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lpfc: fix crash from page fault caused by use after rport delete
[linux-block.git] / drivers / scsi / lpfc / lpfc_nportdisc.c
CommitLineData
92d7f7b0 1 /*******************************************************************
dea3101e 2 * This file is part of the Emulex Linux Device Driver for *
c44ce173 3 * Fibre Channel Host Bus Adapters. *
92c13f29 4 * Copyright (C) 2004-2013 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>
5a0e3ad6 24#include <linux/slab.h>
dea3101e 25#include <linux/interrupt.h>
26
91886523 27#include <scsi/scsi.h>
dea3101e 28#include <scsi/scsi_device.h>
29#include <scsi/scsi_host.h>
30#include <scsi/scsi_transport_fc.h>
31
da0436e9 32#include "lpfc_hw4.h"
dea3101e 33#include "lpfc_hw.h"
34#include "lpfc_sli.h"
da0436e9 35#include "lpfc_sli4.h"
ea2151b4 36#include "lpfc_nl.h"
dea3101e 37#include "lpfc_disc.h"
38#include "lpfc_scsi.h"
39#include "lpfc.h"
40#include "lpfc_logmsg.h"
41#include "lpfc_crtn.h"
92d7f7b0 42#include "lpfc_vport.h"
858c9f6c 43#include "lpfc_debugfs.h"
dea3101e 44
45
46/* Called to verify a rcv'ed ADISC was intended for us. */
47static int
2e0fef85
JS		 48lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
49 struct lpfc_name *nn, struct lpfc_name *pn)
dea3101e 50{
6b5151fd
JS		 51 /* First, we MUST have a RPI registered */
52 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED))
53 return 0;
54
dea3101e 55 /* Compare the ADISC rsp WWNN / WWPN matches our internal node
56 * table entry for that node.
57 */
2e0fef85 58 if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
c9f8735b 59 return 0;
dea3101e 60
2e0fef85 61 if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
c9f8735b 62 return 0;
dea3101e 63
64 /* we match, return success */
c9f8735b 65 return 1;
dea3101e 66}
67
dea3101e 68int
2e0fef85 69lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
341af102 70 struct serv_parm *sp, uint32_t class, int flogi)
dea3101e 71{
2e0fef85 72 volatile struct serv_parm *hsp = &vport->fc_sparam;
2fb70f79
JSEC		 73 uint16_t hsp_value, ssp_value = 0;
74
75 /*
76 * The receive data field size and buffer-to-buffer receive data field
77 * size entries are 16 bits but are represented as two 8-bit fields in
78 * the driver data structure to account for rsvd bits and other control
79 * bits. Reconstruct and compare the fields as a 16-bit values before
80 * correcting the byte values.
81 */
dea3101e 82 if (sp->cls1.classValid) {
341af102
JS		 83 if (!flogi) {
84 hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
85 hsp->cls1.rcvDataSizeLsb);
86 ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
87 sp->cls1.rcvDataSizeLsb);
88 if (!ssp_value)
89 goto bad_service_param;
90 if (ssp_value > hsp_value) {
91 sp->cls1.rcvDataSizeLsb =
92 hsp->cls1.rcvDataSizeLsb;
93 sp->cls1.rcvDataSizeMsb =
94 hsp->cls1.rcvDataSizeMsb;
95 }
2fb70f79 96 }
341af102 97 } else if (class == CLASS1)
92d7f7b0 98 goto bad_service_param;
dea3101e 99 if (sp->cls2.classValid) {
341af102
JS		 100 if (!flogi) {
101 hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
102 hsp->cls2.rcvDataSizeLsb);
103 ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
104 sp->cls2.rcvDataSizeLsb);
105 if (!ssp_value)
106 goto bad_service_param;
107 if (ssp_value > hsp_value) {
108 sp->cls2.rcvDataSizeLsb =
109 hsp->cls2.rcvDataSizeLsb;
110 sp->cls2.rcvDataSizeMsb =
111 hsp->cls2.rcvDataSizeMsb;
112 }
2fb70f79 113 }
341af102 114 } else if (class == CLASS2)
92d7f7b0 115 goto bad_service_param;
dea3101e 116 if (sp->cls3.classValid) {
341af102
JS		 117 if (!flogi) {
118 hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
119 hsp->cls3.rcvDataSizeLsb);
120 ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
121 sp->cls3.rcvDataSizeLsb);
122 if (!ssp_value)
123 goto bad_service_param;
124 if (ssp_value > hsp_value) {
125 sp->cls3.rcvDataSizeLsb =
126 hsp->cls3.rcvDataSizeLsb;
127 sp->cls3.rcvDataSizeMsb =
128 hsp->cls3.rcvDataSizeMsb;
129 }
2fb70f79 130 }
341af102 131 } else if (class == CLASS3)
92d7f7b0 132 goto bad_service_param;
dea3101e 133
2fb70f79
JSEC		 134 /*
135 * Preserve the upper four bits of the MSB from the PLOGI response.
136 * These bits contain the Buffer-to-Buffer State Change Number
137 * from the target and need to be passed to the FW.
138 */
139 hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
140 ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
141 if (ssp_value > hsp_value) {
dea3101e 142 sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
2fb70f79
JSEC		 143 sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
144 (hsp->cmn.bbRcvSizeMsb & 0x0F);
145 }
dea3101e 146
dea3101e 147 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
148 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
2fb70f79 149 return 1;
92d7f7b0 150bad_service_param:
e8b62011
JS		 151 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
152 "0207 Device %x "
153 "(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
154 "invalid service parameters. Ignoring device.\n",
155 ndlp->nlp_DID,
156 sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
157 sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
158 sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
159 sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
92d7f7b0 160 return 0;
dea3101e 161}
162
163static void *
2e0fef85 164lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
92d7f7b0 165 struct lpfc_iocbq *rspiocb)
dea3101e 166{
167 struct lpfc_dmabuf *pcmd, *prsp;
168 uint32_t *lp;
169 void *ptr = NULL;
170 IOCB_t *irsp;
171
172 irsp = &rspiocb->iocb;
173 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
174
175 /* For lpfc_els_abort, context2 could be zero'ed to delay
176 * freeing associated memory till after ABTS completes.
177 */
178 if (pcmd) {
179 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
180 list);
181 if (prsp) {
182 lp = (uint32_t *) prsp->virt;
183 ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
184 }
2fe165b6 185 } else {
dea3101e 186 /* Force ulpStatus error since we are returning NULL ptr */
187 if (!(irsp->ulpStatus)) {
188 irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
189 irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
190 }
191 ptr = NULL;
192 }
c9f8735b 193 return ptr;
dea3101e 194}
195
196
2a9bf3d0 197
dea3101e 198/*
199 * Free resources / clean up outstanding I/Os
200 * associated with a LPFC_NODELIST entry. This
201 * routine effectively results in a "software abort".
202 */
203int
2e0fef85 204lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
dea3101e 205{
2a9bf3d0 206 LIST_HEAD(abort_list);
2e0fef85
JS		 207 struct lpfc_sli *psli = &phba->sli;
208 struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
dea3101e 209 struct lpfc_iocbq *iocb, *next_iocb;
dea3101e 210
211 /* Abort outstanding I/O on NPort <nlp_DID> */
e8b62011 212 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
2a9bf3d0 213 "2819 Abort outstanding I/O on NPort x%x "
e8b62011
JS		 214 "Data: x%x x%x x%x\n",
215 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
216 ndlp->nlp_rpi);
0976e1a6 217 /* Clean up all fabric IOs first.*/
92d7f7b0 218 lpfc_fabric_abort_nport(ndlp);
dea3101e 219
0976e1a6
JS		 220 /*
221 * Lock the ELS ring txcmplq for SLI3/SLI4 and build a local list
222 * of all ELS IOs that need an ABTS. The IOs need to stay on the
223 * txcmplq so that the abort operation completes them successfully.
224 */
2e0fef85 225 spin_lock_irq(&phba->hbalock);
0976e1a6
JS		 226 if (phba->sli_rev == LPFC_SLI_REV4)
227 spin_lock(&pring->ring_lock);
228 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
229 /* Add to abort_list on on NDLP match. */
2a9bf3d0
JS		 230 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
231 list_add_tail(&iocb->dlist, &abort_list);
07951076 232 }
0976e1a6
JS		 233 if (phba->sli_rev == LPFC_SLI_REV4)
234 spin_unlock(&pring->ring_lock);
2e0fef85 235 spin_unlock_irq(&phba->hbalock);
dea3101e 236
0976e1a6 237 /* Abort the targeted IOs and remove them from the abort list. */
2a9bf3d0
JS		 238 list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
239 spin_lock_irq(&phba->hbalock);
240 list_del_init(&iocb->dlist);
241 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
242 spin_unlock_irq(&phba->hbalock);
243 }
244
0976e1a6
JS		 245 INIT_LIST_HEAD(&abort_list);
246
247 /* Now process the txq */
248 spin_lock_irq(&phba->hbalock);
249 if (phba->sli_rev == LPFC_SLI_REV4)
250 spin_lock(&pring->ring_lock);
251
252 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
253 /* Check to see if iocb matches the nport we are looking for */
254 if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
255 list_del_init(&iocb->list);
256 list_add_tail(&iocb->list, &abort_list);
257 }
258 }
259
260 if (phba->sli_rev == LPFC_SLI_REV4)
261 spin_unlock(&pring->ring_lock);
262 spin_unlock_irq(&phba->hbalock);
263
a257bf90 264 /* Cancel all the IOCBs from the completions list */
0976e1a6
JS		 265 lpfc_sli_cancel_iocbs(phba, &abort_list,
266 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
2534ba75 267
0d2b6b83 268 lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
c9f8735b 269 return 0;
dea3101e 270}
271
272static int
2e0fef85 273lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
92d7f7b0 274 struct lpfc_iocbq *cmdiocb)
dea3101e 275{
2e0fef85
JS		 276 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
277 struct lpfc_hba *phba = vport->phba;
dea3101e 278 struct lpfc_dmabuf *pcmd;
279 uint32_t *lp;
280 IOCB_t *icmd;
281 struct serv_parm *sp;
282 LPFC_MBOXQ_t *mbox;
283 struct ls_rjt stat;
284 int rc;
285
286 memset(&stat, 0, sizeof (struct ls_rjt));
695a814e 287 if (vport->port_state <= LPFC_FDISC) {
dea3101e 288 /* Before responding to PLOGI, check for pt2pt mode.
289 * If we are pt2pt, with an outstanding FLOGI, abort
290 * the FLOGI and resend it first.
291 */
2e0fef85 292 if (vport->fc_flag & FC_PT2PT) {
92d7f7b0 293 lpfc_els_abort_flogi(phba);
2e0fef85 294 if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
dea3101e 295 /* If the other side is supposed to initiate
296 * the PLOGI anyway, just ACC it now and
297 * move on with discovery.
298 */
299 phba->fc_edtov = FF_DEF_EDTOV;
300 phba->fc_ratov = FF_DEF_RATOV;
301 /* Start discovery - this should just do
302 CLEAR_LA */
2e0fef85 303 lpfc_disc_start(vport);
ed957684 304 } else
2e0fef85 305 lpfc_initial_flogi(vport);
2fe165b6 306 } else {
dea3101e 307 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
308 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
2e0fef85 309 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
858c9f6c 310 ndlp, NULL);
dea3101e 311 return 0;
312 }
313 }
314 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
315 lp = (uint32_t *) pcmd->virt;
316 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
a8adb832
JS		 317 if (wwn_to_u64(sp->portName.u.wwn) == 0) {
318 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
319 "0140 PLOGI Reject: invalid nname\n");
320 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
321 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
322 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
323 NULL);
324 return 0;
325 }
326 if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
327 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
328 "0141 PLOGI Reject: invalid pname\n");
329 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
330 stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
331 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
332 NULL);
333 return 0;
334 }
341af102 335 if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
dea3101e 336 /* Reject this request because invalid parameters */
337 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
338 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
858c9f6c
JS		 339 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
340 NULL);
c9f8735b 341 return 0;
dea3101e 342 }
343 icmd = &cmdiocb->iocb;
344
345 /* PLOGI chkparm OK */
e8b62011 346 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
e74c03c8
JS		 347 "0114 PLOGI chkparm OK Data: x%x x%x x%x "
348 "x%x x%x x%x\n",
e8b62011 349 ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
e74c03c8
JS		 350 ndlp->nlp_rpi, vport->port_state,
351 vport->fc_flag);
dea3101e 352
3de2a653 353 if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
dea3101e 354 ndlp->nlp_fcp_info |= CLASS2;
ed957684 355 else
dea3101e 356 ndlp->nlp_fcp_info |= CLASS3;
2e0fef85 357
dea3101e 358 ndlp->nlp_class_sup = 0;
359 if (sp->cls1.classValid)
360 ndlp->nlp_class_sup |= FC_COS_CLASS1;
361 if (sp->cls2.classValid)
362 ndlp->nlp_class_sup |= FC_COS_CLASS2;
363 if (sp->cls3.classValid)
364 ndlp->nlp_class_sup |= FC_COS_CLASS3;
365 if (sp->cls4.classValid)
366 ndlp->nlp_class_sup |= FC_COS_CLASS4;
367 ndlp->nlp_maxframe =
368 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
369
0558056c 370 /* no need to reg_login if we are already in one of these states */
2fe165b6 371 switch (ndlp->nlp_state) {
dea3101e 372 case NLP_STE_NPR_NODE:
373 if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
374 break;
375 case NLP_STE_REG_LOGIN_ISSUE:
376 case NLP_STE_PRLI_ISSUE:
377 case NLP_STE_UNMAPPED_NODE:
378 case NLP_STE_MAPPED_NODE:
0558056c
JS		 379 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
380 return 1;
dea3101e 381 }
382
939723a4 383 /* Check for Nport to NPort pt2pt protocol */
92d7f7b0
JS		 384 if ((vport->fc_flag & FC_PT2PT) &&
385 !(vport->fc_flag & FC_PT2PT_PLOGI)) {
939723a4 386
dea3101e 387 /* rcv'ed PLOGI decides what our NPortId will be */
2e0fef85 388 vport->fc_myDID = icmd->un.rcvels.parmRo;
dea3101e 389 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
390 if (mbox == NULL)
391 goto out;
392 lpfc_config_link(phba, mbox);
393 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
ed957684 394 mbox->vport = vport;
0b727fea 395 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
dea3101e 396 if (rc == MBX_NOT_FINISHED) {
92d7f7b0 397 mempool_free(mbox, phba->mbox_mem_pool);
dea3101e 398 goto out;
399 }
939723a4
JS		 400 /*
401 * For SLI4, the VFI/VPI are registered AFTER the
402 * Nport with the higher WWPN sends us a PLOGI with
403 * our assigned NPortId.
