RegLogin failed due to lack of HBA resources do not
1407 * retry discovery.
1408 */
1409 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1410 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1411 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1412 return ndlp->nlp_state;
1413 }
1414
1415 /* Put ndlp in npr state set plogi timer for 1 sec */
1416 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1417 spin_lock_irq(shost->host_lock);
1418 ndlp->nlp_flag |= NLP_DELAY_TMO;
1419 spin_unlock_irq(shost->host_lock);
1420 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1421
1422 lpfc_issue_els_logo(vport, ndlp, 0);
1423 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1424 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1425 return ndlp->nlp_state;
1426 }
1427
1428 ndlp->nlp_rpi = mb->un.varWords[0];
1429 ndlp->nlp_flag |= NLP_RPI_VALID;
1430
1431 /* Only if we are not a fabric nport do we issue PRLI */
1432 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1433 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1434 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1435 lpfc_issue_els_prli(vport, ndlp, 0);
1436 } else {
1437 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1438 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1439 }
1440 return ndlp->nlp_state;
1441 }
1442
1443 static uint32_t
1444 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1445 struct lpfc_nodelist *ndlp,
1446 void *arg,
1447 uint32_t evt)
1448 {
1449 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1450
1451 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1452 spin_lock_irq(shost->host_lock);
1453 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1454 spin_unlock_irq(shost->host_lock);
1455 return ndlp->nlp_state;
1456 } else {
1457 lpfc_drop_node(vport, ndlp);
1458 return NLP_STE_FREED_NODE;
1459 }
1460 }
1461
1462 static uint32_t
1463 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1464 struct lpfc_nodelist *ndlp,
1465 void *arg,
1466 uint32_t evt)
1467 {
1468 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1469
1470 /* Don't do anything that will mess up processing of the
1471 * previous RSCN.
1472 */
1473 if (vport->fc_flag & FC_RSCN_DEFERRED)
1474 return ndlp->nlp_state;
1475
1476 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1477 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1478 spin_lock_irq(shost->host_lock);
1479 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1480 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1481 spin_unlock_irq(shost->host_lock);
1482 lpfc_disc_set_adisc(vport, ndlp);
1483 return ndlp->nlp_state;
1484 }
1485
1486 static uint32_t
1487 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1488 void *arg, uint32_t evt)
1489 {
1490 struct lpfc_iocbq *cmdiocb;
1491
1492 cmdiocb = (struct lpfc_iocbq *) arg;
1493
1494 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1495 return ndlp->nlp_state;
1496 }
1497
1498 static uint32_t
1499 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1500 void *arg, uint32_t evt)
1501 {
1502 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1503
1504 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1505 return ndlp->nlp_state;
1506 }
1507
1508 static uint32_t
1509 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1510 void *arg, uint32_t evt)
1511 {
1512 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1513
1514 /* Software abort outstanding PRLI before sending acc */
1515 lpfc_els_abort(vport->phba, ndlp);
1516
1517 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1518 return ndlp->nlp_state;
1519 }
1520
1521 static uint32_t
1522 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1523 void *arg, uint32_t evt)
1524 {
1525 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1526
1527 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1528 return ndlp->nlp_state;
1529 }
1530
1531 /* This routine is envoked when we rcv a PRLO request from a nport
1532 * we are logged into. We should send back a PRLO rsp setting the
1533 * appropriate bits.
