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drivers/staging/usbip/userspace/libsrc/vhci_driver.c: test the just-initialized value
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
blob2ddd02f7c60336130e90f8a0eb5f0ba230484451
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2009 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/interrupt.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport_fc.h>
31
32 #include "lpfc_hw4.h"
33 #include "lpfc_hw.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_sli4.h"
36 #include "lpfc_nl.h"
37 #include "lpfc_disc.h"
38 #include "lpfc_scsi.h"
39 #include "lpfc.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_crtn.h"
42 #include "lpfc_vport.h"
43 #include "lpfc_debugfs.h"
44
45
46 /* Called to verify a rcv'ed ADISC was intended for us. */
47 static int
48 lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
49 struct lpfc_name *nn, struct lpfc_name *pn)
50 {
51 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
52 * table entry for that node.
53 */
54 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
55 return 0;
56
57 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
58 return 0;
59
60 /* we match, return success */
61 return 1;
62 }
63
64 int
65 lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
66 struct serv_parm *sp, uint32_t class, int flogi)
67 {
68 volatile struct serv_parm *hsp = &vport->fc_sparam;
69 uint16_t hsp_value, ssp_value = 0;
70
71 /*
72 * The receive data field size and buffer-to-buffer receive data field
73 * size entries are 16 bits but are represented as two 8-bit fields in
74 * the driver data structure to account for rsvd bits and other control
75 * bits. Reconstruct and compare the fields as a 16-bit values before
76 * correcting the byte values.
77 */
78 if (sp->cls1.classValid) {
79 if (!flogi) {
80 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
81 hsp->cls1.rcvDataSizeLsb);
82 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
83 sp->cls1.rcvDataSizeLsb);
84 if (!ssp_value)
85 goto bad_service_param;
86 if (ssp_value > hsp_value) {
87 sp->cls1.rcvDataSizeLsb =
88 hsp->cls1.rcvDataSizeLsb;
89 sp->cls1.rcvDataSizeMsb =
90 hsp->cls1.rcvDataSizeMsb;
91 }
92 }
93 } else if (class == CLASS1)
94 goto bad_service_param;
95 if (sp->cls2.classValid) {
96 if (!flogi) {
97 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
98 hsp->cls2.rcvDataSizeLsb);
99 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
100 sp->cls2.rcvDataSizeLsb);
101 if (!ssp_value)
102 goto bad_service_param;
103 if (ssp_value > hsp_value) {
104 sp->cls2.rcvDataSizeLsb =
105 hsp->cls2.rcvDataSizeLsb;
106 sp->cls2.rcvDataSizeMsb =
107 hsp->cls2.rcvDataSizeMsb;
108 }
109 }
110 } else if (class == CLASS2)
111 goto bad_service_param;
112 if (sp->cls3.classValid) {
113 if (!flogi) {
114 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
115 hsp->cls3.rcvDataSizeLsb);
116 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
117 sp->cls3.rcvDataSizeLsb);
118 if (!ssp_value)
119 goto bad_service_param;
120 if (ssp_value > hsp_value) {
121 sp->cls3.rcvDataSizeLsb =
122 hsp->cls3.rcvDataSizeLsb;
123 sp->cls3.rcvDataSizeMsb =
124 hsp->cls3.rcvDataSizeMsb;
125 }
126 }
127 } else if (class == CLASS3)
128 goto bad_service_param;
129
130 /*
131 * Preserve the upper four bits of the MSB from the PLOGI response.
132 * These bits contain the Buffer-to-Buffer State Change Number
133 * from the target and need to be passed to the FW.
134 */
135 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
136 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
137 if (ssp_value > hsp_value) {
138 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
139 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
140 (hsp->cmn.bbRcvSizeMsb & 0x0F);
141 }
142
143 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
144 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
145 return 1;
146 bad_service_param:
147 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
148 "0207 Device %x "
149 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
150 "invalid service parameters. Ignoring device.\n",
151 ndlp->nlp_DID,
152 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
153 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
154 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
155 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
156 return 0;
157 }
158
159 static void *
160 lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
161 struct lpfc_iocbq *rspiocb)
162 {
163 struct lpfc_dmabuf *pcmd, *prsp;
164 uint32_t *lp;
165 void *ptr = NULL;
166 IOCB_t *irsp;
167
168 irsp = &rspiocb->iocb;
169 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
170
171 /* For lpfc_els_abort, context2 could be zero'ed to delay
172 * freeing associated memory till after ABTS completes.
173 */
174 if (pcmd) {
175 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
176 list);
177 if (prsp) {
178 lp = (uint32_t *) prsp->virt;
179 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
180 }
181 } else {
182 /* Force ulpStatus error since we are returning NULL ptr */
183 if (!(irsp->ulpStatus)) {
184 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
185 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
186 }
187 ptr = NULL;
188 }
189 return ptr;
190 }
191
192
193
194 /*
195 * Free resources / clean up outstanding I/Os
196 * associated with a LPFC_NODELIST entry. This
197 * routine effectively results in a "software abort".
198 */
199 int
200 lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
201 {
202 LIST_HEAD(completions);
203 LIST_HEAD(txcmplq_completions);
204 LIST_HEAD(abort_list);
205 struct lpfc_sli *psli = &phba->sli;
206 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
207 struct lpfc_iocbq *iocb, *next_iocb;
208
209 /* Abort outstanding I/O on NPort <nlp_DID> */
210 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
211 "2819 Abort outstanding I/O on NPort x%x "
212 "Data: x%x x%x x%x\n",
213 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
214 ndlp->nlp_rpi);
215
216 lpfc_fabric_abort_nport(ndlp);
217
218 /* First check the txq */
219 spin_lock_irq(&phba->hbalock);
220 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
221 /* Check to see if iocb matches the nport we are looking for */
222 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
223 /* It matches, so deque and call compl with anp error */
224 list_move_tail(&iocb->list, &completions);
225 pring->txq_cnt--;
226 }
227 }
228
229 /* Next check the txcmplq */
230 list_splice_init(&pring->txcmplq, &txcmplq_completions);
231 spin_unlock_irq(&phba->hbalock);
232
233 list_for_each_entry_safe(iocb, next_iocb, &txcmplq_completions, list) {
234 /* Check to see if iocb matches the nport we are looking for */
235 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
236 list_add_tail(&iocb->dlist, &abort_list);
237 }
238 spin_lock_irq(&phba->hbalock);
239 list_splice(&txcmplq_completions, &pring->txcmplq);
240 spin_unlock_irq(&phba->hbalock);
241
242 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
243 spin_lock_irq(&phba->hbalock);
244 list_del_init(&iocb->dlist);
245 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
246 spin_unlock_irq(&phba->hbalock);
247 }
248
249 /* Cancel all the IOCBs from the completions list */
250 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
251 IOERR_SLI_ABORTED);
252
253 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
254 return 0;
255 }
256
257 static int
258 lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
259 struct lpfc_iocbq *cmdiocb)
260 {
261 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
262 struct lpfc_hba *phba = vport->phba;
263 struct lpfc_dmabuf *pcmd;
264 uint32_t *lp;
265 IOCB_t *icmd;
266 struct serv_parm *sp;
267 LPFC_MBOXQ_t *mbox;
268 struct ls_rjt stat;
269 int rc;
270
271 memset(&stat, 0, sizeof (struct ls_rjt));
272 if (vport->port_state <= LPFC_FDISC) {
273 /* Before responding to PLOGI, check for pt2pt mode.
274 * If we are pt2pt, with an outstanding FLOGI, abort
275 * the FLOGI and resend it first.
276 */
277 if (vport->fc_flag & FC_PT2PT) {
278 lpfc_els_abort_flogi(phba);
279 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
280 /* If the other side is supposed to initiate
281 * the PLOGI anyway, just ACC it now and
282 * move on with discovery.