404 */
405 if (phba->sli_rev == LPFC_SLI_REV4)
406 lpfc_issue_reg_vfi(vport);
dea3101e 407
2e0fef85 408 lpfc_can_disctmo(vport);
dea3101e 409 }
410 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2e0fef85 411 if (!mbox)
dea3101e 412 goto out;
413
6b5151fd
JS		 414 /* Registering an existing RPI behaves differently for SLI3 vs SLI4 */
415 if (phba->sli_rev == LPFC_SLI_REV4)
416 lpfc_unreg_rpi(vport, ndlp);
417
6fb120a7 418 rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
4042629e 419 (uint8_t *) sp, mbox, ndlp->nlp_rpi);
2e0fef85
JS		 420 if (rc) {
421 mempool_free(mbox, phba->mbox_mem_pool);
dea3101e 422 goto out;
423 }
424
425 /* ACC PLOGI rsp command needs to execute first,
426 * queue this mbox command to be processed later.
427 */
428 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
329f9bc7
JS		 429 /*
430 * mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
431 * command issued in lpfc_cmpl_els_acc().
432 */
2e0fef85
JS		 433 mbox->vport = vport;
434 spin_lock_irq(shost->host_lock);
5024ab17 435 ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
2e0fef85 436 spin_unlock_irq(shost->host_lock);
dea3101e 437
33ccf8d1
JS		 438 /*
439 * If there is an outstanding PLOGI issued, abort it before
440 * sending ACC rsp for received PLOGI. If pending plogi
441 * is not canceled here, the plogi will be rejected by
442 * remote port and will be retried. On a configuration with
443 * single discovery thread, this will cause a huge delay in
444 * discovery. Also this will cause multiple state machines
445 * running in parallel for this node.
446 */
447 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
448 /* software abort outstanding PLOGI */
07951076 449 lpfc_els_abort(phba, ndlp);
33ccf8d1
JS		 450 }
451
858c9f6c 452 if ((vport->port_type == LPFC_NPIV_PORT &&
3de2a653 453 vport->cfg_restrict_login)) {
858c9f6c
JS		 454
455 /* In order to preserve RPIs, we want to cleanup
456 * the default RPI the firmware created to rcv
457 * this ELS request. The only way to do this is
458 * to register, then unregister the RPI.
459 */
460 spin_lock_irq(shost->host_lock);
461 ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
462 spin_unlock_irq(shost->host_lock);
463 stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
464 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
0a8a86fa 465 rc = lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
858c9f6c 466 ndlp, mbox);
0a8a86fa
JS		 467 if (rc)
468 mempool_free(mbox, phba->mbox_mem_pool);
858c9f6c
JS		 469 return 1;
470 }
0a8a86fa
JS		 471 rc = lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
472 if (rc)
473 mempool_free(mbox, phba->mbox_mem_pool);
c9f8735b 474 return 1;
dea3101e 475out:
476 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
477 stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
858c9f6c 478 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
c9f8735b 479 return 0;
dea3101e 480}
481
6b5151fd
JS		 482/**
483 * lpfc_mbx_cmpl_resume_rpi - Resume RPI completion routine
484 * @phba: pointer to lpfc hba data structure.
485 * @mboxq: pointer to mailbox object
486 *
487 * This routine is invoked to issue a completion to a rcv'ed
488 * ADISC or PDISC after the paused RPI has been resumed.
489 **/
490static void
491lpfc_mbx_cmpl_resume_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
492{
493 struct lpfc_vport *vport;
494 struct lpfc_iocbq *elsiocb;
495 struct lpfc_nodelist *ndlp;
496 uint32_t cmd;
497
498 elsiocb = (struct lpfc_iocbq *)mboxq->context1;
499 ndlp = (struct lpfc_nodelist *) mboxq->context2;
500 vport = mboxq->vport;
501 cmd = elsiocb->drvrTimeout;
502
503 if (cmd == ELS_CMD_ADISC) {
504 lpfc_els_rsp_adisc_acc(vport, elsiocb, ndlp);
505 } else {
506 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, elsiocb,
507 ndlp, NULL);
508 }
509 kfree(elsiocb);
72859909 510 mempool_free(mboxq, phba->mbox_mem_pool);
6b5151fd
JS		 511}
512
dea3101e 513static int
2e0fef85 514lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
dea3101e 515 struct lpfc_iocbq *cmdiocb)
516{
2e0fef85 517 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6b5151fd 518 struct lpfc_iocbq *elsiocb;
dea3101e 519 struct lpfc_dmabuf *pcmd;
2e0fef85
JS		 520 struct serv_parm *sp;
521 struct lpfc_name *pnn, *ppn;
dea3101e 522 struct ls_rjt stat;
523 ADISC *ap;
524 IOCB_t *icmd;
525 uint32_t *lp;
526 uint32_t cmd;
527
528 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
529 lp = (uint32_t *) pcmd->virt;
530
531 cmd = *lp++;
532 if (cmd == ELS_CMD_ADISC) {
533 ap = (ADISC *) lp;
534 pnn = (struct lpfc_name *) & ap->nodeName;
535 ppn = (struct lpfc_name *) & ap->portName;
536 } else {
537 sp = (struct serv_parm *) lp;
538 pnn = (struct lpfc_name *) & sp->nodeName;
539 ppn = (struct lpfc_name *) & sp->portName;
540 }
541
542 icmd = &cmdiocb->iocb;
2e0fef85 543 if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
6b5151fd
JS		 544
545 /*
546 * As soon as we send ACC, the remote NPort can
547 * start sending us data. Thus, for SLI4 we must
548 * resume the RPI before the ACC goes out.
549 */
550 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
551 elsiocb = kmalloc(sizeof(struct lpfc_iocbq),
552 GFP_KERNEL);
553 if (elsiocb) {
554
555 /* Save info from cmd IOCB used in rsp */
556 memcpy((uint8_t *)elsiocb, (uint8_t *)cmdiocb,
557 sizeof(struct lpfc_iocbq));
558
559 /* Save the ELS cmd */
560 elsiocb->drvrTimeout = cmd;
561
562 lpfc_sli4_resume_rpi(ndlp,
563 lpfc_mbx_cmpl_resume_rpi, elsiocb);
564 goto out;
565 }
566 }
567
dea3101e 568 if (cmd == ELS_CMD_ADISC) {
2e0fef85 569 lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
2fe165b6 570 } else {
6b5151fd
JS		 571 lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb,
572 ndlp, NULL);
dea3101e 573 }
6b5151fd
JS		 574out:
575 /* If we are authenticated, move to the proper state */
576 if (ndlp->nlp_type & NLP_FCP_TARGET)
577 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
578 else
579 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
580
c9f8735b 581 return 1;
dea3101e 582 }
583 /* Reject this request because invalid parameters */
584 stat.un.b.lsRjtRsvd0 = 0;
585 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
586 stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
587 stat.un.b.vendorUnique = 0;
858c9f6c 588 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
dea3101e 589
dea3101e 590 /* 1 sec timeout */
256ec0d0 591 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
dea3101e 592
2e0fef85 593 spin_lock_irq(shost->host_lock);
dea3101e 594 ndlp->nlp_flag |= NLP_DELAY_TMO;
2e0fef85 595 spin_unlock_irq(shost->host_lock);
5024ab17
JW		 596 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
597 ndlp->nlp_prev_state = ndlp->nlp_state;
2e0fef85 598 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
c9f8735b 599 return 0;
dea3101e 600}
601
602static int
2e0fef85
JS		 603lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
604 struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
dea3101e 605{
2e0fef85 606 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4b40c59e
JS		 607 struct lpfc_hba *phba = vport->phba;
608 struct lpfc_vport **vports;
609 int i, active_vlink_present = 0 ;
2e0fef85
JS		 610
611 /* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
dea3101e 612 /* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
613 * PLOGIs during LOGO storms from a device.
614 */
2e0fef85 615 spin_lock_irq(shost->host_lock);
dea3101e 616 ndlp->nlp_flag |= NLP_LOGO_ACC;
2e0fef85 617 spin_unlock_irq(shost->host_lock);
82d9a2a2 618 if (els_cmd == ELS_CMD_PRLO)
51ef4c26 619 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
82d9a2a2 620 else
51ef4c26 621 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4b40c59e
JS		 622 if (ndlp->nlp_DID == Fabric_DID) {
623 if (vport->port_state <= LPFC_FDISC)
624 goto out;
6fb120a7 625 lpfc_linkdown_port(vport);
6fb120a7 626 spin_lock_irq(shost->host_lock);
4b40c59e 627 vport->fc_flag |= FC_VPORT_LOGO_RCVD;
6fb120a7 628 spin_unlock_irq(shost->host_lock);
4b40c59e
JS		 629 vports = lpfc_create_vport_work_array(phba);
630 if (vports) {
631 for (i = 0; i <= phba->max_vports && vports[i] != NULL;
632 i++) {
633 if ((!(vports[i]->fc_flag &
634 FC_VPORT_LOGO_RCVD)) &&
635 (vports[i]->port_state > LPFC_FDISC)) {
636 active_vlink_present = 1;
637 break;
638 }
639 }
640 lpfc_destroy_vport_work_array(phba, vports);
641 }
dea3101e 642
4b40c59e
JS		 643 if (active_vlink_present) {
644 /*
645 * If there are other active VLinks present,
646 * re-instantiate the Vlink using FDISC.
647 */
256ec0d0
JS		 648 mod_timer(&ndlp->nlp_delayfunc,
649 jiffies + msecs_to_jiffies(1000));
4b40c59e
JS		 650 spin_lock_irq(shost->host_lock);
651 ndlp->nlp_flag |= NLP_DELAY_TMO;
652 spin_unlock_irq(shost->host_lock);
653 ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
654 vport->port_state = LPFC_FDISC;
655 } else {
656 spin_lock_irq(shost->host_lock);
657 phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
658 spin_unlock_irq(shost->host_lock);
659 lpfc_retry_pport_discovery(phba);
660 }
6fb120a7
JS		 661 } else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
662 ((ndlp->nlp_type & NLP_FCP_TARGET) ||
663 !(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
664 (ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
dea3101e 665 /* Only try to re-login if this is NOT a Fabric Node */
256ec0d0
JS		 666 mod_timer(&ndlp->nlp_delayfunc,
667 jiffies + msecs_to_jiffies(1000 * 1));
2e0fef85 668 spin_lock_irq(shost->host_lock);
dea3101e 669 ndlp->nlp_flag |= NLP_DELAY_TMO;
2e0fef85 670 spin_unlock_irq(shost->host_lock);
dea3101e 671
5024ab17 672 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
c9f8735b 673 }
4b40c59e 674out:
87af33fe
JS		 675 ndlp->nlp_prev_state = ndlp->nlp_state;
676 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
dea3101e 677
2e0fef85 678 spin_lock_irq(shost->host_lock);
dea3101e 679 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2e0fef85 680 spin_unlock_irq(shost->host_lock);
dea3101e 681 /* The driver has to wait until the ACC completes before it continues
682 * processing the LOGO. The action will resume in
683 * lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
684 * unreg_login, the driver waits so the ACC does not get aborted.