1534 * NEXT STATE = PRLI_ISSUE
1535 */
1536 static uint32_t
1537 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1538 void *arg, uint32_t evt)
1539 {
1540 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1541
1542 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1543 return ndlp->nlp_state;
1544 }
1545
1546 static uint32_t
1547 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1548 void *arg, uint32_t evt)
1549 {
1550 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1551 struct lpfc_iocbq *cmdiocb, *rspiocb;
1552 struct lpfc_hba *phba = vport->phba;
1553 IOCB_t *irsp;
1554 PRLI *npr;
1555
1556 cmdiocb = (struct lpfc_iocbq *) arg;
1557 rspiocb = cmdiocb->context_un.rsp_iocb;
1558 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1559
1560 irsp = &rspiocb->iocb;
1561 if (irsp->ulpStatus) {
1562 if ((vport->port_type == LPFC_NPIV_PORT) &&
1563 vport->cfg_restrict_login) {
1564 goto out;
1565 }
1566 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1567 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1568 return ndlp->nlp_state;
1569 }
1570
1571 /* Check out PRLI rsp */
1572 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1573 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1574 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1575 (npr->prliType == PRLI_FCP_TYPE)) {
1576 if (npr->initiatorFunc)
1577 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1578 if (npr->targetFunc)
1579 ndlp->nlp_type |= NLP_FCP_TARGET;
1580 if (npr->Retry)
1581 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1582 }
1583 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1584 (vport->port_type == LPFC_NPIV_PORT) &&
1585 vport->cfg_restrict_login) {
1586 out:
1587 spin_lock_irq(shost->host_lock);
1588 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1589 spin_unlock_irq(shost->host_lock);
1590 lpfc_issue_els_logo(vport, ndlp, 0);
1591
1592 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1593 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1594 return ndlp->nlp_state;
1595 }
1596
1597 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1598 if (ndlp->nlp_type & NLP_FCP_TARGET)
1599 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1600 else
1601 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1602 return ndlp->nlp_state;
1603 }
1604
1605 /*! lpfc_device_rm_prli_issue
1606 *
1607 * \pre
1608 * \post
1609 * \param phba
1610 * \param ndlp
1611 * \param arg
1612 * \param evt
1613 * \return uint32_t
1614 *
1615 * \b Description:
1616 * This routine is envoked when we a request to remove a nport we are in the
1617 * process of PRLIing. We should software abort outstanding prli, unreg
1618 * login, send a logout. We will change node state to UNUSED_NODE, put it
1619 * on plogi list so it can be freed when LOGO completes.
1620 *
1621 */
1622
1623 static uint32_t
1624 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1625 void *arg, uint32_t evt)
1626 {
1627 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1628
1629 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1630 spin_lock_irq(shost->host_lock);
1631 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1632 spin_unlock_irq(shost->host_lock);
1633 return ndlp->nlp_state;
1634 } else {
1635 /* software abort outstanding PLOGI */
1636 lpfc_els_abort(vport->phba, ndlp);
1637
1638 lpfc_drop_node(vport, ndlp);
1639 return NLP_STE_FREED_NODE;
1640 }
1641 }
1642
1643
1644 /*! lpfc_device_recov_prli_issue
1645 *
1646 * \pre
1647 * \post
1648 * \param phba
1649 * \param ndlp
1650 * \param arg
1651 * \param evt
1652 * \return uint32_t
1653 *
1654 * \b Description:
1655 * The routine is envoked when the state of a device is unknown, like
1656 * during a link down. We should remove the nodelist entry from the
1657 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1658 * outstanding PRLI command, then free the node entry.
1659 */
1660 static uint32_t
1661 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1662 struct lpfc_nodelist *ndlp,
1663 void *arg,
1664 uint32_t evt)
1665 {
1666 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1667 struct lpfc_hba *phba = vport->phba;
1668
1669 /* Don't do anything that will mess up processing of the
1670 * previous RSCN.