283 */
284 phba->fc_edtov = FF_DEF_EDTOV;
285 phba->fc_ratov = FF_DEF_RATOV;
286 /* Start discovery - this should just do
287 CLEAR_LA */
288 lpfc_disc_start(vport);
289 } else
290 lpfc_initial_flogi(vport);
291 } else {
292 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
293 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
294 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
295 ndlp, NULL);
296 return 0;
297 }
298 }
299 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
300 lp = (uint32_t *) pcmd->virt;
301 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
302 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
303 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
304 "0140 PLOGI Reject: invalid nname\n");
305 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
306 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
307 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
308 NULL);
309 return 0;
310 }
311 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
312 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
313 "0141 PLOGI Reject: invalid pname\n");
314 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
315 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
316 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
317 NULL);
318 return 0;
319 }
320 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
321 /* Reject this request because invalid parameters */
322 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
323 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
324 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
325 NULL);
326 return 0;
327 }
328 icmd = &cmdiocb->iocb;
329
330 /* PLOGI chkparm OK */
331 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
332 "0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
333 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
334 ndlp->nlp_rpi);
335
336 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
337 ndlp->nlp_fcp_info |= CLASS2;
338 else
339 ndlp->nlp_fcp_info |= CLASS3;
340
341 ndlp->nlp_class_sup = 0;
342 if (sp->cls1.classValid)
343 ndlp->nlp_class_sup |= FC_COS_CLASS1;
344 if (sp->cls2.classValid)
345 ndlp->nlp_class_sup |= FC_COS_CLASS2;
346 if (sp->cls3.classValid)
347 ndlp->nlp_class_sup |= FC_COS_CLASS3;
348 if (sp->cls4.classValid)
349 ndlp->nlp_class_sup |= FC_COS_CLASS4;
350 ndlp->nlp_maxframe =
351 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
352
353 /* no need to reg_login if we are already in one of these states */
354 switch (ndlp->nlp_state) {
355 case NLP_STE_NPR_NODE:
356 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
357 break;
358 case NLP_STE_REG_LOGIN_ISSUE:
359 case NLP_STE_PRLI_ISSUE:
360 case NLP_STE_UNMAPPED_NODE:
361 case NLP_STE_MAPPED_NODE:
362 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
363 return 1;
364 }
365
366 if ((vport->fc_flag & FC_PT2PT) &&
367 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
368 /* rcv'ed PLOGI decides what our NPortId will be */
369 vport->fc_myDID = icmd->un.rcvels.parmRo;
370 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
371 if (mbox == NULL)
372 goto out;
373 lpfc_config_link(phba, mbox);
374 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
375 mbox->vport = vport;
376 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
377 if (rc == MBX_NOT_FINISHED) {
378 mempool_free(mbox, phba->mbox_mem_pool);
379 goto out;
380 }
381
382 lpfc_can_disctmo(vport);
383 }
384 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
385 if (!mbox)
386 goto out;
387
388 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
389 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
390 if (rc) {
391 mempool_free(mbox, phba->mbox_mem_pool);
392 goto out;
393 }
394
395 /* ACC PLOGI rsp command needs to execute first,
396 * queue this mbox command to be processed later.
397 */
398 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
399 /*
400 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
401 * command issued in lpfc_cmpl_els_acc().
402 */
403 mbox->vport = vport;
404 spin_lock_irq(shost->host_lock);
405 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
406 spin_unlock_irq(shost->host_lock);
407
408 /*
409 * If there is an outstanding PLOGI issued, abort it before
410 * sending ACC rsp for received PLOGI. If pending plogi
411 * is not canceled here, the plogi will be rejected by
412 * remote port and will be retried. On a configuration with
413 * single discovery thread, this will cause a huge delay in
414 * discovery. Also this will cause multiple state machines
415 * running in parallel for this node.
416 */
417 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
418 /* software abort outstanding PLOGI */
419 lpfc_els_abort(phba, ndlp);
420 }
421
422 if ((vport->port_type == LPFC_NPIV_PORT &&
423 vport->cfg_restrict_login)) {
424
425 /* In order to preserve RPIs, we want to cleanup
426 * the default RPI the firmware created to rcv
427 * this ELS request. The only way to do this is
428 * to register, then unregister the RPI.
429 */
430 spin_lock_irq(shost->host_lock);
431 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
432 spin_unlock_irq(shost->host_lock);
433 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
434 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
435 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
436 ndlp, mbox);
437 return 1;
438 }
439 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
440 return 1;
441 out:
442 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
443 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
444 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
445 return 0;
446 }
447
448 static int
449 lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
450 struct lpfc_iocbq *cmdiocb)
451 {
452 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
453 struct lpfc_dmabuf *pcmd;
454 struct serv_parm *sp;
455 struct lpfc_name *pnn, *ppn;
456 struct ls_rjt stat;
457 ADISC *ap;
458 IOCB_t *icmd;
459 uint32_t *lp;
460 uint32_t cmd;
461
462 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
463 lp = (uint32_t *) pcmd->virt;
464
465 cmd = *lp++;
466 if (cmd == ELS_CMD_ADISC) {
467 ap = (ADISC *) lp;
468 pnn = (struct lpfc_name *) & ap->nodeName;
469 ppn = (struct lpfc_name *) & ap->portName;
470 } else {
471 sp = (struct serv_parm *) lp;
472 pnn = (struct lpfc_name *) & sp->nodeName;
473 ppn = (struct lpfc_name *) & sp->portName;
474 }
475
476 icmd = &cmdiocb->iocb;
477 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
478 if (cmd == ELS_CMD_ADISC) {
479 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
480 } else {
481 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
482 NULL);
483 }
484 return 1;
485 }
486 /* Reject this request because invalid parameters */
487 stat.un.b.lsRjtRsvd0 = 0;
488 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
489 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
490 stat.un.b.vendorUnique = 0;
491 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
492
493 /* 1 sec timeout */
494 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
495
496 spin_lock_irq(shost->host_lock);
497 ndlp->nlp_flag |= NLP_DELAY_TMO;
498 spin_unlock_irq(shost->host_lock);
499 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
500 ndlp->nlp_prev_state = ndlp->nlp_state;
501 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
502 return 0;
503 }
504
505 static int
506 lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
507 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
508 {
509 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
510 struct lpfc_hba *phba = vport->phba;
511 struct lpfc_vport **vports;
512 int i, active_vlink_present = 0 ;
513
514 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
515 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
516 * PLOGIs during LOGO storms from a device.
517 */
518 spin_lock_irq(shost->host_lock);
519 ndlp->nlp_flag |= NLP_LOGO_ACC;
520 spin_unlock_irq(shost->host_lock);
521 if (els_cmd == ELS_CMD_PRLO)
522 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
523 else
524 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
525 if (ndlp->nlp_DID == Fabric_DID) {
526 if (vport->port_state <= LPFC_FDISC)
527 goto out;
528 lpfc_linkdown_port(vport);
529 spin_lock_irq(shost->host_lock);
530 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
531 spin_unlock_irq(shost->host_lock);
532 vports = lpfc_create_vport_work_array(phba);
533 if (vports) {
534 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
535 i++) {
536 if ((!(vports[i]->fc_flag &
537 FC_VPORT_LOGO_RCVD)) &&
538 (vports[i]->port_state > LPFC_FDISC)) {
539 active_vlink_present = 1;
540 break;
541 }
542 }
543 lpfc_destroy_vport_work_array(phba, vports);
544 }
545
546 if (active_vlink_present) {
547 /*
548 * If there are other active VLinks present,
549 * re-instantiate the Vlink using FDISC.