685 */
c9f8735b 686 return 0;
dea3101e 687}
688
689static void
2e0fef85
JS		 690lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
691 struct lpfc_iocbq *cmdiocb)
dea3101e 692{
693 struct lpfc_dmabuf *pcmd;
694 uint32_t *lp;
695 PRLI *npr;
696 struct fc_rport *rport = ndlp->rport;
697 u32 roles;
698
699 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
700 lp = (uint32_t *) pcmd->virt;
701 npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
702
703 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
704 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
3cb01c57 705 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
92d7f7b0 706 if (npr->prliType == PRLI_FCP_TYPE) {
dea3101e 707 if (npr->initiatorFunc)
708 ndlp->nlp_type |= NLP_FCP_INITIATOR;
3cb01c57 709 if (npr->targetFunc) {
dea3101e 710 ndlp->nlp_type |= NLP_FCP_TARGET;
3cb01c57
JS		 711 if (npr->writeXferRdyDis)
712 ndlp->nlp_flag |= NLP_FIRSTBURST;
713 }
dea3101e 714 if (npr->Retry)
715 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
716 }
717 if (rport) {
718 /* We need to update the rport role values */
719 roles = FC_RPORT_ROLE_UNKNOWN;
720 if (ndlp->nlp_type & NLP_FCP_INITIATOR)
721 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
722 if (ndlp->nlp_type & NLP_FCP_TARGET)
723 roles |= FC_RPORT_ROLE_FCP_TARGET;
858c9f6c
JS		 724
725 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
726 "rport rolechg: role:x%x did:x%x flg:x%x",
727 roles, ndlp->nlp_DID, ndlp->nlp_flag);
728
dea3101e 729 fc_remote_port_rolechg(rport, roles);
730 }
731}
732
733static uint32_t
2e0fef85 734lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
dea3101e 735{
2e0fef85 736 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2e0fef85 737
4042629e 738 if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
51ef4c26
JS		 739 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
740 return 0;
741 }
742
1b32f6aa
JS		 743 if (!(vport->fc_flag & FC_PT2PT)) {
744 /* Check config parameter use-adisc or FCP-2 */
745 if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
ffc95493
JS		 746 ((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
747 (ndlp->nlp_type & NLP_FCP_TARGET))) {
1b32f6aa
JS		 748 spin_lock_irq(shost->host_lock);
749 ndlp->nlp_flag |= NLP_NPR_ADISC;
750 spin_unlock_irq(shost->host_lock);
751 return 1;
752 }
92d7f7b0
JS		 753 }
754 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
755 lpfc_unreg_rpi(vport, ndlp);
756 return 0;
dea3101e 757}
6d368e53 758
78730cfe 759/**
25985edc 760 * lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
78730cfe
JS		 761 * @phba : Pointer to lpfc_hba structure.
762 * @vport: Pointer to lpfc_vport structure.
763 * @rpi : rpi to be release.
764 *
765 * This function will send a unreg_login mailbox command to the firmware
766 * to release a rpi.
767 **/
768void
769lpfc_release_rpi(struct lpfc_hba *phba,
770 struct lpfc_vport *vport,
771 uint16_t rpi)
772{
773 LPFC_MBOXQ_t *pmb;
774 int rc;
775
776 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
777 GFP_KERNEL);
778 if (!pmb)
779 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
780 "2796 mailbox memory allocation failed \n");
781 else {
782 lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
783 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
784 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
785 if (rc == MBX_NOT_FINISHED)
786 mempool_free(pmb, phba->mbox_mem_pool);
787 }
788}
dea3101e 789
790static uint32_t
2e0fef85
JS		 791lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
792 void *arg, uint32_t evt)
dea3101e 793{
78730cfe
JS		 794 struct lpfc_hba *phba;
795 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
796 MAILBOX_t *mb;
797 uint16_t rpi;
798
799 phba = vport->phba;
800 /* Release the RPI if reglogin completing */
801 if (!(phba->pport->load_flag & FC_UNLOADING) &&
802 (evt == NLP_EVT_CMPL_REG_LOGIN) &&
803 (!pmb->u.mb.mbxStatus)) {
804 mb = &pmb->u.mb;
805 rpi = pmb->u.mb.un.varWords[0];
806 lpfc_release_rpi(phba, vport, rpi);
807 }
e8b62011 808 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
e47c9093 809 "0271 Illegal State Transition: node x%x "
e8b62011
JS		 810 "event x%x, state x%x Data: x%x x%x\n",
811 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
812 ndlp->nlp_flag);
c9f8735b 813 return ndlp->nlp_state;
dea3101e 814}
815
87af33fe
JS		 816static uint32_t
817lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
818 void *arg, uint32_t evt)
819{
820 /* This transition is only legal if we previously
821 * rcv'ed a PLOGI. Since we don't want 2 discovery threads
822 * working on the same NPortID, do nothing for this thread
823 * to stop it.
824 */
825 if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
826 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
e47c9093 827 "0272 Illegal State Transition: node x%x "
87af33fe
JS		 828 "event x%x, state x%x Data: x%x x%x\n",
829 ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
830 ndlp->nlp_flag);
831 }
832 return ndlp->nlp_state;
833}
834
dea3101e 835/* Start of Discovery State Machine routines */
836
837static uint32_t
2e0fef85
JS		 838lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
839 void *arg, uint32_t evt)
dea3101e 840{
841 struct lpfc_iocbq *cmdiocb;
842
843 cmdiocb = (struct lpfc_iocbq *) arg;
844
2e0fef85 845 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
c9f8735b 846 return ndlp->nlp_state;
dea3101e 847 }
c9f8735b 848 return NLP_STE_FREED_NODE;
dea3101e 849}
850
851static uint32_t
2e0fef85
JS		 852lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
853 void *arg, uint32_t evt)
dea3101e 854{
2e0fef85 855 lpfc_issue_els_logo(vport, ndlp, 0);
c9f8735b 856 return ndlp->nlp_state;
dea3101e 857}
858
859static uint32_t
2e0fef85
JS		 860lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
861 void *arg, uint32_t evt)
dea3101e 862{
2e0fef85
JS		 863 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
864 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 865
2e0fef85 866 spin_lock_irq(shost->host_lock);
dea3101e 867 ndlp->nlp_flag |= NLP_LOGO_ACC;
2e0fef85 868 spin_unlock_irq(shost->host_lock);
51ef4c26 869 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
dea3101e 870
c9f8735b 871 return ndlp->nlp_state;
dea3101e 872}
873
874static uint32_t
2e0fef85
JS		 875lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
876 void *arg, uint32_t evt)
dea3101e 877{
c9f8735b 878 return NLP_STE_FREED_NODE;
dea3101e 879}
880
881static uint32_t
2e0fef85
JS		 882lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
883 void *arg, uint32_t evt)
dea3101e 884{
c9f8735b 885 return NLP_STE_FREED_NODE;
dea3101e 886}
887
df9e1b59
JS		 888static uint32_t
889lpfc_device_recov_unused_node(struct lpfc_vport *vport,
890 struct lpfc_nodelist *ndlp,
891 void *arg, uint32_t evt)
892{
893 return ndlp->nlp_state;
894}
895
dea3101e 896static uint32_t
2e0fef85 897lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
dea3101e 898 void *arg, uint32_t evt)
899{
0d2b6b83 900 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2e0fef85 901 struct lpfc_hba *phba = vport->phba;
dea3101e 902 struct lpfc_iocbq *cmdiocb = arg;
2e0fef85
JS		 903 struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
904 uint32_t *lp = (uint32_t *) pcmd->virt;
905 struct serv_parm *sp = (struct serv_parm *) (lp + 1);
dea3101e 906 struct ls_rjt stat;
907 int port_cmp;
908
dea3101e 909 memset(&stat, 0, sizeof (struct ls_rjt));
910
911 /* For a PLOGI, we only accept if our portname is less
912 * than the remote portname.
913 */
914 phba->fc_stat.elsLogiCol++;
2e0fef85 915 port_cmp = memcmp(&vport->fc_portname, &sp->portName,
92d7f7b0 916 sizeof(struct lpfc_name));
dea3101e 917
918 if (port_cmp >= 0) {
919 /* Reject this request because the remote node will accept
920 ours */
921 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
922 stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
858c9f6c
JS		 923 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
924 NULL);
2fe165b6 925 } else {
0d2b6b83
JS		 926 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
927 (ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
928 (vport->num_disc_nodes)) {
929 spin_lock_irq(shost->host_lock);
930 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
931 spin_unlock_irq(shost->host_lock);
932 /* Check if there are more PLOGIs to be sent */
933 lpfc_more_plogi(vport);
934 if (vport->num_disc_nodes == 0) {
935 spin_lock_irq(shost->host_lock);
936 vport->fc_flag &= ~FC_NDISC_ACTIVE;
937 spin_unlock_irq(shost->host_lock);
938 lpfc_can_disctmo(vport);
939 lpfc_end_rscn(vport);
940 }
941 }
2e0fef85 942 } /* If our portname was less */
dea3101e 943
c9f8735b
JW		 944 return ndlp->nlp_state;
945}
946
92d7f7b0
JS		 947static uint32_t
948lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
949 void *arg, uint32_t evt)
950{
951 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
952 struct ls_rjt stat;
953
954 memset(&stat, 0, sizeof (struct ls_rjt));
955 stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
956 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
858c9f6c 957 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
92d7f7b0
JS		 958 return ndlp->nlp_state;
959}
960
c9f8735b 961static uint32_t
2e0fef85
JS		 962lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
963 void *arg, uint32_t evt)
c9f8735b 964{
2e0fef85 965 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
c9f8735b 966
92d7f7b0 967 /* software abort outstanding PLOGI */
2e0fef85 968 lpfc_els_abort(vport->phba, ndlp);
c9f8735b 969
2e0fef85 970 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 971 return ndlp->nlp_state;
dea3101e 972}
973
974static uint32_t
2e0fef85
JS		 975lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
976 void *arg, uint32_t evt)
dea3101e 977{
2e0fef85
JS		 978 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
979 struct lpfc_hba *phba = vport->phba;
980 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 981
982 /* software abort outstanding PLOGI */
07951076 983 lpfc_els_abort(phba, ndlp);
dea3101e 984
985 if (evt == NLP_EVT_RCV_LOGO) {
51ef4c26 986 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
2fe165b6 987 } else {
2e0fef85 988 lpfc_issue_els_logo(vport, ndlp, 0);
dea3101e 989 }
990
2e0fef85 991 /* Put ndlp in npr state set plogi timer for 1 sec */
256ec0d0 992 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000 * 1));
2e0fef85 993 spin_lock_irq(shost->host_lock);
5024ab17 994 ndlp->nlp_flag |= NLP_DELAY_TMO;
2e0fef85 995 spin_unlock_irq(shost->host_lock);
5024ab17
JW		 996 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
997 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
2e0fef85 998 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
dea3101e 999
c9f8735b 1000 return ndlp->nlp_state;
dea3101e 1001}
1002
1003static uint32_t
2e0fef85
JS		 1004lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
1005 struct lpfc_nodelist *ndlp,
1006 void *arg,
dea3101e 1007 uint32_t evt)
1008{
2e0fef85 1009 struct lpfc_hba *phba = vport->phba;
0ff10d46 1010 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2e0fef85 1011 struct lpfc_iocbq *cmdiocb, *rspiocb;
14691150 1012 struct lpfc_dmabuf *pcmd, *prsp, *mp;
dea3101e 1013 uint32_t *lp;
1014 IOCB_t *irsp;
1015 struct serv_parm *sp;
1016 LPFC_MBOXQ_t *mbox;
1017
1018 cmdiocb = (struct lpfc_iocbq *) arg;
1019 rspiocb = cmdiocb->context_un.rsp_iocb;
1020
1021 if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
5024ab17 1022 /* Recovery from PLOGI collision logic */
c9f8735b 1023 return ndlp->nlp_state;
dea3101e 1024 }
1025
1026 irsp = &rspiocb->iocb;
1027
1028 if (irsp->ulpStatus)
1029 goto out;
1030
1031 pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
1032
2e0fef85 1033 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
dea3101e 1034
2e0fef85 1035 lp = (uint32_t *) prsp->virt;
dea3101e 1036 sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
58da1ffb
JS		 1037
1038 /* Some switches have FDMI servers returning 0 for WWN */
1039 if ((ndlp->nlp_DID != FDMI_DID) &&
1040 (wwn_to_u64(sp->portName.u.wwn) == 0 ||
1041 wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
a8adb832
JS		 1042 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1043 "0142 PLOGI RSP: Invalid WWN.\n");
1044 goto out;
1045 }
341af102 1046 if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
dea3101e 1047 goto out;
dea3101e 1048 /* PLOGI chkparm OK */
e8b62011
JS		 1049 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1050 "0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
1051 ndlp->nlp_DID, ndlp->nlp_state,
1052 ndlp->nlp_flag, ndlp->nlp_rpi);
3de2a653 1053 if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
dea3101e 1054 ndlp->nlp_fcp_info |= CLASS2;
2e0fef85 1055 else
dea3101e 1056 ndlp->nlp_fcp_info |= CLASS3;
2e0fef85 1057
dea3101e 1058 ndlp->nlp_class_sup = 0;
1059 if (sp->cls1.classValid)
1060 ndlp->nlp_class_sup |= FC_COS_CLASS1;
1061 if (sp->cls2.classValid)
1062 ndlp->nlp_class_sup |= FC_COS_CLASS2;
1063 if (sp->cls3.classValid)
1064 ndlp->nlp_class_sup |= FC_COS_CLASS3;
1065 if (sp->cls4.classValid)
1066 ndlp->nlp_class_sup |= FC_COS_CLASS4;
1067 ndlp->nlp_maxframe =
2e0fef85 1068 ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
dea3101e 1069
2e0fef85 1070 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
92d7f7b0 1071 if (!mbox) {
e8b62011
JS		 1072 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1073 "0133 PLOGI: no memory for reg_login "
92d7f7b0 1074 "Data: x%x x%x x%x x%x\n",
92d7f7b0
JS		 1075 ndlp->nlp_DID, ndlp->nlp_state,
1076 ndlp->nlp_flag, ndlp->nlp_rpi);
dea3101e 1077 goto out;
92d7f7b0 1078 }
dea3101e 1079
2e0fef85
JS		 1080 lpfc_unreg_rpi(vport, ndlp);
1081
6fb120a7 1082 if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
4042629e 1083 (uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
2fe165b6 1084 switch (ndlp->nlp_DID) {
dea3101e 1085 case NameServer_DID:
de0c5b32 1086 mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
dea3101e 1087 break;
1088 case FDMI_DID:
de0c5b32 1089 mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
dea3101e 1090 break;
1091 default:
ffc95493 1092 ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
de0c5b32 1093 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
dea3101e 1094 }
329f9bc7 1095 mbox->context2 = lpfc_nlp_get(ndlp);
2e0fef85 1096 mbox->vport = vport;
0b727fea 1097 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
dea3101e 1098 != MBX_NOT_FINISHED) {
2e0fef85
JS		 1099 lpfc_nlp_set_state(vport, ndlp,
1100 NLP_STE_REG_LOGIN_ISSUE);
c9f8735b 1101 return ndlp->nlp_state;
dea3101e 1102 }
ffc95493
JS		 1103 if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
1104 ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
fa4066b6
JS		 1105 /* decrement node reference count to the failed mbox
1106 * command
1107 */
329f9bc7 1108 lpfc_nlp_put(ndlp);
92d7f7b0 1109 mp = (struct lpfc_dmabuf *) mbox->context1;
14691150
JS		 1110 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1111 kfree(mp);
dea3101e 1112 mempool_free(mbox, phba->mbox_mem_pool);
92d7f7b0 1113
e8b62011
JS		 1114 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1115 "0134 PLOGI: cannot issue reg_login "
1116 "Data: x%x x%x x%x x%x\n",
1117 ndlp->nlp_DID, ndlp->nlp_state,
1118 ndlp->nlp_flag, ndlp->nlp_rpi);
dea3101e 1119 } else {
1120 mempool_free(mbox, phba->mbox_mem_pool);
92d7f7b0 1121
e8b62011
JS		 1122 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1123 "0135 PLOGI: cannot format reg_login "
1124 "Data: x%x x%x x%x x%x\n",
1125 ndlp->nlp_DID, ndlp->nlp_state,
1126 ndlp->nlp_flag, ndlp->nlp_rpi);
dea3101e 1127 }
1128
1129
92d7f7b0
JS		 1130out:
1131 if (ndlp->nlp_DID == NameServer_DID) {
1132 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
e8b62011
JS		 1133 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1134 "0261 Cannot Register NameServer login\n");
92d7f7b0
JS		 1135 }
1136
8b455cf3
JS		 1137 /*
1138 ** In case the node reference counter does not go to zero, ensure that
1139 ** the stale state for the node is not processed.
