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[SCSI] lpfc 8.1.12 : Fix unlock inside list traversal
[linux-block.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
CommitLineData
dea3101e 1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
c44ce173 3 * Fibre Channel Host Bus Adapters. *
2fe165b6 4 * Copyright (C) 2004-2006 Emulex. All rights reserved. *
c44ce173 5 * EMULEX and SLI are trademarks of Emulex. *
dea3101e 6 * www.emulex.com *
c44ce173 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
dea3101e 8 * *
9 * This program is free software; you can redistribute it and/or *
c44ce173
JSEC		 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. *
dea3101e 20 *******************************************************************/
21
dea3101e 22#include <linux/blkdev.h>
23#include <linux/pci.h>
24#include <linux/interrupt.h>
25
91886523 26#include <scsi/scsi.h>
dea3101e 27#include <scsi/scsi_device.h>
28#include <scsi/scsi_host.h>
29#include <scsi/scsi_transport_fc.h>
30
31#include "lpfc_hw.h"
32#include "lpfc_sli.h"
33#include "lpfc_disc.h"
34#include "lpfc_scsi.h"
35#include "lpfc.h"
36#include "lpfc_logmsg.h"
37#include "lpfc_crtn.h"
38
39
40/* Called to verify a rcv'ed ADISC was intended for us. */
41static int
42lpfc_check_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
43 struct lpfc_name * nn, struct lpfc_name * pn)
44{
45 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
46 * table entry for that node.
47 */
48 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)) != 0)
c9f8735b 49 return 0;
dea3101e 50
51 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)) != 0)
c9f8735b 52 return 0;
dea3101e 53
54 /* we match, return success */
c9f8735b 55 return 1;
dea3101e 56}
57
dea3101e 58int
59lpfc_check_sparm(struct lpfc_hba * phba,
60 struct lpfc_nodelist * ndlp, struct serv_parm * sp,
61 uint32_t class)
62{
63 volatile struct serv_parm *hsp = &phba->fc_sparam;
2fb70f79
JSEC		 64 uint16_t hsp_value, ssp_value = 0;
65
66 /*
67 * The receive data field size and buffer-to-buffer receive data field
68 * size entries are 16 bits but are represented as two 8-bit fields in
69 * the driver data structure to account for rsvd bits and other control
70 * bits. Reconstruct and compare the fields as a 16-bit values before
71 * correcting the byte values.
72 */
dea3101e 73 if (sp->cls1.classValid) {
2fb70f79
JSEC		 74 hsp_value = (hsp->cls1.rcvDataSizeMsb << 8) |
75 hsp->cls1.rcvDataSizeLsb;
76 ssp_value = (sp->cls1.rcvDataSizeMsb << 8) |
77 sp->cls1.rcvDataSizeLsb;
78 if (ssp_value > hsp_value) {
dea3101e 79 sp->cls1.rcvDataSizeLsb = hsp->cls1.rcvDataSizeLsb;
2fb70f79
JSEC		 80 sp->cls1.rcvDataSizeMsb = hsp->cls1.rcvDataSizeMsb;
81 }
dea3101e 82 } else if (class == CLASS1) {
2fb70f79 83 return 0;
dea3101e 84 }
85
86 if (sp->cls2.classValid) {
2fb70f79
JSEC		 87 hsp_value = (hsp->cls2.rcvDataSizeMsb << 8) |
88 hsp->cls2.rcvDataSizeLsb;
89 ssp_value = (sp->cls2.rcvDataSizeMsb << 8) |
90 sp->cls2.rcvDataSizeLsb;
91 if (ssp_value > hsp_value) {
dea3101e 92 sp->cls2.rcvDataSizeLsb = hsp->cls2.rcvDataSizeLsb;
2fb70f79
JSEC		 93 sp->cls2.rcvDataSizeMsb = hsp->cls2.rcvDataSizeMsb;
94 }
dea3101e 95 } else if (class == CLASS2) {
2fb70f79 96 return 0;
dea3101e 97 }
98
99 if (sp->cls3.classValid) {
2fb70f79
JSEC		 100 hsp_value = (hsp->cls3.rcvDataSizeMsb << 8) |
101 hsp->cls3.rcvDataSizeLsb;
102 ssp_value = (sp->cls3.rcvDataSizeMsb << 8) |
103 sp->cls3.rcvDataSizeLsb;
104 if (ssp_value > hsp_value) {
dea3101e 105 sp->cls3.rcvDataSizeLsb = hsp->cls3.rcvDataSizeLsb;
2fb70f79
JSEC		 106 sp->cls3.rcvDataSizeMsb = hsp->cls3.rcvDataSizeMsb;
107 }
dea3101e 108 } else if (class == CLASS3) {
2fb70f79 109 return 0;
dea3101e 110 }
111
2fb70f79
JSEC		 112 /*
113 * Preserve the upper four bits of the MSB from the PLOGI response.
114 * These bits contain the Buffer-to-Buffer State Change Number
115 * from the target and need to be passed to the FW.
116 */
117 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
118 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
119 if (ssp_value > hsp_value) {
dea3101e 120 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
2fb70f79
JSEC		 121 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
122 (hsp->cmn.bbRcvSizeMsb & 0x0F);
123 }
dea3101e 124
dea3101e 125 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
126 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
2fb70f79 127 return 1;
dea3101e 128}
129
130static void *
131lpfc_check_elscmpl_iocb(struct lpfc_hba * phba,
132 struct lpfc_iocbq *cmdiocb,
133 struct lpfc_iocbq *rspiocb)
134{
135 struct lpfc_dmabuf *pcmd, *prsp;
136 uint32_t *lp;
137 void *ptr = NULL;
138 IOCB_t *irsp;
139
140 irsp = &rspiocb->iocb;
141 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
142
143 /* For lpfc_els_abort, context2 could be zero'ed to delay
144 * freeing associated memory till after ABTS completes.
145 */
146 if (pcmd) {
147 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
148 list);
149 if (prsp) {
150 lp = (uint32_t *) prsp->virt;
151 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
152 }
2fe165b6 153 } else {
dea3101e 154 /* Force ulpStatus error since we are returning NULL ptr */
155 if (!(irsp->ulpStatus)) {
156 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
157 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
158 }
159 ptr = NULL;
160 }
c9f8735b 161 return ptr;
dea3101e 162}
163
164
165/*
166 * Free resources / clean up outstanding I/Os
167 * associated with a LPFC_NODELIST entry. This
168 * routine effectively results in a "software abort".
169 */
170int
07951076 171lpfc_els_abort(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp)
dea3101e 172{
2534ba75 173 LIST_HEAD(completions);
dea3101e 174 struct lpfc_sli *psli;
175 struct lpfc_sli_ring *pring;
176 struct lpfc_iocbq *iocb, *next_iocb;
2534ba75 177 IOCB_t *cmd;
dea3101e 178
179 /* Abort outstanding I/O on NPort <nlp_DID> */
180 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
dca9479b 181 "%d:0205 Abort outstanding I/O on NPort x%x "
dea3101e 182 "Data: x%x x%x x%x\n",
183 phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
184 ndlp->nlp_state, ndlp->nlp_rpi);
185
186 psli = &phba->sli;
187 pring = &psli->ring[LPFC_ELS_RING];
188
189 /* First check the txq */
2534ba75
JS		 190 spin_lock_irq(phba->host->host_lock);
191 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
192 /* Check to see if iocb matches the nport we are looking
193 for */
194 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
195 /* It matches, so deque and call compl with an
196 error */
197 list_move_tail(&iocb->list, &completions);
198 pring->txq_cnt--;
dea3101e 199 }
2534ba75 200 }
dea3101e 201
dea3101e 202 /* Next check the txcmplq */
07951076
JS		 203 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
204 /* Check to see if iocb matches the nport we are looking
205 for */
2534ba75 206 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
07951076 207 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
07951076
JS		 208 }
209 spin_unlock_irq(phba->host->host_lock);
dea3101e 210
2534ba75
JS		 211 while (!list_empty(&completions)) {
212 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
213 cmd = &iocb->iocb;
214 list_del(&iocb->list);
215
216 if (iocb->iocb_cmpl) {
217 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
218 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
219 (iocb->iocb_cmpl) (phba, iocb, iocb);
220 } else
221 lpfc_sli_release_iocbq(phba, iocb);
222 }
223
dea3101e 224 /* If we are delaying issuing an ELS command, cancel it */
fdcebe28
JS		 225 if (ndlp->nlp_flag & NLP_DELAY_TMO)
226 lpfc_cancel_retry_delay_tmo(phba, ndlp);
c9f8735b 227 return 0;
dea3101e 228}
229
230static int
231lpfc_rcv_plogi(struct lpfc_hba * phba,
232 struct lpfc_nodelist * ndlp,
233 struct lpfc_iocbq *cmdiocb)
234{
235 struct lpfc_dmabuf *pcmd;
236 uint32_t *lp;
237 IOCB_t *icmd;
238 struct serv_parm *sp;
239 LPFC_MBOXQ_t *mbox;
240 struct ls_rjt stat;
241 int rc;
242
243 memset(&stat, 0, sizeof (struct ls_rjt));
244 if (phba->hba_state <= LPFC_FLOGI) {
245 /* Before responding to PLOGI, check for pt2pt mode.