550 */
551 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
552 spin_lock_irq(shost->host_lock);
553 ndlp->nlp_flag |= NLP_DELAY_TMO;
554 spin_unlock_irq(shost->host_lock);
555 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
556 vport->port_state = LPFC_FDISC;
557 } else {
558 spin_lock_irq(shost->host_lock);
559 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
560 spin_unlock_irq(shost->host_lock);
561 lpfc_retry_pport_discovery(phba);
562 }
563 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
564 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
565 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
566 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
567 /* Only try to re-login if this is NOT a Fabric Node */
568 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
569 spin_lock_irq(shost->host_lock);
570 ndlp->nlp_flag |= NLP_DELAY_TMO;
571 spin_unlock_irq(shost->host_lock);
572
573 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
574 }
575 out:
576 ndlp->nlp_prev_state = ndlp->nlp_state;
577 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
578
579 spin_lock_irq(shost->host_lock);
580 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
581 spin_unlock_irq(shost->host_lock);
582 /* The driver has to wait until the ACC completes before it continues
583 * processing the LOGO. The action will resume in
584 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
585 * unreg_login, the driver waits so the ACC does not get aborted.
586 */
587 return 0;
588 }
589
590 static void
591 lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
592 struct lpfc_iocbq *cmdiocb)
593 {
594 struct lpfc_dmabuf *pcmd;
595 uint32_t *lp;
596 PRLI *npr;
597 struct fc_rport *rport = ndlp->rport;
598 u32 roles;
599
600 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
601 lp = (uint32_t *) pcmd->virt;
602 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
603
604 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
605 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
606 if (npr->prliType == PRLI_FCP_TYPE) {
607 if (npr->initiatorFunc)
608 ndlp->nlp_type |= NLP_FCP_INITIATOR;
609 if (npr->targetFunc)
610 ndlp->nlp_type |= NLP_FCP_TARGET;
611 if (npr->Retry)
612 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
613 }
614 if (rport) {
615 /* We need to update the rport role values */
616 roles = FC_RPORT_ROLE_UNKNOWN;
617 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
618 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
619 if (ndlp->nlp_type & NLP_FCP_TARGET)
620 roles |= FC_RPORT_ROLE_FCP_TARGET;
621
622 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
623 "rport rolechg: role:x%x did:x%x flg:x%x",
624 roles, ndlp->nlp_DID, ndlp->nlp_flag);
625
626 fc_remote_port_rolechg(rport, roles);
627 }
628 }
629
630 static uint32_t
631 lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
632 {
633 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
634
635 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
636 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
637 return 0;
638 }
639
640 if (!(vport->fc_flag & FC_PT2PT)) {
641 /* Check config parameter use-adisc or FCP-2 */
642 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
643 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
644 (ndlp->nlp_type & NLP_FCP_TARGET))) {
645 spin_lock_irq(shost->host_lock);
646 ndlp->nlp_flag |= NLP_NPR_ADISC;
647 spin_unlock_irq(shost->host_lock);
648 return 1;
649 }
650 }
651 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
652 lpfc_unreg_rpi(vport, ndlp);
653 return 0;
654 }
655
656 /**
657 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
658 * @phba : Pointer to lpfc_hba structure.
659 * @vport: Pointer to lpfc_vport structure.
660 * @rpi : rpi to be release.
661 *
662 * This function will send a unreg_login mailbox command to the firmware
663 * to release a rpi.
664 **/
665 void
666 lpfc_release_rpi(struct lpfc_hba *phba,
667 struct lpfc_vport *vport,
668 uint16_t rpi)
669 {
670 LPFC_MBOXQ_t *pmb;
671 int rc;
672
673 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
674 GFP_KERNEL);
675 if (!pmb)
676 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
677 "2796 mailbox memory allocation failed \n");
678 else {
679 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
680 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
681 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
682 if (rc == MBX_NOT_FINISHED)
683 mempool_free(pmb, phba->mbox_mem_pool);
684 }
685 }
686
687 static uint32_t
688 lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
689 void *arg, uint32_t evt)
690 {
691 struct lpfc_hba *phba;
692 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
693 MAILBOX_t *mb;
694 uint16_t rpi;
695
696 phba = vport->phba;
697 /* Release the RPI if reglogin completing */
698 if (!(phba->pport->load_flag & FC_UNLOADING) &&
699 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
700 (!pmb->u.mb.mbxStatus)) {
701 mb = &pmb->u.mb;
702 rpi = pmb->u.mb.un.varWords[0];
703 lpfc_release_rpi(phba, vport, rpi);
704 }
705 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
706 "0271 Illegal State Transition: node x%x "
707 "event x%x, state x%x Data: x%x x%x\n",
708 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
709 ndlp->nlp_flag);
710 return ndlp->nlp_state;
711 }
712
713 static uint32_t
714 lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
715 void *arg, uint32_t evt)
716 {
717 /* This transition is only legal if we previously
718 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
719 * working on the same NPortID, do nothing for this thread
720 * to stop it.
721 */
722 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
723 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
724 "0272 Illegal State Transition: node x%x "
725 "event x%x, state x%x Data: x%x x%x\n",
726 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
727 ndlp->nlp_flag);
728 }
729 return ndlp->nlp_state;
730 }
731
732 /* Start of Discovery State Machine routines */
733
734 static uint32_t
735 lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
736 void *arg, uint32_t evt)
737 {
738 struct lpfc_iocbq *cmdiocb;
739
740 cmdiocb = (struct lpfc_iocbq *) arg;
741
742 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
743 return ndlp->nlp_state;
744 }
745 return NLP_STE_FREED_NODE;
746 }
747
748 static uint32_t
749 lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
750 void *arg, uint32_t evt)
751 {
752 lpfc_issue_els_logo(vport, ndlp, 0);
753 return ndlp->nlp_state;
754 }
755
756 static uint32_t
757 lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
758 void *arg, uint32_t evt)
759 {
760 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
761 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
762
763 spin_lock_irq(shost->host_lock);
764 ndlp->nlp_flag |= NLP_LOGO_ACC;
765 spin_unlock_irq(shost->host_lock);
766 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
767
768 return ndlp->nlp_state;
769 }
770
771 static uint32_t
772 lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
773 void *arg, uint32_t evt)
774 {
775 return NLP_STE_FREED_NODE;
776 }
777
778 static uint32_t
779 lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
780 void *arg, uint32_t evt)
781 {
782 return NLP_STE_FREED_NODE;
783 }
784
785 static uint32_t
786 lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
787 void *arg, uint32_t evt)
788 {
789 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
790 struct lpfc_hba *phba = vport->phba;
791 struct lpfc_iocbq *cmdiocb = arg;
792 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
793 uint32_t *lp = (uint32_t *) pcmd->virt;
794 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
795 struct ls_rjt stat;
796 int port_cmp;
797
798 memset(&stat, 0, sizeof (struct ls_rjt));
799
800 /* For a PLOGI, we only accept if our portname is less
801 * than the remote portname.