1140 */
1141
1142 ndlp->nlp_prev_state = ndlp->nlp_state;
1143 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
0ff10d46 1144 spin_lock_irq(shost->host_lock);
a8adb832 1145 ndlp->nlp_flag |= NLP_DEFER_RM;
0ff10d46 1146 spin_unlock_irq(shost->host_lock);
c9f8735b 1147 return NLP_STE_FREED_NODE;
dea3101e 1148}
1149
0ff10d46
JS		 1150static uint32_t
1151lpfc_cmpl_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1152 void *arg, uint32_t evt)
1153{
1154 return ndlp->nlp_state;
1155}
1156
1157static uint32_t
1158lpfc_cmpl_reglogin_plogi_issue(struct lpfc_vport *vport,
1159 struct lpfc_nodelist *ndlp, void *arg, uint32_t evt)
1160{
78730cfe
JS		 1161 struct lpfc_hba *phba;
1162 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
1163 MAILBOX_t *mb = &pmb->u.mb;
1164 uint16_t rpi;
1165
1166 phba = vport->phba;
1167 /* Release the RPI */
1168 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1169 !mb->mbxStatus) {
1170 rpi = pmb->u.mb.un.varWords[0];
1171 lpfc_release_rpi(phba, vport, rpi);
1172 }
0ff10d46
JS		 1173 return ndlp->nlp_state;
1174}
1175
dea3101e 1176static uint32_t
2e0fef85
JS		 1177lpfc_device_rm_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1178 void *arg, uint32_t evt)
dea3101e 1179{
2e0fef85
JS		 1180 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1181
1182 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1183 spin_lock_irq(shost->host_lock);
a0f9b48d 1184 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2e0fef85 1185 spin_unlock_irq(shost->host_lock);
a0f9b48d 1186 return ndlp->nlp_state;
2e0fef85 1187 } else {
a0f9b48d 1188 /* software abort outstanding PLOGI */
2e0fef85 1189 lpfc_els_abort(vport->phba, ndlp);
dea3101e 1190
2e0fef85 1191 lpfc_drop_node(vport, ndlp);
a0f9b48d
JS		 1192 return NLP_STE_FREED_NODE;
1193 }
dea3101e 1194}
1195
1196static uint32_t
2e0fef85
JS		 1197lpfc_device_recov_plogi_issue(struct lpfc_vport *vport,
1198 struct lpfc_nodelist *ndlp,
1199 void *arg,
1200 uint32_t evt)
dea3101e 1201{
2e0fef85
JS		 1202 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1203 struct lpfc_hba *phba = vport->phba;
1204
92d7f7b0
JS		 1205 /* Don't do anything that will mess up processing of the
1206 * previous RSCN.
1207 */
1208 if (vport->fc_flag & FC_RSCN_DEFERRED)
1209 return ndlp->nlp_state;
1210
dea3101e 1211 /* software abort outstanding PLOGI */
07951076 1212 lpfc_els_abort(phba, ndlp);
dea3101e 1213
5024ab17 1214 ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
2e0fef85 1215 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
92d7f7b0 1216 spin_lock_irq(shost->host_lock);
a0f9b48d 1217 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2e0fef85 1218 spin_unlock_irq(shost->host_lock);
dea3101e 1219
c9f8735b 1220 return ndlp->nlp_state;
dea3101e 1221}
1222
1223static uint32_t
2e0fef85
JS		 1224lpfc_rcv_plogi_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1225 void *arg, uint32_t evt)
dea3101e 1226{
0d2b6b83 1227 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2e0fef85 1228 struct lpfc_hba *phba = vport->phba;
dea3101e 1229 struct lpfc_iocbq *cmdiocb;
1230
1231 /* software abort outstanding ADISC */
07951076 1232 lpfc_els_abort(phba, ndlp);
dea3101e 1233
1234 cmdiocb = (struct lpfc_iocbq *) arg;
1235
0d2b6b83
JS		 1236 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
1237 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1238 spin_lock_irq(shost->host_lock);
1239 ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
1240 spin_unlock_irq(shost->host_lock);
90160e01 1241 if (vport->num_disc_nodes)
0d2b6b83 1242 lpfc_more_adisc(vport);
0d2b6b83
JS		 1243 }
1244 return ndlp->nlp_state;
1245 }
5024ab17 1246 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
2e0fef85
JS		 1247 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
1248 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
dea3101e 1249
c9f8735b 1250 return ndlp->nlp_state;
dea3101e 1251}
1252
1253static uint32_t
2e0fef85
JS		 1254lpfc_rcv_prli_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1255 void *arg, uint32_t evt)
dea3101e 1256{
2e0fef85 1257 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1258
2e0fef85 1259 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
c9f8735b 1260 return ndlp->nlp_state;
dea3101e 1261}
1262
1263static uint32_t
2e0fef85
JS		 1264lpfc_rcv_logo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1265 void *arg, uint32_t evt)
dea3101e 1266{
2e0fef85 1267 struct lpfc_hba *phba = vport->phba;
dea3101e 1268 struct lpfc_iocbq *cmdiocb;
1269
1270 cmdiocb = (struct lpfc_iocbq *) arg;
1271
1272 /* software abort outstanding ADISC */
07951076 1273 lpfc_els_abort(phba, ndlp);
dea3101e 1274
2e0fef85 1275 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 1276 return ndlp->nlp_state;
dea3101e 1277}
1278
1279static uint32_t
2e0fef85
JS		 1280lpfc_rcv_padisc_adisc_issue(struct lpfc_vport *vport,
1281 struct lpfc_nodelist *ndlp,
1282 void *arg, uint32_t evt)
dea3101e 1283{
1284 struct lpfc_iocbq *cmdiocb;
1285
1286 cmdiocb = (struct lpfc_iocbq *) arg;
1287
2e0fef85 1288 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
c9f8735b 1289 return ndlp->nlp_state;
dea3101e 1290}
1291
1292static uint32_t
2e0fef85
JS		 1293lpfc_rcv_prlo_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1294 void *arg, uint32_t evt)
dea3101e 1295{
1296 struct lpfc_iocbq *cmdiocb;
1297
1298 cmdiocb = (struct lpfc_iocbq *) arg;
1299
1300 /* Treat like rcv logo */
2e0fef85 1301 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
c9f8735b 1302 return ndlp->nlp_state;
dea3101e 1303}
1304
1305static uint32_t
2e0fef85
JS		 1306lpfc_cmpl_adisc_adisc_issue(struct lpfc_vport *vport,
1307 struct lpfc_nodelist *ndlp,
1308 void *arg, uint32_t evt)
dea3101e 1309{
2e0fef85
JS		 1310 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1311 struct lpfc_hba *phba = vport->phba;
dea3101e 1312 struct lpfc_iocbq *cmdiocb, *rspiocb;
1313 IOCB_t *irsp;
1314 ADISC *ap;
6fb120a7 1315 int rc;
dea3101e 1316
1317 cmdiocb = (struct lpfc_iocbq *) arg;
1318 rspiocb = cmdiocb->context_un.rsp_iocb;
1319
1320 ap = (ADISC *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1321 irsp = &rspiocb->iocb;
1322
1323 if ((irsp->ulpStatus) ||
92d7f7b0 1324 (!lpfc_check_adisc(vport, ndlp, &ap->nodeName, &ap->portName))) {
dea3101e 1325 /* 1 sec timeout */
256ec0d0
JS		 1326 mod_timer(&ndlp->nlp_delayfunc,
1327 jiffies + msecs_to_jiffies(1000));
2e0fef85 1328 spin_lock_irq(shost->host_lock);
dea3101e 1329 ndlp->nlp_flag |= NLP_DELAY_TMO;
2e0fef85 1330 spin_unlock_irq(shost->host_lock);
5024ab17 1331 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
dea3101e 1332
2e0fef85
JS		 1333 memset(&ndlp->nlp_nodename, 0, sizeof(struct lpfc_name));
1334 memset(&ndlp->nlp_portname, 0, sizeof(struct lpfc_name));
dea3101e 1335
5024ab17 1336 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
2e0fef85
JS		 1337 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1338 lpfc_unreg_rpi(vport, ndlp);
c9f8735b 1339 return ndlp->nlp_state;
dea3101e 1340 }
5024ab17 1341
6fb120a7 1342 if (phba->sli_rev == LPFC_SLI_REV4) {
6b5151fd 1343 rc = lpfc_sli4_resume_rpi(ndlp, NULL, NULL);
6fb120a7
JS		 1344 if (rc) {
1345 /* Stay in state and retry. */
1346 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
1347 return ndlp->nlp_state;
1348 }
1349 }
1350
2501322e 1351 if (ndlp->nlp_type & NLP_FCP_TARGET) {
5024ab17 1352 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
2e0fef85 1353 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
2501322e 1354 } else {
5024ab17 1355 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
2e0fef85 1356 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
2501322e 1357 }
6fb120a7 1358
c9f8735b 1359 return ndlp->nlp_state;
dea3101e 1360}
1361
1362static uint32_t
2e0fef85
JS		 1363lpfc_device_rm_adisc_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1364 void *arg, uint32_t evt)
dea3101e 1365{
2e0fef85
JS		 1366 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1367
1368 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1369 spin_lock_irq(shost->host_lock);
a0f9b48d 1370 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2e0fef85 1371 spin_unlock_irq(shost->host_lock);
a0f9b48d 1372 return ndlp->nlp_state;
2e0fef85 1373 } else {
a0f9b48d 1374 /* software abort outstanding ADISC */
2e0fef85 1375 lpfc_els_abort(vport->phba, ndlp);
dea3101e 1376
2e0fef85 1377 lpfc_drop_node(vport, ndlp);
a0f9b48d
JS		 1378 return NLP_STE_FREED_NODE;
1379 }
dea3101e 1380}
1381
1382static uint32_t
2e0fef85
JS		 1383lpfc_device_recov_adisc_issue(struct lpfc_vport *vport,
1384 struct lpfc_nodelist *ndlp,
1385 void *arg,
1386 uint32_t evt)
dea3101e 1387{
2e0fef85
JS		 1388 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1389 struct lpfc_hba *phba = vport->phba;
1390
92d7f7b0
JS		 1391 /* Don't do anything that will mess up processing of the
1392 * previous RSCN.
1393 */
1394 if (vport->fc_flag & FC_RSCN_DEFERRED)
1395 return ndlp->nlp_state;
1396
dea3101e 1397 /* software abort outstanding ADISC */
07951076 1398 lpfc_els_abort(phba, ndlp);
dea3101e 1399
5024ab17 1400 ndlp->nlp_prev_state = NLP_STE_ADISC_ISSUE;
2e0fef85
JS		 1401 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1402 spin_lock_irq(shost->host_lock);
a0f9b48d 1403 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2e0fef85 1404 spin_unlock_irq(shost->host_lock);
92d7f7b0 1405 lpfc_disc_set_adisc(vport, ndlp);
c9f8735b 1406 return ndlp->nlp_state;
dea3101e 1407}
1408
1409static uint32_t
2e0fef85
JS		 1410lpfc_rcv_plogi_reglogin_issue(struct lpfc_vport *vport,
1411 struct lpfc_nodelist *ndlp,
1412 void *arg,
dea3101e 1413 uint32_t evt)
1414{
2e0fef85 1415 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1416
2e0fef85 1417 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
c9f8735b 1418 return ndlp->nlp_state;
dea3101e 1419}
1420
1421static uint32_t
2e0fef85
JS		 1422lpfc_rcv_prli_reglogin_issue(struct lpfc_vport *vport,
1423 struct lpfc_nodelist *ndlp,
1424 void *arg,
dea3101e 1425 uint32_t evt)
1426{
2e0fef85 1427 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1428
2e0fef85 1429 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
c9f8735b 1430 return ndlp->nlp_state;
dea3101e 1431}
1432
1433static uint32_t
2e0fef85
JS		 1434lpfc_rcv_logo_reglogin_issue(struct lpfc_vport *vport,
1435 struct lpfc_nodelist *ndlp,
1436 void *arg,
dea3101e 1437 uint32_t evt)
1438{
2e0fef85
JS		 1439 struct lpfc_hba *phba = vport->phba;
1440 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
7054a606
JS		 1441 LPFC_MBOXQ_t *mb;
1442 LPFC_MBOXQ_t *nextmb;
1443 struct lpfc_dmabuf *mp;
dea3101e 1444
1445 cmdiocb = (struct lpfc_iocbq *) arg;
1446
7054a606
JS		 1447 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */
1448 if ((mb = phba->sli.mbox_active)) {
04c68496 1449 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
7054a606 1450 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
92d7f7b0 1451 lpfc_nlp_put(ndlp);
7054a606
JS		 1452 mb->context2 = NULL;
1453 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1454 }
1455 }
1456
2e0fef85 1457 spin_lock_irq(&phba->hbalock);
7054a606 1458 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) {
04c68496 1459 if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) &&
7054a606
JS		 1460 (ndlp == (struct lpfc_nodelist *) mb->context2)) {
1461 mp = (struct lpfc_dmabuf *) (mb->context1);
1462 if (mp) {
98c9ea5c 1463 __lpfc_mbuf_free(phba, mp->virt, mp->phys);
7054a606
JS		 1464 kfree(mp);
1465 }
92d7f7b0 1466 lpfc_nlp_put(ndlp);
7054a606 1467 list_del(&mb->list);
5ffc266e 1468 phba->sli.mboxq_cnt--;
7054a606
JS		 1469 mempool_free(mb, phba->mbox_mem_pool);
1470 }
1471 }
2e0fef85 1472 spin_unlock_irq(&phba->hbalock);
7054a606 1473
2e0fef85 1474 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 1475 return ndlp->nlp_state;
dea3101e 1476}
1477
1478static uint32_t
2e0fef85
JS		 1479lpfc_rcv_padisc_reglogin_issue(struct lpfc_vport *vport,
1480 struct lpfc_nodelist *ndlp,
1481 void *arg,
dea3101e 1482 uint32_t evt)
1483{
2e0fef85 1484 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1485
2e0fef85 1486 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
c9f8735b 1487 return ndlp->nlp_state;
dea3101e 1488}
1489
1490static uint32_t
2e0fef85
JS		 1491lpfc_rcv_prlo_reglogin_issue(struct lpfc_vport *vport,
1492 struct lpfc_nodelist *ndlp,
1493 void *arg,
dea3101e 1494 uint32_t evt)
1495{
1496 struct lpfc_iocbq *cmdiocb;
1497
1498 cmdiocb = (struct lpfc_iocbq *) arg;
51ef4c26 1499 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
c9f8735b 1500 return ndlp->nlp_state;
dea3101e 1501}
1502
1503static uint32_t
2e0fef85
JS		 1504lpfc_cmpl_reglogin_reglogin_issue(struct lpfc_vport *vport,
1505 struct lpfc_nodelist *ndlp,
1506 void *arg,
1507 uint32_t evt)
dea3101e 1508{
2e0fef85 1509 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2e0fef85 1510 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
04c68496 1511 MAILBOX_t *mb = &pmb->u.mb;
2e0fef85 1512 uint32_t did = mb->un.varWords[1];
dea3101e 1513
dea3101e 1514 if (mb->mbxStatus) {
1515 /* RegLogin failed */
e8b62011 1516 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
6d368e53
JS		 1517 "0246 RegLogin failed Data: x%x x%x x%x x%x "
1518 "x%x\n",
1519 did, mb->mbxStatus, vport->port_state,
1520 mb->un.varRegLogin.vpi,
1521 mb->un.varRegLogin.rpi);
d0e56dad
JS		 1522 /*
1523 * If RegLogin failed due to lack of HBA resources do not
1524 * retry discovery.
1525 */
1526 if (mb->mbxStatus == MBXERR_RPI_FULL) {
87af33fe
JS		 1527 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
1528 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
d0e56dad
JS		 1529 return ndlp->nlp_state;
1530 }
1531
2e0fef85 1532 /* Put ndlp in npr state set plogi timer for 1 sec */
256ec0d0
JS		 1533 mod_timer(&ndlp->nlp_delayfunc,
1534 jiffies + msecs_to_jiffies(1000 * 1));
2e0fef85 1535 spin_lock_irq(shost->host_lock);
dea3101e 1536 ndlp->nlp_flag |= NLP_DELAY_TMO;
2e0fef85 1537 spin_unlock_irq(shost->host_lock);
5024ab17 1538 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
dea3101e 1539
2e0fef85 1540 lpfc_issue_els_logo(vport, ndlp, 0);
5024ab17 1541 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2e0fef85 1542 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
c9f8735b 1543 return ndlp->nlp_state;
dea3101e 1544 }
1545
6d368e53
JS		 1546 /* SLI4 ports have preallocated logical rpis. */
1547 if (vport->phba->sli_rev < LPFC_SLI_REV4)
1548 ndlp->nlp_rpi = mb->un.varWords[0];
1549
4042629e 1550 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
dea3101e 1551
1552 /* Only if we are not a fabric nport do we issue PRLI */
1553 if (!(ndlp->nlp_type & NLP_FABRIC)) {
5024ab17 1554 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2e0fef85
JS		 1555 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
1556 lpfc_issue_els_prli(vport, ndlp, 0);
dea3101e 1557 } else {
5024ab17 1558 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2e0fef85 1559 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
dea3101e 1560 }
c9f8735b 1561 return ndlp->nlp_state;
dea3101e 1562}
1563
1564static uint32_t
2e0fef85
JS		 1565lpfc_device_rm_reglogin_issue(struct lpfc_vport *vport,
1566 struct lpfc_nodelist *ndlp,
1567 void *arg,
dea3101e 1568 uint32_t evt)
1569{
2e0fef85
JS		 1570 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1571
1572 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1573 spin_lock_irq(shost->host_lock);
a0f9b48d 1574 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2e0fef85 1575 spin_unlock_irq(shost->host_lock);
a0f9b48d 1576 return ndlp->nlp_state;
2e0fef85
JS		 1577 } else {
1578 lpfc_drop_node(vport, ndlp);
a0f9b48d
JS		 1579 return NLP_STE_FREED_NODE;
1580 }
dea3101e 1581}
1582
1583static uint32_t
2e0fef85
JS		 1584lpfc_device_recov_reglogin_issue(struct lpfc_vport *vport,
1585 struct lpfc_nodelist *ndlp,
1586 void *arg,
1587 uint32_t evt)
dea3101e 1588{
2e0fef85
JS		 1589 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1590
92d7f7b0
JS		 1591 /* Don't do anything that will mess up processing of the
1592 * previous RSCN.
1593 */
1594 if (vport->fc_flag & FC_RSCN_DEFERRED)
1595 return ndlp->nlp_state;
1596
5024ab17 1597 ndlp->nlp_prev_state = NLP_STE_REG_LOGIN_ISSUE;
2e0fef85
JS		 1598 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1599 spin_lock_irq(shost->host_lock);
ffc95493 1600 ndlp->nlp_flag |= NLP_IGNR_REG_CMPL;
a0f9b48d 1601 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2e0fef85 1602 spin_unlock_irq(shost->host_lock);
92d7f7b0 1603 lpfc_disc_set_adisc(vport, ndlp);
c9f8735b 1604 return ndlp->nlp_state;
dea3101e 1605}
1606
1607static uint32_t
2e0fef85
JS		 1608lpfc_rcv_plogi_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1609 void *arg, uint32_t evt)
dea3101e 1610{
1611 struct lpfc_iocbq *cmdiocb;
1612
1613 cmdiocb = (struct lpfc_iocbq *) arg;
1614
2e0fef85 1615 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
c9f8735b 1616 return ndlp->nlp_state;
dea3101e 1617}
1618
1619static uint32_t
2e0fef85
JS		 1620lpfc_rcv_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1621 void *arg, uint32_t evt)
dea3101e 1622{
2e0fef85 1623 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1624
2e0fef85 1625 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
c9f8735b 1626 return ndlp->nlp_state;
dea3101e 1627}
1628
1629static uint32_t
2e0fef85
JS		 1630lpfc_rcv_logo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1631 void *arg, uint32_t evt)
dea3101e 1632{
2e0fef85 1633 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1634
1635 /* Software abort outstanding PRLI before sending acc */
2e0fef85 1636 lpfc_els_abort(vport->phba, ndlp);
dea3101e 1637
2e0fef85 1638 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 1639 return ndlp->nlp_state;
dea3101e 1640}
1641
1642static uint32_t
2e0fef85
JS		 1643lpfc_rcv_padisc_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1644 void *arg, uint32_t evt)
dea3101e 1645{
2e0fef85 1646 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1647
2e0fef85 1648 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
c9f8735b 1649 return ndlp->nlp_state;
dea3101e 1650}
1651
1652/* This routine is envoked when we rcv a PRLO request from a nport
1653 * we are logged into. We should send back a PRLO rsp setting the
1654 * appropriate bits.