1671 */
1672 if (vport->fc_flag & FC_RSCN_DEFERRED)
1673 return ndlp->nlp_state;
1674
1675 /* software abort outstanding PRLI */
1676 lpfc_els_abort(phba, ndlp);
1677
1678 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
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_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1689 void *arg, uint32_t evt)
1690 {
1691 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1692
1693 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1694 return ndlp->nlp_state;
1695 }
1696
1697 static uint32_t
1698 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1699 void *arg, uint32_t evt)
1700 {
1701 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1702
1703 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1704 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1705 return ndlp->nlp_state;
1706 }
1707
1708 static uint32_t
1709 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1710 void *arg, uint32_t evt)
1711 {
1712 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1713
1714 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1715 return ndlp->nlp_state;
1716 }
1717
1718 static uint32_t
1719 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1720 void *arg, uint32_t evt)
1721 {
1722 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1723
1724 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1725 return ndlp->nlp_state;
1726 }
1727
1728 static uint32_t
1729 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1730 void *arg, uint32_t evt)
1731 {
1732 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1733
1734 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1735 return ndlp->nlp_state;
1736 }
1737
1738 static uint32_t
1739 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1740 struct lpfc_nodelist *ndlp,
1741 void *arg,
1742 uint32_t evt)
1743 {
1744 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1745
1746 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1747 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1748 spin_lock_irq(shost->host_lock);
1749 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1750 spin_unlock_irq(shost->host_lock);
1751 lpfc_disc_set_adisc(vport, ndlp);
1752
1753 return ndlp->nlp_state;
1754 }
1755
1756 static uint32_t
1757 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1758 void *arg, uint32_t evt)
1759 {
1760 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1761
1762 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1763 return ndlp->nlp_state;
1764 }
1765
1766 static uint32_t
1767 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1768 void *arg, uint32_t evt)
1769 {
1770 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1771
1772 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1773 return ndlp->nlp_state;
1774 }
1775
1776 static uint32_t
1777 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1778 void *arg, uint32_t evt)
1779 {
1780 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1781
1782 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1783 return ndlp->nlp_state;
1784 }
1785
1786 static uint32_t
1787 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1788 struct lpfc_nodelist *ndlp,
1789 void *arg, uint32_t evt)
1790 {
1791 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1792
1793 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1794 return ndlp->nlp_state;
1795 }
1796
1797 static uint32_t
1798 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1799 void *arg, uint32_t evt)
1800 {
1801 struct lpfc_hba *phba = vport->phba;
1802 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1803
1804 /* flush the target */
1805 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1806 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1807
1808 /* Treat like rcv logo */
1809 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1810 return ndlp->nlp_state;
1811 }
1812
1813 static uint32_t
1814 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1815 struct lpfc_nodelist *ndlp,
1816 void *arg,
1817 uint32_t evt)
1818 {
1819 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1820
1821 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1822 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1823 spin_lock_irq(shost->host_lock);
1824 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1825 spin_unlock_irq(shost->host_lock);
1826 lpfc_disc_set_adisc(vport, ndlp);
1827 return ndlp->nlp_state;
1828 }
1829
1830 static uint32_t
1831 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1832 void *arg, uint32_t evt)
1833 {
1834 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1835 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1836
1837 /* Ignore PLOGI if we have an outstanding LOGO */
1838 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1839 return ndlp->nlp_state;
1840 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1841 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1842 spin_lock_irq(shost->host_lock);
1843 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1844 spin_unlock_irq(shost->host_lock);
1845 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1846 /* send PLOGI immediately, move to PLOGI issue state */
1847 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1848 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1849 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1850 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1851 }
1852 }
1853 return ndlp->nlp_state;
1854 }
1855
1856 static uint32_t
1857 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1858 void *arg, uint32_t evt)
1859 {
1860 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1861 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1862 struct ls_rjt stat;
1863
1864 memset(&stat, 0, sizeof (struct ls_rjt));
1865 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1866 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1867 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1868
1869 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1870 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1871 spin_lock_irq(shost->host_lock);
1872 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1873 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1874 spin_unlock_irq(shost->host_lock);
1875 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1876 lpfc_issue_els_adisc(vport, ndlp, 0);
1877 } else {
1878 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1879 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1880 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1881 }
1882 }
1883 return ndlp->nlp_state;
1884 }
1885
1886 static uint32_t
1887 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1888 void *arg, uint32_t evt)
1889 {
1890 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1891
1892 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1893 return ndlp->nlp_state;
1894 }
1895
1896 static uint32_t
1897 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1898 void *arg, uint32_t evt)
1899 {
1900 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1901
1902 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1903 /*
1904 * Do not start discovery if discovery is about to start
1905 * or discovery in progress for this node. Starting discovery
1906 * here will affect the counting of discovery threads.
1907 */
1908 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1909 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1910 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1911 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1912 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1913 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1914 lpfc_issue_els_adisc(vport, ndlp, 0);
1915 } else {
1916 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1917 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1918 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1919 }
1920 }
1921 return ndlp->nlp_state;
1922 }
1923
1924 static uint32_t
1925 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1926 void *arg, uint32_t evt)
1927 {
1928 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1929 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1930
1931 spin_lock_irq(shost->host_lock);
1932 ndlp->nlp_flag |= NLP_LOGO_ACC;
1933 spin_unlock_irq(shost->host_lock);
1934
1935 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1936
1937 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1938 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1939 spin_lock_irq(shost->host_lock);
1940 ndlp->nlp_flag |= NLP_DELAY_TMO;
1941 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1942 spin_unlock_irq(shost->host_lock);
1943 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1944 } else {
1945 spin_lock_irq(shost->host_lock);
1946 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1947 spin_unlock_irq(shost->host_lock);
1948 }
1949 return ndlp->nlp_state;
1950 }
1951
1952 static uint32_t
1953 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1954 void *arg, uint32_t evt)
1955 {
1956 struct lpfc_iocbq *cmdiocb, *rspiocb;
1957 IOCB_t *irsp;
1958
1959 cmdiocb = (struct lpfc_iocbq *) arg;
1960 rspiocb = cmdiocb->context_un.rsp_iocb;
1961
1962 irsp = &rspiocb->iocb;
1963 if (irsp->ulpStatus) {
1964 ndlp->nlp_flag |= NLP_DEFER_RM;
1965 return NLP_STE_FREED_NODE;
1966 }
1967 return ndlp->nlp_state;
1968 }
1969
1970 static uint32_t
1971 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1972 void *arg, uint32_t evt)
1973 {
1974 struct lpfc_iocbq *cmdiocb, *rspiocb;
1975 IOCB_t *irsp;
1976
1977 cmdiocb = (struct lpfc_iocbq *) arg;
1978 rspiocb = cmdiocb->context_un.rsp_iocb;
1979
1980 irsp = &rspiocb->iocb;
1981 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1982 lpfc_drop_node(vport, ndlp);
1983 return NLP_STE_FREED_NODE;
1984 }
1985 return ndlp->nlp_state;
1986 }
1987
1988 static uint32_t
1989 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1990 void *arg, uint32_t evt)
1991 {
1992 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1993 if (ndlp->nlp_DID == Fabric_DID) {
1994 spin_lock_irq(shost->host_lock);
1995 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1996 spin_unlock_irq(shost->host_lock);
1997 }
1998 lpfc_unreg_rpi(vport, ndlp);
1999 return ndlp->nlp_state;
2000 }
2001
2002 static uint32_t
2003 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2004 void *arg, uint32_t evt)
2005 {
2006 struct lpfc_iocbq *cmdiocb, *rspiocb;
2007 IOCB_t *irsp;
2008
2009 cmdiocb = (struct lpfc_iocbq *) arg;
2010 rspiocb = cmdiocb->context_un.rsp_iocb;
2011
2012 irsp = &rspiocb->iocb;
2013 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2014 lpfc_drop_node(vport, ndlp);
2015 return NLP_STE_FREED_NODE;
2016 }
2017 return ndlp->nlp_state;
2018 }
2019
2020 static uint32_t
2021 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2022 struct lpfc_nodelist *ndlp,
2023 void *arg, uint32_t evt)
2024 {
2025 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2026 MAILBOX_t *mb = &pmb->u.mb;
2027
2028 if (!mb->mbxStatus) {
2029 ndlp->nlp_rpi = mb->un.varWords[0];
2030 ndlp->nlp_flag |= NLP_RPI_VALID;
2031 } else {
2032 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2033 lpfc_drop_node(vport, ndlp);
2034 return NLP_STE_FREED_NODE;
2035 }
2036 }
2037 return ndlp->nlp_state;
2038 }
2039
2040 static uint32_t
2041 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2042 void *arg, uint32_t evt)
2043 {
2044 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2045
2046 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2047 spin_lock_irq(shost->host_lock);
2048 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2049 spin_unlock_irq(shost->host_lock);
2050 return ndlp->nlp_state;
2051 }
2052 lpfc_drop_node(vport, ndlp);
2053 return NLP_STE_FREED_NODE;
2054 }
2055
2056 static uint32_t
2057 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2058 void *arg, uint32_t evt)
2059 {
2060 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2061
2062 /* Don't do anything that will mess up processing of the
2063 * previous RSCN.