802 */
803 phba->fc_stat.elsLogiCol++;
804 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
805 sizeof(struct lpfc_name));
806
807 if (port_cmp >= 0) {
808 /* Reject this request because the remote node will accept
809 ours */
810 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
811 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
812 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
813 NULL);
814 } else {
815 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
816 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
817 (vport->num_disc_nodes)) {
818 spin_lock_irq(shost->host_lock);
819 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
820 spin_unlock_irq(shost->host_lock);
821 /* Check if there are more PLOGIs to be sent */
822 lpfc_more_plogi(vport);
823 if (vport->num_disc_nodes == 0) {
824 spin_lock_irq(shost->host_lock);
825 vport->fc_flag &= ~FC_NDISC_ACTIVE;
826 spin_unlock_irq(shost->host_lock);
827 lpfc_can_disctmo(vport);
828 lpfc_end_rscn(vport);
829 }
830 }
831 } /* If our portname was less */
832
833 return ndlp->nlp_state;
834 }
835
836 static uint32_t
837 lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
838 void *arg, uint32_t evt)
839 {
840 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
841 struct ls_rjt stat;
842
843 memset(&stat, 0, sizeof (struct ls_rjt));
844 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
845 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
846 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
847 return ndlp->nlp_state;
848 }
849
850 static uint32_t
851 lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
852 void *arg, uint32_t evt)
853 {
854 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
855
856 /* software abort outstanding PLOGI */
857 lpfc_els_abort(vport->phba, ndlp);
858
859 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
860 return ndlp->nlp_state;
861 }
862
863 static uint32_t
864 lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
865 void *arg, uint32_t evt)
866 {
867 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
868 struct lpfc_hba *phba = vport->phba;
869 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
870
871 /* software abort outstanding PLOGI */
872 lpfc_els_abort(phba, ndlp);
873
874 if (evt == NLP_EVT_RCV_LOGO) {
875 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
876 } else {
877 lpfc_issue_els_logo(vport, ndlp, 0);
878 }
879
880 /* Put ndlp in npr state set plogi timer for 1 sec */
881 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
882 spin_lock_irq(shost->host_lock);
883 ndlp->nlp_flag |= NLP_DELAY_TMO;
884 spin_unlock_irq(shost->host_lock);
885 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
886 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
887 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
888
889 return ndlp->nlp_state;
890 }
891
892 static uint32_t
893 lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
894 struct lpfc_nodelist *ndlp,
895 void *arg,
896 uint32_t evt)
897 {
898 struct lpfc_hba *phba = vport->phba;
899 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
900 struct lpfc_iocbq *cmdiocb, *rspiocb;
901 struct lpfc_dmabuf *pcmd, *prsp, *mp;
902 uint32_t *lp;
903 IOCB_t *irsp;
904 struct serv_parm *sp;
905 LPFC_MBOXQ_t *mbox;
906
907 cmdiocb = (struct lpfc_iocbq *) arg;
908 rspiocb = cmdiocb->context_un.rsp_iocb;
909
910 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
911 /* Recovery from PLOGI collision logic */
912 return ndlp->nlp_state;
913 }
914
915 irsp = &rspiocb->iocb;
916
917 if (irsp->ulpStatus)
918 goto out;
919
920 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
921
922 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
923
924 lp = (uint32_t *) prsp->virt;
925 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
926
927 /* Some switches have FDMI servers returning 0 for WWN */
928 if ((ndlp->nlp_DID != FDMI_DID) &&
929 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
930 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
931 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
932 "0142 PLOGI RSP: Invalid WWN.\n");
933 goto out;
934 }
935 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
936 goto out;
937 /* PLOGI chkparm OK */
938 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
939 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
940 ndlp->nlp_DID, ndlp->nlp_state,
941 ndlp->nlp_flag, ndlp->nlp_rpi);
942 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
943 ndlp->nlp_fcp_info |= CLASS2;
944 else
945 ndlp->nlp_fcp_info |= CLASS3;
946
947 ndlp->nlp_class_sup = 0;
948 if (sp->cls1.classValid)
949 ndlp->nlp_class_sup |= FC_COS_CLASS1;
950 if (sp->cls2.classValid)
951 ndlp->nlp_class_sup |= FC_COS_CLASS2;
952 if (sp->cls3.classValid)
953 ndlp->nlp_class_sup |= FC_COS_CLASS3;
954 if (sp->cls4.classValid)
955 ndlp->nlp_class_sup |= FC_COS_CLASS4;
956 ndlp->nlp_maxframe =
957 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
958
959 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
960 if (!mbox) {
961 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
962 "0133 PLOGI: no memory for reg_login "
963 "Data: x%x x%x x%x x%x\n",
964 ndlp->nlp_DID, ndlp->nlp_state,
965 ndlp->nlp_flag, ndlp->nlp_rpi);
966 goto out;
967 }
968
969 lpfc_unreg_rpi(vport, ndlp);
970
971 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
972 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
973 switch (ndlp->nlp_DID) {
974 case NameServer_DID:
975 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
976 break;
977 case FDMI_DID:
978 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
979 break;
980 default:
981 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
982 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
983 }
984 mbox->context2 = lpfc_nlp_get(ndlp);
985 mbox->vport = vport;
986 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
987 != MBX_NOT_FINISHED) {
988 lpfc_nlp_set_state(vport, ndlp,
989 NLP_STE_REG_LOGIN_ISSUE);
990 return ndlp->nlp_state;
991 }
992 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
993 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
994 /* decrement node reference count to the failed mbox
995 * command
996 */
997 lpfc_nlp_put(ndlp);
998 mp = (struct lpfc_dmabuf *) mbox->context1;
999 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1000 kfree(mp);
1001 mempool_free(mbox, phba->mbox_mem_pool);
1002
1003 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1004 "0134 PLOGI: cannot issue reg_login "
1005 "Data: x%x x%x x%x x%x\n",
1006 ndlp->nlp_DID, ndlp->nlp_state,
1007 ndlp->nlp_flag, ndlp->nlp_rpi);
1008 } else {
1009 mempool_free(mbox, phba->mbox_mem_pool);
1010
1011 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1012 "0135 PLOGI: cannot format reg_login "
1013 "Data: x%x x%x x%x x%x\n",
1014 ndlp->nlp_DID, ndlp->nlp_state,
1015 ndlp->nlp_flag, ndlp->nlp_rpi);
1016 }
1017
1018
1019 out:
1020 if (ndlp->nlp_DID == NameServer_DID) {
1021 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
1022 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1023 "0261 Cannot Register NameServer login\n");
1024 }
1025
1026 spin_lock_irq(shost->host_lock);
1027 ndlp->nlp_flag |= NLP_DEFER_RM;
1028 spin_unlock_irq(shost->host_lock);
1029 return NLP_STE_FREED_NODE;
1030 }
1031
1032 static uint32_t
1033 lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1034 void *arg, uint32_t evt)
1035 {
1036 return ndlp->nlp_state;
1037 }
1038
1039 static uint32_t
1040 lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1041 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1042 {
1043 struct lpfc_hba *phba;
1044 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1045 MAILBOX_t *mb = &pmb->u.mb;
1046 uint16_t rpi;
1047
1048 phba = vport->phba;
1049 /* Release the RPI */
1050 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1051 !mb->mbxStatus) {
1052 rpi = pmb->u.mb.un.varWords[0];
1053 lpfc_release_rpi(phba, vport, rpi);
1054 }
1055 return ndlp->nlp_state;
1056 }
1057
1058 static uint32_t
1059 lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1060 void *arg, uint32_t evt)
1061 {
1062 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1063
1064 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1065 spin_lock_irq(shost->host_lock);
1066 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1067 spin_unlock_irq(shost->host_lock);
1068 return ndlp->nlp_state;
1069 } else {
1070 /* software abort outstanding PLOGI */
1071 lpfc_els_abort(vport->phba, ndlp);
1072
1073 lpfc_drop_node(vport, ndlp);
1074 return NLP_STE_FREED_NODE;
1075 }
1076 }
1077
1078 static uint32_t
1079 lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1080 struct lpfc_nodelist *ndlp,
1081 void *arg,
1082 uint32_t evt)
1083 {
1084 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1085 struct lpfc_hba *phba = vport->phba;
1086
1087 /* Don't do anything that will mess up processing of the
1088 * previous RSCN.