1655 * NEXT STATE = PRLI_ISSUE
1656 */
1657static uint32_t
2e0fef85
JS		 1658lpfc_rcv_prlo_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1659 void *arg, uint32_t evt)
dea3101e 1660{
2e0fef85 1661 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1662
51ef4c26 1663 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
c9f8735b 1664 return ndlp->nlp_state;
dea3101e 1665}
1666
1667static uint32_t
2e0fef85
JS		 1668lpfc_cmpl_prli_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1669 void *arg, uint32_t evt)
dea3101e 1670{
92d7f7b0 1671 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
dea3101e 1672 struct lpfc_iocbq *cmdiocb, *rspiocb;
2e0fef85 1673 struct lpfc_hba *phba = vport->phba;
dea3101e 1674 IOCB_t *irsp;
1675 PRLI *npr;
1676
1677 cmdiocb = (struct lpfc_iocbq *) arg;
1678 rspiocb = cmdiocb->context_un.rsp_iocb;
1679 npr = (PRLI *)lpfc_check_elscmpl_iocb(phba, cmdiocb, rspiocb);
1680
1681 irsp = &rspiocb->iocb;
1682 if (irsp->ulpStatus) {
858c9f6c 1683 if ((vport->port_type == LPFC_NPIV_PORT) &&
3de2a653 1684 vport->cfg_restrict_login) {
858c9f6c
JS		 1685 goto out;
1686 }
5024ab17 1687 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2e0fef85 1688 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
c9f8735b 1689 return ndlp->nlp_state;
dea3101e 1690 }
1691
1692 /* Check out PRLI rsp */
1693 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
1694 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
3cb01c57 1695 ndlp->nlp_flag &= ~NLP_FIRSTBURST;
dea3101e 1696 if ((npr->acceptRspCode == PRLI_REQ_EXECUTED) &&
1697 (npr->prliType == PRLI_FCP_TYPE)) {
1698 if (npr->initiatorFunc)
1699 ndlp->nlp_type |= NLP_FCP_INITIATOR;
3cb01c57 1700 if (npr->targetFunc) {
dea3101e 1701 ndlp->nlp_type |= NLP_FCP_TARGET;
3cb01c57
JS		 1702 if (npr->writeXferRdyDis)
1703 ndlp->nlp_flag |= NLP_FIRSTBURST;
1704 }
dea3101e 1705 if (npr->Retry)
1706 ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
1707 }
92d7f7b0
JS		 1708 if (!(ndlp->nlp_type & NLP_FCP_TARGET) &&
1709 (vport->port_type == LPFC_NPIV_PORT) &&
3de2a653 1710 vport->cfg_restrict_login) {
858c9f6c 1711out:
92d7f7b0
JS		 1712 spin_lock_irq(shost->host_lock);
1713 ndlp->nlp_flag |= NLP_TARGET_REMOVE;
1714 spin_unlock_irq(shost->host_lock);
1715 lpfc_issue_els_logo(vport, ndlp, 0);
1716
1717 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
87af33fe 1718 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
92d7f7b0
JS		 1719 return ndlp->nlp_state;
1720 }
dea3101e 1721
5024ab17 1722 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
92d7f7b0
JS		 1723 if (ndlp->nlp_type & NLP_FCP_TARGET)
1724 lpfc_nlp_set_state(vport, ndlp, NLP_STE_MAPPED_NODE);
1725 else
1726 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
c9f8735b 1727 return ndlp->nlp_state;
dea3101e 1728}
1729
1730/*! lpfc_device_rm_prli_issue
92d7f7b0
JS		 1731 *
1732 * \pre
1733 * \post
1734 * \param phba
1735 * \param ndlp
1736 * \param arg
1737 * \param evt
1738 * \return uint32_t
1739 *
1740 * \b Description:
1741 * This routine is envoked when we a request to remove a nport we are in the
1742 * process of PRLIing. We should software abort outstanding prli, unreg
1743 * login, send a logout. We will change node state to UNUSED_NODE, put it
1744 * on plogi list so it can be freed when LOGO completes.
1745 *
1746 */
1747
dea3101e 1748static uint32_t
2e0fef85
JS		 1749lpfc_device_rm_prli_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1750 void *arg, uint32_t evt)
dea3101e 1751{
2e0fef85
JS		 1752 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1753
1754 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
1755 spin_lock_irq(shost->host_lock);
a0f9b48d 1756 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2e0fef85 1757 spin_unlock_irq(shost->host_lock);
a0f9b48d 1758 return ndlp->nlp_state;
2e0fef85 1759 } else {
a0f9b48d 1760 /* software abort outstanding PLOGI */
2e0fef85 1761 lpfc_els_abort(vport->phba, ndlp);
dea3101e 1762
2e0fef85 1763 lpfc_drop_node(vport, ndlp);
a0f9b48d
JS		 1764 return NLP_STE_FREED_NODE;
1765 }
dea3101e 1766}
1767
1768
1769/*! lpfc_device_recov_prli_issue
92d7f7b0
JS		 1770 *
1771 * \pre
1772 * \post
1773 * \param phba
1774 * \param ndlp
1775 * \param arg
1776 * \param evt
1777 * \return uint32_t
1778 *
1779 * \b Description:
1780 * The routine is envoked when the state of a device is unknown, like
1781 * during a link down. We should remove the nodelist entry from the
1782 * unmapped list, issue a UNREG_LOGIN, do a software abort of the
1783 * outstanding PRLI command, then free the node entry.
1784 */
dea3101e 1785static uint32_t
2e0fef85
JS		 1786lpfc_device_recov_prli_issue(struct lpfc_vport *vport,
1787 struct lpfc_nodelist *ndlp,
1788 void *arg,
1789 uint32_t evt)
dea3101e 1790{
2e0fef85
JS		 1791 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1792 struct lpfc_hba *phba = vport->phba;
1793
92d7f7b0
JS		 1794 /* Don't do anything that will mess up processing of the
1795 * previous RSCN.
1796 */
1797 if (vport->fc_flag & FC_RSCN_DEFERRED)
1798 return ndlp->nlp_state;
1799
dea3101e 1800 /* software abort outstanding PRLI */
07951076 1801 lpfc_els_abort(phba, ndlp);
dea3101e 1802
5024ab17 1803 ndlp->nlp_prev_state = NLP_STE_PRLI_ISSUE;
2e0fef85
JS		 1804 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1805 spin_lock_irq(shost->host_lock);
a0f9b48d 1806 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2e0fef85 1807 spin_unlock_irq(shost->host_lock);
92d7f7b0 1808 lpfc_disc_set_adisc(vport, ndlp);
c9f8735b 1809 return ndlp->nlp_state;
dea3101e 1810}
1811
086a345f
JS		 1812static uint32_t
1813lpfc_rcv_plogi_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1814 void *arg, uint32_t evt)
1815{
1816 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1817 struct ls_rjt stat;
1818
1819 memset(&stat, 0, sizeof(struct ls_rjt));
1820 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1821 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1822 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1823 return ndlp->nlp_state;
1824}
1825
1826static uint32_t
1827lpfc_rcv_prli_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1828 void *arg, uint32_t evt)
1829{
1830 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1831 struct ls_rjt stat;
1832
1833 memset(&stat, 0, sizeof(struct ls_rjt));
1834 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1835 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1836 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1837 return ndlp->nlp_state;
1838}
1839
1840static uint32_t
1841lpfc_rcv_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1842 void *arg, uint32_t evt)
1843{
1844 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1845 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1846
1847 spin_lock_irq(shost->host_lock);
1848 ndlp->nlp_flag &= NLP_LOGO_ACC;
1849 spin_unlock_irq(shost->host_lock);
1850 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
1851 return ndlp->nlp_state;
1852}
1853
1854static uint32_t
1855lpfc_rcv_padisc_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1856 void *arg, uint32_t evt)
1857{
1858 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1859 struct ls_rjt stat;
1860
1861 memset(&stat, 0, sizeof(struct ls_rjt));
1862 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1863 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1864 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1865 return ndlp->nlp_state;
1866}
1867
1868static uint32_t
1869lpfc_rcv_prlo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1870 void *arg, uint32_t evt)
1871{
1872 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *)arg;
1873 struct ls_rjt stat;
1874
1875 memset(&stat, 0, sizeof(struct ls_rjt));
1876 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
1877 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
1878 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
1879 return ndlp->nlp_state;
1880}
1881
1882static uint32_t
1883lpfc_cmpl_logo_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1884 void *arg, uint32_t evt)
1885{
1886 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1887
1888 ndlp->nlp_prev_state = NLP_STE_LOGO_ISSUE;
1889 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1890 spin_lock_irq(shost->host_lock);
1891 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
1892 spin_unlock_irq(shost->host_lock);
1893 lpfc_disc_set_adisc(vport, ndlp);
1894 return ndlp->nlp_state;
1895}
1896
1897static uint32_t
1898lpfc_device_rm_logo_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1899 void *arg, uint32_t evt)
1900{
1901 /*
1902 * Take no action. If a LOGO is outstanding, then possibly DevLoss has
1903 * timed out and is calling for Device Remove. In this case, the LOGO
1904 * must be allowed to complete in state LOGO_ISSUE so that the rpi
1905 * and other NLP flags are correctly cleaned up.
1906 */
1907 return ndlp->nlp_state;
1908}
1909
1910static uint32_t
1911lpfc_device_recov_logo_issue(struct lpfc_vport *vport,
1912 struct lpfc_nodelist *ndlp,
1913 void *arg, uint32_t evt)
1914{
1915 /*
1916 * Device Recovery events have no meaning for a node with a LOGO
1917 * outstanding. The LOGO has to complete first and handle the
1918 * node from that point.
1919 */
1920 return ndlp->nlp_state;
1921}
1922
dea3101e 1923static uint32_t
2e0fef85
JS		 1924lpfc_rcv_plogi_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1925 void *arg, uint32_t evt)
dea3101e 1926{
2e0fef85 1927 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1928
2e0fef85 1929 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
c9f8735b 1930 return ndlp->nlp_state;
dea3101e 1931}
1932
1933static uint32_t
2e0fef85
JS		 1934lpfc_rcv_prli_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1935 void *arg, uint32_t evt)
dea3101e 1936{
2e0fef85 1937 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1938
2e0fef85
JS		 1939 lpfc_rcv_prli(vport, ndlp, cmdiocb);
1940 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
c9f8735b 1941 return ndlp->nlp_state;
dea3101e 1942}
1943
1944static uint32_t
2e0fef85
JS		 1945lpfc_rcv_logo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1946 void *arg, uint32_t evt)
dea3101e 1947{
2e0fef85 1948 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1949
2e0fef85 1950 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 1951 return ndlp->nlp_state;
dea3101e 1952}
1953
1954static uint32_t
2e0fef85
JS		 1955lpfc_rcv_padisc_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1956 void *arg, uint32_t evt)
dea3101e 1957{
2e0fef85 1958 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1959
2e0fef85 1960 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
c9f8735b 1961 return ndlp->nlp_state;
dea3101e 1962}
1963
1964static uint32_t
2e0fef85
JS		 1965lpfc_rcv_prlo_unmap_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1966 void *arg, uint32_t evt)
dea3101e 1967{
2e0fef85 1968 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1969
51ef4c26 1970 lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
c9f8735b 1971 return ndlp->nlp_state;
dea3101e 1972}
1973
1974static uint32_t
2e0fef85
JS		 1975lpfc_device_recov_unmap_node(struct lpfc_vport *vport,
1976 struct lpfc_nodelist *ndlp,
1977 void *arg,
1978 uint32_t evt)
dea3101e 1979{
2e0fef85
JS		 1980 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1981
5024ab17 1982 ndlp->nlp_prev_state = NLP_STE_UNMAPPED_NODE;
2e0fef85
JS		 1983 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1984 spin_lock_irq(shost->host_lock);
a0f9b48d 1985 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2e0fef85
JS		 1986 spin_unlock_irq(shost->host_lock);
1987 lpfc_disc_set_adisc(vport, ndlp);
dea3101e 1988
c9f8735b 1989 return ndlp->nlp_state;
dea3101e 1990}
1991
1992static uint32_t
2e0fef85
JS		 1993lpfc_rcv_plogi_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1994 void *arg, uint32_t evt)
dea3101e 1995{
2e0fef85 1996 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 1997
2e0fef85 1998 lpfc_rcv_plogi(vport, ndlp, cmdiocb);
c9f8735b 1999 return ndlp->nlp_state;
dea3101e 2000}
2001
2002static uint32_t
2e0fef85
JS		 2003lpfc_rcv_prli_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2004 void *arg, uint32_t evt)
dea3101e 2005{
2e0fef85 2006 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 2007
2e0fef85 2008 lpfc_els_rsp_prli_acc(vport, cmdiocb, ndlp);
c9f8735b 2009 return ndlp->nlp_state;
dea3101e 2010}
2011
2012static uint32_t
2e0fef85
JS		 2013lpfc_rcv_logo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2014 void *arg, uint32_t evt)
dea3101e 2015{
2e0fef85 2016 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 2017
2e0fef85 2018 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 2019 return ndlp->nlp_state;
dea3101e 2020}
2021
2022static uint32_t
2e0fef85
JS		 2023lpfc_rcv_padisc_mapped_node(struct lpfc_vport *vport,
2024 struct lpfc_nodelist *ndlp,
2025 void *arg, uint32_t evt)
dea3101e 2026{
2e0fef85 2027 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 2028
2e0fef85 2029 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
c9f8735b 2030 return ndlp->nlp_state;
dea3101e 2031}
2032
2033static uint32_t
2e0fef85
JS		 2034lpfc_rcv_prlo_mapped_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2035 void *arg, uint32_t evt)
dea3101e 2036{
2e0fef85
JS		 2037 struct lpfc_hba *phba = vport->phba;
2038 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 2039
2040 /* flush the target */
51ef4c26
JS		 2041 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
2042 ndlp->nlp_sid, 0, LPFC_CTX_TGT);
dea3101e 2043
2044 /* Treat like rcv logo */
2e0fef85 2045 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_PRLO);
c9f8735b 2046 return ndlp->nlp_state;
dea3101e 2047}
2048
2049static uint32_t
2e0fef85
JS		 2050lpfc_device_recov_mapped_node(struct lpfc_vport *vport,
2051 struct lpfc_nodelist *ndlp,
2052 void *arg,
2053 uint32_t evt)
dea3101e 2054{
2e0fef85
JS		 2055 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2056
5024ab17 2057 ndlp->nlp_prev_state = NLP_STE_MAPPED_NODE;
2e0fef85
JS		 2058 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2059 spin_lock_irq(shost->host_lock);
a0f9b48d 2060 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2e0fef85
JS		 2061 spin_unlock_irq(shost->host_lock);
2062 lpfc_disc_set_adisc(vport, ndlp);
c9f8735b 2063 return ndlp->nlp_state;
dea3101e 2064}
2065
2066static uint32_t
2e0fef85
JS		 2067lpfc_rcv_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2068 void *arg, uint32_t evt)
dea3101e 2069{
2e0fef85
JS		 2070 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2071 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 2072
2073 /* Ignore PLOGI if we have an outstanding LOGO */
0d2b6b83 2074 if (ndlp->nlp_flag & (NLP_LOGO_SND | NLP_LOGO_ACC))
c9f8735b 2075 return ndlp->nlp_state;
2e0fef85 2076 if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
0d2b6b83 2077 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2e0fef85 2078 spin_lock_irq(shost->host_lock);
0d2b6b83 2079 ndlp->nlp_flag &= ~(NLP_NPR_ADISC | NLP_NPR_2B_DISC);
2e0fef85 2080 spin_unlock_irq(shost->host_lock);
0d2b6b83
JS		 2081 } else if (!(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
2082 /* send PLOGI immediately, move to PLOGI issue state */
2083 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2084 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2085 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2086 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
2087 }
dea3101e 2088 }
c9f8735b 2089 return ndlp->nlp_state;
dea3101e 2090}
2091
2092static uint32_t
2e0fef85
JS		 2093lpfc_rcv_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2094 void *arg, uint32_t evt)
dea3101e 2095{
2e0fef85
JS		 2096 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2097 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
2098 struct ls_rjt stat;
dea3101e 2099
2100 memset(&stat, 0, sizeof (struct ls_rjt));
2101 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
2102 stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
858c9f6c 2103 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
dea3101e 2104
2105 if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
2106 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
2e0fef85 2107 spin_lock_irq(shost->host_lock);
c9f8735b 2108 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5024ab17 2109 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2e0fef85
JS		 2110 spin_unlock_irq(shost->host_lock);
2111 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2112 lpfc_issue_els_adisc(vport, ndlp, 0);
dea3101e 2113 } else {
5024ab17 2114 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2e0fef85
JS		 2115 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2116 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
dea3101e 2117 }
2118 }
c9f8735b 2119 return ndlp->nlp_state;
dea3101e 2120}
2121
2122static uint32_t
2e0fef85
JS		 2123lpfc_rcv_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2124 void *arg, uint32_t evt)
dea3101e 2125{
2e0fef85 2126 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 2127
2e0fef85 2128 lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
c9f8735b 2129 return ndlp->nlp_state;
dea3101e 2130}
2131
2132static uint32_t
2e0fef85
JS		 2133lpfc_rcv_padisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2134 void *arg, uint32_t evt)
dea3101e 2135{
2e0fef85 2136 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 2137
2e0fef85 2138 lpfc_rcv_padisc(vport, ndlp, cmdiocb);
33ccf8d1
JS		 2139 /*
2140 * Do not start discovery if discovery is about to start
2141 * or discovery in progress for this node. Starting discovery
2142 * here will affect the counting of discovery threads.