2064 */
2065 if (vport->fc_flag & FC_RSCN_DEFERRED)
2066 return ndlp->nlp_state;
2067
2068 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2069 spin_lock_irq(shost->host_lock);
2070 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2071 spin_unlock_irq(shost->host_lock);
2072 return ndlp->nlp_state;
2073 }
2074
2075
2076 /* This next section defines the NPort Discovery State Machine */
2077
2078 /* There are 4 different double linked lists nodelist entries can reside on.
2079 * The plogi list and adisc list are used when Link Up discovery or RSCN
2080 * processing is needed. Each list holds the nodes that we will send PLOGI
2081 * or ADISC on. These lists will keep track of what nodes will be effected
2082 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2083 * The unmapped_list will contain all nodes that we have successfully logged
2084 * into at the Fibre Channel level. The mapped_list will contain all nodes
2085 * that are mapped FCP targets.
2086 */
2087 /*
2088 * The bind list is a list of undiscovered (potentially non-existent) nodes
2089 * that we have saved binding information on. This information is used when
2090 * nodes transition from the unmapped to the mapped list.
2091 */
2092 /* For UNUSED_NODE state, the node has just been allocated .
2093 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2094 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2095 * and put on the unmapped list. For ADISC processing, the node is taken off
2096 * the ADISC list and placed on either the mapped or unmapped list (depending
2097 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2098 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2099 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2100 * node, the node is taken off the unmapped list. The binding list is checked
2101 * for a valid binding, or a binding is automatically assigned. If binding
2102 * assignment is unsuccessful, the node is left on the unmapped list. If
2103 * binding assignment is successful, the associated binding list entry (if
2104 * any) is removed, and the node is placed on the mapped list.
2105 */
2106 /*
2107 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2108 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2109 * expire, all effected nodes will receive a DEVICE_RM event.
2110 */
2111 /*
2112 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2113 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2114 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2115 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2116 * we will first process the ADISC list. 32 entries are processed initially and
2117 * ADISC is initited for each one. Completions / Events for each node are
2118 * funnelled thru the state machine. As each node finishes ADISC processing, it
2119 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2120 * waiting, and the ADISC list count is identically 0, then we are done. For
2121 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2122 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2123 * list. 32 entries are processed initially and PLOGI is initited for each one.
2124 * Completions / Events for each node are funnelled thru the state machine. As
2125 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2126 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2127 * indentically 0, then we are done. We have now completed discovery / RSCN
2128 * handling. Upon completion, ALL nodes should be on either the mapped or
2129 * unmapped lists.
2130 */
2131
2132 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2133 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2134 /* Action routine Event Current State */
2135 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2136 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2137 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2138 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2139 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2140 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2141 lpfc_disc_illegal, /* CMPL_PLOGI */
2142 lpfc_disc_illegal, /* CMPL_PRLI */
2143 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2144 lpfc_disc_illegal, /* CMPL_ADISC */
2145 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2146 lpfc_device_rm_unused_node, /* DEVICE_RM */
2147 lpfc_disc_illegal, /* DEVICE_RECOVERY */
2148
2149 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2150 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2151 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2152 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2153 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2154 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2155 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2156 lpfc_disc_illegal, /* CMPL_PRLI */
2157 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2158 lpfc_disc_illegal, /* CMPL_ADISC */
2159 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2160 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2161 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2162
2163 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2164 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2165 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2166 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2167 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2168 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2169 lpfc_disc_illegal, /* CMPL_PLOGI */
2170 lpfc_disc_illegal, /* CMPL_PRLI */
2171 lpfc_disc_illegal, /* CMPL_LOGO */
2172 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2173 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2174 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2175 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2176
2177 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2178 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2179 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2180 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2181 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2182 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2183 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2184 lpfc_disc_illegal, /* CMPL_PRLI */
2185 lpfc_disc_illegal, /* CMPL_LOGO */
2186 lpfc_disc_illegal, /* CMPL_ADISC */
2187 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2188 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2189 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2190
2191 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2192 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2193 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2194 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2195 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2196 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2197 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2198 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2199 lpfc_disc_illegal, /* CMPL_LOGO */
2200 lpfc_disc_illegal, /* CMPL_ADISC */
2201 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2202 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2203 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2204
2205 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2206 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2207 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2208 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2209 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2210 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2211 lpfc_disc_illegal, /* CMPL_PLOGI */
2212 lpfc_disc_illegal, /* CMPL_PRLI */
2213 lpfc_disc_illegal, /* CMPL_LOGO */
2214 lpfc_disc_illegal, /* CMPL_ADISC */
2215 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2216 lpfc_disc_illegal, /* DEVICE_RM */
2217 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2218
2219 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2220 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2221 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2222 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2223 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2224 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2225 lpfc_disc_illegal, /* CMPL_PLOGI */
2226 lpfc_disc_illegal, /* CMPL_PRLI */
2227 lpfc_disc_illegal, /* CMPL_LOGO */
2228 lpfc_disc_illegal, /* CMPL_ADISC */
2229 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2230 lpfc_disc_illegal, /* DEVICE_RM */
2231 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2232
2233 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2234 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2235 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2236 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2237 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2238 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2239 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2240 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2241 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2242 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2243 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2244 lpfc_device_rm_npr_node, /* DEVICE_RM */
2245 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2246 };
2247
2248 int
2249 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2250 void *arg, uint32_t evt)
2251 {
2252 uint32_t cur_state, rc;
2253 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2254 uint32_t);
2255 uint32_t got_ndlp = 0;
2256
2257 if (lpfc_nlp_get(ndlp))
2258 got_ndlp = 1;
2259
2260 cur_state = ndlp->nlp_state;
2261
2262 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2263 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2264 "0211 DSM in event x%x on NPort x%x in "
2265 "state %d Data: x%x\n",
2266 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2267
2268 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2269 "DSM in: evt:%d ste:%d did:x%x",
2270 evt, cur_state, ndlp->nlp_DID);
2271
2272 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2273 rc = (func) (vport, ndlp, arg, evt);
2274
2275 /* DSM out state <rc> on NPort <nlp_DID> */
2276 if (got_ndlp) {
2277 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2278 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2279 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2280
2281 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2282 "DSM out: ste:%d did:x%x flg:x%x",
2283 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2284 /* Decrement the ndlp reference count held for this function */
2285 lpfc_nlp_put(ndlp);
2286 } else {
2287 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2288 "0213 DSM out state %d on NPort free\n", rc);
2289
2290 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2291 "DSM out: ste:%d did:x%x flg:x%x",
2292 rc, 0, 0);
2293 }
2294
2295 return rc;
2296 }
Tomato firmware and modifications.