1089 */
1090 if (vport->fc_flag & FC_RSCN_DEFERRED)
1091 return ndlp->nlp_state;
1092
1093 /* software abort outstanding PLOGI */
1094 lpfc_els_abort(phba, ndlp);
1095
1096 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
1097 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1098 spin_lock_irq(shost->host_lock);
1099 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1100 spin_unlock_irq(shost->host_lock);
1101
1102 return ndlp->nlp_state;
1103 }
1104
1105 static uint32_t
1106 lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1107 void *arg, uint32_t evt)
1108 {
1109 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1110 struct lpfc_hba *phba = vport->phba;
1111 struct lpfc_iocbq *cmdiocb;
1112
1113 /* software abort outstanding ADISC */
1114 lpfc_els_abort(phba, ndlp);
1115
1116 cmdiocb = (struct lpfc_iocbq *) arg;
1117
1118 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1119 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1120 spin_lock_irq(shost->host_lock);
1121 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1122 spin_unlock_irq(shost->host_lock);
1123 if (vport->num_disc_nodes)
1124 lpfc_more_adisc(vport);
1125 }
1126 return ndlp->nlp_state;
1127 }
1128 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1129 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1130 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1131
1132 return ndlp->nlp_state;
1133 }
1134
1135 static uint32_t
1136 lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1137 void *arg, uint32_t evt)
1138 {
1139 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1140
1141 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1142 return ndlp->nlp_state;
1143 }
1144
1145 static uint32_t
1146 lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1147 void *arg, uint32_t evt)
1148 {
1149 struct lpfc_hba *phba = vport->phba;
1150 struct lpfc_iocbq *cmdiocb;
1151
1152 cmdiocb = (struct lpfc_iocbq *) arg;
1153
1154 /* software abort outstanding ADISC */
1155 lpfc_els_abort(phba, ndlp);
1156
1157 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1158 return ndlp->nlp_state;
1159 }
1160
1161 static uint32_t
1162 lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1163 struct lpfc_nodelist *ndlp,
1164 void *arg, uint32_t evt)
1165 {
1166 struct lpfc_iocbq *cmdiocb;
1167
1168 cmdiocb = (struct lpfc_iocbq *) arg;
1169
1170 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1171 return ndlp->nlp_state;
1172 }
1173
1174 static uint32_t
1175 lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1176 void *arg, uint32_t evt)
1177 {
1178 struct lpfc_iocbq *cmdiocb;
1179
1180 cmdiocb = (struct lpfc_iocbq *) arg;
1181
1182 /* Treat like rcv logo */
1183 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1184 return ndlp->nlp_state;
1185 }
1186
1187 static uint32_t
1188 lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1189 struct lpfc_nodelist *ndlp,
1190 void *arg, uint32_t evt)
1191 {
1192 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1193 struct lpfc_hba *phba = vport->phba;
1194 struct lpfc_iocbq *cmdiocb, *rspiocb;
1195 IOCB_t *irsp;
1196 ADISC *ap;
1197 int rc;
1198
1199 cmdiocb = (struct lpfc_iocbq *) arg;
1200 rspiocb = cmdiocb->context_un.rsp_iocb;
1201
1202 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1203 irsp = &rspiocb->iocb;
1204
1205 if ((irsp->ulpStatus) ||
1206 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
1207 /* 1 sec timeout */
1208 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
1209 spin_lock_irq(shost->host_lock);
1210 ndlp->nlp_flag |= NLP_DELAY_TMO;
1211 spin_unlock_irq(shost->host_lock);
1212 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1213
1214 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1215 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
1216
1217 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1218 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1219 lpfc_unreg_rpi(vport, ndlp);
1220 return ndlp->nlp_state;
1221 }
1222
1223 if (phba->sli_rev == LPFC_SLI_REV4) {
1224 rc = lpfc_sli4_resume_rpi(ndlp);
1225 if (rc) {
1226 /* Stay in state and retry. */
1227 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1228 return ndlp->nlp_state;
1229 }
1230 }
1231
1232 if (ndlp->nlp_type & NLP_FCP_TARGET) {
1233 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1234 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1235 } else {
1236 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1237 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1238 }
1239
1240 return ndlp->nlp_state;
1241 }
1242
1243 static uint32_t
1244 lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1245 void *arg, uint32_t evt)
1246 {
1247 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1248
1249 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1250 spin_lock_irq(shost->host_lock);
1251 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1252 spin_unlock_irq(shost->host_lock);
1253 return ndlp->nlp_state;
1254 } else {
1255 /* software abort outstanding ADISC */
1256 lpfc_els_abort(vport->phba, ndlp);
1257
1258 lpfc_drop_node(vport, ndlp);
1259 return NLP_STE_FREED_NODE;
1260 }
1261 }
1262
1263 static uint32_t
1264 lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1265 struct lpfc_nodelist *ndlp,
1266 void *arg,
1267 uint32_t evt)
1268 {
1269 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1270 struct lpfc_hba *phba = vport->phba;
1271
1272 /* Don't do anything that will mess up processing of the
1273 * previous RSCN.
1274 */
1275 if (vport->fc_flag & FC_RSCN_DEFERRED)
1276 return ndlp->nlp_state;
1277
1278 /* software abort outstanding ADISC */
1279 lpfc_els_abort(phba, ndlp);
1280
1281 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1282 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1283 spin_lock_irq(shost->host_lock);
1284 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1285 spin_unlock_irq(shost->host_lock);
1286 lpfc_disc_set_adisc(vport, ndlp);
1287 return ndlp->nlp_state;
1288 }
1289
1290 static uint32_t
1291 lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1292 struct lpfc_nodelist *ndlp,
1293 void *arg,
1294 uint32_t evt)
1295 {
1296 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1297
1298 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1299 return ndlp->nlp_state;
1300 }
1301
1302 static uint32_t
1303 lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1304 struct lpfc_nodelist *ndlp,
1305 void *arg,
1306 uint32_t evt)
1307 {
1308 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1309
1310 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1311 return ndlp->nlp_state;
1312 }
1313
1314 static uint32_t
1315 lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1316 struct lpfc_nodelist *ndlp,
1317 void *arg,
1318 uint32_t evt)
1319 {
1320 struct lpfc_hba *phba = vport->phba;
1321 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1322 LPFC_MBOXQ_t *mb;
1323 LPFC_MBOXQ_t *nextmb;
1324 struct lpfc_dmabuf *mp;
1325
1326 cmdiocb = (struct lpfc_iocbq *) arg;
1327
1328 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1329 if ((mb = phba->sli.mbox_active)) {
1330 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1331 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1332 lpfc_nlp_put(ndlp);
1333 mb->context2 = NULL;
1334 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1335 }
1336 }
1337
1338 spin_lock_irq(&phba->hbalock);
1339 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
1340 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
1341 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1342 mp = (struct lpfc_dmabuf *) (mb->context1);
1343 if (mp) {
1344 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
1345 kfree(mp);
1346 }
1347 lpfc_nlp_put(ndlp);
1348 list_del(&mb->list);
1349 phba->sli.mboxq_cnt--;
1350 mempool_free(mb, phba->mbox_mem_pool);
1351 }
1352 }
1353 spin_unlock_irq(&phba->hbalock);
1354
1355 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1356 return ndlp->nlp_state;
1357 }
1358
1359 static uint32_t
1360 lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1361 struct lpfc_nodelist *ndlp,
1362 void *arg,
1363 uint32_t evt)
1364 {
1365 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1366
1367 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1368 return ndlp->nlp_state;
1369 }
1370
1371 static uint32_t
1372 lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1373 struct lpfc_nodelist *ndlp,
1374 void *arg,
1375 uint32_t evt)
1376 {
1377 struct lpfc_iocbq *cmdiocb;
1378
1379 cmdiocb = (struct lpfc_iocbq *) arg;
1380 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1381 return ndlp->nlp_state;
1382 }
1383
1384 static uint32_t
1385 lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1386 struct lpfc_nodelist *ndlp,
1387 void *arg,
1388 uint32_t evt)
1389 {
1390 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1391 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1392 MAILBOX_t *mb = &pmb->u.mb;
1393 uint32_t did = mb->un.varWords[1];
1394
1395 if (mb->mbxStatus) {
1396 /* RegLogin failed */
1397 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
1398 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1399 "x%x\n",
1400 did, mb->mbxStatus, vport->port_state,
1401 mb->un.varRegLogin.vpi,
1402 mb->un.varRegLogin.rpi);
1403 /*
1404 * If RegLogin failed due to lack of HBA resources do not
1405 * retry discovery.