2143 */
2fb9bd8b 2144 if (!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
92d7f7b0 2145 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) {
dea3101e 2146 if (ndlp->nlp_flag & NLP_NPR_ADISC) {
92d7f7b0 2147 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
5024ab17 2148 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2e0fef85
JS		 2149 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2150 lpfc_issue_els_adisc(vport, ndlp, 0);
dea3101e 2151 } else {
5024ab17 2152 ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
2e0fef85
JS		 2153 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2154 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
dea3101e 2155 }
2156 }
c9f8735b 2157 return ndlp->nlp_state;
dea3101e 2158}
2159
2160static uint32_t
2e0fef85
JS		 2161lpfc_rcv_prlo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2162 void *arg, uint32_t evt)
dea3101e 2163{
2e0fef85
JS		 2164 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2165 struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
dea3101e 2166
2e0fef85 2167 spin_lock_irq(shost->host_lock);
c9f8735b 2168 ndlp->nlp_flag |= NLP_LOGO_ACC;
2e0fef85 2169 spin_unlock_irq(shost->host_lock);
c9f8735b 2170
51ef4c26 2171 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
dea3101e 2172
2e0fef85 2173 if ((ndlp->nlp_flag & NLP_DELAY_TMO) == 0) {
256ec0d0
JS		 2174 mod_timer(&ndlp->nlp_delayfunc,
2175 jiffies + msecs_to_jiffies(1000 * 1));
2e0fef85 2176 spin_lock_irq(shost->host_lock);
c9f8735b
JW		 2177 ndlp->nlp_flag |= NLP_DELAY_TMO;
2178 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2e0fef85 2179 spin_unlock_irq(shost->host_lock);
5024ab17 2180 ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
c9f8735b 2181 } else {
2e0fef85 2182 spin_lock_irq(shost->host_lock);
c9f8735b 2183 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2e0fef85 2184 spin_unlock_irq(shost->host_lock);
dea3101e 2185 }
c9f8735b
JW		 2186 return ndlp->nlp_state;
2187}
dea3101e 2188
c9f8735b 2189static uint32_t
2e0fef85
JS		 2190lpfc_cmpl_plogi_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2191 void *arg, uint32_t evt)
c9f8735b
JW		 2192{
2193 struct lpfc_iocbq *cmdiocb, *rspiocb;
a0f9b48d 2194 IOCB_t *irsp;
8b455cf3 2195 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
c9f8735b
JW		 2196
2197 cmdiocb = (struct lpfc_iocbq *) arg;
2198 rspiocb = cmdiocb->context_un.rsp_iocb;
a0f9b48d
JS		 2199
2200 irsp = &rspiocb->iocb;
2201 if (irsp->ulpStatus) {
8b455cf3 2202 spin_lock_irq(shost->host_lock);
a8adb832 2203 ndlp->nlp_flag |= NLP_DEFER_RM;
8b455cf3 2204 spin_unlock_irq(shost->host_lock);
a0f9b48d
JS		 2205 return NLP_STE_FREED_NODE;
2206 }
c9f8735b
JW		 2207 return ndlp->nlp_state;
2208}
2209
2210static uint32_t
2e0fef85
JS		 2211lpfc_cmpl_prli_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2212 void *arg, uint32_t evt)
c9f8735b
JW		 2213{
2214 struct lpfc_iocbq *cmdiocb, *rspiocb;
a0f9b48d 2215 IOCB_t *irsp;
c9f8735b
JW		 2216
2217 cmdiocb = (struct lpfc_iocbq *) arg;
2218 rspiocb = cmdiocb->context_un.rsp_iocb;
a0f9b48d
JS		 2219
2220 irsp = &rspiocb->iocb;
2221 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2e0fef85 2222 lpfc_drop_node(vport, ndlp);
a0f9b48d
JS		 2223 return NLP_STE_FREED_NODE;
2224 }
c9f8735b 2225 return ndlp->nlp_state;
dea3101e 2226}
2227
2228static uint32_t
2e0fef85
JS		 2229lpfc_cmpl_logo_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2230 void *arg, uint32_t evt)
dea3101e 2231{
d7c255b2 2232 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
086a345f
JS		 2233
2234 /* For the fabric port just clear the fc flags. */
d7c255b2
JS		 2235 if (ndlp->nlp_DID == Fabric_DID) {
2236 spin_lock_irq(shost->host_lock);
2237 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
2238 spin_unlock_irq(shost->host_lock);
2239 }
2e0fef85 2240 lpfc_unreg_rpi(vport, ndlp);
c9f8735b
JW		 2241 return ndlp->nlp_state;
2242}
2243
2244static uint32_t
2e0fef85
JS		 2245lpfc_cmpl_adisc_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2246 void *arg, uint32_t evt)
c9f8735b
JW		 2247{
2248 struct lpfc_iocbq *cmdiocb, *rspiocb;
a0f9b48d 2249 IOCB_t *irsp;
c9f8735b
JW		 2250
2251 cmdiocb = (struct lpfc_iocbq *) arg;
2252 rspiocb = cmdiocb->context_un.rsp_iocb;
a0f9b48d
JS		 2253
2254 irsp = &rspiocb->iocb;
2255 if (irsp->ulpStatus && (ndlp->nlp_flag & NLP_NODEV_REMOVE)) {
2e0fef85 2256 lpfc_drop_node(vport, ndlp);
a0f9b48d
JS		 2257 return NLP_STE_FREED_NODE;
2258 }
c9f8735b 2259 return ndlp->nlp_state;
dea3101e 2260}
2261
2262static uint32_t
2e0fef85
JS		 2263lpfc_cmpl_reglogin_npr_node(struct lpfc_vport *vport,
2264 struct lpfc_nodelist *ndlp,
2265 void *arg, uint32_t evt)
dea3101e 2266{
2e0fef85 2267 LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
04c68496 2268 MAILBOX_t *mb = &pmb->u.mb;
dea3101e 2269
04c68496 2270 if (!mb->mbxStatus) {
6d368e53
JS		 2271 /* SLI4 ports have preallocated logical rpis. */
2272 if (vport->phba->sli_rev < LPFC_SLI_REV4)
2273 ndlp->nlp_rpi = mb->un.varWords[0];
4042629e 2274 ndlp->nlp_flag |= NLP_RPI_REGISTERED;
04c68496 2275 } else {
a0f9b48d 2276 if (ndlp->nlp_flag & NLP_NODEV_REMOVE) {
2e0fef85 2277 lpfc_drop_node(vport, ndlp);
a0f9b48d
JS		 2278 return NLP_STE_FREED_NODE;
2279 }
2280 }
c9f8735b 2281 return ndlp->nlp_state;
dea3101e 2282}
2283
2284static uint32_t
2e0fef85
JS		 2285lpfc_device_rm_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2286 void *arg, uint32_t evt)
dea3101e 2287{
2e0fef85
JS		 2288 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2289
a0f9b48d 2290 if (ndlp->nlp_flag & NLP_NPR_2B_DISC) {
2e0fef85 2291 spin_lock_irq(shost->host_lock);
a0f9b48d 2292 ndlp->nlp_flag |= NLP_NODEV_REMOVE;
2e0fef85 2293 spin_unlock_irq(shost->host_lock);
a0f9b48d
JS		 2294 return ndlp->nlp_state;
2295 }
2e0fef85 2296 lpfc_drop_node(vport, ndlp);
c9f8735b 2297 return NLP_STE_FREED_NODE;
dea3101e 2298}
2299
2300static uint32_t
2e0fef85
JS		 2301lpfc_device_recov_npr_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2302 void *arg, uint32_t evt)
dea3101e 2303{
2e0fef85
JS		 2304 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2305
92d7f7b0
JS		 2306 /* Don't do anything that will mess up processing of the
2307 * previous RSCN.
2308 */
2309 if (vport->fc_flag & FC_RSCN_DEFERRED)
2310 return ndlp->nlp_state;
2311
eaf15d5b 2312 lpfc_cancel_retry_delay_tmo(vport, ndlp);
2e0fef85 2313 spin_lock_irq(shost->host_lock);
a0f9b48d 2314 ndlp->nlp_flag &= ~(NLP_NODEV_REMOVE | NLP_NPR_2B_DISC);
2e0fef85 2315 spin_unlock_irq(shost->host_lock);
c9f8735b 2316 return ndlp->nlp_state;
dea3101e 2317}
2318
2319
2320/* This next section defines the NPort Discovery State Machine */
2321
2322/* There are 4 different double linked lists nodelist entries can reside on.
2323 * The plogi list and adisc list are used when Link Up discovery or RSCN
2324 * processing is needed. Each list holds the nodes that we will send PLOGI
2325 * or ADISC on. These lists will keep track of what nodes will be effected
2326 * by an RSCN, or a Link Up (Typically, all nodes are effected on Link Up).
2327 * The unmapped_list will contain all nodes that we have successfully logged
2328 * into at the Fibre Channel level. The mapped_list will contain all nodes
2329 * that are mapped FCP targets.
2330 */
2331/*
2332 * The bind list is a list of undiscovered (potentially non-existent) nodes
2333 * that we have saved binding information on. This information is used when
2334 * nodes transition from the unmapped to the mapped list.
2335 */
2336/* For UNUSED_NODE state, the node has just been allocated .
2337 * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on
2338 * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list
2339 * and put on the unmapped list. For ADISC processing, the node is taken off
2340 * the ADISC list and placed on either the mapped or unmapped list (depending
2341 * on its previous state). Once on the unmapped list, a PRLI is issued and the
2342 * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is
2343 * changed to UNMAPPED_NODE. If the completion indicates a mapped
2344 * node, the node is taken off the unmapped list. The binding list is checked
2345 * for a valid binding, or a binding is automatically assigned. If binding
2346 * assignment is unsuccessful, the node is left on the unmapped list. If
2347 * binding assignment is successful, the associated binding list entry (if
2348 * any) is removed, and the node is placed on the mapped list.
2349 */
2350/*
2351 * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped
c01f3208 2352 * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers
dea3101e 2353 * expire, all effected nodes will receive a DEVICE_RM event.