246 * If we are pt2pt, with an outstanding FLOGI, abort
247 * the FLOGI and resend it first.
248 */
249 if (phba->fc_flag & FC_PT2PT) {
250 lpfc_els_abort_flogi(phba);
251 if (!(phba->fc_flag & FC_PT2PT_PLOGI)) {
252 /* If the other side is supposed to initiate
253 * the PLOGI anyway, just ACC it now and
254 * move on with discovery.
255 */
256 phba->fc_edtov = FF_DEF_EDTOV;
257 phba->fc_ratov = FF_DEF_RATOV;
258 /* Start discovery - this should just do
259 CLEAR_LA */
260 lpfc_disc_start(phba);
2fe165b6 261 } else {
dea3101e 262 lpfc_initial_flogi(phba);
263 }
2fe165b6 264 } else {
dea3101e 265 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
266 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
267 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb,
268 ndlp);
269 return 0;
270 }
271 }
272 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
273 lp = (uint32_t *) pcmd->virt;
274 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
275 if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3) == 0)) {
276 /* Reject this request because invalid parameters */
277 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
278 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
279 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
c9f8735b 280 return 0;
dea3101e 281 }
282 icmd = &cmdiocb->iocb;
283
284 /* PLOGI chkparm OK */
285 lpfc_printf_log(phba,
286 KERN_INFO,
287 LOG_ELS,
288 "%d:0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
289 phba->brd_no,
290 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
291 ndlp->nlp_rpi);
292
293 if ((phba->cfg_fcp_class == 2) &&
294 (sp->cls2.classValid)) {
295 ndlp->nlp_fcp_info |= CLASS2;
296 } else {
297 ndlp->nlp_fcp_info |= CLASS3;
298 }
299 ndlp->nlp_class_sup = 0;
300 if (sp->cls1.classValid)
301 ndlp->nlp_class_sup |= FC_COS_CLASS1;
302 if (sp->cls2.classValid)
303 ndlp->nlp_class_sup |= FC_COS_CLASS2;
304 if (sp->cls3.classValid)
305 ndlp->nlp_class_sup |= FC_COS_CLASS3;
306 if (sp->cls4.classValid)
307 ndlp->nlp_class_sup |= FC_COS_CLASS4;
308 ndlp->nlp_maxframe =
309 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
310
311 /* no need to reg_login if we are already in one of these states */
2fe165b6 312 switch (ndlp->nlp_state) {
dea3101e 313 case NLP_STE_NPR_NODE:
314 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
315 break;
316 case NLP_STE_REG_LOGIN_ISSUE:
317 case NLP_STE_PRLI_ISSUE:
318 case NLP_STE_UNMAPPED_NODE:
319 case NLP_STE_MAPPED_NODE:
320 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, 0);
c9f8735b 321 return 1;
dea3101e 322 }
323
324 if ((phba->fc_flag & FC_PT2PT)
325 && !(phba->fc_flag & FC_PT2PT_PLOGI)) {
326 /* rcv'ed PLOGI decides what our NPortId will be */
327 phba->fc_myDID = icmd->un.rcvels.parmRo;
328 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
329 if (mbox == NULL)
330 goto out;
331 lpfc_config_link(phba, mbox);
332 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
333 rc = lpfc_sli_issue_mbox
334 (phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
335 if (rc == MBX_NOT_FINISHED) {
336 mempool_free( mbox, phba->mbox_mem_pool);
337 goto out;
338 }
339
340 lpfc_can_disctmo(phba);
341 }
342 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
343 if (mbox == NULL)
344 goto out;
345
346 if (lpfc_reg_login(phba, icmd->un.rcvels.remoteID,
347 (uint8_t *) sp, mbox, 0)) {
348 mempool_free( mbox, phba->mbox_mem_pool);
349 goto out;
350 }
351
352 /* ACC PLOGI rsp command needs to execute first,
353 * queue this mbox command to be processed later.
354 */
355 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
356 mbox->context2 = ndlp;
5024ab17 357 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
dea3101e 358
33ccf8d1
JS		 359 /*
360 * If there is an outstanding PLOGI issued, abort it before
361 * sending ACC rsp for received PLOGI. If pending plogi
362 * is not canceled here, the plogi will be rejected by
363 * remote port and will be retried. On a configuration with
364 * single discovery thread, this will cause a huge delay in
365 * discovery. Also this will cause multiple state machines
366 * running in parallel for this node.
367 */
368 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
369 /* software abort outstanding PLOGI */
07951076 370 lpfc_els_abort(phba, ndlp);
33ccf8d1
JS		 371 }
372
dea3101e 373 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox, 0);
c9f8735b 374 return 1;
dea3101e 375
376out:
377 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
378 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
379 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
c9f8735b 380 return 0;
dea3101e 381}
382
383static int
384lpfc_rcv_padisc(struct lpfc_hba * phba,
385 struct lpfc_nodelist * ndlp,
386 struct lpfc_iocbq *cmdiocb)
387{
388 struct lpfc_dmabuf *pcmd;
389 struct serv_parm *sp;
390 struct lpfc_name *pnn, *ppn;
391 struct ls_rjt stat;
392 ADISC *ap;
393 IOCB_t *icmd;
394 uint32_t *lp;
395 uint32_t cmd;
396
397 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
398 lp = (uint32_t *) pcmd->virt;
399
400 cmd = *lp++;
401 if (cmd == ELS_CMD_ADISC) {
402 ap = (ADISC *) lp;
403 pnn = (struct lpfc_name *) & ap->nodeName;
404 ppn = (struct lpfc_name *) & ap->portName;
405 } else {
406 sp = (struct serv_parm *) lp;
407 pnn = (struct lpfc_name *) & sp->nodeName;
408 ppn = (struct lpfc_name *) & sp->portName;
409 }
410
411 icmd = &cmdiocb->iocb;
412 if ((icmd->ulpStatus == 0) &&
413 (lpfc_check_adisc(phba, ndlp, pnn, ppn))) {
414 if (cmd == ELS_CMD_ADISC) {
415 lpfc_els_rsp_adisc_acc(phba, cmdiocb, ndlp);
2fe165b6 416 } else {
dea3101e 417 lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp,
418 NULL, 0);
419 }
c9f8735b 420 return 1;
dea3101e 421 }
422 /* Reject this request because invalid parameters */
423 stat.un.b.lsRjtRsvd0 = 0;
424 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
425 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
426 stat.un.b.vendorUnique = 0;
427 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
428
dea3101e 429 /* 1 sec timeout */
430 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
431
432 spin_lock_irq(phba->host->host_lock);
433 ndlp->nlp_flag |= NLP_DELAY_TMO;
434 spin_unlock_irq(phba->host->host_lock);
5024ab17
JW		 435 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
436 ndlp->nlp_prev_state = ndlp->nlp_state;
dea3101e 437 ndlp->nlp_state = NLP_STE_NPR_NODE;
438 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
c9f8735b 439 return 0;
dea3101e 440}
441
442static int
443lpfc_rcv_logo(struct lpfc_hba * phba,
444 struct lpfc_nodelist * ndlp,
82d9a2a2
JS		 445 struct lpfc_iocbq *cmdiocb,
446 uint32_t els_cmd)
dea3101e 447{
448 /* Put ndlp on NPR list with 1 sec timeout for plogi, ACC logo */
449 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
450 * PLOGIs during LOGO storms from a device.
451 */
452 ndlp->nlp_flag |= NLP_LOGO_ACC;
82d9a2a2
JS		 453 if (els_cmd == ELS_CMD_PRLO)
454 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
455 else
456 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
dea3101e 457
c9f8735b
JW		 458 if (!(ndlp->nlp_type & NLP_FABRIC) ||
459 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
dea3101e 460 /* Only try to re-login if this is NOT a Fabric Node */
dea3101e 461 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
462 spin_lock_irq(phba->host->host_lock);
463 ndlp->nlp_flag |= NLP_DELAY_TMO;
464 spin_unlock_irq(phba->host->host_lock);
dea3101e 465
5024ab17
JW		 466 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
467 ndlp->nlp_prev_state = ndlp->nlp_state;
c9f8735b
JW		 468 ndlp->nlp_state = NLP_STE_NPR_NODE;
469 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
470 } else {
5024ab17 471 ndlp->nlp_prev_state = ndlp->nlp_state;
c9f8735b
JW		 472 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
473 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
474 }
dea3101e 475
c9f8735b 476 spin_lock_irq(phba->host->host_lock);
dea3101e 477 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
c9f8735b 478 spin_unlock_irq(phba->host->host_lock);
dea3101e 479 /* The driver has to wait until the ACC completes before it continues
480 * processing the LOGO. The action will resume in
481 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
482 * unreg_login, the driver waits so the ACC does not get aborted.