1406 */
1407 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1408 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1409 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1410 return ndlp->nlp_state;
1411 }
1412
1413 /* Put ndlp in npr state set plogi timer for 1 sec */
1414 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1415 spin_lock_irq(shost->host_lock);
1416 ndlp->nlp_flag |= NLP_DELAY_TMO;
1417 spin_unlock_irq(shost->host_lock);
1418 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1419
1420 lpfc_issue_els_logo(vport, ndlp, 0);
1421 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1422 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1423 return ndlp->nlp_state;
1424 }
1425
1426 /* SLI4 ports have preallocated logical rpis. */
1427 if (vport->phba->sli_rev < LPFC_SLI_REV4)
1428 ndlp->nlp_rpi = mb->un.varWords[0];
1429
1430 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
1431
1432 /* Only if we are not a fabric nport do we issue PRLI */
1433 if (!(ndlp->nlp_type & NLP_FABRIC)) {
1434 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1435 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1436 lpfc_issue_els_prli(vport, ndlp, 0);
1437 } else {
1438 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1439 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1440 }
1441 return ndlp->nlp_state;
1442 }
1443
1444 static uint32_t
1445 lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1446 struct lpfc_nodelist *ndlp,
1447 void *arg,
1448 uint32_t evt)
1449 {
1450 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1451
1452 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1453 spin_lock_irq(shost->host_lock);
1454 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1455 spin_unlock_irq(shost->host_lock);
1456 return ndlp->nlp_state;
1457 } else {
1458 lpfc_drop_node(vport, ndlp);
1459 return NLP_STE_FREED_NODE;
1460 }
1461 }
1462
1463 static uint32_t
1464 lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1465 struct lpfc_nodelist *ndlp,
1466 void *arg,
1467 uint32_t evt)
1468 {
1469 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1470
1471 /* Don't do anything that will mess up processing of the
1472 * previous RSCN.
1473 */
1474 if (vport->fc_flag & FC_RSCN_DEFERRED)
1475 return ndlp->nlp_state;
1476
1477 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1478 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1479 spin_lock_irq(shost->host_lock);
1480 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
1481 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1482 spin_unlock_irq(shost->host_lock);
1483 lpfc_disc_set_adisc(vport, ndlp);
1484 return ndlp->nlp_state;
1485 }
1486
1487 static uint32_t
1488 lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1489 void *arg, uint32_t evt)
1490 {
1491 struct lpfc_iocbq *cmdiocb;
1492
1493 cmdiocb = (struct lpfc_iocbq *) arg;
1494
1495 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1496 return ndlp->nlp_state;
1497 }
1498
1499 static uint32_t
1500 lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1501 void *arg, uint32_t evt)
1502 {
1503 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1504
1505 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1506 return ndlp->nlp_state;
1507 }
1508
1509 static uint32_t
1510 lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1511 void *arg, uint32_t evt)
1512 {
1513 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1514
1515 /* Software abort outstanding PRLI before sending acc */
1516 lpfc_els_abort(vport->phba, ndlp);
1517
1518 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1519 return ndlp->nlp_state;
1520 }
1521
1522 static uint32_t
1523 lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1524 void *arg, uint32_t evt)
1525 {
1526 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1527
1528 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1529 return ndlp->nlp_state;
1530 }
1531
1532 /* This routine is envoked when we rcv a PRLO request from a nport
1533 * we are logged into. We should send back a PRLO rsp setting the
1534 * appropriate bits.
1535 * NEXT STATE = PRLI_ISSUE
1536 */
1537 static uint32_t
1538 lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1539 void *arg, uint32_t evt)
1540 {
1541 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1542
1543 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1544 return ndlp->nlp_state;
1545 }
1546
1547 static uint32_t
1548 lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1549 void *arg, uint32_t evt)
1550 {
1551 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1552 struct lpfc_iocbq *cmdiocb, *rspiocb;
1553 struct lpfc_hba *phba = vport->phba;
1554 IOCB_t *irsp;
1555 PRLI *npr;
1556
1557 cmdiocb = (struct lpfc_iocbq *) arg;
1558 rspiocb = cmdiocb->context_un.rsp_iocb;
1559 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1560
1561 irsp = &rspiocb->iocb;
1562 if (irsp->ulpStatus) {
1563 if ((vport->port_type == LPFC_NPIV_PORT) &&
1564 vport->cfg_restrict_login) {
1565 goto out;
1566 }
1567 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1568 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1569 return ndlp->nlp_state;
1570 }
1571
1572 /* Check out PRLI rsp */
1573 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1574 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1575 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1576 (npr->prliType == PRLI_FCP_TYPE)) {
1577 if (npr->initiatorFunc)
1578 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1579 if (npr->targetFunc)
1580 ndlp->nlp_type |= NLP_FCP_TARGET;
1581 if (npr->Retry)
1582 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1583 }
1584 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1585 (vport->port_type == LPFC_NPIV_PORT) &&
1586 vport->cfg_restrict_login) {
1587 out:
1588 spin_lock_irq(shost->host_lock);
1589 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1590 spin_unlock_irq(shost->host_lock);
1591 lpfc_issue_els_logo(vport, ndlp, 0);
1592
1593 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1594 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1595 return ndlp->nlp_state;
1596 }
1597
1598 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1599 if (ndlp->nlp_type & NLP_FCP_TARGET)
1600 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1601 else
1602 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
1603 return ndlp->nlp_state;
1604 }
1605
1606 /*! lpfc_device_rm_prli_issue
1607 *
1608 * \pre
1609 * \post
1610 * \param phba
1611 * \param ndlp
1612 * \param arg
1613 * \param evt
1614 * \return uint32_t
1615 *
1616 * \b Description:
1617 * This routine is envoked when we a request to remove a nport we are in the
1618 * process of PRLIing. We should software abort outstanding prli, unreg
1619 * login, send a logout. We will change node state to UNUSED_NODE, put it
1620 * on plogi list so it can be freed when LOGO completes.
1621 *
1622 */
1623
1624 static uint32_t
1625 lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1626 void *arg, uint32_t evt)
1627 {
1628 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1629
1630 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1631 spin_lock_irq(shost->host_lock);
1632 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1633 spin_unlock_irq(shost->host_lock);
1634 return ndlp->nlp_state;
1635 } else {
1636 /* software abort outstanding PLOGI */
1637 lpfc_els_abort(vport->phba, ndlp);
1638
1639 lpfc_drop_node(vport, ndlp);
1640 return NLP_STE_FREED_NODE;
1641 }
1642 }
1643
1644
1645 /*! lpfc_device_recov_prli_issue
1646 *
1647 * \pre
1648 * \post
1649 * \param phba
1650 * \param ndlp
1651 * \param arg
1652 * \param evt
1653 * \return uint32_t
1654 *
1655 * \b Description:
1656 * The routine is envoked when the state of a device is unknown, like
1657 * during a link down. We should remove the nodelist entry from the
1658 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1659 * outstanding PRLI command, then free the node entry.
1660 */
1661 static uint32_t
1662 lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1663 struct lpfc_nodelist *ndlp,
1664 void *arg,
1665 uint32_t evt)
1666 {
1667 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1668 struct lpfc_hba *phba = vport->phba;
1669
1670 /* Don't do anything that will mess up processing of the
1671 * previous RSCN.