2354 */
2355/*
2356 * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists
2357 * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap
2358 * check, additional nodes may be added or removed (via DEVICE_RM) to / from
2359 * the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated,
2360 * we will first process the ADISC list. 32 entries are processed initially and
2361 * ADISC is initited for each one. Completions / Events for each node are
2362 * funnelled thru the state machine. As each node finishes ADISC processing, it
2363 * starts ADISC for any nodes waiting for ADISC processing. If no nodes are
2364 * waiting, and the ADISC list count is identically 0, then we are done. For
2365 * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we
2366 * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI
2367 * list. 32 entries are processed initially and PLOGI is initited for each one.
2368 * Completions / Events for each node are funnelled thru the state machine. As
2369 * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting
2370 * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is
2371 * indentically 0, then we are done. We have now completed discovery / RSCN
2372 * handling. Upon completion, ALL nodes should be on either the mapped or
2373 * unmapped lists.
2374 */
2375
2376static uint32_t (*lpfc_disc_action[NLP_STE_MAX_STATE * NLP_EVT_MAX_EVENT])
2e0fef85 2377 (struct lpfc_vport *, struct lpfc_nodelist *, void *, uint32_t) = {
dea3101e 2378 /* Action routine Event Current State */
2379 lpfc_rcv_plogi_unused_node, /* RCV_PLOGI UNUSED_NODE */
2380 lpfc_rcv_els_unused_node, /* RCV_PRLI */
2381 lpfc_rcv_logo_unused_node, /* RCV_LOGO */
2382 lpfc_rcv_els_unused_node, /* RCV_ADISC */
2383 lpfc_rcv_els_unused_node, /* RCV_PDISC */
2384 lpfc_rcv_els_unused_node, /* RCV_PRLO */
2385 lpfc_disc_illegal, /* CMPL_PLOGI */
2386 lpfc_disc_illegal, /* CMPL_PRLI */
2387 lpfc_cmpl_logo_unused_node, /* CMPL_LOGO */
2388 lpfc_disc_illegal, /* CMPL_ADISC */
2389 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2390 lpfc_device_rm_unused_node, /* DEVICE_RM */
df9e1b59 2391 lpfc_device_recov_unused_node, /* DEVICE_RECOVERY */
dea3101e 2392
2393 lpfc_rcv_plogi_plogi_issue, /* RCV_PLOGI PLOGI_ISSUE */
92d7f7b0 2394 lpfc_rcv_prli_plogi_issue, /* RCV_PRLI */
c9f8735b 2395 lpfc_rcv_logo_plogi_issue, /* RCV_LOGO */
dea3101e 2396 lpfc_rcv_els_plogi_issue, /* RCV_ADISC */
2397 lpfc_rcv_els_plogi_issue, /* RCV_PDISC */
2398 lpfc_rcv_els_plogi_issue, /* RCV_PRLO */
2399 lpfc_cmpl_plogi_plogi_issue, /* CMPL_PLOGI */
2400 lpfc_disc_illegal, /* CMPL_PRLI */
0ff10d46 2401 lpfc_cmpl_logo_plogi_issue, /* CMPL_LOGO */
dea3101e 2402 lpfc_disc_illegal, /* CMPL_ADISC */
0ff10d46 2403 lpfc_cmpl_reglogin_plogi_issue,/* CMPL_REG_LOGIN */
dea3101e 2404 lpfc_device_rm_plogi_issue, /* DEVICE_RM */
2405 lpfc_device_recov_plogi_issue, /* DEVICE_RECOVERY */
2406
2407 lpfc_rcv_plogi_adisc_issue, /* RCV_PLOGI ADISC_ISSUE */
2408 lpfc_rcv_prli_adisc_issue, /* RCV_PRLI */
2409 lpfc_rcv_logo_adisc_issue, /* RCV_LOGO */
2410 lpfc_rcv_padisc_adisc_issue, /* RCV_ADISC */
2411 lpfc_rcv_padisc_adisc_issue, /* RCV_PDISC */
2412 lpfc_rcv_prlo_adisc_issue, /* RCV_PRLO */
2413 lpfc_disc_illegal, /* CMPL_PLOGI */
2414 lpfc_disc_illegal, /* CMPL_PRLI */
2415 lpfc_disc_illegal, /* CMPL_LOGO */
2416 lpfc_cmpl_adisc_adisc_issue, /* CMPL_ADISC */
2417 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2418 lpfc_device_rm_adisc_issue, /* DEVICE_RM */
2419 lpfc_device_recov_adisc_issue, /* DEVICE_RECOVERY */
2420
2421 lpfc_rcv_plogi_reglogin_issue, /* RCV_PLOGI REG_LOGIN_ISSUE */
2422 lpfc_rcv_prli_reglogin_issue, /* RCV_PLOGI */
2423 lpfc_rcv_logo_reglogin_issue, /* RCV_LOGO */
2424 lpfc_rcv_padisc_reglogin_issue, /* RCV_ADISC */
2425 lpfc_rcv_padisc_reglogin_issue, /* RCV_PDISC */
2426 lpfc_rcv_prlo_reglogin_issue, /* RCV_PRLO */
87af33fe 2427 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
dea3101e 2428 lpfc_disc_illegal, /* CMPL_PRLI */
2429 lpfc_disc_illegal, /* CMPL_LOGO */
2430 lpfc_disc_illegal, /* CMPL_ADISC */
2431 lpfc_cmpl_reglogin_reglogin_issue,/* CMPL_REG_LOGIN */
2432 lpfc_device_rm_reglogin_issue, /* DEVICE_RM */
2433 lpfc_device_recov_reglogin_issue,/* DEVICE_RECOVERY */
2434
2435 lpfc_rcv_plogi_prli_issue, /* RCV_PLOGI PRLI_ISSUE */
2436 lpfc_rcv_prli_prli_issue, /* RCV_PRLI */
2437 lpfc_rcv_logo_prli_issue, /* RCV_LOGO */
2438 lpfc_rcv_padisc_prli_issue, /* RCV_ADISC */
2439 lpfc_rcv_padisc_prli_issue, /* RCV_PDISC */
2440 lpfc_rcv_prlo_prli_issue, /* RCV_PRLO */
87af33fe 2441 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
dea3101e 2442 lpfc_cmpl_prli_prli_issue, /* CMPL_PRLI */
2443 lpfc_disc_illegal, /* CMPL_LOGO */
2444 lpfc_disc_illegal, /* CMPL_ADISC */
2445 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2446 lpfc_device_rm_prli_issue, /* DEVICE_RM */
2447 lpfc_device_recov_prli_issue, /* DEVICE_RECOVERY */
2448
086a345f
JS		 2449 lpfc_rcv_plogi_logo_issue, /* RCV_PLOGI LOGO_ISSUE */
2450 lpfc_rcv_prli_logo_issue, /* RCV_PRLI */
2451 lpfc_rcv_logo_logo_issue, /* RCV_LOGO */
2452 lpfc_rcv_padisc_logo_issue, /* RCV_ADISC */
2453 lpfc_rcv_padisc_logo_issue, /* RCV_PDISC */
2454 lpfc_rcv_prlo_logo_issue, /* RCV_PRLO */
2455 lpfc_cmpl_plogi_illegal, /* CMPL_PLOGI */
2456 lpfc_disc_illegal, /* CMPL_PRLI */
2457 lpfc_cmpl_logo_logo_issue, /* CMPL_LOGO */
2458 lpfc_disc_illegal, /* CMPL_ADISC */
2459 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2460 lpfc_device_rm_logo_issue, /* DEVICE_RM */
2461 lpfc_device_recov_logo_issue, /* DEVICE_RECOVERY */
2462
dea3101e 2463 lpfc_rcv_plogi_unmap_node, /* RCV_PLOGI UNMAPPED_NODE */
2464 lpfc_rcv_prli_unmap_node, /* RCV_PRLI */
2465 lpfc_rcv_logo_unmap_node, /* RCV_LOGO */
2466 lpfc_rcv_padisc_unmap_node, /* RCV_ADISC */
2467 lpfc_rcv_padisc_unmap_node, /* RCV_PDISC */
2468 lpfc_rcv_prlo_unmap_node, /* RCV_PRLO */
2469 lpfc_disc_illegal, /* CMPL_PLOGI */
2470 lpfc_disc_illegal, /* CMPL_PRLI */
2471 lpfc_disc_illegal, /* CMPL_LOGO */
2472 lpfc_disc_illegal, /* CMPL_ADISC */
2473 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2474 lpfc_disc_illegal, /* DEVICE_RM */
2475 lpfc_device_recov_unmap_node, /* DEVICE_RECOVERY */
2476
2477 lpfc_rcv_plogi_mapped_node, /* RCV_PLOGI MAPPED_NODE */
2478 lpfc_rcv_prli_mapped_node, /* RCV_PRLI */
2479 lpfc_rcv_logo_mapped_node, /* RCV_LOGO */
2480 lpfc_rcv_padisc_mapped_node, /* RCV_ADISC */
2481 lpfc_rcv_padisc_mapped_node, /* RCV_PDISC */
2482 lpfc_rcv_prlo_mapped_node, /* RCV_PRLO */
2483 lpfc_disc_illegal, /* CMPL_PLOGI */
2484 lpfc_disc_illegal, /* CMPL_PRLI */
2485 lpfc_disc_illegal, /* CMPL_LOGO */
2486 lpfc_disc_illegal, /* CMPL_ADISC */
2487 lpfc_disc_illegal, /* CMPL_REG_LOGIN */
2488 lpfc_disc_illegal, /* DEVICE_RM */
2489 lpfc_device_recov_mapped_node, /* DEVICE_RECOVERY */
2490
2491 lpfc_rcv_plogi_npr_node, /* RCV_PLOGI NPR_NODE */
2492 lpfc_rcv_prli_npr_node, /* RCV_PRLI */
2493 lpfc_rcv_logo_npr_node, /* RCV_LOGO */
2494 lpfc_rcv_padisc_npr_node, /* RCV_ADISC */
2495 lpfc_rcv_padisc_npr_node, /* RCV_PDISC */
2496 lpfc_rcv_prlo_npr_node, /* RCV_PRLO */
c9f8735b
JW		 2497 lpfc_cmpl_plogi_npr_node, /* CMPL_PLOGI */
2498 lpfc_cmpl_prli_npr_node, /* CMPL_PRLI */
dea3101e 2499 lpfc_cmpl_logo_npr_node, /* CMPL_LOGO */
c9f8735b 2500 lpfc_cmpl_adisc_npr_node, /* CMPL_ADISC */
dea3101e 2501 lpfc_cmpl_reglogin_npr_node, /* CMPL_REG_LOGIN */
2502 lpfc_device_rm_npr_node, /* DEVICE_RM */
2503 lpfc_device_recov_npr_node, /* DEVICE_RECOVERY */
2504};
2505
2506int
2e0fef85
JS		 2507lpfc_disc_state_machine(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2508 void *arg, uint32_t evt)
dea3101e 2509{
2510 uint32_t cur_state, rc;
2e0fef85 2511 uint32_t(*func) (struct lpfc_vport *, struct lpfc_nodelist *, void *,
dea3101e 2512 uint32_t);
e47c9093
JS		 2513 uint32_t got_ndlp = 0;
2514
2515 if (lpfc_nlp_get(ndlp))
2516 got_ndlp = 1;
dea3101e 2517
dea3101e 2518 cur_state = ndlp->nlp_state;
2519
2520 /* DSM in event <evt> on NPort <nlp_DID> in state <cur_state> */
e8b62011
JS		 2521 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2522 "0211 DSM in event x%x on NPort x%x in "
2523 "state %d Data: x%x\n",
2524 evt, ndlp->nlp_DID, cur_state, ndlp->nlp_flag);
dea3101e 2525
858c9f6c
JS		 2526 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2527 "DSM in: evt:%d ste:%d did:x%x",
2528 evt, cur_state, ndlp->nlp_DID);
2529
dea3101e 2530 func = lpfc_disc_action[(cur_state * NLP_EVT_MAX_EVENT) + evt];
2e0fef85 2531 rc = (func) (vport, ndlp, arg, evt);
dea3101e 2532
2533 /* DSM out state <rc> on NPort <nlp_DID> */
e47c9093
JS		 2534 if (got_ndlp) {
2535 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
e8b62011
JS		 2536 "0212 DSM out state %d on NPort x%x Data: x%x\n",
2537 rc, ndlp->nlp_DID, ndlp->nlp_flag);
dea3101e 2538
e47c9093
JS		 2539 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2540 "DSM out: ste:%d did:x%x flg:x%x",
2541 rc, ndlp->nlp_DID, ndlp->nlp_flag);
2542 /* Decrement the ndlp reference count held for this function */
2543 lpfc_nlp_put(ndlp);
2544 } else {
2545 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
d7c255b2 2546 "0213 DSM out state %d on NPort free\n", rc);
858c9f6c 2547
e47c9093
JS		 2548 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_DSM,
2549 "DSM out: ste:%d did:x%x flg:x%x",
2550 rc, 0, 0);
2551 }
dea3101e 2552
c9f8735b 2553 return rc;
dea3101e 2554}
Linux 6.x block layer and io_uring tree(s)