483 */
c9f8735b 484 return 0;
dea3101e 485}
486
487static void
488lpfc_rcv_prli(struct lpfc_hba * phba,
489 struct lpfc_nodelist * ndlp,
490 struct lpfc_iocbq *cmdiocb)
491{
492 struct lpfc_dmabuf *pcmd;
493 uint32_t *lp;
494 PRLI *npr;
495 struct fc_rport *rport = ndlp->rport;
496 u32 roles;
497
498 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
499 lp = (uint32_t *) pcmd->virt;
500 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
501
502 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
503 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
504 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
505 (npr->prliType == PRLI_FCP_TYPE)) {
506 if (npr->initiatorFunc)
507 ndlp->nlp_type |= NLP_FCP_INITIATOR;
508 if (npr->targetFunc)
509 ndlp->nlp_type |= NLP_FCP_TARGET;
510 if (npr->Retry)
511 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
512 }
513 if (rport) {
514 /* We need to update the rport role values */
515 roles = FC_RPORT_ROLE_UNKNOWN;
516 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
517 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
518 if (ndlp->nlp_type & NLP_FCP_TARGET)
519 roles |= FC_RPORT_ROLE_FCP_TARGET;
520 fc_remote_port_rolechg(rport, roles);
521 }
522}
523
524static uint32_t
525lpfc_disc_set_adisc(struct lpfc_hba * phba,
526 struct lpfc_nodelist * ndlp)
527{
528 /* Check config parameter use-adisc or FCP-2 */
529 if ((phba->cfg_use_adisc == 0) &&
530 !(phba->fc_flag & FC_RSCN_MODE)) {
531 if (!(ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
c9f8735b 532 return 0;
dea3101e 533 }
534 spin_lock_irq(phba->host->host_lock);
535 ndlp->nlp_flag |= NLP_NPR_ADISC;
536 spin_unlock_irq(phba->host->host_lock);
c9f8735b 537 return 1;
dea3101e 538}
539
540static uint32_t
541lpfc_disc_illegal(struct lpfc_hba * phba,
542 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
543{
544 lpfc_printf_log(phba,
545 KERN_ERR,
546 LOG_DISCOVERY,
547 "%d:0253 Illegal State Transition: node x%x event x%x, "
548 "state x%x Data: x%x x%x\n",
549 phba->brd_no,
550 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
551 ndlp->nlp_flag);
c9f8735b 552 return ndlp->nlp_state;
dea3101e 553}
554
555/* Start of Discovery State Machine routines */
556
557static uint32_t
558lpfc_rcv_plogi_unused_node(struct lpfc_hba * phba,
559 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
560{
561 struct lpfc_iocbq *cmdiocb;
562
563 cmdiocb = (struct lpfc_iocbq *) arg;
564
565 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
5024ab17 566 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
dea3101e 567 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
568 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
c9f8735b 569 return ndlp->nlp_state;
dea3101e 570 }
571 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
c9f8735b 572 return NLP_STE_FREED_NODE;
dea3101e 573}
574
575static uint32_t
576lpfc_rcv_els_unused_node(struct lpfc_hba * phba,
577 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
578{
579 lpfc_issue_els_logo(phba, ndlp, 0);
580 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
c9f8735b 581 return ndlp->nlp_state;
dea3101e 582}
583
584static uint32_t
585lpfc_rcv_logo_unused_node(struct lpfc_hba * phba,
586 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
587{
588 struct lpfc_iocbq *cmdiocb;
589
590 cmdiocb = (struct lpfc_iocbq *) arg;
591
592 spin_lock_irq(phba->host->host_lock);
593 ndlp->nlp_flag |= NLP_LOGO_ACC;
594 spin_unlock_irq(phba->host->host_lock);
595 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
596 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
597
c9f8735b 598 return ndlp->nlp_state;
dea3101e 599}
600
601static uint32_t
602lpfc_cmpl_logo_unused_node(struct lpfc_hba * phba,
603 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
604{
605 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
c9f8735b 606 return NLP_STE_FREED_NODE;
dea3101e 607}
608
609static uint32_t
610lpfc_device_rm_unused_node(struct lpfc_hba * phba,
611 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
612{
613 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
c9f8735b 614 return NLP_STE_FREED_NODE;
dea3101e 615}
616
617static uint32_t
618lpfc_rcv_plogi_plogi_issue(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
619 void *arg, uint32_t evt)
620{
621 struct lpfc_iocbq *cmdiocb = arg;
622 struct lpfc_dmabuf *pcmd;
623 struct serv_parm *sp;
624 uint32_t *lp;
625 struct ls_rjt stat;
626 int port_cmp;
627
628 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
629 lp = (uint32_t *) pcmd->virt;
630 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
631
632 memset(&stat, 0, sizeof (struct ls_rjt));
633
634 /* For a PLOGI, we only accept if our portname is less
635 * than the remote portname.
636 */
637 phba->fc_stat.elsLogiCol++;
638 port_cmp = memcmp(&phba->fc_portname, &sp->portName,
639 sizeof (struct lpfc_name));
640
641 if (port_cmp >= 0) {
642 /* Reject this request because the remote node will accept
643 ours */
644 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
645 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
646 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2fe165b6 647 } else {
dea3101e 648 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
649 } /* if our portname was less */
650
c9f8735b
JW		 651 return ndlp->nlp_state;
652}
653
654static uint32_t
655lpfc_rcv_logo_plogi_issue(struct lpfc_hba * phba,
656 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
657{
658 struct lpfc_iocbq *cmdiocb;
659
660 cmdiocb = (struct lpfc_iocbq *) arg;
661
662 /* software abort outstanding PLOGI */
07951076 663 lpfc_els_abort(phba, ndlp);
c9f8735b 664
82d9a2a2 665 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 666 return ndlp->nlp_state;
dea3101e 667}
668
669static uint32_t
670lpfc_rcv_els_plogi_issue(struct lpfc_hba * phba,
671 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
672{
673 struct lpfc_iocbq *cmdiocb;
674
675 cmdiocb = (struct lpfc_iocbq *) arg;
676
677 /* software abort outstanding PLOGI */
07951076 678 lpfc_els_abort(phba, ndlp);
dea3101e 679
680 if (evt == NLP_EVT_RCV_LOGO) {
681 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
2fe165b6 682 } else {
dea3101e 683 lpfc_issue_els_logo(phba, ndlp, 0);
684 }
685
686 /* Put ndlp in npr list set plogi timer for 1 sec */
5024ab17
JW		 687 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
688 spin_lock_irq(phba->host->host_lock);
689 ndlp->nlp_flag |= NLP_DELAY_TMO;
690 spin_unlock_irq(phba->host->host_lock);
691 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
692 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
dea3101e 693 ndlp->nlp_state = NLP_STE_NPR_NODE;
694 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
695
c9f8735b 696 return ndlp->nlp_state;
dea3101e 697}
698
699static uint32_t
700lpfc_cmpl_plogi_plogi_issue(struct lpfc_hba * phba,
701 struct lpfc_nodelist * ndlp, void *arg,
702 uint32_t evt)
703{
704 struct lpfc_iocbq *cmdiocb, *rspiocb;
14691150 705 struct lpfc_dmabuf *pcmd, *prsp, *mp;
dea3101e 706 uint32_t *lp;
707 IOCB_t *irsp;
708 struct serv_parm *sp;
709 LPFC_MBOXQ_t *mbox;
710
711 cmdiocb = (struct lpfc_iocbq *) arg;
712 rspiocb = cmdiocb->context_un.rsp_iocb;
713
714 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
5024ab17 715 /* Recovery from PLOGI collision logic */
c9f8735b 716 return ndlp->nlp_state;
dea3101e 717 }
718
719 irsp = &rspiocb->iocb;
720
721 if (irsp->ulpStatus)
722 goto out;
723
724 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
725
726 prsp = list_get_first(&pcmd->list,
727 struct lpfc_dmabuf,
728 list);
729 lp = (uint32_t *) prsp->virt;
730
731 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
732 if (!lpfc_check_sparm(phba, ndlp, sp, CLASS3))
733 goto out;
734
735 /* PLOGI chkparm OK */
736 lpfc_printf_log(phba,
737 KERN_INFO,
738 LOG_ELS,
739 "%d:0121 PLOGI chkparm OK "
740 "Data: x%x x%x x%x x%x\n",
741 phba->brd_no,
742 ndlp->nlp_DID, ndlp->nlp_state,
743 ndlp->nlp_flag, ndlp->nlp_rpi);
744
745 if ((phba->cfg_fcp_class == 2) &&
746 (sp->cls2.classValid)) {
747 ndlp->nlp_fcp_info |= CLASS2;
748 } else {
749 ndlp->nlp_fcp_info |= CLASS3;
750 }
751 ndlp->nlp_class_sup = 0;
752 if (sp->cls1.classValid)
753 ndlp->nlp_class_sup |= FC_COS_CLASS1;
754 if (sp->cls2.classValid)
755 ndlp->nlp_class_sup |= FC_COS_CLASS2;
756 if (sp->cls3.classValid)
757 ndlp->nlp_class_sup |= FC_COS_CLASS3;
758 if (sp->cls4.classValid)
759 ndlp->nlp_class_sup |= FC_COS_CLASS4;
760 ndlp->nlp_maxframe =
761 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
762 sp->cmn.bbRcvSizeLsb;
763
764 if (!(mbox = mempool_alloc(phba->mbox_mem_pool,
765 GFP_KERNEL)))
766 goto out;
767
768 lpfc_unreg_rpi(phba, ndlp);
769 if (lpfc_reg_login
770 (phba, irsp->un.elsreq64.remoteID,
771 (uint8_t *) sp, mbox, 0) == 0) {
2fe165b6 772 switch (ndlp->nlp_DID) {
dea3101e 773 case NameServer_DID:
774 mbox->mbox_cmpl =
775 lpfc_mbx_cmpl_ns_reg_login;
776 break;
777 case FDMI_DID:
778 mbox->mbox_cmpl =
779 lpfc_mbx_cmpl_fdmi_reg_login;
780 break;
781 default:
782 mbox->mbox_cmpl =
783 lpfc_mbx_cmpl_reg_login;
784 }
785 mbox->context2 = ndlp;
786 if (lpfc_sli_issue_mbox(phba, mbox,
787 (MBX_NOWAIT | MBX_STOP_IOCB))
788 != MBX_NOT_FINISHED) {
789 ndlp->nlp_state =
790 NLP_STE_REG_LOGIN_ISSUE;
791 lpfc_nlp_list(phba, ndlp,
792 NLP_REGLOGIN_LIST);
c9f8735b 793 return ndlp->nlp_state;
dea3101e 794 }
14691150
JS		 795 mp = (struct lpfc_dmabuf *)mbox->context1;
796 lpfc_mbuf_free(phba, mp->virt, mp->phys);
797 kfree(mp);
dea3101e 798 mempool_free(mbox, phba->mbox_mem_pool);
799 } else {
800 mempool_free(mbox, phba->mbox_mem_pool);
801 }
802
803
804 out:
805 /* Free this node since the driver cannot login or has the wrong
806 sparm */
807 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
c9f8735b 808 return NLP_STE_FREED_NODE;
dea3101e 809}
810
811static uint32_t
812lpfc_device_rm_plogi_issue(struct lpfc_hba * phba,
813 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
814{
a0f9b48d
JS		 815 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
816 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
817 return ndlp->nlp_state;
818 }
819 else {
820 /* software abort outstanding PLOGI */
07951076 821 lpfc_els_abort(phba, ndlp);
dea3101e 822
a0f9b48d
JS		 823 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
824 return NLP_STE_FREED_NODE;
825 }
dea3101e 826}
827
828static uint32_t
829lpfc_device_recov_plogi_issue(struct lpfc_hba * phba,
830 struct lpfc_nodelist * ndlp, void *arg,
831 uint32_t evt)
832{
833 /* software abort outstanding PLOGI */
07951076 834 lpfc_els_abort(phba, ndlp);
dea3101e 835
5024ab17 836 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
dea3101e 837 ndlp->nlp_state = NLP_STE_NPR_NODE;
838 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
839 spin_lock_irq(phba->host->host_lock);
a0f9b48d 840 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
dea3101e 841 spin_unlock_irq(phba->host->host_lock);
842
c9f8735b 843 return ndlp->nlp_state;
dea3101e 844}
845
846static uint32_t
847lpfc_rcv_plogi_adisc_issue(struct lpfc_hba * phba,
848 struct lpfc_nodelist * ndlp, void *arg,
849 uint32_t evt)
850{
851 struct lpfc_iocbq *cmdiocb;
852
853 /* software abort outstanding ADISC */
07951076 854 lpfc_els_abort(phba, ndlp);
dea3101e 855
856 cmdiocb = (struct lpfc_iocbq *) arg;
857
858 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
c9f8735b 859 return ndlp->nlp_state;
dea3101e 860 }
5024ab17 861 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
dea3101e 862 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
863 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
488d1469 864 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
dea3101e 865
c9f8735b 866 return ndlp->nlp_state;
dea3101e 867}
868
869static uint32_t
870lpfc_rcv_prli_adisc_issue(struct lpfc_hba * phba,
871 struct lpfc_nodelist * ndlp, void *arg,
872 uint32_t evt)
873{
874 struct lpfc_iocbq *cmdiocb;
875
876 cmdiocb = (struct lpfc_iocbq *) arg;
877
878 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
c9f8735b 879 return ndlp->nlp_state;
dea3101e 880}
881
882static uint32_t
883lpfc_rcv_logo_adisc_issue(struct lpfc_hba * phba,
884 struct lpfc_nodelist * ndlp, void *arg,
885 uint32_t evt)
886{
887 struct lpfc_iocbq *cmdiocb;
888
889 cmdiocb = (struct lpfc_iocbq *) arg;
890
891 /* software abort outstanding ADISC */
07951076 892 lpfc_els_abort(phba, ndlp);
dea3101e 893
82d9a2a2 894 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 895 return ndlp->nlp_state;
dea3101e 896}
897
898static uint32_t
899lpfc_rcv_padisc_adisc_issue(struct lpfc_hba * phba,
900 struct lpfc_nodelist * ndlp, void *arg,
901 uint32_t evt)
902{
903 struct lpfc_iocbq *cmdiocb;
904
905 cmdiocb = (struct lpfc_iocbq *) arg;
906
907 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
c9f8735b 908 return ndlp->nlp_state;
dea3101e 909}
910
911static uint32_t
912lpfc_rcv_prlo_adisc_issue(struct lpfc_hba * phba,
913 struct lpfc_nodelist * ndlp, void *arg,
914 uint32_t evt)
915{
916 struct lpfc_iocbq *cmdiocb;
917
918 cmdiocb = (struct lpfc_iocbq *) arg;
919
920 /* Treat like rcv logo */
82d9a2a2 921 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
c9f8735b 922 return ndlp->nlp_state;
dea3101e 923}
924
925static uint32_t
926lpfc_cmpl_adisc_adisc_issue(struct lpfc_hba * phba,
927 struct lpfc_nodelist * ndlp, void *arg,
928 uint32_t evt)
929{
930 struct lpfc_iocbq *cmdiocb, *rspiocb;
931 IOCB_t *irsp;
932 ADISC *ap;
933
934 cmdiocb = (struct lpfc_iocbq *) arg;
935 rspiocb = cmdiocb->context_un.rsp_iocb;
936
937 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
938 irsp = &rspiocb->iocb;
939
940 if ((irsp->ulpStatus) ||
941 (!lpfc_check_adisc(phba, ndlp, &ap->nodeName, &ap->portName))) {
dea3101e 942 /* 1 sec timeout */
943 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
944 spin_lock_irq(phba->host->host_lock);
945 ndlp->nlp_flag |= NLP_DELAY_TMO;
946 spin_unlock_irq(phba->host->host_lock);
5024ab17 947 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
dea3101e 948
949 memset(&ndlp->nlp_nodename, 0, sizeof (struct lpfc_name));
950 memset(&ndlp->nlp_portname, 0, sizeof (struct lpfc_name));
951
5024ab17 952 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
dea3101e 953 ndlp->nlp_state = NLP_STE_NPR_NODE;
954 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
955 lpfc_unreg_rpi(phba, ndlp);
c9f8735b 956 return ndlp->nlp_state;
dea3101e 957 }
5024ab17 958
2501322e 959 if (ndlp->nlp_type & NLP_FCP_TARGET) {
5024ab17 960 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
2501322e
JSEC		 961 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
962 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
963 } else {
5024ab17 964 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
2501322e
JSEC		 965 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
966 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
967 }
c9f8735b 968 return ndlp->nlp_state;
dea3101e 969}
970
971static uint32_t
972lpfc_device_rm_adisc_issue(struct lpfc_hba * phba,
973 struct lpfc_nodelist * ndlp, void *arg,
974 uint32_t evt)
975{
a0f9b48d
JS		 976 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
977 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
978 return ndlp->nlp_state;
979 }
980 else {
981 /* software abort outstanding ADISC */
07951076 982 lpfc_els_abort(phba, ndlp);
dea3101e 983
a0f9b48d
JS		 984 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
985 return NLP_STE_FREED_NODE;
986 }
dea3101e 987}
988
989static uint32_t
990lpfc_device_recov_adisc_issue(struct lpfc_hba * phba,
991 struct lpfc_nodelist * ndlp, void *arg,
992 uint32_t evt)
993{
994 /* software abort outstanding ADISC */
07951076 995 lpfc_els_abort(phba, ndlp);
dea3101e 996
5024ab17 997 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
dea3101e 998 ndlp->nlp_state = NLP_STE_NPR_NODE;
999 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1000 spin_lock_irq(phba->host->host_lock);
a0f9b48d 1001 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
c9f8735b 1002 ndlp->nlp_flag |= NLP_NPR_ADISC;
dea3101e 1003 spin_unlock_irq(phba->host->host_lock);
1004
c9f8735b 1005 return ndlp->nlp_state;
dea3101e 1006}
1007
1008static uint32_t
1009lpfc_rcv_plogi_reglogin_issue(struct lpfc_hba * phba,
1010 struct lpfc_nodelist * ndlp, void *arg,
1011 uint32_t evt)
1012{
1013 struct lpfc_iocbq *cmdiocb;
1014
1015 cmdiocb = (struct lpfc_iocbq *) arg;
1016
1017 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
c9f8735b 1018 return ndlp->nlp_state;
dea3101e 1019}
1020
1021static uint32_t
1022lpfc_rcv_prli_reglogin_issue(struct lpfc_hba * phba,
1023 struct lpfc_nodelist * ndlp, void *arg,
1024 uint32_t evt)
1025{
1026 struct lpfc_iocbq *cmdiocb;
1027
1028 cmdiocb = (struct lpfc_iocbq *) arg;
1029
1030 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
c9f8735b 1031 return ndlp->nlp_state;
dea3101e 1032}
1033
1034static uint32_t
1035lpfc_rcv_logo_reglogin_issue(struct lpfc_hba * phba,
1036 struct lpfc_nodelist * ndlp, void *arg,
1037 uint32_t evt)
1038{
1039 struct lpfc_iocbq *cmdiocb;
1040
1041 cmdiocb = (struct lpfc_iocbq *) arg;
1042
82d9a2a2 1043 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 1044 return ndlp->nlp_state;
dea3101e 1045}
1046
1047static uint32_t
1048lpfc_rcv_padisc_reglogin_issue(struct lpfc_hba * phba,
1049 struct lpfc_nodelist * ndlp, void *arg,
1050 uint32_t evt)
1051{
1052 struct lpfc_iocbq *cmdiocb;
1053
1054 cmdiocb = (struct lpfc_iocbq *) arg;
1055
1056 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
c9f8735b 1057 return ndlp->nlp_state;
dea3101e 1058}
1059
1060static uint32_t
1061lpfc_rcv_prlo_reglogin_issue(struct lpfc_hba * phba,
1062 struct lpfc_nodelist * ndlp, void *arg,
1063 uint32_t evt)
1064{
1065 struct lpfc_iocbq *cmdiocb;
1066
1067 cmdiocb = (struct lpfc_iocbq *) arg;
82d9a2a2 1068 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
c9f8735b 1069 return ndlp->nlp_state;
dea3101e 1070}
1071
1072static uint32_t
1073lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_hba * phba,
1074 struct lpfc_nodelist * ndlp,
1075 void *arg, uint32_t evt)
1076{
1077 LPFC_MBOXQ_t *pmb;
1078 MAILBOX_t *mb;
1079 uint32_t did;
1080
1081 pmb = (LPFC_MBOXQ_t *) arg;
1082 mb = &pmb->mb;
1083 did = mb->un.varWords[1];
1084 if (mb->mbxStatus) {
1085 /* RegLogin failed */
1086 lpfc_printf_log(phba,
1087 KERN_ERR,
1088 LOG_DISCOVERY,
1089 "%d:0246 RegLogin failed Data: x%x x%x x%x\n",
1090 phba->brd_no,
1091 did, mb->mbxStatus, phba->hba_state);
1092
d0e56dad
JS		 1093 /*
1094 * If RegLogin failed due to lack of HBA resources do not
1095 * retry discovery.
1096 */
1097 if (mb->mbxStatus == MBXERR_RPI_FULL) {
1098 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
1099 ndlp->nlp_state = NLP_STE_UNUSED_NODE;
1100 lpfc_nlp_list(phba, ndlp, NLP_UNUSED_LIST);
1101 return ndlp->nlp_state;
1102 }
1103
5024ab17 1104 /* Put ndlp in npr list set plogi timer for 1 sec */
dea3101e 1105 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1106 spin_lock_irq(phba->host->host_lock);
1107 ndlp->nlp_flag |= NLP_DELAY_TMO;
1108 spin_unlock_irq(phba->host->host_lock);
5024ab17 1109 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
dea3101e 1110
1111 lpfc_issue_els_logo(phba, ndlp, 0);
5024ab17 1112 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
dea3101e 1113 ndlp->nlp_state = NLP_STE_NPR_NODE;
1114 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
c9f8735b 1115 return ndlp->nlp_state;
dea3101e 1116 }
1117
dea3101e 1118 ndlp->nlp_rpi = mb->un.varWords[0];
dea3101e 1119
1120 /* Only if we are not a fabric nport do we issue PRLI */
1121 if (!(ndlp->nlp_type & NLP_FABRIC)) {
5024ab17 1122 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
dea3101e 1123 ndlp->nlp_state = NLP_STE_PRLI_ISSUE;
1124 lpfc_nlp_list(phba, ndlp, NLP_PRLI_LIST);
1125 lpfc_issue_els_prli(phba, ndlp, 0);
1126 } else {
5024ab17 1127 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
dea3101e 1128 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1129 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
1130 }
c9f8735b 1131 return ndlp->nlp_state;
dea3101e 1132}
1133
1134static uint32_t
1135lpfc_device_rm_reglogin_issue(struct lpfc_hba * phba,
1136 struct lpfc_nodelist * ndlp, void *arg,
1137 uint32_t evt)
1138{
a0f9b48d
JS		 1139 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1140 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1141 return ndlp->nlp_state;
1142 }
1143 else {
1144 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1145 return NLP_STE_FREED_NODE;
1146 }
dea3101e 1147}
1148
1149static uint32_t
1150lpfc_device_recov_reglogin_issue(struct lpfc_hba * phba,
1151 struct lpfc_nodelist * ndlp, void *arg,
1152 uint32_t evt)
1153{
5024ab17 1154 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
dea3101e 1155 ndlp->nlp_state = NLP_STE_NPR_NODE;
1156 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1157 spin_lock_irq(phba->host->host_lock);
a0f9b48d 1158 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
dea3101e 1159 spin_unlock_irq(phba->host->host_lock);
c9f8735b 1160 return ndlp->nlp_state;
dea3101e 1161}
1162
1163static uint32_t
1164lpfc_rcv_plogi_prli_issue(struct lpfc_hba * phba,
1165 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1166{
1167 struct lpfc_iocbq *cmdiocb;
1168
1169 cmdiocb = (struct lpfc_iocbq *) arg;
1170
1171 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
c9f8735b 1172 return ndlp->nlp_state;
dea3101e 1173}
1174
1175static uint32_t
1176lpfc_rcv_prli_prli_issue(struct lpfc_hba * phba,
1177 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1178{
1179 struct lpfc_iocbq *cmdiocb;
1180
1181 cmdiocb = (struct lpfc_iocbq *) arg;
1182
1183 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
c9f8735b 1184 return ndlp->nlp_state;
dea3101e 1185}
1186
1187static uint32_t
1188lpfc_rcv_logo_prli_issue(struct lpfc_hba * phba,
1189 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1190{
1191 struct lpfc_iocbq *cmdiocb;
1192
1193 cmdiocb = (struct lpfc_iocbq *) arg;
1194
1195 /* Software abort outstanding PRLI before sending acc */
07951076 1196 lpfc_els_abort(phba, ndlp);
dea3101e 1197
82d9a2a2 1198 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 1199 return ndlp->nlp_state;
dea3101e 1200}
1201
1202static uint32_t
1203lpfc_rcv_padisc_prli_issue(struct lpfc_hba * phba,
1204 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1205{
1206 struct lpfc_iocbq *cmdiocb;
1207
1208 cmdiocb = (struct lpfc_iocbq *) arg;
1209
1210 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
c9f8735b 1211 return ndlp->nlp_state;
dea3101e 1212}
1213
1214/* This routine is envoked when we rcv a PRLO request from a nport
1215 * we are logged into. We should send back a PRLO rsp setting the
1216 * appropriate bits.
1217 * NEXT STATE = PRLI_ISSUE
1218 */
1219static uint32_t
1220lpfc_rcv_prlo_prli_issue(struct lpfc_hba * phba,
1221 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1222{
1223 struct lpfc_iocbq *cmdiocb;
1224
1225 cmdiocb = (struct lpfc_iocbq *) arg;
82d9a2a2 1226 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
c9f8735b 1227 return ndlp->nlp_state;
dea3101e 1228}
1229
1230static uint32_t
1231lpfc_cmpl_prli_prli_issue(struct lpfc_hba * phba,
1232 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1233{
1234 struct lpfc_iocbq *cmdiocb, *rspiocb;
1235 IOCB_t *irsp;
1236 PRLI *npr;
1237
1238 cmdiocb = (struct lpfc_iocbq *) arg;
1239 rspiocb = cmdiocb->context_un.rsp_iocb;
1240 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1241
1242 irsp = &rspiocb->iocb;
1243 if (irsp->ulpStatus) {
5024ab17 1244 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
dea3101e 1245 ndlp->nlp_state = NLP_STE_UNMAPPED_NODE;
1246 lpfc_nlp_list(phba, ndlp, NLP_UNMAPPED_LIST);
c9f8735b 1247 return ndlp->nlp_state;
dea3101e 1248 }
1249
1250 /* Check out PRLI rsp */
1251 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1252 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
1253 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1254 (npr->prliType == PRLI_FCP_TYPE)) {
1255 if (npr->initiatorFunc)
1256 ndlp->nlp_type |= NLP_FCP_INITIATOR;
1257 if (npr->targetFunc)
1258 ndlp->nlp_type |= NLP_FCP_TARGET;
1259 if (npr->Retry)
1260 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1261 }
1262
5024ab17 1263 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
dea3101e 1264 ndlp->nlp_state = NLP_STE_MAPPED_NODE;
1265 lpfc_nlp_list(phba, ndlp, NLP_MAPPED_LIST);
c9f8735b 1266 return ndlp->nlp_state;
dea3101e 1267}
1268
1269/*! lpfc_device_rm_prli_issue
1270 *
1271 * \pre
1272 * \post
1273 * \param phba
1274 * \param ndlp
1275 * \param arg
1276 * \param evt
1277 * \return uint32_t
1278 *
1279 * \b Description:
1280 * This routine is envoked when we a request to remove a nport we are in the
1281 * process of PRLIing. We should software abort outstanding prli, unreg
1282 * login, send a logout. We will change node state to UNUSED_NODE, put it
1283 * on plogi list so it can be freed when LOGO completes.
1284 *
1285 */
1286static uint32_t
1287lpfc_device_rm_prli_issue(struct lpfc_hba * phba,
1288 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1289{
a0f9b48d
JS		 1290 if(ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1291 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1292 return ndlp->nlp_state;
1293 }
1294 else {
1295 /* software abort outstanding PLOGI */
07951076 1296 lpfc_els_abort(phba, ndlp);
dea3101e 1297
a0f9b48d
JS		 1298 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1299 return NLP_STE_FREED_NODE;
1300 }
dea3101e 1301}
1302
1303
1304/*! lpfc_device_recov_prli_issue
1305 *
1306 * \pre
1307 * \post
1308 * \param phba
1309 * \param ndlp
1310 * \param arg
1311 * \param evt
1312 * \return uint32_t
1313 *
1314 * \b Description:
1315 * The routine is envoked when the state of a device is unknown, like
1316 * during a link down. We should remove the nodelist entry from the
1317 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1318 * outstanding PRLI command, then free the node entry.
1319 */
1320static uint32_t
1321lpfc_device_recov_prli_issue(struct lpfc_hba * phba,
1322 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1323{
1324 /* software abort outstanding PRLI */
07951076 1325 lpfc_els_abort(phba, ndlp);
dea3101e 1326
5024ab17 1327 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
dea3101e 1328 ndlp->nlp_state = NLP_STE_NPR_NODE;
1329 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1330 spin_lock_irq(phba->host->host_lock);
a0f9b48d 1331 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
dea3101e 1332 spin_unlock_irq(phba->host->host_lock);
c9f8735b 1333 return ndlp->nlp_state;
dea3101e 1334}
1335
1336static uint32_t
1337lpfc_rcv_plogi_unmap_node(struct lpfc_hba * phba,
1338 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1339{
1340 struct lpfc_iocbq *cmdiocb;
1341
1342 cmdiocb = (struct lpfc_iocbq *) arg;
1343
1344 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
c9f8735b 1345 return ndlp->nlp_state;
dea3101e 1346}
1347
1348static uint32_t
1349lpfc_rcv_prli_unmap_node(struct lpfc_hba * phba,
1350 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1351{
1352 struct lpfc_iocbq *cmdiocb;
1353
1354 cmdiocb = (struct lpfc_iocbq *) arg;
1355
1356 lpfc_rcv_prli(phba, ndlp, cmdiocb);
1357 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
c9f8735b 1358 return ndlp->nlp_state;
dea3101e 1359}
1360
1361static uint32_t
1362lpfc_rcv_logo_unmap_node(struct lpfc_hba * phba,
1363 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1364{
1365 struct lpfc_iocbq *cmdiocb;
1366
1367 cmdiocb = (struct lpfc_iocbq *) arg;
1368
82d9a2a2 1369 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 1370 return ndlp->nlp_state;
dea3101e 1371}
1372
1373static uint32_t
1374lpfc_rcv_padisc_unmap_node(struct lpfc_hba * phba,
1375 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1376{
1377 struct lpfc_iocbq *cmdiocb;
1378
1379 cmdiocb = (struct lpfc_iocbq *) arg;
1380
1381 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
c9f8735b 1382 return ndlp->nlp_state;
dea3101e 1383}
1384
1385static uint32_t
1386lpfc_rcv_prlo_unmap_node(struct lpfc_hba * phba,
1387 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1388{
1389 struct lpfc_iocbq *cmdiocb;
1390
1391 cmdiocb = (struct lpfc_iocbq *) arg;
1392
82d9a2a2 1393 lpfc_els_rsp_acc(phba, ELS_CMD_PRLO, cmdiocb, ndlp, NULL, 0);
c9f8735b 1394 return ndlp->nlp_state;
dea3101e 1395}
1396
1397static uint32_t
1398lpfc_device_recov_unmap_node(struct lpfc_hba * phba,
1399 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1400{
5024ab17 1401 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
dea3101e 1402 ndlp->nlp_state = NLP_STE_NPR_NODE;
1403 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
a0f9b48d 1404 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
dea3101e 1405 lpfc_disc_set_adisc(phba, ndlp);
1406
c9f8735b 1407 return ndlp->nlp_state;
dea3101e 1408}
1409
1410static uint32_t
1411lpfc_rcv_plogi_mapped_node(struct lpfc_hba * phba,
1412 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1413{
1414 struct lpfc_iocbq *cmdiocb;
1415
1416 cmdiocb = (struct lpfc_iocbq *) arg;
1417
1418 lpfc_rcv_plogi(phba, ndlp, cmdiocb);
c9f8735b 1419 return ndlp->nlp_state;
dea3101e 1420}
1421
1422static uint32_t
1423lpfc_rcv_prli_mapped_node(struct lpfc_hba * phba,
1424 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1425{
1426 struct lpfc_iocbq *cmdiocb;
1427
1428 cmdiocb = (struct lpfc_iocbq *) arg;
1429
1430 lpfc_els_rsp_prli_acc(phba, cmdiocb, ndlp);
c9f8735b 1431 return ndlp->nlp_state;
dea3101e 1432}
1433
1434static uint32_t
1435lpfc_rcv_logo_mapped_node(struct lpfc_hba * phba,
1436 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1437{
1438 struct lpfc_iocbq *cmdiocb;
1439
1440 cmdiocb = (struct lpfc_iocbq *) arg;
1441
82d9a2a2 1442 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 1443 return ndlp->nlp_state;
dea3101e 1444}
1445
1446static uint32_t
1447lpfc_rcv_padisc_mapped_node(struct lpfc_hba * phba,
1448 struct lpfc_nodelist * ndlp, void *arg,
1449 uint32_t evt)
1450{
1451 struct lpfc_iocbq *cmdiocb;
1452
1453 cmdiocb = (struct lpfc_iocbq *) arg;
1454
1455 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
c9f8735b 1456 return ndlp->nlp_state;
dea3101e 1457}
1458
1459static uint32_t
1460lpfc_rcv_prlo_mapped_node(struct lpfc_hba * phba,
1461 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1462{
1463 struct lpfc_iocbq *cmdiocb;
1464
1465 cmdiocb = (struct lpfc_iocbq *) arg;
1466
1467 /* flush the target */
1468 spin_lock_irq(phba->host->host_lock);
1469 lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring],
1470 ndlp->nlp_sid, 0, 0, LPFC_CTX_TGT);
1471 spin_unlock_irq(phba->host->host_lock);
1472
1473 /* Treat like rcv logo */
82d9a2a2 1474 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_PRLO);
c9f8735b 1475 return ndlp->nlp_state;
dea3101e 1476}
1477
1478static uint32_t
1479lpfc_device_recov_mapped_node(struct lpfc_hba * phba,
1480 struct lpfc_nodelist * ndlp, void *arg,
1481 uint32_t evt)
1482{
5024ab17 1483 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
dea3101e 1484 ndlp->nlp_state = NLP_STE_NPR_NODE;
1485 lpfc_nlp_list(phba, ndlp, NLP_NPR_LIST);
1486 spin_lock_irq(phba->host->host_lock);
a0f9b48d 1487 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
dea3101e 1488 spin_unlock_irq(phba->host->host_lock);
1489 lpfc_disc_set_adisc(phba, ndlp);
c9f8735b 1490 return ndlp->nlp_state;
dea3101e 1491}
1492
1493static uint32_t
1494lpfc_rcv_plogi_npr_node(struct lpfc_hba * phba,
1495 struct lpfc_nodelist * ndlp, void *arg,
1496 uint32_t evt)
1497{
1498 struct lpfc_iocbq *cmdiocb;
1499
1500 cmdiocb = (struct lpfc_iocbq *) arg;
1501
1502 /* Ignore PLOGI if we have an outstanding LOGO */
1503 if (ndlp->nlp_flag & NLP_LOGO_SND) {
c9f8735b 1504 return ndlp->nlp_state;
dea3101e 1505 }
1506
1507 if (lpfc_rcv_plogi(phba, ndlp, cmdiocb)) {
1508 spin_lock_irq(phba->host->host_lock);
fdcebe28 1509 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
dea3101e 1510 spin_unlock_irq(phba->host->host_lock);
c9f8735b 1511 return ndlp->nlp_state;
dea3101e 1512 }
1513
1514 /* send PLOGI immediately, move to PLOGI issue state */
1515 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
488d1469
JS		 1516 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
1517 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1518 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
1519 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
dea3101e 1520 }
488d1469 1521
c9f8735b 1522 return ndlp->nlp_state;
dea3101e 1523}
1524
1525static uint32_t
1526lpfc_rcv_prli_npr_node(struct lpfc_hba * phba,
1527 struct lpfc_nodelist * ndlp, void *arg,
1528 uint32_t evt)
1529{
1530 struct lpfc_iocbq *cmdiocb;
1531 struct ls_rjt stat;
1532
1533 cmdiocb = (struct lpfc_iocbq *) arg;
1534
1535 memset(&stat, 0, sizeof (struct ls_rjt));
1536 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1537 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1538 lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
1539
1540 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1541 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
c9f8735b
JW		 1542 spin_lock_irq(phba->host->host_lock);
1543 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1544 spin_unlock_irq(phba->host->host_lock);
5024ab17 1545 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
dea3101e 1546 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1547 lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1548 lpfc_issue_els_adisc(phba, ndlp, 0);
1549 } else {
5024ab17 1550 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
dea3101e 1551 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1552 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
488d1469 1553 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
dea3101e 1554 }
488d1469 1555
dea3101e 1556 }
c9f8735b 1557 return ndlp->nlp_state;
dea3101e 1558}
1559
1560static uint32_t
1561lpfc_rcv_logo_npr_node(struct lpfc_hba * phba,
1562 struct lpfc_nodelist * ndlp, void *arg,
1563 uint32_t evt)
1564{
1565 struct lpfc_iocbq *cmdiocb;
1566
1567 cmdiocb = (struct lpfc_iocbq *) arg;
1568
82d9a2a2 1569 lpfc_rcv_logo(phba, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 1570 return ndlp->nlp_state;
dea3101e 1571}
1572
1573static uint32_t
1574lpfc_rcv_padisc_npr_node(struct lpfc_hba * phba,
1575 struct lpfc_nodelist * ndlp, void *arg,
1576 uint32_t evt)
1577{
1578 struct lpfc_iocbq *cmdiocb;
1579
1580 cmdiocb = (struct lpfc_iocbq *) arg;
1581
1582 lpfc_rcv_padisc(phba, ndlp, cmdiocb);
1583
33ccf8d1
JS		 1584 /*
1585 * Do not start discovery if discovery is about to start
1586 * or discovery in progress for this node. Starting discovery
1587 * here will affect the counting of discovery threads.
1588 */
2fb9bd8b
JS		 1589 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
1590 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)){
dea3101e 1591 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
5024ab17 1592 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
dea3101e 1593 ndlp->nlp_state = NLP_STE_ADISC_ISSUE;
1594 lpfc_nlp_list(phba, ndlp, NLP_ADISC_LIST);
1595 lpfc_issue_els_adisc(phba, ndlp, 0);
1596 } else {
5024ab17 1597 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
dea3101e 1598 ndlp->nlp_state = NLP_STE_PLOGI_ISSUE;
1599 lpfc_nlp_list(phba, ndlp, NLP_PLOGI_LIST);
488d1469 1600 lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
dea3101e 1601 }
1602 }
c9f8735b 1603 return ndlp->nlp_state;
dea3101e 1604}
1605
1606static uint32_t
1607lpfc_rcv_prlo_npr_node(struct lpfc_hba * phba,
1608 struct lpfc_nodelist * ndlp, void *arg,
1609 uint32_t evt)
1610{
1611 struct lpfc_iocbq *cmdiocb;
1612
1613 cmdiocb = (struct lpfc_iocbq *) arg;
1614
c9f8735b
JW		 1615 spin_lock_irq(phba->host->host_lock);
1616 ndlp->nlp_flag |= NLP_LOGO_ACC;
1617 spin_unlock_irq(phba->host->host_lock);
1618
dea3101e 1619 lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);
1620
c9f8735b
JW		 1621 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
1622 mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
1623 spin_lock_irq(phba->host->host_lock);
1624 ndlp->nlp_flag |= NLP_DELAY_TMO;
1625 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1626 spin_unlock_irq(phba->host->host_lock);
5024ab17 1627 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
c9f8735b
JW		 1628 } else {
1629 spin_lock_irq(phba->host->host_lock);
1630 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
1631 spin_unlock_irq(phba->host->host_lock);
dea3101e 1632 }
c9f8735b
JW		 1633 return ndlp->nlp_state;
1634}
dea3101e 1635
c9f8735b
JW		 1636static uint32_t
1637lpfc_cmpl_plogi_npr_node(struct lpfc_hba * phba,
1638 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1639{
1640 struct lpfc_iocbq *cmdiocb, *rspiocb;
a0f9b48d 1641 IOCB_t *irsp;
c9f8735b
JW		 1642
1643 cmdiocb = (struct lpfc_iocbq *) arg;
1644 rspiocb = cmdiocb->context_un.rsp_iocb;
a0f9b48d
JS		 1645
1646 irsp = &rspiocb->iocb;
1647 if (irsp->ulpStatus) {
1648 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1649 return NLP_STE_FREED_NODE;
1650 }
c9f8735b
JW		 1651 return ndlp->nlp_state;
1652}
1653
1654static uint32_t
1655lpfc_cmpl_prli_npr_node(struct lpfc_hba * phba,
1656 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1657{
1658 struct lpfc_iocbq *cmdiocb, *rspiocb;
a0f9b48d 1659 IOCB_t *irsp;
c9f8735b
JW		 1660
1661 cmdiocb = (struct lpfc_iocbq *) arg;
1662 rspiocb = cmdiocb->context_un.rsp_iocb;
a0f9b48d
JS		 1663
1664 irsp = &rspiocb->iocb;
1665 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1666 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1667 return NLP_STE_FREED_NODE;
1668 }
c9f8735b 1669 return ndlp->nlp_state;
dea3101e 1670}
1671
1672static uint32_t
1673lpfc_cmpl_logo_npr_node(struct lpfc_hba * phba,
1674 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1675{
1676 lpfc_unreg_rpi(phba, ndlp);
1677 /* This routine does nothing, just return the current state */
c9f8735b
JW		 1678 return ndlp->nlp_state;
1679}
1680
1681static uint32_t
1682lpfc_cmpl_adisc_npr_node(struct lpfc_hba * phba,
1683 struct lpfc_nodelist * ndlp, void *arg,
1684 uint32_t evt)
1685{
1686 struct lpfc_iocbq *cmdiocb, *rspiocb;
a0f9b48d 1687 IOCB_t *irsp;
c9f8735b
JW		 1688
1689 cmdiocb = (struct lpfc_iocbq *) arg;
1690 rspiocb = cmdiocb->context_un.rsp_iocb;
a0f9b48d
JS		 1691
1692 irsp = &rspiocb->iocb;
1693 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
1694 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1695 return NLP_STE_FREED_NODE;
1696 }
c9f8735b 1697 return ndlp->nlp_state;
dea3101e 1698}
1699
1700static uint32_t
1701lpfc_cmpl_reglogin_npr_node(struct lpfc_hba * phba,
1702 struct lpfc_nodelist * ndlp, void *arg,
1703 uint32_t evt)
1704{
1705 LPFC_MBOXQ_t *pmb;
1706 MAILBOX_t *mb;
1707
1708 pmb = (LPFC_MBOXQ_t *) arg;
1709 mb = &pmb->mb;
1710
c9f8735b
JW		 1711 if (!mb->mbxStatus)
1712 ndlp->nlp_rpi = mb->un.varWords[0];
a0f9b48d
JS		 1713 else {
1714 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
1715 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
1716 return NLP_STE_FREED_NODE;
1717 }
1718 }
c9f8735b 1719 return ndlp->nlp_state;
dea3101e 1720}
1721
1722static uint32_t
1723lpfc_device_rm_npr_node(struct lpfc_hba * phba,
1724 struct lpfc_nodelist * ndlp, void *arg,
1725 uint32_t evt)
1726{
a0f9b48d
JS		 1727 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1728 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
1729 return ndlp->nlp_state;
1730 }
dea3101e 1731 lpfc_nlp_list(phba, ndlp, NLP_NO_LIST);
c9f8735b 1732 return NLP_STE_FREED_NODE;
dea3101e 1733}
1734
1735static uint32_t
1736lpfc_device_recov_npr_node(struct lpfc_hba * phba,
1737 struct lpfc_nodelist * ndlp, void *arg,
1738 uint32_t evt)
1739{
1740 spin_lock_irq(phba->host->host_lock);
a0f9b48d 1741 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
fdcebe28 1742 spin_unlock_irq(phba->host->host_lock);
6ad42535 1743 if (ndlp->nlp_flag & NLP_DELAY_TMO) {
fdcebe28 1744 lpfc_cancel_retry_delay_tmo(phba, ndlp);
6ad42535 1745 }
c9f8735b 1746 return ndlp->nlp_state;
dea3101e 1747}
1748
1749
1750/* This next section defines the NPort Discovery State Machine */
1751
1752/* There are 4 different double linked lists nodelist entries can reside on.
1753 * The plogi list and adisc list are used when Link Up discovery or RSCN
1754 * processing is needed. Each list holds the nodes that we will send PLOGI
1755 * or ADISC on. These lists will keep track of what nodes will be effected
1756 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
1757 * The unmapped_list will contain all nodes that we have successfully logged
1758 * into at the Fibre Channel level. The mapped_list will contain all nodes
1759 * that are mapped FCP targets.
1760 */
1761/*
1762 * The bind list is a list of undiscovered (potentially non-existent) nodes
1763 * that we have saved binding information on. This information is used when
1764 * nodes transition from the unmapped to the mapped list.
1765 */
1766/* For UNUSED_NODE state, the node has just been allocated .
1767 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
1768 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
1769 * and put on the unmapped list. For ADISC processing, the node is taken off
1770 * the ADISC list and placed on either the mapped or unmapped list (depending
1771 * on its previous state). Once on the unmapped list, a PRLI is issued and the
1772 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
1773 * changed to UNMAPPED_NODE. If the completion indicates a mapped
1774 * node, the node is taken off the unmapped list. The binding list is checked
1775 * for a valid binding, or a binding is automatically assigned. If binding
1776 * assignment is unsuccessful, the node is left on the unmapped list. If
1777 * binding assignment is successful, the associated binding list entry (if
1778 * any) is removed, and the node is placed on the mapped list.
1779 */
1780/*
1781 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
c01f3208 1782 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
dea3101e 1783 * expire, all effected nodes will receive a DEVICE_RM event.
1784 */
1785/*
1786 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
1787 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
1788 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
1789 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
1790 * we will first process the ADISC list. 32 entries are processed initially and
1791 * ADISC is initited for each one. Completions / Events for each node are
1792 * funnelled thru the state machine. As each node finishes ADISC processing, it
1793 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
1794 * waiting, and the ADISC list count is identically 0, then we are done. For
1795 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
1796 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
1797 * list. 32 entries are processed initially and PLOGI is initited for each one.
1798 * Completions / Events for each node are funnelled thru the state machine. As
1799 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
1800 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
1801 * indentically 0, then we are done. We have now completed discovery / RSCN
1802 * handling. Upon completion, ALL nodes should be on either the mapped or
1803 * unmapped lists.
1804 */
1805
1806static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
1807 (struct lpfc_hba *, struct lpfc_nodelist *, void *, uint32_t) = {
1808 /* Action routine Event Current State */
1809 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
1810 lpfc_rcv_els_unused_node, /* RCV_PRLI */
1811 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
1812 lpfc_rcv_els_unused_node, /* RCV_ADISC */
1813 lpfc_rcv_els_unused_node, /* RCV_PDISC */
1814 lpfc_rcv_els_unused_node, /* RCV_PRLO */
1815 lpfc_disc_illegal, /* CMPL_PLOGI */
1816 lpfc_disc_illegal, /* CMPL_PRLI */
1817 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
1818 lpfc_disc_illegal, /* CMPL_ADISC */
1819 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1820 lpfc_device_rm_unused_node, /* DEVICE_RM */
1821 lpfc_disc_illegal, /* DEVICE_RECOVERY */
1822
1823 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
1824 lpfc_rcv_els_plogi_issue, /* RCV_PRLI */
c9f8735b 1825 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
dea3101e 1826 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
1827 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
1828 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
1829 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
1830 lpfc_disc_illegal, /* CMPL_PRLI */
1831 lpfc_disc_illegal, /* CMPL_LOGO */
1832 lpfc_disc_illegal, /* CMPL_ADISC */
1833 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1834 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
1835 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
1836
1837 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
1838 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
1839 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
1840 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
1841 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
1842 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
1843 lpfc_disc_illegal, /* CMPL_PLOGI */
1844 lpfc_disc_illegal, /* CMPL_PRLI */
1845 lpfc_disc_illegal, /* CMPL_LOGO */
1846 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
1847 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1848 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
1849 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
1850
1851 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
1852 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
1853 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
1854 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
1855 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
1856 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
1857 lpfc_disc_illegal, /* CMPL_PLOGI */
1858 lpfc_disc_illegal, /* CMPL_PRLI */
1859 lpfc_disc_illegal, /* CMPL_LOGO */
1860 lpfc_disc_illegal, /* CMPL_ADISC */
1861 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
1862 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
1863 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
1864
1865 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
1866 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
1867 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
1868 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
1869 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
1870 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
1871 lpfc_disc_illegal, /* CMPL_PLOGI */
1872 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
1873 lpfc_disc_illegal, /* CMPL_LOGO */
1874 lpfc_disc_illegal, /* CMPL_ADISC */
1875 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1876 lpfc_device_rm_prli_issue, /* DEVICE_RM */
1877 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
1878
1879 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
1880 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
1881 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
1882 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
1883 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
1884 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
1885 lpfc_disc_illegal, /* CMPL_PLOGI */
1886 lpfc_disc_illegal, /* CMPL_PRLI */
1887 lpfc_disc_illegal, /* CMPL_LOGO */
1888 lpfc_disc_illegal, /* CMPL_ADISC */
1889 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1890 lpfc_disc_illegal, /* DEVICE_RM */
1891 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
1892
1893 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
1894 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
1895 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
1896 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
1897 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
1898 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
1899 lpfc_disc_illegal, /* CMPL_PLOGI */
1900 lpfc_disc_illegal, /* CMPL_PRLI */
1901 lpfc_disc_illegal, /* CMPL_LOGO */
1902 lpfc_disc_illegal, /* CMPL_ADISC */
1903 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
1904 lpfc_disc_illegal, /* DEVICE_RM */
1905 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
1906
1907 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
1908 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
1909 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
1910 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
1911 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
1912 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
c9f8735b
JW		 1913 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
1914 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
dea3101e 1915 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
c9f8735b 1916 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
dea3101e 1917 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
1918 lpfc_device_rm_npr_node, /* DEVICE_RM */
1919 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
1920};
1921
1922int
1923lpfc_disc_state_machine(struct lpfc_hba * phba,
1924 struct lpfc_nodelist * ndlp, void *arg, uint32_t evt)
1925{
1926 uint32_t cur_state, rc;
1927 uint32_t(*func) (struct lpfc_hba *, struct lpfc_nodelist *, void *,
1928 uint32_t);
1929
1930 ndlp->nlp_disc_refcnt++;
1931 cur_state = ndlp->nlp_state;
1932
1933 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
1934 lpfc_printf_log(phba,
1935 KERN_INFO,
1936 LOG_DISCOVERY,
1937 "%d:0211 DSM in event x%x on NPort x%x in state %d "
1938 "Data: x%x\n",
1939 phba->brd_no,
1940 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
1941
1942 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
1943 rc = (func) (phba, ndlp, arg, evt);
1944
1945 /* DSM out state <rc> on NPort <nlp_DID> */
1946 lpfc_printf_log(phba,
1947 KERN_INFO,
1948 LOG_DISCOVERY,
1949 "%d:0212 DSM out state %d on NPort x%x Data: x%x\n",
1950 phba->brd_no,
1951 rc, ndlp->nlp_DID, ndlp->nlp_flag);
1952
1953 ndlp->nlp_disc_refcnt--;
1954
1955 /* Check to see if ndlp removal is deferred */
1956 if ((ndlp->nlp_disc_refcnt == 0)
1957 && (ndlp->nlp_flag & NLP_DELAY_REMOVE)) {
1958 spin_lock_irq(phba->host->host_lock);
1959 ndlp->nlp_flag &= ~NLP_DELAY_REMOVE;
1960 spin_unlock_irq(phba->host->host_lock);
1961 lpfc_nlp_remove(phba, ndlp);
c9f8735b 1962 return NLP_STE_FREED_NODE;
dea3101e 1963 }
1964 if (rc == NLP_STE_FREED_NODE)
c9f8735b 1965 return NLP_STE_FREED_NODE;
c9f8735b 1966 return rc;
dea3101e 1967}
Linux 6.x block layer and io_uring tree(s)