1672 */
1673 if (vport->fc_flag & FC_RSCN_DEFERRED)
1674 return ndlp->nlp_state;
1675
1676 /* software abort outstanding PRLI */
1677 lpfc_els_abort(phba, ndlp);
1678
1679 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
1680 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1681 spin_lock_irq(shost->host_lock);
1682 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1683 spin_unlock_irq(shost->host_lock);
1684 lpfc_disc_set_adisc(vport, ndlp);
1685 return ndlp->nlp_state;
1686 }
1687
1688 static uint32_t
1689 lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1690 void *arg, uint32_t evt)
1691 {
1692 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1693
1694 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1695 return ndlp->nlp_state;
1696 }
1697
1698 static uint32_t
1699 lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1700 void *arg, uint32_t evt)
1701 {
1702 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1703
1704 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1705 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1706 return ndlp->nlp_state;
1707 }
1708
1709 static uint32_t
1710 lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1711 void *arg, uint32_t evt)
1712 {
1713 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1714
1715 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1716 return ndlp->nlp_state;
1717 }
1718
1719 static uint32_t
1720 lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1721 void *arg, uint32_t evt)
1722 {
1723 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1724
1725 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1726 return ndlp->nlp_state;
1727 }
1728
1729 static uint32_t
1730 lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1731 void *arg, uint32_t evt)
1732 {
1733 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1734
1735 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
1736 return ndlp->nlp_state;
1737 }
1738
1739 static uint32_t
1740 lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1741 struct lpfc_nodelist *ndlp,
1742 void *arg,
1743 uint32_t evt)
1744 {
1745 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1746
1747 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
1748 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1749 spin_lock_irq(shost->host_lock);
1750 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1751 spin_unlock_irq(shost->host_lock);
1752 lpfc_disc_set_adisc(vport, ndlp);
1753
1754 return ndlp->nlp_state;
1755 }
1756
1757 static uint32_t
1758 lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1759 void *arg, uint32_t evt)
1760 {
1761 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1762
1763 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
1764 return ndlp->nlp_state;
1765 }
1766
1767 static uint32_t
1768 lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1769 void *arg, uint32_t evt)
1770 {
1771 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1772
1773 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
1774 return ndlp->nlp_state;
1775 }
1776
1777 static uint32_t
1778 lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1779 void *arg, uint32_t evt)
1780 {
1781 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1782
1783 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1784 return ndlp->nlp_state;
1785 }
1786
1787 static uint32_t
1788 lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
1789 struct lpfc_nodelist *ndlp,
1790 void *arg, uint32_t evt)
1791 {
1792 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1793
1794 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1795 return ndlp->nlp_state;
1796 }
1797
1798 static uint32_t
1799 lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1800 void *arg, uint32_t evt)
1801 {
1802 struct lpfc_hba *phba = vport->phba;
1803 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1804
1805 /* flush the target */
1806 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1807 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
1808
1809 /* Treat like rcv logo */
1810 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
1811 return ndlp->nlp_state;
1812 }
1813
1814 static uint32_t
1815 lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
1816 struct lpfc_nodelist *ndlp,
1817 void *arg,
1818 uint32_t evt)
1819 {
1820 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1821
1822 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
1823 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1824 spin_lock_irq(shost->host_lock);
1825 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1826 spin_unlock_irq(shost->host_lock);
1827 lpfc_disc_set_adisc(vport, ndlp);
1828 return ndlp->nlp_state;
1829 }
1830
1831 static uint32_t
1832 lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1833 void *arg, uint32_t evt)
1834 {
1835 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1836 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1837
1838 /* Ignore PLOGI if we have an outstanding LOGO */
1839 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
1840 return ndlp->nlp_state;
1841 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1842 lpfc_cancel_retry_delay_tmo(vport, ndlp);
1843 spin_lock_irq(shost->host_lock);
1844 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
1845 spin_unlock_irq(shost->host_lock);
1846 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1847 /* send PLOGI immediately, move to PLOGI issue state */
1848 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1849 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1850 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1851 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1852 }
1853 }
1854 return ndlp->nlp_state;
1855 }
1856
1857 static uint32_t
1858 lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1859 void *arg, uint32_t evt)
1860 {
1861 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1862 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1863 struct ls_rjt stat;
1864
1865 memset(&stat, 0, sizeof (struct ls_rjt));
1866 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1867 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1868 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1869
1870 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1871 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1872 spin_lock_irq(shost->host_lock);
1873 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1874 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1875 spin_unlock_irq(shost->host_lock);
1876 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1877 lpfc_issue_els_adisc(vport, ndlp, 0);
1878 } else {
1879 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1880 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1881 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1882 }
1883 }
1884 return ndlp->nlp_state;
1885 }
1886
1887 static uint32_t
1888 lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1889 void *arg, uint32_t evt)
1890 {
1891 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1892
1893 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
1894 return ndlp->nlp_state;
1895 }
1896
1897 static uint32_t
1898 lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1899 void *arg, uint32_t evt)
1900 {
1901 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1902
1903 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
1904 /*
1905 * Do not start discovery if discovery is about to start
1906 * or discovery in progress for this node. Starting discovery
1907 * here will affect the counting of discovery threads.
1908 */
1909 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1910 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
1911 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
1912 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1913 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1914 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
1915 lpfc_issue_els_adisc(vport, ndlp, 0);
1916 } else {
1917 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1918 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
1919 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1920 }
1921 }
1922 return ndlp->nlp_state;
1923 }
1924
1925 static uint32_t
1926 lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1927 void *arg, uint32_t evt)
1928 {
1929 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1930 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
1931
1932 spin_lock_irq(shost->host_lock);
1933 ndlp->nlp_flag |= NLP_LOGO_ACC;
1934 spin_unlock_irq(shost->host_lock);
1935
1936 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1937
1938 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
1939 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1940 spin_lock_irq(shost->host_lock);
1941 ndlp->nlp_flag |= NLP_DELAY_TMO;
1942 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1943 spin_unlock_irq(shost->host_lock);
1944 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
1945 } else {
1946 spin_lock_irq(shost->host_lock);
1947 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1948 spin_unlock_irq(shost->host_lock);
1949 }
1950 return ndlp->nlp_state;
1951 }
1952
1953 static uint32_t
1954 lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1955 void *arg, uint32_t evt)
1956 {
1957 struct lpfc_iocbq *cmdiocb, *rspiocb;
1958 IOCB_t *irsp;
1959
1960 cmdiocb = (struct lpfc_iocbq *) arg;
1961 rspiocb = cmdiocb->context_un.rsp_iocb;
1962
1963 irsp = &rspiocb->iocb;
1964 if (irsp->ulpStatus) {
1965 ndlp->nlp_flag |= NLP_DEFER_RM;
1966 return NLP_STE_FREED_NODE;
1967 }
1968 return ndlp->nlp_state;
1969 }
1970
1971 static uint32_t
1972 lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1973 void *arg, uint32_t evt)
1974 {
1975 struct lpfc_iocbq *cmdiocb, *rspiocb;
1976 IOCB_t *irsp;
1977
1978 cmdiocb = (struct lpfc_iocbq *) arg;
1979 rspiocb = cmdiocb->context_un.rsp_iocb;
1980
1981 irsp = &rspiocb->iocb;
1982 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1983 lpfc_drop_node(vport, ndlp);
1984 return NLP_STE_FREED_NODE;
1985 }
1986 return ndlp->nlp_state;
1987 }
1988
1989 static uint32_t
1990 lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1991 void *arg, uint32_t evt)
1992 {
1993 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1994 if (ndlp->nlp_DID == Fabric_DID) {
1995 spin_lock_irq(shost->host_lock);
1996 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
1997 spin_unlock_irq(shost->host_lock);
1998 }
1999 lpfc_unreg_rpi(vport, ndlp);
2000 return ndlp->nlp_state;
2001 }
2002
2003 static uint32_t
2004 lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2005 void *arg, uint32_t evt)
2006 {
2007 struct lpfc_iocbq *cmdiocb, *rspiocb;
2008 IOCB_t *irsp;
2009
2010 cmdiocb = (struct lpfc_iocbq *) arg;
2011 rspiocb = cmdiocb->context_un.rsp_iocb;
2012
2013 irsp = &rspiocb->iocb;
2014 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2015 lpfc_drop_node(vport, ndlp);
2016 return NLP_STE_FREED_NODE;
2017 }
2018 return ndlp->nlp_state;
2019 }
2020
2021 static uint32_t
2022 lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2023 struct lpfc_nodelist *ndlp,
2024 void *arg, uint32_t evt)
2025 {
2026 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
2027 MAILBOX_t *mb = &pmb->u.mb;
2028
2029 if (!mb->mbxStatus) {
2030 /* SLI4 ports have preallocated logical rpis. */
2031 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2032 ndlp->nlp_rpi = mb->un.varWords[0];
2033 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
2034 } else {
2035 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2036 lpfc_drop_node(vport, ndlp);
2037 return NLP_STE_FREED_NODE;
2038 }
2039 }
2040 return ndlp->nlp_state;
2041 }
2042
2043 static uint32_t
2044 lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2045 void *arg, uint32_t evt)
2046 {
2047 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2048
2049 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2050 spin_lock_irq(shost->host_lock);
2051 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2052 spin_unlock_irq(shost->host_lock);
2053 return ndlp->nlp_state;
2054 }
2055 lpfc_drop_node(vport, ndlp);
2056 return NLP_STE_FREED_NODE;
2057 }
2058
2059 static uint32_t
2060 lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2061 void *arg, uint32_t evt)
2062 {
2063 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2064
2065 /* Don't do anything that will mess up processing of the
2066 * previous RSCN.
2067 */
2068 if (vport->fc_flag & FC_RSCN_DEFERRED)
2069 return ndlp->nlp_state;
2070
2071 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2072 spin_lock_irq(shost->host_lock);
2073 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2074 spin_unlock_irq(shost->host_lock);
2075 return ndlp->nlp_state;
2076 }
2077
2078
2079 /* This next section defines the NPort Discovery State Machine */
2080
2081 /* There are 4 different double linked lists nodelist entries can reside on.
2082 * The plogi list and adisc list are used when Link Up discovery or RSCN
2083 * processing is needed. Each list holds the nodes that we will send PLOGI
2084 * or ADISC on. These lists will keep track of what nodes will be effected
2085 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2086 * The unmapped_list will contain all nodes that we have successfully logged
2087 * into at the Fibre Channel level. The mapped_list will contain all nodes
2088 * that are mapped FCP targets.
2089 */
2090 /*
2091 * The bind list is a list of undiscovered (potentially non-existent) nodes
2092 * that we have saved binding information on. This information is used when
2093 * nodes transition from the unmapped to the mapped list.
2094 */
2095 /* For UNUSED_NODE state, the node has just been allocated .
2096 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2097 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2098 * and put on the unmapped list. For ADISC processing, the node is taken off
2099 * the ADISC list and placed on either the mapped or unmapped list (depending
2100 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2101 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2102 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2103 * node, the node is taken off the unmapped list. The binding list is checked
2104 * for a valid binding, or a binding is automatically assigned. If binding
2105 * assignment is unsuccessful, the node is left on the unmapped list. If
2106 * binding assignment is successful, the associated binding list entry (if
2107 * any) is removed, and the node is placed on the mapped list.
2108 */
2109 /*
2110 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
2111 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
2112 * expire, all effected nodes will receive a DEVICE_RM event.
2113 */
2114 /*
2115 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2116 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2117 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2118 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2119 * we will first process the ADISC list. 32 entries are processed initially and
2120 * ADISC is initited for each one. Completions / Events for each node are
2121 * funnelled thru the state machine. As each node finishes ADISC processing, it
2122 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2123 * waiting, and the ADISC list count is identically 0, then we are done. For
2124 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2125 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2126 * list. 32 entries are processed initially and PLOGI is initited for each one.
2127 * Completions / Events for each node are funnelled thru the state machine. As
2128 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2129 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2130 * indentically 0, then we are done. We have now completed discovery / RSCN
2131 * handling. Upon completion, ALL nodes should be on either the mapped or
2132 * unmapped lists.
2133 */
2134
2135 static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2136 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
2137 /* Action routine Event Current State */
2138 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2139 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2140 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2141 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2142 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2143 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2144 lpfc_disc_illegal, /* CMPL_PLOGI */
2145 lpfc_disc_illegal, /* CMPL_PRLI */
2146 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2147 lpfc_disc_illegal, /* CMPL_ADISC */
2148 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2149 lpfc_device_rm_unused_node, /* DEVICE_RM */
2150 lpfc_disc_illegal, /* DEVICE_RECOVERY */
2151
2152 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
2153 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
2154 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
2155 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2156 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2157 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2158 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2159 lpfc_disc_illegal, /* CMPL_PRLI */
2160 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
2161 lpfc_disc_illegal, /* CMPL_ADISC */
2162 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
2163 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2164 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2165
2166 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2167 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2168 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2169 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2170 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2171 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2172 lpfc_disc_illegal, /* CMPL_PLOGI */
2173 lpfc_disc_illegal, /* CMPL_PRLI */
2174 lpfc_disc_illegal, /* CMPL_LOGO */
2175 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2176 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2177 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2178 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2179
2180 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2181 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2182 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2183 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2184 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2185 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
2186 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2187 lpfc_disc_illegal, /* CMPL_PRLI */
2188 lpfc_disc_illegal, /* CMPL_LOGO */
2189 lpfc_disc_illegal, /* CMPL_ADISC */
2190 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2191 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2192 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2193
2194 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2195 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2196 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2197 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2198 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2199 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
2200 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2201 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2202 lpfc_disc_illegal, /* CMPL_LOGO */
2203 lpfc_disc_illegal, /* CMPL_ADISC */
2204 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2205 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2206 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2207
2208 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2209 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2210 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2211 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2212 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2213 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2214 lpfc_disc_illegal, /* CMPL_PLOGI */
2215 lpfc_disc_illegal, /* CMPL_PRLI */
2216 lpfc_disc_illegal, /* CMPL_LOGO */
2217 lpfc_disc_illegal, /* CMPL_ADISC */
2218 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2219 lpfc_disc_illegal, /* DEVICE_RM */
2220 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2221
2222 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2223 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2224 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2225 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2226 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2227 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2228 lpfc_disc_illegal, /* CMPL_PLOGI */
2229 lpfc_disc_illegal, /* CMPL_PRLI */
2230 lpfc_disc_illegal, /* CMPL_LOGO */
2231 lpfc_disc_illegal, /* CMPL_ADISC */
2232 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2233 lpfc_disc_illegal, /* DEVICE_RM */
2234 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2235
2236 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2237 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2238 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2239 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2240 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2241 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
2242 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2243 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
2244 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
2245 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
2246 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2247 lpfc_device_rm_npr_node, /* DEVICE_RM */
2248 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2249 };
2250
2251 int
2252 lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2253 void *arg, uint32_t evt)
2254 {
2255 uint32_t cur_state, rc;
2256 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
2257 uint32_t);
2258 uint32_t got_ndlp = 0;
2259
2260 if (lpfc_nlp_get(ndlp))
2261 got_ndlp = 1;
2262
2263 cur_state = ndlp->nlp_state;
2264
2265 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
2266 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2267 "0211 DSM in event x%x on NPort x%x in "
2268 "state %d Data: x%x\n",
2269 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
2270
2271 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2272 "DSM in: evt:%d ste:%d did:x%x",
2273 evt, cur_state, ndlp->nlp_DID);
2274
2275 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2276 rc = (func) (vport, ndlp, arg, evt);
2277
2278 /* DSM out state <rc> on NPort <nlp_DID> */
2279 if (got_ndlp) {
2280 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2281 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2282 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2283
2284 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2285 "DSM out: ste:%d did:x%x flg:x%x",
2286 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2287 /* Decrement the ndlp reference count held for this function */
2288 lpfc_nlp_put(ndlp);
2289 } else {
2290 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2291 "0213 DSM out state %d on NPort free\n", rc);
2292
2293 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2294 "DSM out: ste:%d did:x%x flg:x%x",
2295 rc, 0, 0);
2296 }
2297
2298 return rc;
2299 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree