1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
10 * *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 *******************************************************************/
23 /* See Fibre Channel protocol T11 FC-LS for details */
24 #include <linux/blkdev.h>
25 #include <linux/pci.h>
26 #include <linux/slab.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29
30 #include <scsi/scsi.h>
31 #include <scsi/scsi_device.h>
32 #include <scsi/scsi_host.h>
33 #include <scsi/scsi_transport_fc.h>
34 #include <uapi/scsi/fc/fc_fs.h>
35 #include <uapi/scsi/fc/fc_els.h>
36
37 #include "lpfc_hw4.h"
38 #include "lpfc_hw.h"
39 #include "lpfc_sli.h"
40 #include "lpfc_sli4.h"
41 #include "lpfc_nl.h"
42 #include "lpfc_disc.h"
43 #include "lpfc_scsi.h"
44 #include "lpfc.h"
45 #include "lpfc_logmsg.h"
46 #include "lpfc_crtn.h"
47 #include "lpfc_vport.h"
48 #include "lpfc_debugfs.h"
49
50 static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
51 struct lpfc_iocbq *);
52 static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
53 struct lpfc_iocbq *);
54 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
55 static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
56 struct lpfc_nodelist *ndlp, uint8_t retry);
57 static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
58 struct lpfc_iocbq *iocb);
59 static void lpfc_cmpl_els_edc(struct lpfc_hba *phba,
60 struct lpfc_iocbq *cmdiocb,
61 struct lpfc_iocbq *rspiocb);
62 static void lpfc_cmpl_els_uvem(struct lpfc_hba *, struct lpfc_iocbq *,
63 struct lpfc_iocbq *);
64
65 static int lpfc_max_els_tries = 3;
66
67 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport);
68 static void lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max);
69 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid);
70
71 /**
72 * lpfc_els_chk_latt - Check host link attention event for a vport
73 * @vport: pointer to a host virtual N_Port data structure.
74 *
75 * This routine checks whether there is an outstanding host link
76 * attention event during the discovery process with the @vport. It is done
77 * by reading the HBA's Host Attention (HA) register. If there is any host
78 * link attention events during this @vport's discovery process, the @vport
79 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
80 * be issued if the link state is not already in host link cleared state,
81 * and a return code shall indicate whether the host link attention event
82 * had happened.
83 *
84 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
85 * state in LPFC_VPORT_READY, the request for checking host link attention
86 * event will be ignored and a return code shall indicate no host link
87 * attention event had happened.
88 *
89 * Return codes
90 * 0 - no host link attention event happened
91 * 1 - host link attention event happened
92 **/
93 int
lpfc_els_chk_latt(struct lpfc_vport * vport)94 lpfc_els_chk_latt(struct lpfc_vport *vport)
95 {
96 struct lpfc_hba *phba = vport->phba;
97 uint32_t ha_copy;
98
99 if (vport->port_state >= LPFC_VPORT_READY ||
100 phba->link_state == LPFC_LINK_DOWN ||
101 phba->sli_rev > LPFC_SLI_REV3)
102 return 0;
103
104 /* Read the HBA Host Attention Register */
105 if (lpfc_readl(phba->HAregaddr, &ha_copy))
106 return 1;
107
108 if (!(ha_copy & HA_LATT))
109 return 0;
110
111 /* Pending Link Event during Discovery */
112 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
113 "0237 Pending Link Event during "
114 "Discovery: State x%x\n",
115 phba->pport->port_state);
116
117 /* CLEAR_LA should re-enable link attention events and
118 * we should then immediately take a LATT event. The
119 * LATT processing should call lpfc_linkdown() which
120 * will cleanup any left over in-progress discovery
121 * events.
122 */
123 set_bit(FC_ABORT_DISCOVERY, &vport->fc_flag);
124
125 if (phba->link_state != LPFC_CLEAR_LA)
126 lpfc_issue_clear_la(phba, vport);
127
128 return 1;
129 }
130
lpfc_is_els_acc_rsp(struct lpfc_dmabuf * buf)131 static bool lpfc_is_els_acc_rsp(struct lpfc_dmabuf *buf)
132 {
133 struct fc_els_ls_acc *rsp = buf->virt;
134
135 if (rsp && rsp->la_cmd == ELS_LS_ACC)
136 return true;
137 return false;
138 }
139
140 /**
141 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
142 * @vport: pointer to a host virtual N_Port data structure.
143 * @expect_rsp: flag indicating whether response is expected.
144 * @cmd_size: size of the ELS command.
145 * @retry: number of retries to the command when it fails.
146 * @ndlp: pointer to a node-list data structure.
147 * @did: destination identifier.
148 * @elscmd: the ELS command code.
149 *
150 * This routine is used for allocating a lpfc-IOCB data structure from
151 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
152 * passed into the routine for discovery state machine to issue an Extended
153 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
154 * and preparation routine that is used by all the discovery state machine
155 * routines and the ELS command-specific fields will be later set up by
156 * the individual discovery machine routines after calling this routine
157 * allocating and preparing a generic IOCB data structure. It fills in the
158 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
159 * payload and response payload (if expected). The reference count on the
160 * ndlp is incremented by 1 and the reference to the ndlp is put into
161 * ndlp of the IOCB data structure for this IOCB to hold the ndlp
162 * reference for the command's callback function to access later.
163 *
164 * Return code
165 * Pointer to the newly allocated/prepared els iocb data structure
166 * NULL - when els iocb data structure allocation/preparation failed
167 **/
168 struct lpfc_iocbq *
lpfc_prep_els_iocb(struct lpfc_vport * vport,u8 expect_rsp,u16 cmd_size,u8 retry,struct lpfc_nodelist * ndlp,u32 did,u32 elscmd)169 lpfc_prep_els_iocb(struct lpfc_vport *vport, u8 expect_rsp,
170 u16 cmd_size, u8 retry,
171 struct lpfc_nodelist *ndlp, u32 did,
172 u32 elscmd)
173 {
174 struct lpfc_hba *phba = vport->phba;
175 struct lpfc_iocbq *elsiocb;
176 struct lpfc_dmabuf *pcmd, *prsp, *pbuflist, *bmp;
177 struct ulp_bde64_le *bpl;
178 u32 timeout = 0;
179
180 if (!lpfc_is_link_up(phba))
181 return NULL;
182
183 /* Allocate buffer for command iocb */
184 elsiocb = lpfc_sli_get_iocbq(phba);
185 if (!elsiocb)
186 return NULL;
187
188 /*
189 * If this command is for fabric controller and HBA running
190 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
191 */
192 if (did == Fabric_DID &&
193 test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) &&
194 (elscmd == ELS_CMD_FLOGI ||
195 elscmd == ELS_CMD_FDISC ||
196 elscmd == ELS_CMD_LOGO))
197 switch (elscmd) {
198 case ELS_CMD_FLOGI:
199 elsiocb->cmd_flag |=
200 ((LPFC_ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
201 & LPFC_FIP_ELS_ID_MASK);
202 break;
203 case ELS_CMD_FDISC:
204 elsiocb->cmd_flag |=
205 ((LPFC_ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
206 & LPFC_FIP_ELS_ID_MASK);
207 break;
208 case ELS_CMD_LOGO:
209 elsiocb->cmd_flag |=
210 ((LPFC_ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
211 & LPFC_FIP_ELS_ID_MASK);
212 break;
213 }
214 else
215 elsiocb->cmd_flag &= ~LPFC_FIP_ELS_ID_MASK;
216
217 /* fill in BDEs for command */
218 /* Allocate buffer for command payload */
219 pcmd = kmalloc(sizeof(*pcmd), GFP_KERNEL);
220 if (pcmd)
221 pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
222 if (!pcmd || !pcmd->virt)
223 goto els_iocb_free_pcmb_exit;
224
225 INIT_LIST_HEAD(&pcmd->list);
226
227 /* Allocate buffer for response payload */
228 if (expect_rsp) {
229 prsp = kmalloc(sizeof(*prsp), GFP_KERNEL);
230 if (prsp)
231 prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
232 &prsp->phys);
233 if (!prsp || !prsp->virt)
234 goto els_iocb_free_prsp_exit;
235 INIT_LIST_HEAD(&prsp->list);
236 } else {
237 prsp = NULL;
238 }
239
240 /* Allocate buffer for Buffer ptr list */
241 pbuflist = kmalloc(sizeof(*pbuflist), GFP_KERNEL);
242 if (pbuflist)
243 pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
244 &pbuflist->phys);
245 if (!pbuflist || !pbuflist->virt)
246 goto els_iocb_free_pbuf_exit;
247
248 INIT_LIST_HEAD(&pbuflist->list);
249
250 if (expect_rsp) {
251 switch (elscmd) {
252 case ELS_CMD_FLOGI:
253 timeout = FF_DEF_RATOV * 2;
254 break;
255 case ELS_CMD_LOGO:
256 timeout = phba->fc_ratov;
257 break;
258 default:
259 timeout = phba->fc_ratov * 2;
260 }
261
262 /* Fill SGE for the num bde count */
263 elsiocb->num_bdes = 2;
264 }
265
266 if (phba->sli_rev == LPFC_SLI_REV4)
267 bmp = pcmd;
268 else
269 bmp = pbuflist;
270
271 lpfc_sli_prep_els_req_rsp(phba, elsiocb, vport, bmp, cmd_size, did,
272 elscmd, timeout, expect_rsp);
273
274 bpl = (struct ulp_bde64_le *)pbuflist->virt;
275 bpl->addr_low = cpu_to_le32(putPaddrLow(pcmd->phys));
276 bpl->addr_high = cpu_to_le32(putPaddrHigh(pcmd->phys));
277 bpl->type_size = cpu_to_le32(cmd_size);
278 bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
279
280 if (expect_rsp) {
281 bpl++;
282 bpl->addr_low = cpu_to_le32(putPaddrLow(prsp->phys));
283 bpl->addr_high = cpu_to_le32(putPaddrHigh(prsp->phys));
284 bpl->type_size = cpu_to_le32(FCELSSIZE);
285 bpl->type_size |= cpu_to_le32(ULP_BDE64_TYPE_BDE_64);
286 }
287
288 elsiocb->cmd_dmabuf = pcmd;
289 elsiocb->bpl_dmabuf = pbuflist;
290 elsiocb->retry = retry;
291 elsiocb->vport = vport;
292 elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;
293
294 if (prsp)
295 list_add(&prsp->list, &pcmd->list);
296 if (expect_rsp) {
297 /* Xmit ELS command <elsCmd> to remote NPORT <did> */
298 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
299 "0116 Xmit ELS command x%x to remote "
300 "NPORT x%x I/O tag: x%x, port state:x%x "
301 "rpi x%x fc_flag:x%lx\n",
302 elscmd, did, elsiocb->iotag,
303 vport->port_state, ndlp->nlp_rpi,
304 vport->fc_flag);
305 } else {
306 /* Xmit ELS response <elsCmd> to remote NPORT <did> */
307 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
308 "0117 Xmit ELS response x%x to remote "
309 "NPORT x%x I/O tag: x%x, size: x%x "
310 "port_state x%x rpi x%x fc_flag x%lx\n",
311 elscmd, ndlp->nlp_DID, elsiocb->iotag,
312 cmd_size, vport->port_state,
313 ndlp->nlp_rpi, vport->fc_flag);
314 }
315
316 return elsiocb;
317
318 els_iocb_free_pbuf_exit:
319 if (expect_rsp)
320 lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
321 kfree(pbuflist);
322
323 els_iocb_free_prsp_exit:
324 lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
325 kfree(prsp);
326
327 els_iocb_free_pcmb_exit:
328 kfree(pcmd);
329 lpfc_sli_release_iocbq(phba, elsiocb);
330 return NULL;
331 }
332
333 /**
334 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
335 * @vport: pointer to a host virtual N_Port data structure.
336 *
337 * This routine issues a fabric registration login for a @vport. An
338 * active ndlp node with Fabric_DID must already exist for this @vport.
339 * The routine invokes two mailbox commands to carry out fabric registration
340 * login through the HBA firmware: the first mailbox command requests the
341 * HBA to perform link configuration for the @vport; and the second mailbox
342 * command requests the HBA to perform the actual fabric registration login
343 * with the @vport.
344 *
345 * Return code
346 * 0 - successfully issued fabric registration login for @vport
347 * -ENXIO -- failed to issue fabric registration login for @vport
348 **/
349 int
lpfc_issue_fabric_reglogin(struct lpfc_vport * vport)350 lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
351 {
352 struct lpfc_hba *phba = vport->phba;
353 LPFC_MBOXQ_t *mbox;
354 struct lpfc_nodelist *ndlp;
355 struct serv_parm *sp;
356 int rc;
357 int err = 0;
358
359 sp = &phba->fc_fabparam;
360 ndlp = lpfc_findnode_did(vport, Fabric_DID);
361 if (!ndlp) {
362 err = 1;
363 goto fail;
364 }
365
366 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
367 if (!mbox) {
368 err = 2;
369 goto fail;
370 }
371
372 vport->port_state = LPFC_FABRIC_CFG_LINK;
373 lpfc_config_link(phba, mbox);
374 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
375 mbox->vport = vport;
376
377 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
378 if (rc == MBX_NOT_FINISHED) {
379 err = 3;
380 goto fail_free_mbox;
381 }
382
383 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
384 if (!mbox) {
385 err = 4;
386 goto fail;
387 }
388 rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox,
389 ndlp->nlp_rpi);
390 if (rc) {
391 err = 5;
392 goto fail_free_mbox;
393 }
394
395 mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
396 mbox->vport = vport;
397 /* increment the reference count on ndlp to hold reference
398 * for the callback routine.
399 */
400 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
401 if (!mbox->ctx_ndlp) {
402 err = 6;
403 goto fail_free_mbox;
404 }
405
406 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
407 if (rc == MBX_NOT_FINISHED) {
408 err = 7;
409 goto fail_issue_reg_login;
410 }
411
412 return 0;
413
414 fail_issue_reg_login:
415 /* decrement the reference count on ndlp just incremented
416 * for the failed mbox command.
417 */
418 lpfc_nlp_put(ndlp);
419 fail_free_mbox:
420 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
421 fail:
422 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
423 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
424 "0249 Cannot issue Register Fabric login: Err %d\n",
425 err);
426 return -ENXIO;
427 }
428
429 /**
430 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
431 * @vport: pointer to a host virtual N_Port data structure.
432 *
433 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
434 * the @vport. This mailbox command is necessary for SLI4 port only.
435 *
436 * Return code
437 * 0 - successfully issued REG_VFI for @vport
438 * A failure code otherwise.
439 **/
440 int
lpfc_issue_reg_vfi(struct lpfc_vport * vport)441 lpfc_issue_reg_vfi(struct lpfc_vport *vport)
442 {
443 struct lpfc_hba *phba = vport->phba;
444 LPFC_MBOXQ_t *mboxq = NULL;
445 struct lpfc_nodelist *ndlp;
446 struct lpfc_dmabuf *dmabuf = NULL;
447 int rc = 0;
448
449 /* move forward in case of SLI4 FC port loopback test and pt2pt mode */
450 if ((phba->sli_rev == LPFC_SLI_REV4) &&
451 !(phba->link_flag & LS_LOOPBACK_MODE) &&
452 !test_bit(FC_PT2PT, &vport->fc_flag)) {
453 ndlp = lpfc_findnode_did(vport, Fabric_DID);
454 if (!ndlp) {
455 rc = -ENODEV;
456 goto fail;
457 }
458 }
459
460 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
461 if (!mboxq) {
462 rc = -ENOMEM;
463 goto fail;
464 }
465
466 /* Supply CSP's only if we are fabric connect or pt-to-pt connect */
467 if (test_bit(FC_FABRIC, &vport->fc_flag) ||
468 test_bit(FC_PT2PT, &vport->fc_flag)) {
469 rc = lpfc_mbox_rsrc_prep(phba, mboxq);
470 if (rc) {
471 rc = -ENOMEM;
472 goto fail_mbox;
473 }
474 dmabuf = mboxq->ctx_buf;
475 memcpy(dmabuf->virt, &phba->fc_fabparam,
476 sizeof(struct serv_parm));
477 }
478
479 vport->port_state = LPFC_FABRIC_CFG_LINK;
480 if (dmabuf) {
481 lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
482 /* lpfc_reg_vfi memsets the mailbox. Restore the ctx_buf. */
483 mboxq->ctx_buf = dmabuf;
484 } else {
485 lpfc_reg_vfi(mboxq, vport, 0);
486 }
487
488 mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
489 mboxq->vport = vport;
490 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
491 if (rc == MBX_NOT_FINISHED) {
492 rc = -ENXIO;
493 goto fail_mbox;
494 }
495 return 0;
496
497 fail_mbox:
498 lpfc_mbox_rsrc_cleanup(phba, mboxq, MBOX_THD_UNLOCKED);
499 fail:
500 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
501 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
502 "0289 Issue Register VFI failed: Err %d\n", rc);
503 return rc;
504 }
505
506 /**
507 * lpfc_issue_unreg_vfi - Unregister VFI for this vport's fabric login
508 * @vport: pointer to a host virtual N_Port data structure.
509 *
510 * This routine issues a UNREG_VFI mailbox with the vfi, vpi, fcfi triplet for
511 * the @vport. This mailbox command is necessary for SLI4 port only.
512 *
513 * Return code
514 * 0 - successfully issued REG_VFI for @vport
515 * A failure code otherwise.
516 **/
517 int
lpfc_issue_unreg_vfi(struct lpfc_vport * vport)518 lpfc_issue_unreg_vfi(struct lpfc_vport *vport)
519 {
520 struct lpfc_hba *phba = vport->phba;
521 LPFC_MBOXQ_t *mboxq;
522 int rc;
523
524 mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
525 if (!mboxq) {
526 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
527 "2556 UNREG_VFI mbox allocation failed"
528 "HBA state x%x\n", phba->pport->port_state);
529 return -ENOMEM;
530 }
531
532 lpfc_unreg_vfi(mboxq, vport);
533 mboxq->vport = vport;
534 mboxq->mbox_cmpl = lpfc_unregister_vfi_cmpl;
535
536 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
537 if (rc == MBX_NOT_FINISHED) {
538 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
539 "2557 UNREG_VFI issue mbox failed rc x%x "
540 "HBA state x%x\n",
541 rc, phba->pport->port_state);
542 mempool_free(mboxq, phba->mbox_mem_pool);
543 return -EIO;
544 }
545
546 clear_bit(FC_VFI_REGISTERED, &vport->fc_flag);
547 return 0;
548 }
549
550 /**
551 * lpfc_check_clean_addr_bit - Check whether assigned FCID is clean.
552 * @vport: pointer to a host virtual N_Port data structure.
553 * @sp: pointer to service parameter data structure.
554 *
555 * This routine is called from FLOGI/FDISC completion handler functions.
556 * lpfc_check_clean_addr_bit return 1 when FCID/Fabric portname/ Fabric
557 * node nodename is changed in the completion service parameter else return
558 * 0. This function also set flag in the vport data structure to delay
559 * NP_Port discovery after the FLOGI/FDISC completion if Clean address bit
560 * in FLOGI/FDISC response is cleared and FCID/Fabric portname/ Fabric
561 * node nodename is changed in the completion service parameter.
562 *
563 * Return code
564 * 0 - FCID and Fabric Nodename and Fabric portname is not changed.
565 * 1 - FCID or Fabric Nodename or Fabric portname is changed.
566 *
567 **/
568 static uint8_t
lpfc_check_clean_addr_bit(struct lpfc_vport * vport,struct serv_parm * sp)569 lpfc_check_clean_addr_bit(struct lpfc_vport *vport,
570 struct serv_parm *sp)
571 {
572 struct lpfc_hba *phba = vport->phba;
573 uint8_t fabric_param_changed = 0;
574
575 if ((vport->fc_prevDID != vport->fc_myDID) ||
576 memcmp(&vport->fabric_portname, &sp->portName,
577 sizeof(struct lpfc_name)) ||
578 memcmp(&vport->fabric_nodename, &sp->nodeName,
579 sizeof(struct lpfc_name)) ||
580 (vport->vport_flag & FAWWPN_PARAM_CHG)) {
581 fabric_param_changed = 1;
582 vport->vport_flag &= ~FAWWPN_PARAM_CHG;
583 }
584 /*
585 * Word 1 Bit 31 in common service parameter is overloaded.
586 * Word 1 Bit 31 in FLOGI request is multiple NPort request
587 * Word 1 Bit 31 in FLOGI response is clean address bit
588 *
589 * If fabric parameter is changed and clean address bit is
590 * cleared delay nport discovery if
591 * - vport->fc_prevDID != 0 (not initial discovery) OR
592 * - lpfc_delay_discovery module parameter is set.
593 */
594 if (fabric_param_changed && !sp->cmn.clean_address_bit &&
595 (vport->fc_prevDID || phba->cfg_delay_discovery))
596 set_bit(FC_DISC_DELAYED, &vport->fc_flag);
597
598 return fabric_param_changed;
599 }
600
601
602 /**
603 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
604 * @vport: pointer to a host virtual N_Port data structure.
605 * @ndlp: pointer to a node-list data structure.
606 * @sp: pointer to service parameter data structure.
607 * @ulp_word4: command response value
608 *
609 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
610 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
611 * port in a fabric topology. It properly sets up the parameters to the @ndlp
612 * from the IOCB response. It also check the newly assigned N_Port ID to the
613 * @vport against the previously assigned N_Port ID. If it is different from
614 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
615 * is invoked on all the remaining nodes with the @vport to unregister the
616 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
617 * is invoked to register login to the fabric.
618 *
619 * Return code
620 * 0 - Success (currently, always return 0)
621 **/
622 static int
lpfc_cmpl_els_flogi_fabric(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp,uint32_t ulp_word4)623 lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
624 struct serv_parm *sp, uint32_t ulp_word4)
625 {
626 struct lpfc_hba *phba = vport->phba;
627 struct lpfc_nodelist *np;
628 struct lpfc_nodelist *next_np;
629 uint8_t fabric_param_changed;
630
631 set_bit(FC_FABRIC, &vport->fc_flag);
632
633 phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
634 if (sp->cmn.edtovResolution) /* E_D_TOV ticks are in nanoseconds */
635 phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;
636
637 phba->fc_edtovResol = sp->cmn.edtovResolution;
638 phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;
639
640 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP)
641 set_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
642
643 vport->fc_myDID = ulp_word4 & Mask_DID;
644 memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
645 memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
646 ndlp->nlp_class_sup = 0;
647 if (sp->cls1.classValid)
648 ndlp->nlp_class_sup |= FC_COS_CLASS1;
649 if (sp->cls2.classValid)
650 ndlp->nlp_class_sup |= FC_COS_CLASS2;
651 if (sp->cls3.classValid)
652 ndlp->nlp_class_sup |= FC_COS_CLASS3;
653 if (sp->cls4.classValid)
654 ndlp->nlp_class_sup |= FC_COS_CLASS4;
655 ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
656 sp->cmn.bbRcvSizeLsb;
657
658 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
659 if (fabric_param_changed) {
660 /* Reset FDMI attribute masks based on config parameter */
661 if (phba->cfg_enable_SmartSAN ||
662 (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
663 /* Setup appropriate attribute masks */
664 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
665 if (phba->cfg_enable_SmartSAN)
666 vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
667 else
668 vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
669 } else {
670 vport->fdmi_hba_mask = 0;
671 vport->fdmi_port_mask = 0;
672 }
673
674 }
675 memcpy(&vport->fabric_portname, &sp->portName,
676 sizeof(struct lpfc_name));
677 memcpy(&vport->fabric_nodename, &sp->nodeName,
678 sizeof(struct lpfc_name));
679 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
680
681 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
682 if (sp->cmn.response_multiple_NPort) {
683 lpfc_printf_vlog(vport, KERN_WARNING,
684 LOG_ELS | LOG_VPORT,
685 "1816 FLOGI NPIV supported, "
686 "response data 0x%x\n",
687 sp->cmn.response_multiple_NPort);
688 spin_lock_irq(&phba->hbalock);
689 phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
690 spin_unlock_irq(&phba->hbalock);
691 } else {
692 /* Because we asked f/w for NPIV it still expects us
693 to call reg_vnpid at least for the physical host */
694 lpfc_printf_vlog(vport, KERN_WARNING,
695 LOG_ELS | LOG_VPORT,
696 "1817 Fabric does not support NPIV "
697 "- configuring single port mode.\n");
698 spin_lock_irq(&phba->hbalock);
699 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
700 spin_unlock_irq(&phba->hbalock);
701 }
702 }
703
704 /*
705 * For FC we need to do some special processing because of the SLI
706 * Port's default settings of the Common Service Parameters.
707 */
708 if ((phba->sli_rev == LPFC_SLI_REV4) &&
709 (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)) {
710 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
711 if (fabric_param_changed)
712 lpfc_unregister_fcf_prep(phba);
713
714 /* This should just update the VFI CSPs*/
715 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
716 lpfc_issue_reg_vfi(vport);
717 }
718
719 if (fabric_param_changed &&
720 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
721
722 /* If our NportID changed, we need to ensure all
723 * remaining NPORTs get unreg_login'ed.
724 */
725 list_for_each_entry_safe(np, next_np,
726 &vport->fc_nodes, nlp_listp) {
727 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
728 !test_bit(NLP_NPR_ADISC, &np->nlp_flag))
729 continue;
730 clear_bit(NLP_NPR_ADISC, &np->nlp_flag);
731 lpfc_unreg_rpi(vport, np);
732 }
733 lpfc_cleanup_pending_mbox(vport);
734
735 if (phba->sli_rev == LPFC_SLI_REV4) {
736 lpfc_sli4_unreg_all_rpis(vport);
737 lpfc_mbx_unreg_vpi(vport);
738 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
739 }
740
741 /*
742 * For SLI3 and SLI4, the VPI needs to be reregistered in
743 * response to this fabric parameter change event.
744 */
745 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
746 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
747 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
748 /*
749 * Driver needs to re-reg VPI in order for f/w
750 * to update the MAC address.
751 */
752 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
753 lpfc_register_new_vport(phba, vport, ndlp);
754 return 0;
755 }
756
757 if (phba->sli_rev < LPFC_SLI_REV4) {
758 lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
759 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
760 test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag))
761 lpfc_register_new_vport(phba, vport, ndlp);
762 else
763 lpfc_issue_fabric_reglogin(vport);
764 } else {
765 ndlp->nlp_type |= NLP_FABRIC;
766 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
767 if ((!test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) &&
768 (vport->vpi_state & LPFC_VPI_REGISTERED)) {
769 lpfc_start_fdiscs(phba);
770 lpfc_do_scr_ns_plogi(phba, vport);
771 } else if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag))
772 lpfc_issue_init_vpi(vport);
773 else {
774 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
775 "3135 Need register VFI: (x%x/%x)\n",
776 vport->fc_prevDID, vport->fc_myDID);
777 lpfc_issue_reg_vfi(vport);
778 }
779 }
780 return 0;
781 }
782
783 /**
784 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
785 * @vport: pointer to a host virtual N_Port data structure.
786 * @ndlp: pointer to a node-list data structure.
787 * @sp: pointer to service parameter data structure.
788 *
789 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
790 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
791 * in a point-to-point topology. First, the @vport's N_Port Name is compared
792 * with the received N_Port Name: if the @vport's N_Port Name is greater than
793 * the received N_Port Name lexicographically, this node shall assign local
794 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
795 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
796 * this node shall just wait for the remote node to issue PLOGI and assign
797 * N_Port IDs.
798 *
799 * Return code
800 * 0 - Success
801 * -ENXIO - Fail
802 **/
803 static int
lpfc_cmpl_els_flogi_nport(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,struct serv_parm * sp)804 lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
805 struct serv_parm *sp)
806 {
807 struct lpfc_hba *phba = vport->phba;
808 LPFC_MBOXQ_t *mbox;
809 int rc;
810
811 clear_bit(FC_FABRIC, &vport->fc_flag);
812 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
813 set_bit(FC_PT2PT, &vport->fc_flag);
814
815 /* If we are pt2pt with another NPort, force NPIV off! */
816 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;
817
818 /* If physical FC port changed, unreg VFI and ALL VPIs / RPIs */
819 if ((phba->sli_rev == LPFC_SLI_REV4) && phba->fc_topology_changed) {
820 lpfc_unregister_fcf_prep(phba);
821 clear_bit(FC_VFI_REGISTERED, &vport->fc_flag);
822 phba->fc_topology_changed = 0;
823 }
824
825 rc = memcmp(&vport->fc_portname, &sp->portName,
826 sizeof(vport->fc_portname));
827
828 if (rc >= 0) {
829 /* This side will initiate the PLOGI */
830 set_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
831
832 /*
833 * N_Port ID cannot be 0, set our Id to LocalID
834 * the other side will be RemoteID.
835 */
836
837 /* not equal */
838 if (rc)
839 vport->fc_myDID = PT2PT_LocalID;
840
841 /* If not registered with a transport, decrement ndlp reference
842 * count indicating that ndlp can be safely released when other
843 * references are removed.
844 */
845 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
846 lpfc_nlp_put(ndlp);
847
848 ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
849 if (!ndlp) {
850 /*
851 * Cannot find existing Fabric ndlp, so allocate a
852 * new one
853 */
854 ndlp = lpfc_nlp_init(vport, PT2PT_RemoteID);
855 if (!ndlp)
856 goto fail;
857 }
858
859 memcpy(&ndlp->nlp_portname, &sp->portName,
860 sizeof(struct lpfc_name));
861 memcpy(&ndlp->nlp_nodename, &sp->nodeName,
862 sizeof(struct lpfc_name));
863 /* Set state will put ndlp onto node list if not already done */
864 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
865 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
866
867 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
868 if (!mbox)
869 goto fail;
870
871 lpfc_config_link(phba, mbox);
872
873 mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link;
874 mbox->vport = vport;
875 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
876 if (rc == MBX_NOT_FINISHED) {
877 mempool_free(mbox, phba->mbox_mem_pool);
878 goto fail;
879 }
880 } else {
881 /* This side will wait for the PLOGI. If not registered with
882 * a transport, decrement node reference count indicating that
883 * ndlp can be released when other references are removed.
884 */
885 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)))
886 lpfc_nlp_put(ndlp);
887
888 /* Start discovery - this should just do CLEAR_LA */
889 lpfc_disc_start(vport);
890 }
891
892 return 0;
893 fail:
894 return -ENXIO;
895 }
896
897 /**
898 * lpfc_cmpl_els_flogi - Completion callback function for flogi
899 * @phba: pointer to lpfc hba data structure.
900 * @cmdiocb: pointer to lpfc command iocb data structure.
901 * @rspiocb: pointer to lpfc response iocb data structure.
902 *
903 * This routine is the top-level completion callback function for issuing
904 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
905 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
906 * retry has been made (either immediately or delayed with lpfc_els_retry()
907 * returning 1), the command IOCB will be released and function returned.
908 * If the retry attempt has been given up (possibly reach the maximum
909 * number of retries), one additional decrement of ndlp reference shall be
910 * invoked before going out after releasing the command IOCB. This will
911 * actually release the remote node (Note, lpfc_els_free_iocb() will also
912 * invoke one decrement of ndlp reference count). If no error reported in
913 * the IOCB status, the command Port ID field is used to determine whether
914 * this is a point-to-point topology or a fabric topology: if the Port ID
915 * field is assigned, it is a fabric topology; otherwise, it is a
916 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
917 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
918 * specific topology completion conditions.
919 **/
920 static void
lpfc_cmpl_els_flogi(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)921 lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
922 struct lpfc_iocbq *rspiocb)
923 {
924 struct lpfc_vport *vport = cmdiocb->vport;
925 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
926 IOCB_t *irsp;
927 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
928 struct serv_parm *sp;
929 uint16_t fcf_index;
930 int rc;
931 u32 ulp_status, ulp_word4, tmo;
932 bool flogi_in_retry = false;
933
934 /* Check to see if link went down during discovery */
935 if (lpfc_els_chk_latt(vport)) {
936 /* One additional decrement on node reference count to
937 * trigger the release of the node
938 */
939 if (!(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
940 lpfc_nlp_put(ndlp);
941 goto out;
942 }
943
944 ulp_status = get_job_ulpstatus(phba, rspiocb);
945 ulp_word4 = get_job_word4(phba, rspiocb);
946
947 if (phba->sli_rev == LPFC_SLI_REV4) {
948 tmo = get_wqe_tmo(cmdiocb);
949 } else {
950 irsp = &rspiocb->iocb;
951 tmo = irsp->ulpTimeout;
952 }
953
954 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
955 "FLOGI cmpl: status:x%x/x%x state:x%x",
956 ulp_status, ulp_word4,
957 vport->port_state);
958
959 if (ulp_status) {
960 /*
961 * In case of FIP mode, perform roundrobin FCF failover
962 * due to new FCF discovery
963 */
964 if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag) &&
965 (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
966 if (phba->link_state < LPFC_LINK_UP)
967 goto stop_rr_fcf_flogi;
968 if ((phba->fcoe_cvl_eventtag_attn ==
969 phba->fcoe_cvl_eventtag) &&
970 (ulp_status == IOSTAT_LOCAL_REJECT) &&
971 ((ulp_word4 & IOERR_PARAM_MASK) ==
972 IOERR_SLI_ABORTED))
973 goto stop_rr_fcf_flogi;
974 else
975 phba->fcoe_cvl_eventtag_attn =
976 phba->fcoe_cvl_eventtag;
977 lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
978 "2611 FLOGI FCF (x%x), "
979 "status:x%x/x%x, tmo:x%x, perform "
980 "roundrobin FCF failover\n",
981 phba->fcf.current_rec.fcf_indx,
982 ulp_status, ulp_word4, tmo);
983 lpfc_sli4_set_fcf_flogi_fail(phba,
984 phba->fcf.current_rec.fcf_indx);
985 fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
986 rc = lpfc_sli4_fcf_rr_next_proc(vport, fcf_index);
987 if (rc)
988 goto out;
989 }
990
991 stop_rr_fcf_flogi:
992 /* FLOGI failure */
993 if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
994 ((ulp_word4 & IOERR_PARAM_MASK) ==
995 IOERR_LOOP_OPEN_FAILURE)))
996 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
997 "2858 FLOGI Status:x%x/x%x TMO"
998 ":x%x Data x%lx x%x\n",
999 ulp_status, ulp_word4, tmo,
1000 phba->hba_flag, phba->fcf.fcf_flag);
1001
1002 /* Check for retry */
1003 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
1004 /* Address a timing race with dev_loss. If dev_loss
1005 * is active on this FPort node, put the initial ref
1006 * count back to stop premature node release actions.
1007 */
1008 lpfc_check_nlp_post_devloss(vport, ndlp);
1009 flogi_in_retry = true;
1010 goto out;
1011 }
1012
1013 /* The FLOGI will not be retried. If the FPort node is not
1014 * registered with the SCSI transport, remove the initial
1015 * reference to trigger node release.
1016 */
1017 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag) &&
1018 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD))
1019 lpfc_nlp_put(ndlp);
1020
1021 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
1022 "0150 FLOGI Status:x%x/x%x "
1023 "xri x%x TMO:x%x refcnt %d\n",
1024 ulp_status, ulp_word4, cmdiocb->sli4_xritag,
1025 tmo, kref_read(&ndlp->kref));
1026
1027 /* If this is not a loop open failure, bail out */
1028 if (!(ulp_status == IOSTAT_LOCAL_REJECT &&
1029 ((ulp_word4 & IOERR_PARAM_MASK) ==
1030 IOERR_LOOP_OPEN_FAILURE))) {
1031 /* Warn FLOGI status */
1032 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
1033 "0100 FLOGI Status:x%x/x%x "
1034 "TMO:x%x\n",
1035 ulp_status, ulp_word4, tmo);
1036 goto flogifail;
1037 }
1038
1039 /* FLOGI failed, so there is no fabric */
1040 clear_bit(FC_FABRIC, &vport->fc_flag);
1041 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
1042 clear_bit(FC_PT2PT_NO_NVME, &vport->fc_flag);
1043
1044 /* If private loop, then allow max outstanding els to be
1045 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
1046 * alpa map would take too long otherwise.
1047 */
1048 if (phba->alpa_map[0] == 0)
1049 vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
1050 if ((phba->sli_rev == LPFC_SLI_REV4) &&
1051 (!test_bit(FC_VFI_REGISTERED, &vport->fc_flag) ||
1052 (vport->fc_prevDID != vport->fc_myDID) ||
1053 phba->fc_topology_changed)) {
1054 if (test_bit(FC_VFI_REGISTERED, &vport->fc_flag)) {
1055 if (phba->fc_topology_changed) {
1056 lpfc_unregister_fcf_prep(phba);
1057 clear_bit(FC_VFI_REGISTERED,
1058 &vport->fc_flag);
1059 phba->fc_topology_changed = 0;
1060 } else {
1061 lpfc_sli4_unreg_all_rpis(vport);
1062 }
1063 }
1064
1065 /* Do not register VFI if the driver aborted FLOGI */
1066 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
1067 lpfc_issue_reg_vfi(vport);
1068
1069 goto out;
1070 }
1071 goto flogifail;
1072 }
1073 clear_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag);
1074 clear_bit(FC_VPORT_LOGO_RCVD, &vport->fc_flag);
1075
1076 /*
1077 * The FLOGI succeeded. Sync the data for the CPU before
1078 * accessing it.
1079 */
1080 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
1081 if (!prsp)
1082 goto out;
1083 if (!lpfc_is_els_acc_rsp(prsp))
1084 goto out;
1085 sp = prsp->virt + sizeof(uint32_t);
1086
1087 /* FLOGI completes successfully */
1088 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1089 "0101 FLOGI completes successfully, I/O tag:x%x "
1090 "xri x%x Data: x%x x%x x%x x%x x%x x%lx x%x %d\n",
1091 cmdiocb->iotag, cmdiocb->sli4_xritag,
1092 ulp_word4, sp->cmn.e_d_tov,
1093 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution,
1094 vport->port_state, vport->fc_flag,
1095 sp->cmn.priority_tagging, kref_read(&ndlp->kref));
1096
1097 /* reinitialize the VMID datastructure before returning */
1098 if (lpfc_is_vmid_enabled(phba)) {
1099 lpfc_reinit_vmid(vport);
1100 vport->vmid_flag = 0;
1101 }
1102 if (sp->cmn.priority_tagging)
1103 vport->phba->pport->vmid_flag |= (LPFC_VMID_ISSUE_QFPA |
1104 LPFC_VMID_TYPE_PRIO);
1105
1106 /*
1107 * Address a timing race with dev_loss. If dev_loss is active on
1108 * this FPort node, put the initial ref count back to stop premature
1109 * node release actions.
1110 */
1111 lpfc_check_nlp_post_devloss(vport, ndlp);
1112 if (vport->port_state == LPFC_FLOGI) {
1113 /*
1114 * If Common Service Parameters indicate Nport
1115 * we are point to point, if Fport we are Fabric.
1116 */
1117 if (sp->cmn.fPort)
1118 rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp,
1119 ulp_word4);
1120 else if (!test_bit(HBA_FCOE_MODE, &phba->hba_flag))
1121 rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
1122 else {
1123 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
1124 "2831 FLOGI response with cleared Fabric "
1125 "bit fcf_index 0x%x "
1126 "Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
1127 "Fabric Name "
1128 "%02x%02x%02x%02x%02x%02x%02x%02x\n",
1129 phba->fcf.current_rec.fcf_indx,
1130 phba->fcf.current_rec.switch_name[0],
1131 phba->fcf.current_rec.switch_name[1],
1132 phba->fcf.current_rec.switch_name[2],
1133 phba->fcf.current_rec.switch_name[3],
1134 phba->fcf.current_rec.switch_name[4],
1135 phba->fcf.current_rec.switch_name[5],
1136 phba->fcf.current_rec.switch_name[6],
1137 phba->fcf.current_rec.switch_name[7],
1138 phba->fcf.current_rec.fabric_name[0],
1139 phba->fcf.current_rec.fabric_name[1],
1140 phba->fcf.current_rec.fabric_name[2],
1141 phba->fcf.current_rec.fabric_name[3],
1142 phba->fcf.current_rec.fabric_name[4],
1143 phba->fcf.current_rec.fabric_name[5],
1144 phba->fcf.current_rec.fabric_name[6],
1145 phba->fcf.current_rec.fabric_name[7]);
1146
1147 lpfc_nlp_put(ndlp);
1148 spin_lock_irq(&phba->hbalock);
1149 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1150 spin_unlock_irq(&phba->hbalock);
1151 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1152 clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag);
1153 phba->fcf.fcf_redisc_attempted = 0; /* reset */
1154 goto out;
1155 }
1156 if (!rc) {
1157 /* Mark the FCF discovery process done */
1158 if (test_bit(HBA_FIP_SUPPORT, &phba->hba_flag))
1159 lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
1160 LOG_ELS,
1161 "2769 FLOGI to FCF (x%x) "
1162 "completed successfully\n",
1163 phba->fcf.current_rec.fcf_indx);
1164 spin_lock_irq(&phba->hbalock);
1165 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1166 spin_unlock_irq(&phba->hbalock);
1167 clear_bit(FCF_RR_INPROG, &phba->hba_flag);
1168 clear_bit(HBA_DEVLOSS_TMO, &phba->hba_flag);
1169 phba->fcf.fcf_redisc_attempted = 0; /* reset */
1170 goto out;
1171 }
1172 } else if (vport->port_state > LPFC_FLOGI &&
1173 test_bit(FC_PT2PT, &vport->fc_flag)) {
1174 /*
1175 * In a p2p topology, it is possible that discovery has
1176 * already progressed, and this completion can be ignored.
1177 * Recheck the indicated topology.
1178 */
1179 if (!sp->cmn.fPort)
1180 goto out;
1181 }
1182
1183 flogifail:
1184 spin_lock_irq(&phba->hbalock);
1185 phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
1186 spin_unlock_irq(&phba->hbalock);
1187
1188 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
1189 /* FLOGI failed, so just use loop map to make discovery list */
1190 lpfc_disc_list_loopmap(vport);
1191
1192 /* Start discovery */
1193 lpfc_disc_start(vport);
1194 } else if (((ulp_status != IOSTAT_LOCAL_REJECT) ||
1195 (((ulp_word4 & IOERR_PARAM_MASK) !=
1196 IOERR_SLI_ABORTED) &&
1197 ((ulp_word4 & IOERR_PARAM_MASK) !=
1198 IOERR_SLI_DOWN))) &&
1199 (phba->link_state != LPFC_CLEAR_LA)) {
1200 /* If FLOGI failed enable link interrupt. */
1201 lpfc_issue_clear_la(phba, vport);
1202 }
1203 out:
1204 if (!flogi_in_retry)
1205 clear_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag);
1206
1207 lpfc_els_free_iocb(phba, cmdiocb);
1208 lpfc_nlp_put(ndlp);
1209 }
1210
1211 /**
1212 * lpfc_cmpl_els_link_down - Completion callback function for ELS command
1213 * aborted during a link down
1214 * @phba: pointer to lpfc hba data structure.
1215 * @cmdiocb: pointer to lpfc command iocb data structure.
1216 * @rspiocb: pointer to lpfc response iocb data structure.
1217 *
1218 */
1219 static void
lpfc_cmpl_els_link_down(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)1220 lpfc_cmpl_els_link_down(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1221 struct lpfc_iocbq *rspiocb)
1222 {
1223 uint32_t *pcmd;
1224 uint32_t cmd;
1225 u32 ulp_status, ulp_word4;
1226
1227 pcmd = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
1228 cmd = *pcmd;
1229
1230 ulp_status = get_job_ulpstatus(phba, rspiocb);
1231 ulp_word4 = get_job_word4(phba, rspiocb);
1232
1233 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1234 "6445 ELS completes after LINK_DOWN: "
1235 " Status %x/%x cmd x%x flg x%x iotag x%x\n",
1236 ulp_status, ulp_word4, cmd,
1237 cmdiocb->cmd_flag, cmdiocb->iotag);
1238
1239 if (cmdiocb->cmd_flag & LPFC_IO_FABRIC) {
1240 cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
1241 atomic_dec(&phba->fabric_iocb_count);
1242 }
1243 lpfc_els_free_iocb(phba, cmdiocb);
1244 }
1245
1246 /**
1247 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
1248 * @vport: pointer to a host virtual N_Port data structure.
1249 * @ndlp: pointer to a node-list data structure.
1250 * @retry: number of retries to the command IOCB.
1251 *
1252 * This routine issues a Fabric Login (FLOGI) Request ELS command
1253 * for a @vport. The initiator service parameters are put into the payload
1254 * of the FLOGI Request IOCB and the top-level callback function pointer
1255 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
1256 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
1257 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
1258 *
1259 * Note that the ndlp reference count will be incremented by 1 for holding the
1260 * ndlp and the reference to ndlp will be stored into the ndlp field of
1261 * the IOCB for the completion callback function to the FLOGI ELS command.
1262 *
1263 * Return code
1264 * 0 - successfully issued flogi iocb for @vport
1265 * 1 - failed to issue flogi iocb for @vport
1266 **/
1267 static int
lpfc_issue_els_flogi(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)1268 lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
1269 uint8_t retry)
1270 {
1271 struct lpfc_hba *phba = vport->phba;
1272 struct serv_parm *sp;
1273 union lpfc_wqe128 *wqe = NULL;
1274 IOCB_t *icmd = NULL;
1275 struct lpfc_iocbq *elsiocb;
1276 struct lpfc_iocbq defer_flogi_acc;
1277 u8 *pcmd, ct;
1278 uint16_t cmdsize;
1279 uint32_t tmo, did;
1280 int rc;
1281
1282 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1283 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
1284 ndlp->nlp_DID, ELS_CMD_FLOGI);
1285
1286 if (!elsiocb)
1287 return 1;
1288
1289 wqe = &elsiocb->wqe;
1290 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
1291 icmd = &elsiocb->iocb;
1292
1293 /* For FLOGI request, remainder of payload is service parameters */
1294 *((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
1295 pcmd += sizeof(uint32_t);
1296 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
1297 sp = (struct serv_parm *) pcmd;
1298
1299 /* Setup CSPs accordingly for Fabric */
1300 sp->cmn.e_d_tov = 0;
1301 sp->cmn.w2.r_a_tov = 0;
1302 sp->cmn.virtual_fabric_support = 0;
1303 sp->cls1.classValid = 0;
1304 if (sp->cmn.fcphLow < FC_PH3)
1305 sp->cmn.fcphLow = FC_PH3;
1306 if (sp->cmn.fcphHigh < FC_PH3)
1307 sp->cmn.fcphHigh = FC_PH3;
1308
1309 /* Determine if switch supports priority tagging */
1310 if (phba->cfg_vmid_priority_tagging) {
1311 sp->cmn.priority_tagging = 1;
1312 /* lpfc_vmid_host_uuid is combination of wwpn and wwnn */
1313 if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0,
1314 sizeof(vport->lpfc_vmid_host_uuid))) {
1315 memcpy(vport->lpfc_vmid_host_uuid, phba->wwpn,
1316 sizeof(phba->wwpn));
1317 memcpy(&vport->lpfc_vmid_host_uuid[8], phba->wwnn,
1318 sizeof(phba->wwnn));
1319 }
1320 }
1321
1322 if (phba->sli_rev == LPFC_SLI_REV4) {
1323 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
1324 LPFC_SLI_INTF_IF_TYPE_0) {
1325 /* FLOGI needs to be 3 for WQE FCFI */
1326 ct = SLI4_CT_FCFI;
1327 bf_set(wqe_ct, &wqe->els_req.wqe_com, ct);
1328
1329 /* Set the fcfi to the fcfi we registered with */
1330 bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com,
1331 phba->fcf.fcfi);
1332 }
1333
1334 /* Can't do SLI4 class2 without support sequence coalescing */
1335 sp->cls2.classValid = 0;
1336 sp->cls2.seqDelivery = 0;
1337 } else {
1338 /* Historical, setting sequential-delivery bit for SLI3 */
1339 sp->cls2.seqDelivery = (sp->cls2.classValid) ? 1 : 0;
1340 sp->cls3.seqDelivery = (sp->cls3.classValid) ? 1 : 0;
1341 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1342 sp->cmn.request_multiple_Nport = 1;
1343 /* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
1344 icmd->ulpCt_h = 1;
1345 icmd->ulpCt_l = 0;
1346 } else {
1347 sp->cmn.request_multiple_Nport = 0;
1348 }
1349
1350 if (phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
1351 icmd->un.elsreq64.myID = 0;
1352 icmd->un.elsreq64.fl = 1;
1353 }
1354 }
1355
1356 tmo = phba->fc_ratov;
1357 phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
1358 lpfc_set_disctmo(vport);
1359 phba->fc_ratov = tmo;
1360
1361 phba->fc_stat.elsXmitFLOGI++;
1362 elsiocb->cmd_cmpl = lpfc_cmpl_els_flogi;
1363
1364 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1365 "Issue FLOGI: opt:x%x",
1366 phba->sli3_options, 0, 0);
1367
1368 elsiocb->ndlp = lpfc_nlp_get(ndlp);
1369 if (!elsiocb->ndlp) {
1370 lpfc_els_free_iocb(phba, elsiocb);
1371 return 1;
1372 }
1373
1374 /* Avoid race with FLOGI completion and hba_flags. */
1375 set_bit(HBA_FLOGI_ISSUED, &phba->hba_flag);
1376 set_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag);
1377
1378 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
1379 if (rc == IOCB_ERROR) {
1380 clear_bit(HBA_FLOGI_ISSUED, &phba->hba_flag);
1381 clear_bit(HBA_FLOGI_OUTSTANDING, &phba->hba_flag);
1382 lpfc_els_free_iocb(phba, elsiocb);
1383 lpfc_nlp_put(ndlp);
1384 return 1;
1385 }
1386
1387 /* Clear external loopback plug detected flag */
1388 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
1389
1390 /* Check for a deferred FLOGI ACC condition */
1391 if (phba->defer_flogi_acc.flag) {
1392 /* lookup ndlp for received FLOGI */
1393 ndlp = lpfc_findnode_did(vport, 0);
1394 if (!ndlp)
1395 return 0;
1396
1397 did = vport->fc_myDID;
1398 vport->fc_myDID = Fabric_DID;
1399
1400 memset(&defer_flogi_acc, 0, sizeof(struct lpfc_iocbq));
1401
1402 if (phba->sli_rev == LPFC_SLI_REV4) {
1403 bf_set(wqe_ctxt_tag,
1404 &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
1405 phba->defer_flogi_acc.rx_id);
1406 bf_set(wqe_rcvoxid,
1407 &defer_flogi_acc.wqe.xmit_els_rsp.wqe_com,
1408 phba->defer_flogi_acc.ox_id);
1409 } else {
1410 icmd = &defer_flogi_acc.iocb;
1411 icmd->ulpContext = phba->defer_flogi_acc.rx_id;
1412 icmd->unsli3.rcvsli3.ox_id =
1413 phba->defer_flogi_acc.ox_id;
1414 }
1415
1416 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1417 "3354 Xmit deferred FLOGI ACC: rx_id: x%x,"
1418 " ox_id: x%x, hba_flag x%lx\n",
1419 phba->defer_flogi_acc.rx_id,
1420 phba->defer_flogi_acc.ox_id, phba->hba_flag);
1421
1422 /* Send deferred FLOGI ACC */
1423 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, &defer_flogi_acc,
1424 ndlp, NULL);
1425
1426 phba->defer_flogi_acc.flag = false;
1427
1428 /* Decrement the held ndlp that was incremented when the
1429 * deferred flogi acc flag was set.
1430 */
1431 if (phba->defer_flogi_acc.ndlp) {
1432 lpfc_nlp_put(phba->defer_flogi_acc.ndlp);
1433 phba->defer_flogi_acc.ndlp = NULL;
1434 }
1435
1436 vport->fc_myDID = did;
1437 }
1438
1439 return 0;
1440 }
1441
1442 /**
1443 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1444 * @phba: pointer to lpfc hba data structure.
1445 *
1446 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
1447 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
1448 * list and issues an abort IOCB commond on each outstanding IOCB that
1449 * contains a active Fabric_DID ndlp. Note that this function is to issue
1450 * the abort IOCB command on all the outstanding IOCBs, thus when this
1451 * function returns, it does not guarantee all the IOCBs are actually aborted.
1452 *
1453 * Return code
1454 * 0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1455 **/
1456 int
lpfc_els_abort_flogi(struct lpfc_hba * phba)1457 lpfc_els_abort_flogi(struct lpfc_hba *phba)
1458 {
1459 struct lpfc_sli_ring *pring;
1460 struct lpfc_iocbq *iocb, *next_iocb;
1461 struct lpfc_nodelist *ndlp;
1462 u32 ulp_command;
1463
1464 /* Abort outstanding I/O on NPort <nlp_DID> */
1465 lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1466 "0201 Abort outstanding I/O on NPort x%x\n",
1467 Fabric_DID);
1468
1469 pring = lpfc_phba_elsring(phba);
1470 if (unlikely(!pring))
1471 return -EIO;
1472
1473 /*
1474 * Check the txcmplq for an iocb that matches the nport the driver is
1475 * searching for.
1476 */
1477 spin_lock_irq(&phba->hbalock);
1478 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1479 ulp_command = get_job_cmnd(phba, iocb);
1480 if (ulp_command == CMD_ELS_REQUEST64_CR) {
1481 ndlp = iocb->ndlp;
1482 if (ndlp && ndlp->nlp_DID == Fabric_DID) {
1483 if (test_bit(FC_PT2PT, &phba->pport->fc_flag) &&
1484 !test_bit(FC_PT2PT_PLOGI,
1485 &phba->pport->fc_flag))
1486 iocb->fabric_cmd_cmpl =
1487 lpfc_ignore_els_cmpl;
1488 lpfc_sli_issue_abort_iotag(phba, pring, iocb,
1489 NULL);
1490 }
1491 }
1492 }
1493 /* Make sure HBA is alive */
1494 lpfc_issue_hb_tmo(phba);
1495
1496 spin_unlock_irq(&phba->hbalock);
1497
1498 return 0;
1499 }
1500
1501 /**
1502 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1503 * @vport: pointer to a host virtual N_Port data structure.
1504 *
1505 * This routine issues an initial Fabric Login (FLOGI) for the @vport
1506 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1507 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1508 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1509 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
1510 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
1511 * @vport.
1512 *
1513 * Return code
1514 * 0 - failed to issue initial flogi for @vport
1515 * 1 - successfully issued initial flogi for @vport
1516 **/
1517 int
lpfc_initial_flogi(struct lpfc_vport * vport)1518 lpfc_initial_flogi(struct lpfc_vport *vport)
1519 {
1520 struct lpfc_nodelist *ndlp;
1521
1522 vport->port_state = LPFC_FLOGI;
1523 lpfc_set_disctmo(vport);
1524
1525 /* First look for the Fabric ndlp */
1526 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1527 if (!ndlp) {
1528 /* Cannot find existing Fabric ndlp, so allocate a new one */
1529 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1530 if (!ndlp)
1531 return 0;
1532 /* Set the node type */
1533 ndlp->nlp_type |= NLP_FABRIC;
1534
1535 /* Put ndlp onto node list */
1536 lpfc_enqueue_node(vport, ndlp);
1537 }
1538
1539 /* Reset the Fabric flag, topology change may have happened */
1540 clear_bit(FC_FABRIC, &vport->fc_flag);
1541 if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
1542 /* A node reference should be retained while registered with a
1543 * transport or dev-loss-evt work is pending.
1544 * Otherwise, decrement node reference to trigger release.
1545 */
1546 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
1547 !test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
1548 lpfc_nlp_put(ndlp);
1549 return 0;
1550 }
1551 return 1;
1552 }
1553
1554 /**
1555 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1556 * @vport: pointer to a host virtual N_Port data structure.
1557 *
1558 * This routine issues an initial Fabric Discover (FDISC) for the @vport
1559 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
1560 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
1561 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
1562 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
1563 * is then invoked with the @vport and the ndlp to perform the FDISC for the
1564 * @vport.
1565 *
1566 * Return code
1567 * 0 - failed to issue initial fdisc for @vport
1568 * 1 - successfully issued initial fdisc for @vport
1569 **/
1570 int
lpfc_initial_fdisc(struct lpfc_vport * vport)1571 lpfc_initial_fdisc(struct lpfc_vport *vport)
1572 {
1573 struct lpfc_nodelist *ndlp;
1574
1575 /* First look for the Fabric ndlp */
1576 ndlp = lpfc_findnode_did(vport, Fabric_DID);
1577 if (!ndlp) {
1578 /* Cannot find existing Fabric ndlp, so allocate a new one */
1579 ndlp = lpfc_nlp_init(vport, Fabric_DID);
1580 if (!ndlp)
1581 return 0;
1582
1583 /* NPIV is only supported in Fabrics. */
1584 ndlp->nlp_type |= NLP_FABRIC;
1585
1586 /* Put ndlp onto node list */
1587 lpfc_enqueue_node(vport, ndlp);
1588 }
1589
1590 if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1591 /* A node reference should be retained while registered with a
1592 * transport or dev-loss-evt work is pending.
1593 * Otherwise, decrement node reference to trigger release.
1594 */
1595 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
1596 !test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
1597 lpfc_nlp_put(ndlp);
1598 return 0;
1599 }
1600 return 1;
1601 }
1602
1603 /**
1604 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1605 * @vport: pointer to a host virtual N_Port data structure.
1606 *
1607 * This routine checks whether there are more remaining Port Logins
1608 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
1609 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
1610 * to issue ELS PLOGIs up to the configured discover threads with the
1611 * @vport (@vport->cfg_discovery_threads). The function also decrement
1612 * the @vport's num_disc_node by 1 if it is not already 0.
1613 **/
1614 void
lpfc_more_plogi(struct lpfc_vport * vport)1615 lpfc_more_plogi(struct lpfc_vport *vport)
1616 {
1617 if (vport->num_disc_nodes)
1618 vport->num_disc_nodes--;
1619
1620 /* Continue discovery with <num_disc_nodes> PLOGIs to go */
1621 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
1622 "0232 Continue discovery with %d PLOGIs to go "
1623 "Data: x%x x%lx x%x\n",
1624 vport->num_disc_nodes,
1625 atomic_read(&vport->fc_plogi_cnt),
1626 vport->fc_flag, vport->port_state);
1627 /* Check to see if there are more PLOGIs to be sent */
1628 if (test_bit(FC_NLP_MORE, &vport->fc_flag))
1629 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
1630 lpfc_els_disc_plogi(vport);
1631
1632 return;
1633 }
1634
1635 /**
1636 * lpfc_plogi_confirm_nport - Confirm plogi wwpn matches stored ndlp
1637 * @phba: pointer to lpfc hba data structure.
1638 * @prsp: pointer to response IOCB payload.
1639 * @ndlp: pointer to a node-list data structure.
1640 *
1641 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
1642 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
1643 * The following cases are considered N_Port confirmed:
1644 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
1645 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
1646 * it does not have WWPN assigned either. If the WWPN is confirmed, the
1647 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
1648 * 1) if there is a node on vport list other than the @ndlp with the same
1649 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
1650 * on that node to release the RPI associated with the node; 2) if there is
1651 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
1652 * into, a new node shall be allocated (or activated). In either case, the
1653 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
1654 * be released and the new_ndlp shall be put on to the vport node list and
1655 * its pointer returned as the confirmed node.
1656 *
1657 * Note that before the @ndlp got "released", the keepDID from not-matching
1658 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
1659 * of the @ndlp. This is because the release of @ndlp is actually to put it
1660 * into an inactive state on the vport node list and the vport node list
1661 * management algorithm does not allow two node with a same DID.
1662 *
1663 * Return code
1664 * pointer to the PLOGI N_Port @ndlp
1665 **/
1666 static struct lpfc_nodelist *
lpfc_plogi_confirm_nport(struct lpfc_hba * phba,uint32_t * prsp,struct lpfc_nodelist * ndlp)1667 lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1668 struct lpfc_nodelist *ndlp)
1669 {
1670 struct lpfc_vport *vport = ndlp->vport;
1671 struct lpfc_nodelist *new_ndlp;
1672 struct serv_parm *sp;
1673 uint8_t name[sizeof(struct lpfc_name)];
1674 uint32_t keepDID = 0;
1675 int rc;
1676 unsigned long keep_nlp_flag = 0, keep_new_nlp_flag = 0;
1677 uint16_t keep_nlp_state;
1678 u32 keep_nlp_fc4_type = 0;
1679 struct lpfc_nvme_rport *keep_nrport = NULL;
1680 unsigned long *active_rrqs_xri_bitmap = NULL;
1681
1682 sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1683 memset(name, 0, sizeof(struct lpfc_name));
1684
1685 /* Now we find out if the NPort we are logging into, matches the WWPN
1686 * we have for that ndlp. If not, we have some work to do.
1687 */
1688 new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1689
1690 /* return immediately if the WWPN matches ndlp */
1691 if (new_ndlp == ndlp)
1692 return ndlp;
1693
1694 if (phba->sli_rev == LPFC_SLI_REV4) {
1695 active_rrqs_xri_bitmap = mempool_alloc(phba->active_rrq_pool,
1696 GFP_KERNEL);
1697 if (active_rrqs_xri_bitmap)
1698 memset(active_rrqs_xri_bitmap, 0,
1699 phba->cfg_rrq_xri_bitmap_sz);
1700 }
1701
1702 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1703 "3178 PLOGI confirm: ndlp x%x x%lx x%x: "
1704 "new_ndlp x%x x%lx x%x\n",
1705 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_fc4_type,
1706 (new_ndlp ? new_ndlp->nlp_DID : 0),
1707 (new_ndlp ? new_ndlp->nlp_flag : 0),
1708 (new_ndlp ? new_ndlp->nlp_fc4_type : 0));
1709
1710 if (!new_ndlp) {
1711 rc = memcmp(&ndlp->nlp_portname, name,
1712 sizeof(struct lpfc_name));
1713 if (!rc) {
1714 if (active_rrqs_xri_bitmap)
1715 mempool_free(active_rrqs_xri_bitmap,
1716 phba->active_rrq_pool);
1717 return ndlp;
1718 }
1719 new_ndlp = lpfc_nlp_init(vport, ndlp->nlp_DID);
1720 if (!new_ndlp) {
1721 if (active_rrqs_xri_bitmap)
1722 mempool_free(active_rrqs_xri_bitmap,
1723 phba->active_rrq_pool);
1724 return ndlp;
1725 }
1726 } else {
1727 if (phba->sli_rev == LPFC_SLI_REV4 &&
1728 active_rrqs_xri_bitmap)
1729 memcpy(active_rrqs_xri_bitmap,
1730 new_ndlp->active_rrqs_xri_bitmap,
1731 phba->cfg_rrq_xri_bitmap_sz);
1732
1733 /*
1734 * Unregister from backend if not done yet. Could have been
1735 * skipped due to ADISC
1736 */
1737 lpfc_nlp_unreg_node(vport, new_ndlp);
1738 }
1739
1740 keepDID = new_ndlp->nlp_DID;
1741
1742 /* At this point in this routine, we know new_ndlp will be
1743 * returned. however, any previous GID_FTs that were done
1744 * would have updated nlp_fc4_type in ndlp, so we must ensure
1745 * new_ndlp has the right value.
1746 */
1747 if (test_bit(FC_FABRIC, &vport->fc_flag)) {
1748 keep_nlp_fc4_type = new_ndlp->nlp_fc4_type;
1749 new_ndlp->nlp_fc4_type = ndlp->nlp_fc4_type;
1750 }
1751
1752 lpfc_unreg_rpi(vport, new_ndlp);
1753 new_ndlp->nlp_DID = ndlp->nlp_DID;
1754 new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1755 if (phba->sli_rev == LPFC_SLI_REV4)
1756 memcpy(new_ndlp->active_rrqs_xri_bitmap,
1757 ndlp->active_rrqs_xri_bitmap,
1758 phba->cfg_rrq_xri_bitmap_sz);
1759
1760 /* Lock both ndlps */
1761 spin_lock_irq(&ndlp->lock);
1762 spin_lock_irq(&new_ndlp->lock);
1763 keep_new_nlp_flag = new_ndlp->nlp_flag;
1764 keep_nlp_flag = ndlp->nlp_flag;
1765 new_ndlp->nlp_flag = ndlp->nlp_flag;
1766
1767 /* if new_ndlp had NLP_UNREG_INP set, keep it */
1768 if (test_bit(NLP_UNREG_INP, &keep_new_nlp_flag))
1769 set_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag);
1770 else
1771 clear_bit(NLP_UNREG_INP, &new_ndlp->nlp_flag);
1772
1773 /* if new_ndlp had NLP_RPI_REGISTERED set, keep it */
1774 if (test_bit(NLP_RPI_REGISTERED, &keep_new_nlp_flag))
1775 set_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag);
1776 else
1777 clear_bit(NLP_RPI_REGISTERED, &new_ndlp->nlp_flag);
1778
1779 /*
1780 * Retain the DROPPED flag. This will take care of the init
1781 * refcount when affecting the state change
1782 */
1783 if (test_bit(NLP_DROPPED, &keep_new_nlp_flag))
1784 set_bit(NLP_DROPPED, &new_ndlp->nlp_flag);
1785 else
1786 clear_bit(NLP_DROPPED, &new_ndlp->nlp_flag);
1787
1788 ndlp->nlp_flag = keep_new_nlp_flag;
1789
1790 /* if ndlp had NLP_UNREG_INP set, keep it */
1791 if (test_bit(NLP_UNREG_INP, &keep_nlp_flag))
1792 set_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
1793 else
1794 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
1795
1796 /* if ndlp had NLP_RPI_REGISTERED set, keep it */
1797 if (test_bit(NLP_RPI_REGISTERED, &keep_nlp_flag))
1798 set_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
1799 else
1800 clear_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag);
1801
1802 /*
1803 * Retain the DROPPED flag. This will take care of the init
1804 * refcount when affecting the state change
1805 */
1806 if (test_bit(NLP_DROPPED, &keep_nlp_flag))
1807 set_bit(NLP_DROPPED, &ndlp->nlp_flag);
1808 else
1809 clear_bit(NLP_DROPPED, &ndlp->nlp_flag);
1810
1811 spin_unlock_irq(&new_ndlp->lock);
1812 spin_unlock_irq(&ndlp->lock);
1813
1814 /* Set nlp_states accordingly */
1815 keep_nlp_state = new_ndlp->nlp_state;
1816 lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1817
1818 /* interchange the nvme remoteport structs */
1819 keep_nrport = new_ndlp->nrport;
1820 new_ndlp->nrport = ndlp->nrport;
1821
1822 /* Move this back to NPR state */
1823 if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
1824 /* The ndlp doesn't have a portname yet, but does have an
1825 * NPort ID. The new_ndlp portname matches the Rport's
1826 * portname. Reinstantiate the new_ndlp and reset the ndlp.
1827 */
1828 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1829 "3179 PLOGI confirm NEW: %x %x\n",
1830 new_ndlp->nlp_DID, keepDID);
1831
1832 /* Two ndlps cannot have the same did on the nodelist.
1833 * The KeepDID and keep_nlp_fc4_type need to be swapped
1834 * because ndlp is inflight with no WWPN.
1835 */
1836 ndlp->nlp_DID = keepDID;
1837 ndlp->nlp_fc4_type = keep_nlp_fc4_type;
1838 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1839 if (phba->sli_rev == LPFC_SLI_REV4 &&
1840 active_rrqs_xri_bitmap)
1841 memcpy(ndlp->active_rrqs_xri_bitmap,
1842 active_rrqs_xri_bitmap,
1843 phba->cfg_rrq_xri_bitmap_sz);
1844
1845 } else {
1846 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1847 "3180 PLOGI confirm SWAP: %x %x\n",
1848 new_ndlp->nlp_DID, keepDID);
1849
1850 lpfc_unreg_rpi(vport, ndlp);
1851
1852 /* The ndlp and new_ndlp both have WWPNs but are swapping
1853 * NPort Ids and attributes.
1854 */
1855 ndlp->nlp_DID = keepDID;
1856 ndlp->nlp_fc4_type = keep_nlp_fc4_type;
1857
1858 if (phba->sli_rev == LPFC_SLI_REV4 &&
1859 active_rrqs_xri_bitmap)
1860 memcpy(ndlp->active_rrqs_xri_bitmap,
1861 active_rrqs_xri_bitmap,
1862 phba->cfg_rrq_xri_bitmap_sz);
1863
1864 /* Since we are switching over to the new_ndlp,
1865 * reset the old ndlp state
1866 */
1867 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
1868 (ndlp->nlp_state == NLP_STE_MAPPED_NODE))
1869 keep_nlp_state = NLP_STE_NPR_NODE;
1870 lpfc_nlp_set_state(vport, ndlp, keep_nlp_state);
1871 ndlp->nrport = keep_nrport;
1872 }
1873
1874 /*
1875 * If ndlp is not associated with any rport we can drop it here else
1876 * let dev_loss_tmo_callbk trigger DEVICE_RM event
1877 */
1878 if (!ndlp->rport && (ndlp->nlp_state == NLP_STE_NPR_NODE))
1879 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
1880
1881 if (phba->sli_rev == LPFC_SLI_REV4 &&
1882 active_rrqs_xri_bitmap)
1883 mempool_free(active_rrqs_xri_bitmap,
1884 phba->active_rrq_pool);
1885
1886 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_NODE,
1887 "3173 PLOGI confirm exit: new_ndlp x%x x%lx x%x\n",
1888 new_ndlp->nlp_DID, new_ndlp->nlp_flag,
1889 new_ndlp->nlp_fc4_type);
1890
1891 return new_ndlp;
1892 }
1893
1894 /**
1895 * lpfc_end_rscn - Check and handle more rscn for a vport
1896 * @vport: pointer to a host virtual N_Port data structure.
1897 *
1898 * This routine checks whether more Registration State Change
1899 * Notifications (RSCNs) came in while the discovery state machine was in
1900 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
1901 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
1902 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
1903 * handling the RSCNs.
1904 **/
1905 void
lpfc_end_rscn(struct lpfc_vport * vport)1906 lpfc_end_rscn(struct lpfc_vport *vport)
1907 {
1908
1909 if (test_bit(FC_RSCN_MODE, &vport->fc_flag)) {
1910 /*
1911 * Check to see if more RSCNs came in while we were
1912 * processing this one.
1913 */
1914 if (vport->fc_rscn_id_cnt ||
1915 test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag))
1916 lpfc_els_handle_rscn(vport);
1917 else
1918 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
1919 }
1920 }
1921
1922 /**
1923 * lpfc_cmpl_els_rrq - Completion handled for els RRQs.
1924 * @phba: pointer to lpfc hba data structure.
1925 * @cmdiocb: pointer to lpfc command iocb data structure.
1926 * @rspiocb: pointer to lpfc response iocb data structure.
1927 *
1928 * This routine will call the clear rrq function to free the rrq and
1929 * clear the xri's bit in the ndlp's xri_bitmap. If the ndlp does not
1930 * exist then the clear_rrq is still called because the rrq needs to
1931 * be freed.
1932 **/
1933
1934 static void
lpfc_cmpl_els_rrq(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)1935 lpfc_cmpl_els_rrq(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
1936 struct lpfc_iocbq *rspiocb)
1937 {
1938 struct lpfc_vport *vport = cmdiocb->vport;
1939 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
1940 struct lpfc_node_rrq *rrq;
1941 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
1942 u32 ulp_word4 = get_job_word4(phba, rspiocb);
1943
1944 /* we pass cmdiocb to state machine which needs rspiocb as well */
1945 rrq = cmdiocb->context_un.rrq;
1946 cmdiocb->rsp_iocb = rspiocb;
1947
1948 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
1949 "RRQ cmpl: status:x%x/x%x did:x%x",
1950 ulp_status, ulp_word4,
1951 get_job_els_rsp64_did(phba, cmdiocb));
1952
1953
1954 /* rrq completes to NPort <nlp_DID> */
1955 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
1956 "2880 RRQ completes to DID x%x "
1957 "Data: x%x x%x x%x x%x x%x\n",
1958 ndlp->nlp_DID, ulp_status, ulp_word4,
1959 get_wqe_tmo(cmdiocb), rrq->xritag, rrq->rxid);
1960
1961 if (ulp_status) {
1962 /* Check for retry */
1963 /* Warn RRQ status Don't print the vport to vport rjts */
1964 if (ulp_status != IOSTAT_LS_RJT ||
1965 (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
1966 ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
1967 (phba)->pport->cfg_log_verbose & LOG_ELS)
1968 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
1969 "2881 RRQ DID:%06X Status:"
1970 "x%x/x%x\n",
1971 ndlp->nlp_DID, ulp_status,
1972 ulp_word4);
1973 }
1974
1975 lpfc_clr_rrq_active(phba, rrq->xritag, rrq);
1976 lpfc_els_free_iocb(phba, cmdiocb);
1977 lpfc_nlp_put(ndlp);
1978 return;
1979 }
1980 /**
1981 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1982 * @phba: pointer to lpfc hba data structure.
1983 * @cmdiocb: pointer to lpfc command iocb data structure.
1984 * @rspiocb: pointer to lpfc response iocb data structure.
1985 *
1986 * This routine is the completion callback function for issuing the Port
1987 * Login (PLOGI) command. For PLOGI completion, there must be an active
1988 * ndlp on the vport node list that matches the remote node ID from the
1989 * PLOGI response IOCB. If such ndlp does not exist, the PLOGI is simply
1990 * ignored and command IOCB released. The PLOGI response IOCB status is
1991 * checked for error conditions. If there is error status reported, PLOGI
1992 * retry shall be attempted by invoking the lpfc_els_retry() routine.
1993 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
1994 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
1995 * (DSM) is set for this PLOGI completion. Finally, it checks whether
1996 * there are additional N_Port nodes with the vport that need to perform
1997 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
1998 * PLOGIs.
1999 **/
2000 static void
lpfc_cmpl_els_plogi(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)2001 lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2002 struct lpfc_iocbq *rspiocb)
2003 {
2004 struct lpfc_vport *vport = cmdiocb->vport;
2005 IOCB_t *irsp;
2006 struct lpfc_nodelist *ndlp, *free_ndlp;
2007 struct lpfc_dmabuf *prsp;
2008 bool disc;
2009 struct serv_parm *sp = NULL;
2010 u32 ulp_status, ulp_word4, did, iotag;
2011 bool release_node = false;
2012
2013 /* we pass cmdiocb to state machine which needs rspiocb as well */
2014 cmdiocb->rsp_iocb = rspiocb;
2015
2016 ulp_status = get_job_ulpstatus(phba, rspiocb);
2017 ulp_word4 = get_job_word4(phba, rspiocb);
2018 did = get_job_els_rsp64_did(phba, cmdiocb);
2019
2020 if (phba->sli_rev == LPFC_SLI_REV4) {
2021 iotag = get_wqe_reqtag(cmdiocb);
2022 } else {
2023 irsp = &rspiocb->iocb;
2024 iotag = irsp->ulpIoTag;
2025 }
2026
2027 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2028 "PLOGI cmpl: status:x%x/x%x did:x%x",
2029 ulp_status, ulp_word4, did);
2030
2031 ndlp = lpfc_findnode_did(vport, did);
2032 if (!ndlp) {
2033 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
2034 "0136 PLOGI completes to NPort x%x "
2035 "with no ndlp. Data: x%x x%x x%x\n",
2036 did, ulp_status, ulp_word4, iotag);
2037 goto out_freeiocb;
2038 }
2039
2040 /* Since ndlp can be freed in the disc state machine, note if this node
2041 * is being used during discovery.
2042 */
2043 disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2044
2045 /* PLOGI completes to NPort <nlp_DID> */
2046 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2047 "0102 PLOGI completes to NPort x%06x "
2048 "IoTag x%x Data: x%x x%x x%x x%x x%x\n",
2049 ndlp->nlp_DID, iotag,
2050 ndlp->nlp_fc4_type,
2051 ulp_status, ulp_word4,
2052 disc, vport->num_disc_nodes);
2053
2054 /* Check to see if link went down during discovery */
2055 if (lpfc_els_chk_latt(vport)) {
2056 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2057 goto out;
2058 }
2059
2060 if (ulp_status) {
2061 /* Check for retry */
2062 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2063 /* ELS command is being retried */
2064 if (disc)
2065 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2066 goto out;
2067 }
2068 /* Warn PLOGI status Don't print the vport to vport rjts */
2069 if (ulp_status != IOSTAT_LS_RJT ||
2070 (((ulp_word4) >> 16 != LSRJT_INVALID_CMD) &&
2071 ((ulp_word4) >> 16 != LSRJT_UNABLE_TPC)) ||
2072 (phba)->pport->cfg_log_verbose & LOG_ELS)
2073 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
2074 "2753 PLOGI DID:%06X "
2075 "Status:x%x/x%x\n",
2076 ndlp->nlp_DID, ulp_status,
2077 ulp_word4);
2078
2079 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2080 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
2081 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2082 NLP_EVT_CMPL_PLOGI);
2083
2084 /* If a PLOGI collision occurred, the node needs to continue
2085 * with the reglogin process.
2086 */
2087 spin_lock_irq(&ndlp->lock);
2088 if ((test_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag) ||
2089 test_bit(NLP_RCV_PLOGI, &ndlp->nlp_flag)) &&
2090 ndlp->nlp_state == NLP_STE_REG_LOGIN_ISSUE) {
2091 spin_unlock_irq(&ndlp->lock);
2092 goto out;
2093 }
2094
2095 /* No PLOGI collision and the node is not registered with the
2096 * scsi or nvme transport. It is no longer an active node. Just
2097 * start the device remove process.
2098 */
2099 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2100 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2101 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
2102 release_node = true;
2103 }
2104 spin_unlock_irq(&ndlp->lock);
2105
2106 if (release_node)
2107 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2108 NLP_EVT_DEVICE_RM);
2109 } else {
2110 /* Good status, call state machine */
2111 prsp = list_get_first(&cmdiocb->cmd_dmabuf->list,
2112 struct lpfc_dmabuf, list);
2113 if (!prsp)
2114 goto out;
2115 if (!lpfc_is_els_acc_rsp(prsp))
2116 goto out;
2117 ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
2118
2119 sp = (struct serv_parm *)((u8 *)prsp->virt +
2120 sizeof(u32));
2121
2122 ndlp->vmid_support = 0;
2123 if ((phba->cfg_vmid_app_header && sp->cmn.app_hdr_support) ||
2124 (phba->cfg_vmid_priority_tagging &&
2125 sp->cmn.priority_tagging)) {
2126 lpfc_printf_log(phba, KERN_DEBUG, LOG_ELS,
2127 "4018 app_hdr_support %d tagging %d DID x%x\n",
2128 sp->cmn.app_hdr_support,
2129 sp->cmn.priority_tagging,
2130 ndlp->nlp_DID);
2131 /* if the dest port supports VMID, mark it in ndlp */
2132 ndlp->vmid_support = 1;
2133 }
2134
2135 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2136 NLP_EVT_CMPL_PLOGI);
2137 }
2138
2139 if (disc && vport->num_disc_nodes) {
2140 /* Check to see if there are more PLOGIs to be sent */
2141 lpfc_more_plogi(vport);
2142
2143 if (vport->num_disc_nodes == 0) {
2144 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
2145
2146 lpfc_can_disctmo(vport);
2147 lpfc_end_rscn(vport);
2148 }
2149 }
2150
2151 out:
2152 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE,
2153 "PLOGI Cmpl PUT: did:x%x refcnt %d",
2154 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2155
2156 out_freeiocb:
2157 /* Release the reference on the original I/O request. */
2158 free_ndlp = cmdiocb->ndlp;
2159
2160 lpfc_els_free_iocb(phba, cmdiocb);
2161 lpfc_nlp_put(free_ndlp);
2162 return;
2163 }
2164
2165 /**
2166 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
2167 * @vport: pointer to a host virtual N_Port data structure.
2168 * @did: destination port identifier.
2169 * @retry: number of retries to the command IOCB.
2170 *
2171 * This routine issues a Port Login (PLOGI) command to a remote N_Port
2172 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
2173 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
2174 * This routine constructs the proper fields of the PLOGI IOCB and invokes
2175 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
2176 *
2177 * Note that the ndlp reference count will be incremented by 1 for holding
2178 * the ndlp and the reference to ndlp will be stored into the ndlp field
2179 * of the IOCB for the completion callback function to the PLOGI ELS command.
2180 *
2181 * Return code
2182 * 0 - Successfully issued a plogi for @vport
2183 * 1 - failed to issue a plogi for @vport
2184 **/
2185 int
lpfc_issue_els_plogi(struct lpfc_vport * vport,uint32_t did,uint8_t retry)2186 lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
2187 {
2188 struct lpfc_hba *phba = vport->phba;
2189 struct serv_parm *sp;
2190 struct lpfc_nodelist *ndlp;
2191 struct lpfc_iocbq *elsiocb;
2192 uint8_t *pcmd;
2193 uint16_t cmdsize;
2194 int ret;
2195
2196 ndlp = lpfc_findnode_did(vport, did);
2197 if (!ndlp)
2198 return 1;
2199
2200 /* Defer the processing of the issue PLOGI until after the
2201 * outstanding UNREG_RPI mbox command completes, unless we
2202 * are going offline. This logic does not apply for Fabric DIDs
2203 */
2204 if ((test_bit(NLP_IGNR_REG_CMPL, &ndlp->nlp_flag) ||
2205 test_bit(NLP_UNREG_INP, &ndlp->nlp_flag)) &&
2206 ((ndlp->nlp_DID & Fabric_DID_MASK) != Fabric_DID_MASK) &&
2207 !test_bit(FC_OFFLINE_MODE, &vport->fc_flag)) {
2208 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2209 "4110 Issue PLOGI x%x deferred "
2210 "on NPort x%x rpi x%x flg x%lx Data:"
2211 " x%px\n",
2212 ndlp->nlp_defer_did, ndlp->nlp_DID,
2213 ndlp->nlp_rpi, ndlp->nlp_flag, ndlp);
2214
2215 /* We can only defer 1st PLOGI */
2216 if (ndlp->nlp_defer_did == NLP_EVT_NOTHING_PENDING)
2217 ndlp->nlp_defer_did = did;
2218 return 0;
2219 }
2220
2221 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
2222 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
2223 ELS_CMD_PLOGI);
2224 if (!elsiocb)
2225 return 1;
2226
2227 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2228
2229 /* For PLOGI request, remainder of payload is service parameters */
2230 *((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
2231 pcmd += sizeof(uint32_t);
2232 memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
2233 sp = (struct serv_parm *) pcmd;
2234
2235 /*
2236 * If we are a N-port connected to a Fabric, fix-up paramm's so logins
2237 * to device on remote loops work.
2238 */
2239 if (test_bit(FC_FABRIC, &vport->fc_flag) &&
2240 !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))
2241 sp->cmn.altBbCredit = 1;
2242
2243 if (sp->cmn.fcphLow < FC_PH_4_3)
2244 sp->cmn.fcphLow = FC_PH_4_3;
2245
2246 if (sp->cmn.fcphHigh < FC_PH3)
2247 sp->cmn.fcphHigh = FC_PH3;
2248
2249 sp->cmn.valid_vendor_ver_level = 0;
2250 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
2251 sp->cmn.bbRcvSizeMsb &= 0xF;
2252
2253 /* Check if the destination port supports VMID */
2254 ndlp->vmid_support = 0;
2255 if (vport->vmid_priority_tagging)
2256 sp->cmn.priority_tagging = 1;
2257 else if (phba->cfg_vmid_app_header &&
2258 bf_get(lpfc_ftr_ashdr, &phba->sli4_hba.sli4_flags))
2259 sp->cmn.app_hdr_support = 1;
2260
2261 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2262 "Issue PLOGI: did:x%x",
2263 did, 0, 0);
2264
2265 /* If our firmware supports this feature, convey that
2266 * information to the target using the vendor specific field.
2267 */
2268 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
2269 sp->cmn.valid_vendor_ver_level = 1;
2270 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
2271 sp->un.vv.flags = cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
2272 }
2273
2274 phba->fc_stat.elsXmitPLOGI++;
2275 elsiocb->cmd_cmpl = lpfc_cmpl_els_plogi;
2276
2277 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2278 "Issue PLOGI: did:x%x refcnt %d",
2279 did, kref_read(&ndlp->kref), 0);
2280 elsiocb->ndlp = lpfc_nlp_get(ndlp);
2281 if (!elsiocb->ndlp) {
2282 lpfc_els_free_iocb(phba, elsiocb);
2283 return 1;
2284 }
2285
2286 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2287 if (ret) {
2288 lpfc_els_free_iocb(phba, elsiocb);
2289 lpfc_nlp_put(ndlp);
2290 return 1;
2291 }
2292
2293 return 0;
2294 }
2295
2296 /**
2297 * lpfc_cmpl_els_prli - Completion callback function for prli
2298 * @phba: pointer to lpfc hba data structure.
2299 * @cmdiocb: pointer to lpfc command iocb data structure.
2300 * @rspiocb: pointer to lpfc response iocb data structure.
2301 *
2302 * This routine is the completion callback function for a Process Login
2303 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
2304 * status. If there is error status reported, PRLI retry shall be attempted
2305 * by invoking the lpfc_els_retry() routine. Otherwise, the state
2306 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
2307 * ndlp to mark the PRLI completion.
2308 **/
2309 static void
lpfc_cmpl_els_prli(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)2310 lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2311 struct lpfc_iocbq *rspiocb)
2312 {
2313 struct lpfc_vport *vport = cmdiocb->vport;
2314 struct lpfc_nodelist *ndlp;
2315 char *mode;
2316 u32 ulp_status;
2317 u32 ulp_word4;
2318 bool release_node = false;
2319
2320 /* we pass cmdiocb to state machine which needs rspiocb as well */
2321 cmdiocb->rsp_iocb = rspiocb;
2322
2323 ndlp = cmdiocb->ndlp;
2324
2325 ulp_status = get_job_ulpstatus(phba, rspiocb);
2326 ulp_word4 = get_job_word4(phba, rspiocb);
2327
2328 clear_bit(NLP_PRLI_SND, &ndlp->nlp_flag);
2329
2330 /* Driver supports multiple FC4 types. Counters matter. */
2331 spin_lock_irq(&ndlp->lock);
2332 vport->fc_prli_sent--;
2333 ndlp->fc4_prli_sent--;
2334 spin_unlock_irq(&ndlp->lock);
2335
2336 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2337 "PRLI cmpl: status:x%x/x%x did:x%x",
2338 ulp_status, ulp_word4,
2339 ndlp->nlp_DID);
2340
2341 /* PRLI completes to NPort <nlp_DID> */
2342 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2343 "0103 PRLI completes to NPort x%06x "
2344 "Data: x%x x%x x%x x%x x%x\n",
2345 ndlp->nlp_DID, ulp_status, ulp_word4,
2346 vport->num_disc_nodes, ndlp->fc4_prli_sent,
2347 ndlp->fc4_xpt_flags);
2348
2349 /* Check to see if link went down during discovery */
2350 if (lpfc_els_chk_latt(vport))
2351 goto out;
2352
2353 if (ulp_status) {
2354 /* Check for retry */
2355 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2356 /* ELS command is being retried */
2357 goto out;
2358 }
2359
2360 /* If we don't send GFT_ID to Fabric, a PRLI error
2361 * could be expected.
2362 */
2363 if (test_bit(FC_FABRIC, &vport->fc_flag) ||
2364 vport->cfg_enable_fc4_type != LPFC_ENABLE_BOTH)
2365 mode = KERN_WARNING;
2366 else
2367 mode = KERN_INFO;
2368
2369 /* Warn PRLI status */
2370 lpfc_printf_vlog(vport, mode, LOG_ELS,
2371 "2754 PRLI DID:%06X Status:x%x/x%x, "
2372 "data: x%x x%x x%lx\n",
2373 ndlp->nlp_DID, ulp_status,
2374 ulp_word4, ndlp->nlp_state,
2375 ndlp->fc4_prli_sent, ndlp->nlp_flag);
2376
2377 /* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2378 if (!lpfc_error_lost_link(vport, ulp_status, ulp_word4))
2379 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2380 NLP_EVT_CMPL_PRLI);
2381
2382 /* The following condition catches an inflight transition
2383 * mismatch typically caused by an RSCN. Skip any
2384 * processing to allow recovery.
2385 */
2386 if ((ndlp->nlp_state >= NLP_STE_PLOGI_ISSUE &&
2387 ndlp->nlp_state <= NLP_STE_REG_LOGIN_ISSUE) ||
2388 (ndlp->nlp_state == NLP_STE_NPR_NODE &&
2389 test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag))) {
2390 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
2391 "2784 PRLI cmpl: Allow Node recovery "
2392 "DID x%06x nstate x%x nflag x%lx\n",
2393 ndlp->nlp_DID, ndlp->nlp_state,
2394 ndlp->nlp_flag);
2395 goto out;
2396 }
2397
2398 /*
2399 * For P2P topology, retain the node so that PLOGI can be
2400 * attempted on it again.
2401 */
2402 if (test_bit(FC_PT2PT, &vport->fc_flag))
2403 goto out;
2404
2405 /* As long as this node is not registered with the SCSI
2406 * or NVMe transport and no other PRLIs are outstanding,
2407 * it is no longer an active node. Otherwise devloss
2408 * handles the final cleanup.
2409 */
2410 spin_lock_irq(&ndlp->lock);
2411 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD)) &&
2412 !ndlp->fc4_prli_sent) {
2413 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2414 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
2415 release_node = true;
2416 }
2417 spin_unlock_irq(&ndlp->lock);
2418
2419 if (release_node)
2420 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2421 NLP_EVT_DEVICE_RM);
2422 } else {
2423 /* Good status, call state machine. However, if another
2424 * PRLI is outstanding, don't call the state machine
2425 * because final disposition to Mapped or Unmapped is
2426 * completed there.
2427 */
2428 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2429 NLP_EVT_CMPL_PRLI);
2430 }
2431
2432 out:
2433 lpfc_els_free_iocb(phba, cmdiocb);
2434 lpfc_nlp_put(ndlp);
2435 return;
2436 }
2437
2438 /**
2439 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
2440 * @vport: pointer to a host virtual N_Port data structure.
2441 * @ndlp: pointer to a node-list data structure.
2442 * @retry: number of retries to the command IOCB.
2443 *
2444 * This routine issues a Process Login (PRLI) ELS command for the
2445 * @vport. The PRLI service parameters are set up in the payload of the
2446 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
2447 * is put to the IOCB completion callback func field before invoking the
2448 * routine lpfc_sli_issue_iocb() to send out PRLI command.
2449 *
2450 * Note that the ndlp reference count will be incremented by 1 for holding the
2451 * ndlp and the reference to ndlp will be stored into the ndlp field of
2452 * the IOCB for the completion callback function to the PRLI ELS command.
2453 *
2454 * Return code
2455 * 0 - successfully issued prli iocb command for @vport
2456 * 1 - failed to issue prli iocb command for @vport
2457 **/
2458 int
lpfc_issue_els_prli(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)2459 lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2460 uint8_t retry)
2461 {
2462 int rc = 0;
2463 struct lpfc_hba *phba = vport->phba;
2464 PRLI *npr;
2465 struct lpfc_nvme_prli *npr_nvme;
2466 struct lpfc_iocbq *elsiocb;
2467 uint8_t *pcmd;
2468 uint16_t cmdsize;
2469 u32 local_nlp_type, elscmd;
2470
2471 /*
2472 * If we are in RSCN mode, the FC4 types supported from a
2473 * previous GFT_ID command may not be accurate. So, if we
2474 * are a NVME Initiator, always look for the possibility of
2475 * the remote NPort beng a NVME Target.
2476 */
2477 if (phba->sli_rev == LPFC_SLI_REV4 &&
2478 test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
2479 vport->nvmei_support)
2480 ndlp->nlp_fc4_type |= NLP_FC4_NVME;
2481 local_nlp_type = ndlp->nlp_fc4_type;
2482
2483 /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp
2484 * fields here before any of them can complete.
2485 */
2486 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
2487 ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
2488 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
2489 clear_bit(NLP_FIRSTBURST, &ndlp->nlp_flag);
2490 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2491 ndlp->nvme_fb_size = 0;
2492
2493 send_next_prli:
2494 if (local_nlp_type & NLP_FC4_FCP) {
2495 /* Payload is 4 + 16 = 20 x14 bytes. */
2496 cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
2497 elscmd = ELS_CMD_PRLI;
2498 } else if (local_nlp_type & NLP_FC4_NVME) {
2499 /* Payload is 4 + 20 = 24 x18 bytes. */
2500 cmdsize = (sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli));
2501 elscmd = ELS_CMD_NVMEPRLI;
2502 } else {
2503 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2504 "3083 Unknown FC_TYPE x%x ndlp x%06x\n",
2505 ndlp->nlp_fc4_type, ndlp->nlp_DID);
2506 return 1;
2507 }
2508
2509 /* SLI3 ports don't support NVME. If this rport is a strict NVME
2510 * FC4 type, implicitly LOGO.
2511 */
2512 if (phba->sli_rev == LPFC_SLI_REV3 &&
2513 ndlp->nlp_fc4_type == NLP_FC4_NVME) {
2514 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2515 "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n",
2516 ndlp->nlp_type);
2517 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM);
2518 return 1;
2519 }
2520
2521 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2522 ndlp->nlp_DID, elscmd);
2523 if (!elsiocb)
2524 return 1;
2525
2526 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2527
2528 /* For PRLI request, remainder of payload is service parameters */
2529 memset(pcmd, 0, cmdsize);
2530
2531 if (local_nlp_type & NLP_FC4_FCP) {
2532 /* Remainder of payload is FCP PRLI parameter page.
2533 * Note: this data structure is defined as
2534 * BE/LE in the structure definition so no
2535 * byte swap call is made.
2536 */
2537 *((uint32_t *)(pcmd)) = ELS_CMD_PRLI;
2538 pcmd += sizeof(uint32_t);
2539 npr = (PRLI *)pcmd;
2540
2541 /*
2542 * If our firmware version is 3.20 or later,
2543 * set the following bits for FC-TAPE support.
2544 */
2545 if (phba->vpd.rev.feaLevelHigh >= 0x02) {
2546 npr->ConfmComplAllowed = 1;
2547 npr->Retry = 1;
2548 npr->TaskRetryIdReq = 1;
2549 }
2550 npr->estabImagePair = 1;
2551 npr->readXferRdyDis = 1;
2552 if (vport->cfg_first_burst_size)
2553 npr->writeXferRdyDis = 1;
2554
2555 /* For FCP support */
2556 npr->prliType = PRLI_FCP_TYPE;
2557 npr->initiatorFunc = 1;
2558 elsiocb->cmd_flag |= LPFC_PRLI_FCP_REQ;
2559
2560 /* Remove FCP type - processed. */
2561 local_nlp_type &= ~NLP_FC4_FCP;
2562 } else if (local_nlp_type & NLP_FC4_NVME) {
2563 /* Remainder of payload is NVME PRLI parameter page.
2564 * This data structure is the newer definition that
2565 * uses bf macros so a byte swap is required.
2566 */
2567 *((uint32_t *)(pcmd)) = ELS_CMD_NVMEPRLI;
2568 pcmd += sizeof(uint32_t);
2569 npr_nvme = (struct lpfc_nvme_prli *)pcmd;
2570 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
2571 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */
2572 if (phba->nsler) {
2573 bf_set(prli_nsler, npr_nvme, 1);
2574 bf_set(prli_conf, npr_nvme, 1);
2575 }
2576
2577 /* Only initiators request first burst. */
2578 if ((phba->cfg_nvme_enable_fb) &&
2579 !phba->nvmet_support)
2580 bf_set(prli_fba, npr_nvme, 1);
2581
2582 if (phba->nvmet_support) {
2583 bf_set(prli_tgt, npr_nvme, 1);
2584 bf_set(prli_disc, npr_nvme, 1);
2585 } else {
2586 bf_set(prli_init, npr_nvme, 1);
2587 bf_set(prli_conf, npr_nvme, 1);
2588 }
2589
2590 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
2591 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
2592 elsiocb->cmd_flag |= LPFC_PRLI_NVME_REQ;
2593
2594 /* Remove NVME type - processed. */
2595 local_nlp_type &= ~NLP_FC4_NVME;
2596 }
2597
2598 phba->fc_stat.elsXmitPRLI++;
2599 elsiocb->cmd_cmpl = lpfc_cmpl_els_prli;
2600
2601 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2602 "Issue PRLI: did:x%x refcnt %d",
2603 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2604 elsiocb->ndlp = lpfc_nlp_get(ndlp);
2605 if (!elsiocb->ndlp) {
2606 lpfc_els_free_iocb(phba, elsiocb);
2607 return 1;
2608 }
2609
2610 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2611 if (rc == IOCB_ERROR) {
2612 lpfc_els_free_iocb(phba, elsiocb);
2613 lpfc_nlp_put(ndlp);
2614 return 1;
2615 }
2616
2617 /* The vport counters are used for lpfc_scan_finished, but
2618 * the ndlp is used to track outstanding PRLIs for different
2619 * FC4 types.
2620 */
2621 set_bit(NLP_PRLI_SND, &ndlp->nlp_flag);
2622 spin_lock_irq(&ndlp->lock);
2623 vport->fc_prli_sent++;
2624 ndlp->fc4_prli_sent++;
2625 spin_unlock_irq(&ndlp->lock);
2626
2627 /* The driver supports 2 FC4 types. Make sure
2628 * a PRLI is issued for all types before exiting.
2629 */
2630 if (phba->sli_rev == LPFC_SLI_REV4 &&
2631 local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME))
2632 goto send_next_prli;
2633 else
2634 return 0;
2635 }
2636
2637 /**
2638 * lpfc_rscn_disc - Perform rscn discovery for a vport
2639 * @vport: pointer to a host virtual N_Port data structure.
2640 *
2641 * This routine performs Registration State Change Notification (RSCN)
2642 * discovery for a @vport. If the @vport's node port recovery count is not
2643 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
2644 * the nodes that need recovery. If none of the PLOGI were needed through
2645 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
2646 * invoked to check and handle possible more RSCN came in during the period
2647 * of processing the current ones.
2648 **/
2649 static void
lpfc_rscn_disc(struct lpfc_vport * vport)2650 lpfc_rscn_disc(struct lpfc_vport *vport)
2651 {
2652 lpfc_can_disctmo(vport);
2653
2654 /* RSCN discovery */
2655 /* go thru NPR nodes and issue ELS PLOGIs */
2656 if (atomic_read(&vport->fc_npr_cnt))
2657 if (lpfc_els_disc_plogi(vport))
2658 return;
2659
2660 lpfc_end_rscn(vport);
2661 }
2662
2663 /**
2664 * lpfc_adisc_done - Complete the adisc phase of discovery
2665 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
2666 *
2667 * This function is called when the final ADISC is completed during discovery.
2668 * This function handles clearing link attention or issuing reg_vpi depending
2669 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
2670 * discovery.
2671 * This function is called with no locks held.
2672 **/
2673 static void
lpfc_adisc_done(struct lpfc_vport * vport)2674 lpfc_adisc_done(struct lpfc_vport *vport)
2675 {
2676 struct lpfc_hba *phba = vport->phba;
2677
2678 /*
2679 * For NPIV, cmpl_reg_vpi will set port_state to READY,
2680 * and continue discovery.
2681 */
2682 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
2683 !test_bit(FC_RSCN_MODE, &vport->fc_flag) &&
2684 (phba->sli_rev < LPFC_SLI_REV4)) {
2685
2686 /*
2687 * If link is down, clear_la and reg_vpi will be done after
2688 * flogi following a link up event
2689 */
2690 if (!lpfc_is_link_up(phba))
2691 return;
2692
2693 /* The ADISCs are complete. Doesn't matter if they
2694 * succeeded or failed because the ADISC completion
2695 * routine guarantees to call the state machine and
2696 * the RPI is either unregistered (failed ADISC response)
2697 * or the RPI is still valid and the node is marked
2698 * mapped for a target. The exchanges should be in the
2699 * correct state. This code is specific to SLI3.
2700 */
2701 lpfc_issue_clear_la(phba, vport);
2702 lpfc_issue_reg_vpi(phba, vport);
2703 return;
2704 }
2705 /*
2706 * For SLI2, we need to set port_state to READY
2707 * and continue discovery.
2708 */
2709 if (vport->port_state < LPFC_VPORT_READY) {
2710 /* If we get here, there is nothing to ADISC */
2711 lpfc_issue_clear_la(phba, vport);
2712 if (!test_bit(FC_ABORT_DISCOVERY, &vport->fc_flag)) {
2713 vport->num_disc_nodes = 0;
2714 /* go thru NPR list, issue ELS PLOGIs */
2715 if (atomic_read(&vport->fc_npr_cnt))
2716 lpfc_els_disc_plogi(vport);
2717 if (!vport->num_disc_nodes) {
2718 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
2719 lpfc_can_disctmo(vport);
2720 lpfc_end_rscn(vport);
2721 }
2722 }
2723 vport->port_state = LPFC_VPORT_READY;
2724 } else
2725 lpfc_rscn_disc(vport);
2726 }
2727
2728 /**
2729 * lpfc_more_adisc - Issue more adisc as needed
2730 * @vport: pointer to a host virtual N_Port data structure.
2731 *
2732 * This routine determines whether there are more ndlps on a @vport
2733 * node list need to have Address Discover (ADISC) issued. If so, it will
2734 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
2735 * remaining nodes which need to have ADISC sent.
2736 **/
2737 void
lpfc_more_adisc(struct lpfc_vport * vport)2738 lpfc_more_adisc(struct lpfc_vport *vport)
2739 {
2740 if (vport->num_disc_nodes)
2741 vport->num_disc_nodes--;
2742 /* Continue discovery with <num_disc_nodes> ADISCs to go */
2743 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
2744 "0210 Continue discovery with %d ADISCs to go "
2745 "Data: x%x x%lx x%x\n",
2746 vport->num_disc_nodes,
2747 atomic_read(&vport->fc_adisc_cnt),
2748 vport->fc_flag, vport->port_state);
2749 /* Check to see if there are more ADISCs to be sent */
2750 if (test_bit(FC_NLP_MORE, &vport->fc_flag)) {
2751 lpfc_set_disctmo(vport);
2752 /* go thru NPR nodes and issue any remaining ELS ADISCs */
2753 lpfc_els_disc_adisc(vport);
2754 }
2755 if (!vport->num_disc_nodes)
2756 lpfc_adisc_done(vport);
2757 return;
2758 }
2759
2760 /**
2761 * lpfc_cmpl_els_adisc - Completion callback function for adisc
2762 * @phba: pointer to lpfc hba data structure.
2763 * @cmdiocb: pointer to lpfc command iocb data structure.
2764 * @rspiocb: pointer to lpfc response iocb data structure.
2765 *
2766 * This routine is the completion function for issuing the Address Discover
2767 * (ADISC) command. It first checks to see whether link went down during
2768 * the discovery process. If so, the node will be marked as node port
2769 * recovery for issuing discover IOCB by the link attention handler and
2770 * exit. Otherwise, the response status is checked. If error was reported
2771 * in the response status, the ADISC command shall be retried by invoking
2772 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
2773 * the response status, the state machine is invoked to set transition
2774 * with respect to NLP_EVT_CMPL_ADISC event.
2775 **/
2776 static void
lpfc_cmpl_els_adisc(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)2777 lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2778 struct lpfc_iocbq *rspiocb)
2779 {
2780 struct lpfc_vport *vport = cmdiocb->vport;
2781 IOCB_t *irsp;
2782 struct lpfc_nodelist *ndlp;
2783 bool disc;
2784 u32 ulp_status, ulp_word4, tmo, iotag;
2785 bool release_node = false;
2786
2787 /* we pass cmdiocb to state machine which needs rspiocb as well */
2788 cmdiocb->rsp_iocb = rspiocb;
2789
2790 ndlp = cmdiocb->ndlp;
2791
2792 ulp_status = get_job_ulpstatus(phba, rspiocb);
2793 ulp_word4 = get_job_word4(phba, rspiocb);
2794
2795 if (phba->sli_rev == LPFC_SLI_REV4) {
2796 tmo = get_wqe_tmo(cmdiocb);
2797 iotag = get_wqe_reqtag(cmdiocb);
2798 } else {
2799 irsp = &rspiocb->iocb;
2800 tmo = irsp->ulpTimeout;
2801 iotag = irsp->ulpIoTag;
2802 }
2803
2804 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2805 "ADISC cmpl: status:x%x/x%x did:x%x",
2806 ulp_status, ulp_word4,
2807 ndlp->nlp_DID);
2808
2809 /* Since ndlp can be freed in the disc state machine, note if this node
2810 * is being used during discovery.
2811 */
2812 disc = test_and_clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2813 clear_bit(NLP_ADISC_SND, &ndlp->nlp_flag);
2814 /* ADISC completes to NPort <nlp_DID> */
2815 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2816 "0104 ADISC completes to NPort x%x "
2817 "IoTag x%x Data: x%x x%x x%x x%x x%x\n",
2818 ndlp->nlp_DID, iotag,
2819 ulp_status, ulp_word4,
2820 tmo, disc, vport->num_disc_nodes);
2821
2822 /* Check to see if link went down during discovery */
2823 if (lpfc_els_chk_latt(vport)) {
2824 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2825 goto out;
2826 }
2827
2828 if (ulp_status) {
2829 /* Check for retry */
2830 if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
2831 /* ELS command is being retried */
2832 if (disc) {
2833 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2834 lpfc_set_disctmo(vport);
2835 }
2836 goto out;
2837 }
2838 /* Warn ADISC status */
2839 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
2840 "2755 ADISC DID:%06X Status:x%x/x%x\n",
2841 ndlp->nlp_DID, ulp_status,
2842 ulp_word4);
2843 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2844 NLP_EVT_CMPL_ADISC);
2845
2846 /* As long as this node is not registered with the SCSI or NVMe
2847 * transport, it is no longer an active node. Otherwise
2848 * devloss handles the final cleanup.
2849 */
2850 spin_lock_irq(&ndlp->lock);
2851 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
2852 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
2853 if (!test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag))
2854 release_node = true;
2855 }
2856 spin_unlock_irq(&ndlp->lock);
2857
2858 if (release_node)
2859 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2860 NLP_EVT_DEVICE_RM);
2861 } else
2862 /* Good status, call state machine */
2863 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2864 NLP_EVT_CMPL_ADISC);
2865
2866 /* Check to see if there are more ADISCs to be sent */
2867 if (disc && vport->num_disc_nodes)
2868 lpfc_more_adisc(vport);
2869 out:
2870 lpfc_els_free_iocb(phba, cmdiocb);
2871 lpfc_nlp_put(ndlp);
2872 return;
2873 }
2874
2875 /**
2876 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
2877 * @vport: pointer to a virtual N_Port data structure.
2878 * @ndlp: pointer to a node-list data structure.
2879 * @retry: number of retries to the command IOCB.
2880 *
2881 * This routine issues an Address Discover (ADISC) for an @ndlp on a
2882 * @vport. It prepares the payload of the ADISC ELS command, updates the
2883 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
2884 * to issue the ADISC ELS command.
2885 *
2886 * Note that the ndlp reference count will be incremented by 1 for holding the
2887 * ndlp and the reference to ndlp will be stored into the ndlp field of
2888 * the IOCB for the completion callback function to the ADISC ELS command.
2889 *
2890 * Return code
2891 * 0 - successfully issued adisc
2892 * 1 - failed to issue adisc
2893 **/
2894 int
lpfc_issue_els_adisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)2895 lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
2896 uint8_t retry)
2897 {
2898 int rc = 0;
2899 struct lpfc_hba *phba = vport->phba;
2900 ADISC *ap;
2901 struct lpfc_iocbq *elsiocb;
2902 uint8_t *pcmd;
2903 uint16_t cmdsize;
2904
2905 cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
2906 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
2907 ndlp->nlp_DID, ELS_CMD_ADISC);
2908 if (!elsiocb)
2909 return 1;
2910
2911 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
2912
2913 /* For ADISC request, remainder of payload is service parameters */
2914 *((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
2915 pcmd += sizeof(uint32_t);
2916
2917 /* Fill in ADISC payload */
2918 ap = (ADISC *) pcmd;
2919 ap->hardAL_PA = phba->fc_pref_ALPA;
2920 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
2921 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
2922 ap->DID = be32_to_cpu(vport->fc_myDID);
2923
2924 phba->fc_stat.elsXmitADISC++;
2925 elsiocb->cmd_cmpl = lpfc_cmpl_els_adisc;
2926 set_bit(NLP_ADISC_SND, &ndlp->nlp_flag);
2927 elsiocb->ndlp = lpfc_nlp_get(ndlp);
2928 if (!elsiocb->ndlp) {
2929 lpfc_els_free_iocb(phba, elsiocb);
2930 goto err;
2931 }
2932
2933 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2934 "Issue ADISC: did:x%x refcnt %d",
2935 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
2936
2937 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2938 if (rc == IOCB_ERROR) {
2939 lpfc_els_free_iocb(phba, elsiocb);
2940 lpfc_nlp_put(ndlp);
2941 goto err;
2942 }
2943
2944 return 0;
2945
2946 err:
2947 clear_bit(NLP_ADISC_SND, &ndlp->nlp_flag);
2948 return 1;
2949 }
2950
2951 /**
2952 * lpfc_cmpl_els_logo - Completion callback function for logo
2953 * @phba: pointer to lpfc hba data structure.
2954 * @cmdiocb: pointer to lpfc command iocb data structure.
2955 * @rspiocb: pointer to lpfc response iocb data structure.
2956 *
2957 * This routine is the completion function for issuing the ELS Logout (LOGO)
2958 * command. If no error status was reported from the LOGO response, the
2959 * state machine of the associated ndlp shall be invoked for transition with
2960 * respect to NLP_EVT_CMPL_LOGO event.
2961 **/
2962 static void
lpfc_cmpl_els_logo(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)2963 lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2964 struct lpfc_iocbq *rspiocb)
2965 {
2966 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
2967 struct lpfc_vport *vport = ndlp->vport;
2968 IOCB_t *irsp;
2969 uint32_t skip_recovery = 0;
2970 int wake_up_waiter = 0;
2971 u32 ulp_status;
2972 u32 ulp_word4;
2973 u32 tmo, iotag;
2974
2975 /* we pass cmdiocb to state machine which needs rspiocb as well */
2976 cmdiocb->rsp_iocb = rspiocb;
2977
2978 ulp_status = get_job_ulpstatus(phba, rspiocb);
2979 ulp_word4 = get_job_word4(phba, rspiocb);
2980
2981 if (phba->sli_rev == LPFC_SLI_REV4) {
2982 tmo = get_wqe_tmo(cmdiocb);
2983 iotag = get_wqe_reqtag(cmdiocb);
2984 } else {
2985 irsp = &rspiocb->iocb;
2986 tmo = irsp->ulpTimeout;
2987 iotag = irsp->ulpIoTag;
2988 }
2989
2990 clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
2991 if (test_and_clear_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags))
2992 wake_up_waiter = 1;
2993
2994 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
2995 "LOGO cmpl: status:x%x/x%x did:x%x",
2996 ulp_status, ulp_word4,
2997 ndlp->nlp_DID);
2998
2999 /* LOGO completes to NPort <nlp_DID> */
3000 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3001 "0105 LOGO completes to NPort x%x "
3002 "IoTag x%x refcnt %d nflags x%lx xflags x%x "
3003 "Data: x%x x%x x%x x%x\n",
3004 ndlp->nlp_DID, iotag,
3005 kref_read(&ndlp->kref), ndlp->nlp_flag,
3006 ndlp->fc4_xpt_flags, ulp_status, ulp_word4,
3007 tmo, vport->num_disc_nodes);
3008
3009 if (lpfc_els_chk_latt(vport)) {
3010 skip_recovery = 1;
3011 goto out;
3012 }
3013
3014 /* The LOGO will not be retried on failure. A LOGO was
3015 * issued to the remote rport and a ACC or RJT or no Answer are
3016 * all acceptable. Note the failure and move forward with
3017 * discovery. The PLOGI will retry.
3018 */
3019 if (ulp_status) {
3020 /* Warn LOGO status */
3021 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
3022 "2756 LOGO, No Retry DID:%06X "
3023 "Status:x%x/x%x\n",
3024 ndlp->nlp_DID, ulp_status,
3025 ulp_word4);
3026
3027 if (lpfc_error_lost_link(vport, ulp_status, ulp_word4))
3028 skip_recovery = 1;
3029 }
3030
3031 /* Call state machine. This will unregister the rpi if needed. */
3032 lpfc_disc_state_machine(vport, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
3033
3034 out:
3035 /* At this point, the LOGO processing is complete. NOTE: For a
3036 * pt2pt topology, we are assuming the NPortID will only change
3037 * on link up processing. For a LOGO / PLOGI initiated by the
3038 * Initiator, we are assuming the NPortID is not going to change.
3039 */
3040
3041 if (wake_up_waiter && ndlp->logo_waitq)
3042 wake_up(ndlp->logo_waitq);
3043 /*
3044 * If the node is a target, the handling attempts to recover the port.
3045 * For any other port type, the rpi is unregistered as an implicit
3046 * LOGO.
3047 */
3048 if (ndlp->nlp_type & (NLP_FCP_TARGET | NLP_NVME_TARGET) &&
3049 skip_recovery == 0) {
3050 lpfc_cancel_retry_delay_tmo(vport, ndlp);
3051 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
3052
3053 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3054 "3187 LOGO completes to NPort x%x: Start "
3055 "Recovery Data: x%x x%x x%x x%x\n",
3056 ndlp->nlp_DID, ulp_status,
3057 ulp_word4, tmo,
3058 vport->num_disc_nodes);
3059
3060 lpfc_els_free_iocb(phba, cmdiocb);
3061 lpfc_nlp_put(ndlp);
3062
3063 lpfc_disc_start(vport);
3064 return;
3065 }
3066
3067 /* Cleanup path for failed REG_RPI handling. If REG_RPI fails, the
3068 * driver sends a LOGO to the rport to cleanup. For fabric and
3069 * initiator ports cleanup the node as long as it the node is not
3070 * register with the transport.
3071 */
3072 if (!(ndlp->fc4_xpt_flags & (SCSI_XPT_REGD | NVME_XPT_REGD))) {
3073 clear_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
3074 lpfc_disc_state_machine(vport, ndlp, cmdiocb,
3075 NLP_EVT_DEVICE_RM);
3076 }
3077
3078 /* Driver is done with the I/O. */
3079 lpfc_els_free_iocb(phba, cmdiocb);
3080 lpfc_nlp_put(ndlp);
3081 }
3082
3083 /**
3084 * lpfc_issue_els_logo - Issue a logo to an node on a vport
3085 * @vport: pointer to a virtual N_Port data structure.
3086 * @ndlp: pointer to a node-list data structure.
3087 * @retry: number of retries to the command IOCB.
3088 *
3089 * This routine constructs and issues an ELS Logout (LOGO) iocb command
3090 * to a remote node, referred by an @ndlp on a @vport. It constructs the
3091 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
3092 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
3093 *
3094 * Note that the ndlp reference count will be incremented by 1 for holding the
3095 * ndlp and the reference to ndlp will be stored into the ndlp field of
3096 * the IOCB for the completion callback function to the LOGO ELS command.
3097 *
3098 * Callers of this routine are expected to unregister the RPI first
3099 *
3100 * Return code
3101 * 0 - successfully issued logo
3102 * 1 - failed to issue logo
3103 **/
3104 int
lpfc_issue_els_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)3105 lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
3106 uint8_t retry)
3107 {
3108 struct lpfc_hba *phba = vport->phba;
3109 struct lpfc_iocbq *elsiocb;
3110 uint8_t *pcmd;
3111 uint16_t cmdsize;
3112 int rc;
3113
3114 if (test_bit(NLP_LOGO_SND, &ndlp->nlp_flag))
3115 return 0;
3116
3117 cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
3118 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3119 ndlp->nlp_DID, ELS_CMD_LOGO);
3120 if (!elsiocb)
3121 return 1;
3122
3123 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3124 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
3125 pcmd += sizeof(uint32_t);
3126
3127 /* Fill in LOGO payload */
3128 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
3129 pcmd += sizeof(uint32_t);
3130 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
3131
3132 phba->fc_stat.elsXmitLOGO++;
3133 elsiocb->cmd_cmpl = lpfc_cmpl_els_logo;
3134 set_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
3135 clear_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
3136 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3137 if (!elsiocb->ndlp) {
3138 lpfc_els_free_iocb(phba, elsiocb);
3139 goto err;
3140 }
3141
3142 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3143 "Issue LOGO: did:x%x refcnt %d",
3144 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3145
3146 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3147 if (rc == IOCB_ERROR) {
3148 lpfc_els_free_iocb(phba, elsiocb);
3149 lpfc_nlp_put(ndlp);
3150 goto err;
3151 }
3152
3153 spin_lock_irq(&ndlp->lock);
3154 ndlp->nlp_prev_state = ndlp->nlp_state;
3155 spin_unlock_irq(&ndlp->lock);
3156 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
3157 return 0;
3158
3159 err:
3160 clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
3161 return 1;
3162 }
3163
3164 /**
3165 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
3166 * @phba: pointer to lpfc hba data structure.
3167 * @cmdiocb: pointer to lpfc command iocb data structure.
3168 * @rspiocb: pointer to lpfc response iocb data structure.
3169 *
3170 * This routine is a generic completion callback function for ELS commands.
3171 * Specifically, it is the callback function which does not need to perform
3172 * any command specific operations. It is currently used by the ELS command
3173 * issuing routines for RSCN, lpfc_issue_els_rscn, and the ELS Fibre Channel
3174 * Address Resolution Protocol Response (FARPR) routine, lpfc_issue_els_farpr().
3175 * Other than certain debug loggings, this callback function simply invokes the
3176 * lpfc_els_chk_latt() routine to check whether link went down during the
3177 * discovery process.
3178 **/
3179 static void
lpfc_cmpl_els_cmd(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)3180 lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3181 struct lpfc_iocbq *rspiocb)
3182 {
3183 struct lpfc_vport *vport = cmdiocb->vport;
3184 struct lpfc_nodelist *free_ndlp;
3185 IOCB_t *irsp;
3186 u32 ulp_status, ulp_word4, tmo, did, iotag;
3187
3188 ulp_status = get_job_ulpstatus(phba, rspiocb);
3189 ulp_word4 = get_job_word4(phba, rspiocb);
3190 did = get_job_els_rsp64_did(phba, cmdiocb);
3191
3192 if (phba->sli_rev == LPFC_SLI_REV4) {
3193 tmo = get_wqe_tmo(cmdiocb);
3194 iotag = get_wqe_reqtag(cmdiocb);
3195 } else {
3196 irsp = &rspiocb->iocb;
3197 tmo = irsp->ulpTimeout;
3198 iotag = irsp->ulpIoTag;
3199 }
3200
3201 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3202 "ELS cmd cmpl: status:x%x/x%x did:x%x",
3203 ulp_status, ulp_word4, did);
3204
3205 /* ELS cmd tag <ulpIoTag> completes */
3206 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
3207 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
3208 iotag, ulp_status, ulp_word4, tmo);
3209
3210 /* Check to see if link went down during discovery */
3211 lpfc_els_chk_latt(vport);
3212
3213 free_ndlp = cmdiocb->ndlp;
3214
3215 lpfc_els_free_iocb(phba, cmdiocb);
3216 lpfc_nlp_put(free_ndlp);
3217 }
3218
3219 /**
3220 * lpfc_reg_fab_ctrl_node - RPI register the fabric controller node.
3221 * @vport: pointer to lpfc_vport data structure.
3222 * @fc_ndlp: pointer to the fabric controller (0xfffffd) node.
3223 *
3224 * This routine registers the rpi assigned to the fabric controller
3225 * NPort_ID (0xfffffd) with the port and moves the node to UNMAPPED
3226 * state triggering a registration with the SCSI transport.
3227 *
3228 * This routine is single out because the fabric controller node
3229 * does not receive a PLOGI. This routine is consumed by the
3230 * SCR and RDF ELS commands. Callers are expected to qualify
3231 * with SLI4 first.
3232 **/
3233 static int
lpfc_reg_fab_ctrl_node(struct lpfc_vport * vport,struct lpfc_nodelist * fc_ndlp)3234 lpfc_reg_fab_ctrl_node(struct lpfc_vport *vport, struct lpfc_nodelist *fc_ndlp)
3235 {
3236 int rc;
3237 struct lpfc_hba *phba = vport->phba;
3238 struct lpfc_nodelist *ns_ndlp;
3239 LPFC_MBOXQ_t *mbox;
3240
3241 if (test_bit(NLP_RPI_REGISTERED, &fc_ndlp->nlp_flag))
3242 return 0;
3243
3244 ns_ndlp = lpfc_findnode_did(vport, NameServer_DID);
3245 if (!ns_ndlp)
3246 return -ENODEV;
3247
3248 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE,
3249 "0935 %s: Reg FC RPI x%x on FC DID x%x NSSte: x%x\n",
3250 __func__, fc_ndlp->nlp_rpi, fc_ndlp->nlp_DID,
3251 ns_ndlp->nlp_state);
3252 if (ns_ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
3253 return -ENODEV;
3254
3255 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3256 if (!mbox) {
3257 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3258 "0936 %s: no memory for reg_login "
3259 "Data: x%x x%x x%lx x%x\n", __func__,
3260 fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
3261 fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
3262 return -ENOMEM;
3263 }
3264 rc = lpfc_reg_rpi(phba, vport->vpi, fc_ndlp->nlp_DID,
3265 (u8 *)&vport->fc_sparam, mbox, fc_ndlp->nlp_rpi);
3266 if (rc) {
3267 rc = -EACCES;
3268 goto out;
3269 }
3270
3271 set_bit(NLP_REG_LOGIN_SEND, &fc_ndlp->nlp_flag);
3272 mbox->mbox_cmpl = lpfc_mbx_cmpl_fc_reg_login;
3273 mbox->ctx_ndlp = lpfc_nlp_get(fc_ndlp);
3274 if (!mbox->ctx_ndlp) {
3275 rc = -ENOMEM;
3276 goto out;
3277 }
3278
3279 mbox->vport = vport;
3280 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
3281 if (rc == MBX_NOT_FINISHED) {
3282 rc = -ENODEV;
3283 lpfc_nlp_put(fc_ndlp);
3284 goto out;
3285 }
3286 /* Success path. Exit. */
3287 lpfc_nlp_set_state(vport, fc_ndlp,
3288 NLP_STE_REG_LOGIN_ISSUE);
3289 return 0;
3290
3291 out:
3292 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
3293 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3294 "0938 %s: failed to format reg_login "
3295 "Data: x%x x%x x%lx x%x\n", __func__,
3296 fc_ndlp->nlp_DID, fc_ndlp->nlp_state,
3297 fc_ndlp->nlp_flag, fc_ndlp->nlp_rpi);
3298 return rc;
3299 }
3300
3301 /**
3302 * lpfc_cmpl_els_disc_cmd - Completion callback function for Discovery ELS cmd
3303 * @phba: pointer to lpfc hba data structure.
3304 * @cmdiocb: pointer to lpfc command iocb data structure.
3305 * @rspiocb: pointer to lpfc response iocb data structure.
3306 *
3307 * This routine is a generic completion callback function for Discovery ELS cmd.
3308 * Currently used by the ELS command issuing routines for the ELS State Change
3309 * Request (SCR), lpfc_issue_els_scr() and the ELS RDF, lpfc_issue_els_rdf().
3310 * These commands will be retried once only for ELS timeout errors.
3311 **/
3312 static void
lpfc_cmpl_els_disc_cmd(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)3313 lpfc_cmpl_els_disc_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3314 struct lpfc_iocbq *rspiocb)
3315 {
3316 struct lpfc_vport *vport = cmdiocb->vport;
3317 IOCB_t *irsp;
3318 struct lpfc_els_rdf_rsp *prdf;
3319 struct lpfc_dmabuf *pcmd, *prsp;
3320 u32 *pdata;
3321 u32 cmd;
3322 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
3323 u32 ulp_status, ulp_word4, tmo, did, iotag;
3324
3325 ulp_status = get_job_ulpstatus(phba, rspiocb);
3326 ulp_word4 = get_job_word4(phba, rspiocb);
3327 did = get_job_els_rsp64_did(phba, cmdiocb);
3328
3329 if (phba->sli_rev == LPFC_SLI_REV4) {
3330 tmo = get_wqe_tmo(cmdiocb);
3331 iotag = get_wqe_reqtag(cmdiocb);
3332 } else {
3333 irsp = &rspiocb->iocb;
3334 tmo = irsp->ulpTimeout;
3335 iotag = irsp->ulpIoTag;
3336 }
3337
3338 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3339 "ELS cmd cmpl: status:x%x/x%x did:x%x",
3340 ulp_status, ulp_word4, did);
3341
3342 /* ELS cmd tag <ulpIoTag> completes */
3343 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3344 "0217 ELS cmd tag x%x completes Data: x%x x%x x%x x%x\n",
3345 iotag, ulp_status, ulp_word4, tmo, cmdiocb->retry);
3346
3347 pcmd = cmdiocb->cmd_dmabuf;
3348 if (!pcmd)
3349 goto out;
3350
3351 pdata = (u32 *)pcmd->virt;
3352 if (!pdata)
3353 goto out;
3354 cmd = *pdata;
3355
3356 /* Only 1 retry for ELS Timeout only */
3357 if (ulp_status == IOSTAT_LOCAL_REJECT &&
3358 ((ulp_word4 & IOERR_PARAM_MASK) ==
3359 IOERR_SEQUENCE_TIMEOUT)) {
3360 cmdiocb->retry++;
3361 if (cmdiocb->retry <= 1) {
3362 switch (cmd) {
3363 case ELS_CMD_SCR:
3364 lpfc_issue_els_scr(vport, cmdiocb->retry);
3365 break;
3366 case ELS_CMD_EDC:
3367 lpfc_issue_els_edc(vport, cmdiocb->retry);
3368 break;
3369 case ELS_CMD_RDF:
3370 lpfc_issue_els_rdf(vport, cmdiocb->retry);
3371 break;
3372 }
3373 goto out;
3374 }
3375 phba->fc_stat.elsRetryExceeded++;
3376 }
3377 if (cmd == ELS_CMD_EDC) {
3378 /* must be called before checking uplStatus and returning */
3379 lpfc_cmpl_els_edc(phba, cmdiocb, rspiocb);
3380 return;
3381 }
3382 if (ulp_status) {
3383 /* ELS discovery cmd completes with error */
3384 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
3385 "4203 ELS cmd x%x error: x%x x%X\n", cmd,
3386 ulp_status, ulp_word4);
3387 goto out;
3388 }
3389
3390 /* The RDF response doesn't have any impact on the running driver
3391 * but the notification descriptors are dumped here for support.
3392 */
3393 if (cmd == ELS_CMD_RDF) {
3394 int i;
3395
3396 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
3397 if (!prsp)
3398 goto out;
3399
3400 prdf = (struct lpfc_els_rdf_rsp *)prsp->virt;
3401 if (!prdf)
3402 goto out;
3403 if (!lpfc_is_els_acc_rsp(prsp))
3404 goto out;
3405
3406 for (i = 0; i < ELS_RDF_REG_TAG_CNT &&
3407 i < be32_to_cpu(prdf->reg_d1.reg_desc.count); i++)
3408 lpfc_printf_vlog(vport, KERN_INFO,
3409 LOG_ELS | LOG_CGN_MGMT,
3410 "4677 Fabric RDF Notification Grant "
3411 "Data: 0x%08x Reg: %x %x\n",
3412 be32_to_cpu(
3413 prdf->reg_d1.desc_tags[i]),
3414 phba->cgn_reg_signal,
3415 phba->cgn_reg_fpin);
3416 }
3417
3418 out:
3419 /* Check to see if link went down during discovery */
3420 lpfc_els_chk_latt(vport);
3421 lpfc_els_free_iocb(phba, cmdiocb);
3422 lpfc_nlp_put(ndlp);
3423 return;
3424 }
3425
3426 /**
3427 * lpfc_issue_els_scr - Issue a scr to an node on a vport
3428 * @vport: pointer to a host virtual N_Port data structure.
3429 * @retry: retry counter for the command IOCB.
3430 *
3431 * This routine issues a State Change Request (SCR) to a fabric node
3432 * on a @vport. The remote node is Fabric Controller (0xfffffd). It
3433 * first search the @vport node list to find the matching ndlp. If no such
3434 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
3435 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
3436 * routine is invoked to send the SCR IOCB.
3437 *
3438 * Note that the ndlp reference count will be incremented by 1 for holding the
3439 * ndlp and the reference to ndlp will be stored into the ndlp field of
3440 * the IOCB for the completion callback function to the SCR ELS command.
3441 *
3442 * Return code
3443 * 0 - Successfully issued scr command
3444 * 1 - Failed to issue scr command
3445 **/
3446 int
lpfc_issue_els_scr(struct lpfc_vport * vport,uint8_t retry)3447 lpfc_issue_els_scr(struct lpfc_vport *vport, uint8_t retry)
3448 {
3449 int rc = 0;
3450 struct lpfc_hba *phba = vport->phba;
3451 struct lpfc_iocbq *elsiocb;
3452 uint8_t *pcmd;
3453 uint16_t cmdsize;
3454 struct lpfc_nodelist *ndlp;
3455
3456 cmdsize = (sizeof(uint32_t) + sizeof(SCR));
3457
3458 ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3459 if (!ndlp) {
3460 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3461 if (!ndlp)
3462 return 1;
3463 lpfc_enqueue_node(vport, ndlp);
3464 }
3465
3466 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3467 ndlp->nlp_DID, ELS_CMD_SCR);
3468 if (!elsiocb)
3469 return 1;
3470
3471 if (phba->sli_rev == LPFC_SLI_REV4) {
3472 rc = lpfc_reg_fab_ctrl_node(vport, ndlp);
3473 if (rc) {
3474 lpfc_els_free_iocb(phba, elsiocb);
3475 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
3476 "0937 %s: Failed to reg fc node, rc %d\n",
3477 __func__, rc);
3478 return 1;
3479 }
3480 }
3481 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3482
3483 *((uint32_t *) (pcmd)) = ELS_CMD_SCR;
3484 pcmd += sizeof(uint32_t);
3485
3486 /* For SCR, remainder of payload is SCR parameter page */
3487 memset(pcmd, 0, sizeof(SCR));
3488 ((SCR *) pcmd)->Function = SCR_FUNC_FULL;
3489
3490 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3491 "Issue SCR: did:x%x",
3492 ndlp->nlp_DID, 0, 0);
3493
3494 phba->fc_stat.elsXmitSCR++;
3495 elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
3496 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3497 if (!elsiocb->ndlp) {
3498 lpfc_els_free_iocb(phba, elsiocb);
3499 return 1;
3500 }
3501
3502 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3503 "Issue SCR: did:x%x refcnt %d",
3504 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3505
3506 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3507 if (rc == IOCB_ERROR) {
3508 lpfc_els_free_iocb(phba, elsiocb);
3509 lpfc_nlp_put(ndlp);
3510 return 1;
3511 }
3512
3513 return 0;
3514 }
3515
3516 /**
3517 * lpfc_issue_els_rscn - Issue an RSCN to the Fabric Controller (Fabric)
3518 * or the other nport (pt2pt).
3519 * @vport: pointer to a host virtual N_Port data structure.
3520 * @retry: number of retries to the command IOCB.
3521 *
3522 * This routine issues a RSCN to the Fabric Controller (DID 0xFFFFFD)
3523 * when connected to a fabric, or to the remote port when connected
3524 * in point-to-point mode. When sent to the Fabric Controller, it will
3525 * replay the RSCN to registered recipients.
3526 *
3527 * Note that the ndlp reference count will be incremented by 1 for holding the
3528 * ndlp and the reference to ndlp will be stored into the ndlp field of
3529 * the IOCB for the completion callback function to the RSCN ELS command.
3530 *
3531 * Return code
3532 * 0 - Successfully issued RSCN command
3533 * 1 - Failed to issue RSCN command
3534 **/
3535 int
lpfc_issue_els_rscn(struct lpfc_vport * vport,uint8_t retry)3536 lpfc_issue_els_rscn(struct lpfc_vport *vport, uint8_t retry)
3537 {
3538 int rc = 0;
3539 struct lpfc_hba *phba = vport->phba;
3540 struct lpfc_iocbq *elsiocb;
3541 struct lpfc_nodelist *ndlp;
3542 struct {
3543 struct fc_els_rscn rscn;
3544 struct fc_els_rscn_page portid;
3545 } *event;
3546 uint32_t nportid;
3547 uint16_t cmdsize = sizeof(*event);
3548
3549 /* Not supported for private loop */
3550 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP &&
3551 !test_bit(FC_PUBLIC_LOOP, &vport->fc_flag))
3552 return 1;
3553
3554 if (test_bit(FC_PT2PT, &vport->fc_flag)) {
3555 /* find any mapped nport - that would be the other nport */
3556 ndlp = lpfc_findnode_mapped(vport);
3557 if (!ndlp)
3558 return 1;
3559 } else {
3560 nportid = FC_FID_FCTRL;
3561 /* find the fabric controller node */
3562 ndlp = lpfc_findnode_did(vport, nportid);
3563 if (!ndlp) {
3564 /* if one didn't exist, make one */
3565 ndlp = lpfc_nlp_init(vport, nportid);
3566 if (!ndlp)
3567 return 1;
3568 lpfc_enqueue_node(vport, ndlp);
3569 }
3570 }
3571
3572 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3573 ndlp->nlp_DID, ELS_CMD_RSCN_XMT);
3574
3575 if (!elsiocb)
3576 return 1;
3577
3578 event = elsiocb->cmd_dmabuf->virt;
3579
3580 event->rscn.rscn_cmd = ELS_RSCN;
3581 event->rscn.rscn_page_len = sizeof(struct fc_els_rscn_page);
3582 event->rscn.rscn_plen = cpu_to_be16(cmdsize);
3583
3584 nportid = vport->fc_myDID;
3585 /* appears that page flags must be 0 for fabric to broadcast RSCN */
3586 event->portid.rscn_page_flags = 0;
3587 event->portid.rscn_fid[0] = (nportid & 0x00FF0000) >> 16;
3588 event->portid.rscn_fid[1] = (nportid & 0x0000FF00) >> 8;
3589 event->portid.rscn_fid[2] = nportid & 0x000000FF;
3590
3591 phba->fc_stat.elsXmitRSCN++;
3592 elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
3593 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3594 if (!elsiocb->ndlp) {
3595 lpfc_els_free_iocb(phba, elsiocb);
3596 return 1;
3597 }
3598
3599 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3600 "Issue RSCN: did:x%x",
3601 ndlp->nlp_DID, 0, 0);
3602
3603 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3604 if (rc == IOCB_ERROR) {
3605 lpfc_els_free_iocb(phba, elsiocb);
3606 lpfc_nlp_put(ndlp);
3607 return 1;
3608 }
3609
3610 return 0;
3611 }
3612
3613 /**
3614 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
3615 * @vport: pointer to a host virtual N_Port data structure.
3616 * @nportid: N_Port identifier to the remote node.
3617 * @retry: number of retries to the command IOCB.
3618 *
3619 * This routine issues a Fibre Channel Address Resolution Response
3620 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
3621 * is passed into the function. It first search the @vport node list to find
3622 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
3623 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
3624 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
3625 *
3626 * Note that the ndlp reference count will be incremented by 1 for holding the
3627 * ndlp and the reference to ndlp will be stored into the ndlp field of
3628 * the IOCB for the completion callback function to the FARPR ELS command.
3629 *
3630 * Return code
3631 * 0 - Successfully issued farpr command
3632 * 1 - Failed to issue farpr command
3633 **/
3634 static int
lpfc_issue_els_farpr(struct lpfc_vport * vport,uint32_t nportid,uint8_t retry)3635 lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
3636 {
3637 int rc = 0;
3638 struct lpfc_hba *phba = vport->phba;
3639 struct lpfc_iocbq *elsiocb;
3640 FARP *fp;
3641 uint8_t *pcmd;
3642 uint32_t *lp;
3643 uint16_t cmdsize;
3644 struct lpfc_nodelist *ondlp;
3645 struct lpfc_nodelist *ndlp;
3646
3647 cmdsize = (sizeof(uint32_t) + sizeof(FARP));
3648
3649 ndlp = lpfc_findnode_did(vport, nportid);
3650 if (!ndlp) {
3651 ndlp = lpfc_nlp_init(vport, nportid);
3652 if (!ndlp)
3653 return 1;
3654 lpfc_enqueue_node(vport, ndlp);
3655 }
3656
3657 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3658 ndlp->nlp_DID, ELS_CMD_FARPR);
3659 if (!elsiocb)
3660 return 1;
3661
3662 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
3663
3664 *((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
3665 pcmd += sizeof(uint32_t);
3666
3667 /* Fill in FARPR payload */
3668 fp = (FARP *) (pcmd);
3669 memset(fp, 0, sizeof(FARP));
3670 lp = (uint32_t *) pcmd;
3671 *lp++ = be32_to_cpu(nportid);
3672 *lp++ = be32_to_cpu(vport->fc_myDID);
3673 fp->Rflags = 0;
3674 fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);
3675
3676 memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
3677 memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
3678 ondlp = lpfc_findnode_did(vport, nportid);
3679 if (ondlp) {
3680 memcpy(&fp->OportName, &ondlp->nlp_portname,
3681 sizeof(struct lpfc_name));
3682 memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
3683 sizeof(struct lpfc_name));
3684 }
3685
3686 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3687 "Issue FARPR: did:x%x",
3688 ndlp->nlp_DID, 0, 0);
3689
3690 phba->fc_stat.elsXmitFARPR++;
3691 elsiocb->cmd_cmpl = lpfc_cmpl_els_cmd;
3692 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3693 if (!elsiocb->ndlp) {
3694 lpfc_els_free_iocb(phba, elsiocb);
3695 return 1;
3696 }
3697
3698 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3699 if (rc == IOCB_ERROR) {
3700 /* The additional lpfc_nlp_put will cause the following
3701 * lpfc_els_free_iocb routine to trigger the release of
3702 * the node.
3703 */
3704 lpfc_els_free_iocb(phba, elsiocb);
3705 lpfc_nlp_put(ndlp);
3706 return 1;
3707 }
3708 /* This will cause the callback-function lpfc_cmpl_els_cmd to
3709 * trigger the release of the node.
3710 */
3711 /* Don't release reference count as RDF is likely outstanding */
3712 return 0;
3713 }
3714
3715 /**
3716 * lpfc_issue_els_rdf - Register for diagnostic functions from the fabric.
3717 * @vport: pointer to a host virtual N_Port data structure.
3718 * @retry: retry counter for the command IOCB.
3719 *
3720 * This routine issues an ELS RDF to the Fabric Controller to register
3721 * for diagnostic functions.
3722 *
3723 * Note that the ndlp reference count will be incremented by 1 for holding the
3724 * ndlp and the reference to ndlp will be stored into the ndlp field of
3725 * the IOCB for the completion callback function to the RDF ELS command.
3726 *
3727 * Return code
3728 * 0 - Successfully issued rdf command
3729 * 1 - Failed to issue rdf command
3730 **/
3731 int
lpfc_issue_els_rdf(struct lpfc_vport * vport,uint8_t retry)3732 lpfc_issue_els_rdf(struct lpfc_vport *vport, uint8_t retry)
3733 {
3734 struct lpfc_hba *phba = vport->phba;
3735 struct lpfc_iocbq *elsiocb;
3736 struct lpfc_els_rdf_req *prdf;
3737 struct lpfc_nodelist *ndlp;
3738 uint16_t cmdsize;
3739 int rc;
3740
3741 cmdsize = sizeof(*prdf);
3742
3743 ndlp = lpfc_findnode_did(vport, Fabric_Cntl_DID);
3744 if (!ndlp) {
3745 ndlp = lpfc_nlp_init(vport, Fabric_Cntl_DID);
3746 if (!ndlp)
3747 return -ENODEV;
3748 lpfc_enqueue_node(vport, ndlp);
3749 }
3750
3751 /* RDF ELS is not required on an NPIV VN_Port. */
3752 if (vport->port_type == LPFC_NPIV_PORT)
3753 return -EACCES;
3754
3755 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
3756 ndlp->nlp_DID, ELS_CMD_RDF);
3757 if (!elsiocb)
3758 return -ENOMEM;
3759
3760 /* Configure the payload for the supported FPIN events. */
3761 prdf = (struct lpfc_els_rdf_req *)elsiocb->cmd_dmabuf->virt;
3762 memset(prdf, 0, cmdsize);
3763 prdf->rdf.fpin_cmd = ELS_RDF;
3764 prdf->rdf.desc_len = cpu_to_be32(sizeof(struct lpfc_els_rdf_req) -
3765 sizeof(struct fc_els_rdf));
3766 prdf->reg_d1.reg_desc.desc_tag = cpu_to_be32(ELS_DTAG_FPIN_REGISTER);
3767 prdf->reg_d1.reg_desc.desc_len = cpu_to_be32(
3768 FC_TLV_DESC_LENGTH_FROM_SZ(prdf->reg_d1));
3769 prdf->reg_d1.reg_desc.count = cpu_to_be32(ELS_RDF_REG_TAG_CNT);
3770 prdf->reg_d1.desc_tags[0] = cpu_to_be32(ELS_DTAG_LNK_INTEGRITY);
3771 prdf->reg_d1.desc_tags[1] = cpu_to_be32(ELS_DTAG_DELIVERY);
3772 prdf->reg_d1.desc_tags[2] = cpu_to_be32(ELS_DTAG_PEER_CONGEST);
3773 prdf->reg_d1.desc_tags[3] = cpu_to_be32(ELS_DTAG_CONGESTION);
3774
3775 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3776 "6444 Xmit RDF to remote NPORT x%x Reg: %x %x\n",
3777 ndlp->nlp_DID, phba->cgn_reg_signal,
3778 phba->cgn_reg_fpin);
3779
3780 phba->cgn_fpin_frequency = LPFC_FPIN_INIT_FREQ;
3781 elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
3782 elsiocb->ndlp = lpfc_nlp_get(ndlp);
3783 if (!elsiocb->ndlp) {
3784 lpfc_els_free_iocb(phba, elsiocb);
3785 return -EIO;
3786 }
3787
3788 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
3789 "Issue RDF: did:x%x refcnt %d",
3790 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
3791
3792 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3793 if (rc == IOCB_ERROR) {
3794 lpfc_els_free_iocb(phba, elsiocb);
3795 lpfc_nlp_put(ndlp);
3796 return -EIO;
3797 }
3798 return 0;
3799 }
3800
3801 /**
3802 * lpfc_els_rcv_rdf - Receive RDF ELS request from the fabric.
3803 * @vport: pointer to a host virtual N_Port data structure.
3804 * @cmdiocb: pointer to lpfc command iocb data structure.
3805 * @ndlp: pointer to a node-list data structure.
3806 *
3807 * A received RDF implies a possible change to fabric supported diagnostic
3808 * functions. This routine sends LS_ACC and then has the Nx_Port issue a new
3809 * RDF request to reregister for supported diagnostic functions.
3810 *
3811 * Return code
3812 * 0 - Success
3813 * -EIO - Failed to process received RDF
3814 **/
3815 static int
lpfc_els_rcv_rdf(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)3816 lpfc_els_rcv_rdf(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
3817 struct lpfc_nodelist *ndlp)
3818 {
3819 /* Send LS_ACC */
3820 if (lpfc_els_rsp_acc(vport, ELS_CMD_RDF, cmdiocb, ndlp, NULL)) {
3821 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3822 "1623 Failed to RDF_ACC from x%x for x%x\n",
3823 ndlp->nlp_DID, vport->fc_myDID);
3824 return -EIO;
3825 }
3826
3827 /* Issue new RDF for reregistering */
3828 if (lpfc_issue_els_rdf(vport, 0)) {
3829 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3830 "2623 Failed to re register RDF for x%x\n",
3831 vport->fc_myDID);
3832 return -EIO;
3833 }
3834
3835 return 0;
3836 }
3837
3838 /**
3839 * lpfc_least_capable_settings - helper function for EDC rsp processing
3840 * @phba: pointer to lpfc hba data structure.
3841 * @pcgd: pointer to congestion detection descriptor in EDC rsp.
3842 *
3843 * This helper routine determines the least capable setting for
3844 * congestion signals, signal freq, including scale, from the
3845 * congestion detection descriptor in the EDC rsp. The routine
3846 * sets @phba values in preparation for a set_featues mailbox.
3847 **/
3848 static void
lpfc_least_capable_settings(struct lpfc_hba * phba,struct fc_diag_cg_sig_desc * pcgd)3849 lpfc_least_capable_settings(struct lpfc_hba *phba,
3850 struct fc_diag_cg_sig_desc *pcgd)
3851 {
3852 u32 rsp_sig_cap = 0, drv_sig_cap = 0;
3853 u32 rsp_sig_freq_cyc = 0, rsp_sig_freq_scale = 0;
3854
3855 /* Get rsp signal and frequency capabilities. */
3856 rsp_sig_cap = be32_to_cpu(pcgd->xmt_signal_capability);
3857 rsp_sig_freq_cyc = be16_to_cpu(pcgd->xmt_signal_frequency.count);
3858 rsp_sig_freq_scale = be16_to_cpu(pcgd->xmt_signal_frequency.units);
3859
3860 /* If the Fport does not support signals. Set FPIN only */
3861 if (rsp_sig_cap == EDC_CG_SIG_NOTSUPPORTED)
3862 goto out_no_support;
3863
3864 /* Apply the xmt scale to the xmt cycle to get the correct frequency.
3865 * Adapter default is 100 millisSeconds. Convert all xmt cycle values
3866 * to milliSeconds.
3867 */
3868 switch (rsp_sig_freq_scale) {
3869 case EDC_CG_SIGFREQ_SEC:
3870 rsp_sig_freq_cyc *= MSEC_PER_SEC;
3871 break;
3872 case EDC_CG_SIGFREQ_MSEC:
3873 rsp_sig_freq_cyc = 1;
3874 break;
3875 default:
3876 goto out_no_support;
3877 }
3878
3879 /* Convenient shorthand. */
3880 drv_sig_cap = phba->cgn_reg_signal;
3881
3882 /* Choose the least capable frequency. */
3883 if (rsp_sig_freq_cyc > phba->cgn_sig_freq)
3884 phba->cgn_sig_freq = rsp_sig_freq_cyc;
3885
3886 /* Should be some common signals support. Settle on least capable
3887 * signal and adjust FPIN values. Initialize defaults to ease the
3888 * decision.
3889 */
3890 phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
3891 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
3892 if (rsp_sig_cap == EDC_CG_SIG_WARN_ONLY &&
3893 (drv_sig_cap == EDC_CG_SIG_WARN_ONLY ||
3894 drv_sig_cap == EDC_CG_SIG_WARN_ALARM)) {
3895 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
3896 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
3897 }
3898 if (rsp_sig_cap == EDC_CG_SIG_WARN_ALARM) {
3899 if (drv_sig_cap == EDC_CG_SIG_WARN_ALARM) {
3900 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ALARM;
3901 phba->cgn_reg_fpin = LPFC_CGN_FPIN_NONE;
3902 }
3903 if (drv_sig_cap == EDC_CG_SIG_WARN_ONLY) {
3904 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
3905 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
3906 }
3907 }
3908
3909 /* We are NOT recording signal frequency in congestion info buffer */
3910 return;
3911
3912 out_no_support:
3913 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
3914 phba->cgn_sig_freq = 0;
3915 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
3916 }
3917
3918 DECLARE_ENUM2STR_LOOKUP(lpfc_get_tlv_dtag_nm, fc_ls_tlv_dtag,
3919 FC_LS_TLV_DTAG_INIT);
3920
3921 /**
3922 * lpfc_cmpl_els_edc - Completion callback function for EDC
3923 * @phba: pointer to lpfc hba data structure.
3924 * @cmdiocb: pointer to lpfc command iocb data structure.
3925 * @rspiocb: pointer to lpfc response iocb data structure.
3926 *
3927 * This routine is the completion callback function for issuing the Exchange
3928 * Diagnostic Capabilities (EDC) command. The driver issues an EDC to
3929 * notify the FPort of its Congestion and Link Fault capabilities. This
3930 * routine parses the FPort's response and decides on the least common
3931 * values applicable to both FPort and NPort for Warnings and Alarms that
3932 * are communicated via hardware signals.
3933 **/
3934 static void
lpfc_cmpl_els_edc(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)3935 lpfc_cmpl_els_edc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3936 struct lpfc_iocbq *rspiocb)
3937 {
3938 IOCB_t *irsp_iocb;
3939 struct fc_els_edc_resp *edc_rsp;
3940 struct fc_tlv_desc *tlv;
3941 struct fc_diag_cg_sig_desc *pcgd;
3942 struct fc_diag_lnkflt_desc *plnkflt;
3943 struct lpfc_dmabuf *pcmd, *prsp;
3944 const char *dtag_nm;
3945 u32 *pdata, dtag;
3946 int desc_cnt = 0, bytes_remain;
3947 bool rcv_cap_desc = false;
3948 struct lpfc_nodelist *ndlp;
3949 u32 ulp_status, ulp_word4, tmo, did, iotag;
3950
3951 ndlp = cmdiocb->ndlp;
3952
3953 ulp_status = get_job_ulpstatus(phba, rspiocb);
3954 ulp_word4 = get_job_word4(phba, rspiocb);
3955 did = get_job_els_rsp64_did(phba, rspiocb);
3956
3957 if (phba->sli_rev == LPFC_SLI_REV4) {
3958 tmo = get_wqe_tmo(rspiocb);
3959 iotag = get_wqe_reqtag(rspiocb);
3960 } else {
3961 irsp_iocb = &rspiocb->iocb;
3962 tmo = irsp_iocb->ulpTimeout;
3963 iotag = irsp_iocb->ulpIoTag;
3964 }
3965
3966 lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
3967 "EDC cmpl: status:x%x/x%x did:x%x",
3968 ulp_status, ulp_word4, did);
3969
3970 /* ELS cmd tag <ulpIoTag> completes */
3971 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
3972 "4201 EDC cmd tag x%x completes Data: x%x x%x x%x\n",
3973 iotag, ulp_status, ulp_word4, tmo);
3974
3975 pcmd = cmdiocb->cmd_dmabuf;
3976 if (!pcmd)
3977 goto out;
3978
3979 pdata = (u32 *)pcmd->virt;
3980 if (!pdata)
3981 goto out;
3982
3983 /* Need to clear signal values, send features MB and RDF with FPIN. */
3984 if (ulp_status)
3985 goto out;
3986
3987 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
3988 if (!prsp)
3989 goto out;
3990
3991 edc_rsp = prsp->virt;
3992 if (!edc_rsp)
3993 goto out;
3994
3995 /* ELS cmd tag <ulpIoTag> completes */
3996 lpfc_printf_log(phba, KERN_INFO,
3997 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
3998 "4676 Fabric EDC Rsp: "
3999 "0x%02x, 0x%08x\n",
4000 edc_rsp->acc_hdr.la_cmd,
4001 be32_to_cpu(edc_rsp->desc_list_len));
4002
4003 if (!lpfc_is_els_acc_rsp(prsp))
4004 goto out;
4005
4006 /*
4007 * Payload length in bytes is the response descriptor list
4008 * length minus the 12 bytes of Link Service Request
4009 * Information descriptor in the reply.
4010 */
4011 bytes_remain = be32_to_cpu(edc_rsp->desc_list_len) -
4012 sizeof(struct fc_els_lsri_desc);
4013 if (bytes_remain <= 0)
4014 goto out;
4015
4016 tlv = edc_rsp->desc;
4017
4018 /*
4019 * cycle through EDC diagnostic descriptors to find the
4020 * congestion signaling capability descriptor
4021 */
4022 while (bytes_remain) {
4023 if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
4024 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
4025 "6461 Truncated TLV hdr on "
4026 "Diagnostic descriptor[%d]\n",
4027 desc_cnt);
4028 goto out;
4029 }
4030
4031 dtag = be32_to_cpu(tlv->desc_tag);
4032 switch (dtag) {
4033 case ELS_DTAG_LNK_FAULT_CAP:
4034 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
4035 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
4036 sizeof(struct fc_diag_lnkflt_desc)) {
4037 lpfc_printf_log(phba, KERN_WARNING,
4038 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
4039 "6462 Truncated Link Fault Diagnostic "
4040 "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
4041 desc_cnt, bytes_remain,
4042 FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
4043 sizeof(struct fc_diag_lnkflt_desc));
4044 goto out;
4045 }
4046 plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
4047 lpfc_printf_log(phba, KERN_INFO,
4048 LOG_ELS | LOG_LDS_EVENT,
4049 "4617 Link Fault Desc Data: 0x%08x 0x%08x "
4050 "0x%08x 0x%08x 0x%08x\n",
4051 be32_to_cpu(plnkflt->desc_tag),
4052 be32_to_cpu(plnkflt->desc_len),
4053 be32_to_cpu(
4054 plnkflt->degrade_activate_threshold),
4055 be32_to_cpu(
4056 plnkflt->degrade_deactivate_threshold),
4057 be32_to_cpu(plnkflt->fec_degrade_interval));
4058 break;
4059 case ELS_DTAG_CG_SIGNAL_CAP:
4060 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
4061 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
4062 sizeof(struct fc_diag_cg_sig_desc)) {
4063 lpfc_printf_log(
4064 phba, KERN_WARNING, LOG_CGN_MGMT,
4065 "6463 Truncated Cgn Signal Diagnostic "
4066 "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
4067 desc_cnt, bytes_remain,
4068 FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
4069 sizeof(struct fc_diag_cg_sig_desc));
4070 goto out;
4071 }
4072
4073 pcgd = (struct fc_diag_cg_sig_desc *)tlv;
4074 lpfc_printf_log(
4075 phba, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4076 "4616 CGN Desc Data: 0x%08x 0x%08x "
4077 "0x%08x 0x%04x 0x%04x 0x%08x 0x%04x 0x%04x\n",
4078 be32_to_cpu(pcgd->desc_tag),
4079 be32_to_cpu(pcgd->desc_len),
4080 be32_to_cpu(pcgd->xmt_signal_capability),
4081 be16_to_cpu(pcgd->xmt_signal_frequency.count),
4082 be16_to_cpu(pcgd->xmt_signal_frequency.units),
4083 be32_to_cpu(pcgd->rcv_signal_capability),
4084 be16_to_cpu(pcgd->rcv_signal_frequency.count),
4085 be16_to_cpu(pcgd->rcv_signal_frequency.units));
4086
4087 /* Compare driver and Fport capabilities and choose
4088 * least common.
4089 */
4090 lpfc_least_capable_settings(phba, pcgd);
4091 rcv_cap_desc = true;
4092 break;
4093 default:
4094 dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
4095 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
4096 "4919 unknown Diagnostic "
4097 "Descriptor[%d]: tag x%x (%s)\n",
4098 desc_cnt, dtag, dtag_nm);
4099 }
4100
4101 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
4102 tlv = fc_tlv_next_desc(tlv);
4103 desc_cnt++;
4104 }
4105
4106 out:
4107 if (!rcv_cap_desc) {
4108 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
4109 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4110 phba->cgn_sig_freq = 0;
4111 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_CGN_MGMT,
4112 "4202 EDC rsp error - sending RDF "
4113 "for FPIN only.\n");
4114 }
4115
4116 lpfc_config_cgn_signal(phba);
4117
4118 /* Check to see if link went down during discovery */
4119 lpfc_els_chk_latt(phba->pport);
4120 lpfc_debugfs_disc_trc(phba->pport, LPFC_DISC_TRC_ELS_CMD,
4121 "EDC Cmpl: did:x%x refcnt %d",
4122 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
4123 lpfc_els_free_iocb(phba, cmdiocb);
4124 lpfc_nlp_put(ndlp);
4125 }
4126
4127 static void
lpfc_format_edc_lft_desc(struct lpfc_hba * phba,struct fc_tlv_desc * tlv)4128 lpfc_format_edc_lft_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
4129 {
4130 struct fc_diag_lnkflt_desc *lft = (struct fc_diag_lnkflt_desc *)tlv;
4131
4132 lft->desc_tag = cpu_to_be32(ELS_DTAG_LNK_FAULT_CAP);
4133 lft->desc_len = cpu_to_be32(
4134 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_lnkflt_desc));
4135
4136 lft->degrade_activate_threshold =
4137 cpu_to_be32(phba->degrade_activate_threshold);
4138 lft->degrade_deactivate_threshold =
4139 cpu_to_be32(phba->degrade_deactivate_threshold);
4140 lft->fec_degrade_interval = cpu_to_be32(phba->fec_degrade_interval);
4141 }
4142
4143 static void
lpfc_format_edc_cgn_desc(struct lpfc_hba * phba,struct fc_tlv_desc * tlv)4144 lpfc_format_edc_cgn_desc(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
4145 {
4146 struct fc_diag_cg_sig_desc *cgd = (struct fc_diag_cg_sig_desc *)tlv;
4147
4148 /* We are assuming cgd was zero'ed before calling this routine */
4149
4150 /* Configure the congestion detection capability */
4151 cgd->desc_tag = cpu_to_be32(ELS_DTAG_CG_SIGNAL_CAP);
4152
4153 /* Descriptor len doesn't include the tag or len fields. */
4154 cgd->desc_len = cpu_to_be32(
4155 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_diag_cg_sig_desc));
4156
4157 /* xmt_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
4158 * xmt_signal_frequency.count already set to 0.
4159 * xmt_signal_frequency.units already set to 0.
4160 */
4161
4162 if (phba->cmf_active_mode == LPFC_CFG_OFF) {
4163 /* rcv_signal_capability already set to EDC_CG_SIG_NOTSUPPORTED.
4164 * rcv_signal_frequency.count already set to 0.
4165 * rcv_signal_frequency.units already set to 0.
4166 */
4167 phba->cgn_sig_freq = 0;
4168 return;
4169 }
4170 switch (phba->cgn_reg_signal) {
4171 case EDC_CG_SIG_WARN_ONLY:
4172 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ONLY);
4173 break;
4174 case EDC_CG_SIG_WARN_ALARM:
4175 cgd->rcv_signal_capability = cpu_to_be32(EDC_CG_SIG_WARN_ALARM);
4176 break;
4177 default:
4178 /* rcv_signal_capability left 0 thus no support */
4179 break;
4180 }
4181
4182 /* We start negotiation with lpfc_fabric_cgn_frequency, after
4183 * the completion we settle on the higher frequency.
4184 */
4185 cgd->rcv_signal_frequency.count =
4186 cpu_to_be16(lpfc_fabric_cgn_frequency);
4187 cgd->rcv_signal_frequency.units =
4188 cpu_to_be16(EDC_CG_SIGFREQ_MSEC);
4189 }
4190
4191 static bool
lpfc_link_is_lds_capable(struct lpfc_hba * phba)4192 lpfc_link_is_lds_capable(struct lpfc_hba *phba)
4193 {
4194 if (!(phba->lmt & LMT_64Gb))
4195 return false;
4196 if (phba->sli_rev != LPFC_SLI_REV4)
4197 return false;
4198
4199 if (phba->sli4_hba.conf_trunk) {
4200 if (phba->trunk_link.phy_lnk_speed == LPFC_USER_LINK_SPEED_64G)
4201 return true;
4202 } else if (phba->fc_linkspeed == LPFC_LINK_SPEED_64GHZ) {
4203 return true;
4204 }
4205 return false;
4206 }
4207
4208 /**
4209 * lpfc_issue_els_edc - Exchange Diagnostic Capabilities with the fabric.
4210 * @vport: pointer to a host virtual N_Port data structure.
4211 * @retry: retry counter for the command iocb.
4212 *
4213 * This routine issues an ELS EDC to the F-Port Controller to communicate
4214 * this N_Port's support of hardware signals in its Congestion
4215 * Capabilities Descriptor.
4216 *
4217 * Note: This routine does not check if one or more signals are
4218 * set in the cgn_reg_signal parameter. The caller makes the
4219 * decision to enforce cgn_reg_signal as nonzero or zero depending
4220 * on the conditions. During Fabric requests, the driver
4221 * requires cgn_reg_signals to be nonzero. But a dynamic request
4222 * to set the congestion mode to OFF from Monitor or Manage
4223 * would correctly issue an EDC with no signals enabled to
4224 * turn off switch functionality and then update the FW.
4225 *
4226 * Return code
4227 * 0 - Successfully issued edc command
4228 * 1 - Failed to issue edc command
4229 **/
4230 int
lpfc_issue_els_edc(struct lpfc_vport * vport,uint8_t retry)4231 lpfc_issue_els_edc(struct lpfc_vport *vport, uint8_t retry)
4232 {
4233 struct lpfc_hba *phba = vport->phba;
4234 struct lpfc_iocbq *elsiocb;
4235 struct fc_els_edc *edc_req;
4236 struct fc_tlv_desc *tlv;
4237 u16 cmdsize;
4238 struct lpfc_nodelist *ndlp;
4239 u8 *pcmd = NULL;
4240 u32 cgn_desc_size, lft_desc_size;
4241 int rc;
4242
4243 if (vport->port_type == LPFC_NPIV_PORT)
4244 return -EACCES;
4245
4246 ndlp = lpfc_findnode_did(vport, Fabric_DID);
4247 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
4248 return -ENODEV;
4249
4250 cgn_desc_size = (phba->cgn_init_reg_signal) ?
4251 sizeof(struct fc_diag_cg_sig_desc) : 0;
4252 lft_desc_size = (lpfc_link_is_lds_capable(phba)) ?
4253 sizeof(struct fc_diag_lnkflt_desc) : 0;
4254 cmdsize = cgn_desc_size + lft_desc_size;
4255
4256 /* Skip EDC if no applicable descriptors */
4257 if (!cmdsize)
4258 goto try_rdf;
4259
4260 cmdsize += sizeof(struct fc_els_edc);
4261 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
4262 ndlp->nlp_DID, ELS_CMD_EDC);
4263 if (!elsiocb)
4264 goto try_rdf;
4265
4266 /* Configure the payload for the supported Diagnostics capabilities. */
4267 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
4268 memset(pcmd, 0, cmdsize);
4269 edc_req = (struct fc_els_edc *)pcmd;
4270 edc_req->desc_len = cpu_to_be32(cgn_desc_size + lft_desc_size);
4271 edc_req->edc_cmd = ELS_EDC;
4272 tlv = edc_req->desc;
4273
4274 if (cgn_desc_size) {
4275 lpfc_format_edc_cgn_desc(phba, tlv);
4276 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
4277 tlv = fc_tlv_next_desc(tlv);
4278 }
4279
4280 if (lft_desc_size)
4281 lpfc_format_edc_lft_desc(phba, tlv);
4282
4283 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_CGN_MGMT,
4284 "4623 Xmit EDC to remote "
4285 "NPORT x%x reg_sig x%x reg_fpin:x%x\n",
4286 ndlp->nlp_DID, phba->cgn_reg_signal,
4287 phba->cgn_reg_fpin);
4288
4289 elsiocb->cmd_cmpl = lpfc_cmpl_els_disc_cmd;
4290 elsiocb->ndlp = lpfc_nlp_get(ndlp);
4291 if (!elsiocb->ndlp) {
4292 lpfc_els_free_iocb(phba, elsiocb);
4293 return -EIO;
4294 }
4295
4296 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4297 "Issue EDC: did:x%x refcnt %d",
4298 ndlp->nlp_DID, kref_read(&ndlp->kref), 0);
4299 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
4300 if (rc == IOCB_ERROR) {
4301 /* The additional lpfc_nlp_put will cause the following
4302 * lpfc_els_free_iocb routine to trigger the rlease of
4303 * the node.
4304 */
4305 lpfc_els_free_iocb(phba, elsiocb);
4306 lpfc_nlp_put(ndlp);
4307 goto try_rdf;
4308 }
4309 return 0;
4310 try_rdf:
4311 phba->cgn_reg_fpin = LPFC_CGN_FPIN_WARN | LPFC_CGN_FPIN_ALARM;
4312 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
4313 rc = lpfc_issue_els_rdf(vport, 0);
4314 return rc;
4315 }
4316
4317 /**
4318 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
4319 * @vport: pointer to a host virtual N_Port data structure.
4320 * @nlp: pointer to a node-list data structure.
4321 *
4322 * This routine cancels the timer with a delayed IOCB-command retry for
4323 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
4324 * removes the ELS retry event if it presents. In addition, if the
4325 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
4326 * commands are sent for the @vport's nodes that require issuing discovery
4327 * ADISC.
4328 **/
4329 void
lpfc_cancel_retry_delay_tmo(struct lpfc_vport * vport,struct lpfc_nodelist * nlp)4330 lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
4331 {
4332 struct lpfc_work_evt *evtp;
4333
4334 if (!test_and_clear_bit(NLP_DELAY_TMO, &nlp->nlp_flag))
4335 return;
4336 del_timer_sync(&nlp->nlp_delayfunc);
4337 nlp->nlp_last_elscmd = 0;
4338 if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
4339 list_del_init(&nlp->els_retry_evt.evt_listp);
4340 /* Decrement nlp reference count held for the delayed retry */
4341 evtp = &nlp->els_retry_evt;
4342 lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
4343 }
4344 if (test_and_clear_bit(NLP_NPR_2B_DISC, &nlp->nlp_flag)) {
4345 if (vport->num_disc_nodes) {
4346 if (vport->port_state < LPFC_VPORT_READY) {
4347 /* Check if there are more ADISCs to be sent */
4348 lpfc_more_adisc(vport);
4349 } else {
4350 /* Check if there are more PLOGIs to be sent */
4351 lpfc_more_plogi(vport);
4352 if (vport->num_disc_nodes == 0) {
4353 clear_bit(FC_NDISC_ACTIVE,
4354 &vport->fc_flag);
4355 lpfc_can_disctmo(vport);
4356 lpfc_end_rscn(vport);
4357 }
4358 }
4359 }
4360 }
4361 return;
4362 }
4363
4364 /**
4365 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
4366 * @t: pointer to the timer function associated data (ndlp).
4367 *
4368 * This routine is invoked by the ndlp delayed-function timer to check
4369 * whether there is any pending ELS retry event(s) with the node. If not, it
4370 * simply returns. Otherwise, if there is at least one ELS delayed event, it
4371 * adds the delayed events to the HBA work list and invokes the
4372 * lpfc_worker_wake_up() routine to wake up worker thread to process the
4373 * event. Note that lpfc_nlp_get() is called before posting the event to
4374 * the work list to hold reference count of ndlp so that it guarantees the
4375 * reference to ndlp will still be available when the worker thread gets
4376 * to the event associated with the ndlp.
4377 **/
4378 void
lpfc_els_retry_delay(struct timer_list * t)4379 lpfc_els_retry_delay(struct timer_list *t)
4380 {
4381 struct lpfc_nodelist *ndlp = from_timer(ndlp, t, nlp_delayfunc);
4382 struct lpfc_vport *vport = ndlp->vport;
4383 struct lpfc_hba *phba = vport->phba;
4384 unsigned long flags;
4385 struct lpfc_work_evt *evtp = &ndlp->els_retry_evt;
4386
4387 /* Hold a node reference for outstanding queued work */
4388 if (!lpfc_nlp_get(ndlp))
4389 return;
4390
4391 spin_lock_irqsave(&phba->hbalock, flags);
4392 if (!list_empty(&evtp->evt_listp)) {
4393 spin_unlock_irqrestore(&phba->hbalock, flags);
4394 lpfc_nlp_put(ndlp);
4395 return;
4396 }
4397
4398 evtp->evt_arg1 = ndlp;
4399 evtp->evt = LPFC_EVT_ELS_RETRY;
4400 list_add_tail(&evtp->evt_listp, &phba->work_list);
4401 spin_unlock_irqrestore(&phba->hbalock, flags);
4402
4403 lpfc_worker_wake_up(phba);
4404 }
4405
4406 /**
4407 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
4408 * @ndlp: pointer to a node-list data structure.
4409 *
4410 * This routine is the worker-thread handler for processing the @ndlp delayed
4411 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
4412 * the last ELS command from the associated ndlp and invokes the proper ELS
4413 * function according to the delayed ELS command to retry the command.
4414 **/
4415 void
lpfc_els_retry_delay_handler(struct lpfc_nodelist * ndlp)4416 lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
4417 {
4418 struct lpfc_vport *vport = ndlp->vport;
4419 uint32_t cmd, retry;
4420
4421 spin_lock_irq(&ndlp->lock);
4422 cmd = ndlp->nlp_last_elscmd;
4423 ndlp->nlp_last_elscmd = 0;
4424 spin_unlock_irq(&ndlp->lock);
4425
4426 if (!test_and_clear_bit(NLP_DELAY_TMO, &ndlp->nlp_flag))
4427 return;
4428
4429 /*
4430 * If a discovery event readded nlp_delayfunc after timer
4431 * firing and before processing the timer, cancel the
4432 * nlp_delayfunc.
4433 */
4434 del_timer_sync(&ndlp->nlp_delayfunc);
4435 retry = ndlp->nlp_retry;
4436 ndlp->nlp_retry = 0;
4437
4438 switch (cmd) {
4439 case ELS_CMD_FLOGI:
4440 lpfc_issue_els_flogi(vport, ndlp, retry);
4441 break;
4442 case ELS_CMD_PLOGI:
4443 if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
4444 ndlp->nlp_prev_state = ndlp->nlp_state;
4445 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
4446 }
4447 break;
4448 case ELS_CMD_ADISC:
4449 if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
4450 ndlp->nlp_prev_state = ndlp->nlp_state;
4451 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
4452 }
4453 break;
4454 case ELS_CMD_PRLI:
4455 case ELS_CMD_NVMEPRLI:
4456 if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
4457 ndlp->nlp_prev_state = ndlp->nlp_state;
4458 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
4459 }
4460 break;
4461 case ELS_CMD_LOGO:
4462 if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
4463 ndlp->nlp_prev_state = ndlp->nlp_state;
4464 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
4465 }
4466 break;
4467 case ELS_CMD_FDISC:
4468 if (!test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag))
4469 lpfc_issue_els_fdisc(vport, ndlp, retry);
4470 break;
4471 }
4472 return;
4473 }
4474
4475 /**
4476 * lpfc_link_reset - Issue link reset
4477 * @vport: pointer to a virtual N_Port data structure.
4478 *
4479 * This routine performs link reset by sending INIT_LINK mailbox command.
4480 * For SLI-3 adapter, link attention interrupt is enabled before issuing
4481 * INIT_LINK mailbox command.
4482 *
4483 * Return code
4484 * 0 - Link reset initiated successfully
4485 * 1 - Failed to initiate link reset
4486 **/
4487 int
lpfc_link_reset(struct lpfc_vport * vport)4488 lpfc_link_reset(struct lpfc_vport *vport)
4489 {
4490 struct lpfc_hba *phba = vport->phba;
4491 LPFC_MBOXQ_t *mbox;
4492 uint32_t control;
4493 int rc;
4494
4495 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
4496 "2851 Attempt link reset\n");
4497 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4498 if (!mbox) {
4499 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4500 "2852 Failed to allocate mbox memory");
4501 return 1;
4502 }
4503
4504 /* Enable Link attention interrupts */
4505 if (phba->sli_rev <= LPFC_SLI_REV3) {
4506 spin_lock_irq(&phba->hbalock);
4507 phba->sli.sli_flag |= LPFC_PROCESS_LA;
4508 control = readl(phba->HCregaddr);
4509 control |= HC_LAINT_ENA;
4510 writel(control, phba->HCregaddr);
4511 readl(phba->HCregaddr); /* flush */
4512 spin_unlock_irq(&phba->hbalock);
4513 }
4514
4515 lpfc_init_link(phba, mbox, phba->cfg_topology,
4516 phba->cfg_link_speed);
4517 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4518 mbox->vport = vport;
4519 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4520 if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
4521 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4522 "2853 Failed to issue INIT_LINK "
4523 "mbox command, rc:x%x\n", rc);
4524 mempool_free(mbox, phba->mbox_mem_pool);
4525 return 1;
4526 }
4527
4528 return 0;
4529 }
4530
4531 /**
4532 * lpfc_els_retry - Make retry decision on an els command iocb
4533 * @phba: pointer to lpfc hba data structure.
4534 * @cmdiocb: pointer to lpfc command iocb data structure.
4535 * @rspiocb: pointer to lpfc response iocb data structure.
4536 *
4537 * This routine makes a retry decision on an ELS command IOCB, which has
4538 * failed. The following ELS IOCBs use this function for retrying the command
4539 * when previously issued command responsed with error status: FLOGI, PLOGI,
4540 * PRLI, ADISC and FDISC. Based on the ELS command type and the
4541 * returned error status, it makes the decision whether a retry shall be
4542 * issued for the command, and whether a retry shall be made immediately or
4543 * delayed. In the former case, the corresponding ELS command issuing-function
4544 * is called to retry the command. In the later case, the ELS command shall
4545 * be posted to the ndlp delayed event and delayed function timer set to the
4546 * ndlp for the delayed command issusing.
4547 *
4548 * Return code
4549 * 0 - No retry of els command is made
4550 * 1 - Immediate or delayed retry of els command is made
4551 **/
4552 static int
lpfc_els_retry(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)4553 lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
4554 struct lpfc_iocbq *rspiocb)
4555 {
4556 struct lpfc_vport *vport = cmdiocb->vport;
4557 union lpfc_wqe128 *irsp = &rspiocb->wqe;
4558 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
4559 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
4560 uint32_t *elscmd;
4561 struct ls_rjt stat;
4562 int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
4563 int logerr = 0;
4564 uint32_t cmd = 0;
4565 uint32_t did;
4566 int link_reset = 0, rc;
4567 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
4568 u32 ulp_word4 = get_job_word4(phba, rspiocb);
4569 u8 rsn_code_exp = 0;
4570
4571
4572 /* Note: cmd_dmabuf may be 0 for internal driver abort
4573 * of delays ELS command.
4574 */
4575
4576 if (pcmd && pcmd->virt) {
4577 elscmd = (uint32_t *) (pcmd->virt);
4578 cmd = *elscmd++;
4579 }
4580
4581 if (ndlp)
4582 did = ndlp->nlp_DID;
4583 else {
4584 /* We should only hit this case for retrying PLOGI */
4585 did = get_job_els_rsp64_did(phba, rspiocb);
4586 ndlp = lpfc_findnode_did(vport, did);
4587 if (!ndlp && (cmd != ELS_CMD_PLOGI))
4588 return 0;
4589 }
4590
4591 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
4592 "Retry ELS: wd7:x%x wd4:x%x did:x%x",
4593 *(((uint32_t *)irsp) + 7), ulp_word4, did);
4594
4595 switch (ulp_status) {
4596 case IOSTAT_FCP_RSP_ERROR:
4597 break;
4598 case IOSTAT_REMOTE_STOP:
4599 if (phba->sli_rev == LPFC_SLI_REV4) {
4600 /* This IO was aborted by the target, we don't
4601 * know the rxid and because we did not send the
4602 * ABTS we cannot generate and RRQ.
4603 */
4604 lpfc_set_rrq_active(phba, ndlp,
4605 cmdiocb->sli4_lxritag, 0, 0);
4606 }
4607 break;
4608 case IOSTAT_LOCAL_REJECT:
4609 switch ((ulp_word4 & IOERR_PARAM_MASK)) {
4610 case IOERR_LOOP_OPEN_FAILURE:
4611 if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
4612 delay = 1000;
4613 retry = 1;
4614 break;
4615
4616 case IOERR_ILLEGAL_COMMAND:
4617 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
4618 "0124 Retry illegal cmd x%x "
4619 "retry:x%x delay:x%x\n",
4620 cmd, cmdiocb->retry, delay);
4621 retry = 1;
4622 /* All command's retry policy */
4623 maxretry = 8;
4624 if (cmdiocb->retry > 2)
4625 delay = 1000;
4626 break;
4627
4628 case IOERR_NO_RESOURCES:
4629 logerr = 1; /* HBA out of resources */
4630 retry = 1;
4631 if (cmdiocb->retry > 100)
4632 delay = 100;
4633 maxretry = 250;
4634 break;
4635
4636 case IOERR_ILLEGAL_FRAME:
4637 delay = 100;
4638 retry = 1;
4639 break;
4640
4641 case IOERR_INVALID_RPI:
4642 if (cmd == ELS_CMD_PLOGI &&
4643 did == NameServer_DID) {
4644 /* Continue forever if plogi to */
4645 /* the nameserver fails */
4646 maxretry = 0;
4647 delay = 100;
4648 } else if (cmd == ELS_CMD_PRLI &&
4649 ndlp->nlp_state != NLP_STE_PRLI_ISSUE) {
4650 /* State-command disagreement. The PRLI was
4651 * failed with an invalid rpi meaning there
4652 * some unexpected state change. Don't retry.
4653 */
4654 maxretry = 0;
4655 retry = 0;
4656 break;
4657 }
4658 retry = 1;
4659 break;
4660
4661 case IOERR_SEQUENCE_TIMEOUT:
4662 if (cmd == ELS_CMD_PLOGI &&
4663 did == NameServer_DID &&
4664 (cmdiocb->retry + 1) == maxretry) {
4665 /* Reset the Link */
4666 link_reset = 1;
4667 break;
4668 }
4669 retry = 1;
4670 delay = 100;
4671 break;
4672 case IOERR_SLI_ABORTED:
4673 /* Retry ELS PLOGI command?
4674 * Possibly the rport just wasn't ready.
4675 */
4676 if (cmd == ELS_CMD_PLOGI) {
4677 /* No retry if state change */
4678 if (ndlp &&
4679 ndlp->nlp_state != NLP_STE_PLOGI_ISSUE)
4680 goto out_retry;
4681 retry = 1;
4682 maxretry = 2;
4683 }
4684 break;
4685 }
4686 break;
4687
4688 case IOSTAT_NPORT_RJT:
4689 case IOSTAT_FABRIC_RJT:
4690 if (ulp_word4 & RJT_UNAVAIL_TEMP) {
4691 retry = 1;
4692 break;
4693 }
4694 break;
4695
4696 case IOSTAT_NPORT_BSY:
4697 case IOSTAT_FABRIC_BSY:
4698 logerr = 1; /* Fabric / Remote NPort out of resources */
4699 retry = 1;
4700 break;
4701
4702 case IOSTAT_LS_RJT:
4703 stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
4704 /* Added for Vendor specifc support
4705 * Just keep retrying for these Rsn / Exp codes
4706 */
4707 if (test_bit(FC_PT2PT, &vport->fc_flag) &&
4708 cmd == ELS_CMD_NVMEPRLI) {
4709 switch (stat.un.b.lsRjtRsnCode) {
4710 case LSRJT_UNABLE_TPC:
4711 case LSRJT_INVALID_CMD:
4712 case LSRJT_LOGICAL_ERR:
4713 case LSRJT_CMD_UNSUPPORTED:
4714 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
4715 "0168 NVME PRLI LS_RJT "
4716 "reason %x port doesn't "
4717 "support NVME, disabling NVME\n",
4718 stat.un.b.lsRjtRsnCode);
4719 retry = 0;
4720 set_bit(FC_PT2PT_NO_NVME, &vport->fc_flag);
4721 goto out_retry;
4722 }
4723 }
4724 switch (stat.un.b.lsRjtRsnCode) {
4725 case LSRJT_UNABLE_TPC:
4726 /* Special case for PRLI LS_RJTs. Recall that lpfc
4727 * uses a single routine to issue both PRLI FC4 types.
4728 * If the PRLI is rejected because that FC4 type
4729 * isn't really supported, don't retry and cause
4730 * multiple transport registrations. Otherwise, parse
4731 * the reason code/reason code explanation and take the
4732 * appropriate action.
4733 */
4734 lpfc_printf_vlog(vport, KERN_INFO,
4735 LOG_DISCOVERY | LOG_ELS | LOG_NODE,
4736 "0153 ELS cmd x%x LS_RJT by x%x. "
4737 "RsnCode x%x RsnCodeExp x%x\n",
4738 cmd, did, stat.un.b.lsRjtRsnCode,
4739 stat.un.b.lsRjtRsnCodeExp);
4740
4741 switch (stat.un.b.lsRjtRsnCodeExp) {
4742 case LSEXP_CANT_GIVE_DATA:
4743 case LSEXP_CMD_IN_PROGRESS:
4744 if (cmd == ELS_CMD_PLOGI) {
4745 delay = 1000;
4746 maxretry = 48;
4747 }
4748 retry = 1;
4749 break;
4750 case LSEXP_REQ_UNSUPPORTED:
4751 case LSEXP_NO_RSRC_ASSIGN:
4752 /* These explanation codes get no retry. */
4753 if (cmd == ELS_CMD_PRLI ||
4754 cmd == ELS_CMD_NVMEPRLI)
4755 break;
4756 fallthrough;
4757 default:
4758 /* Limit the delay and retry action to a limited
4759 * cmd set. There are other ELS commands where
4760 * a retry is not expected.
4761 */
4762 if (cmd == ELS_CMD_PLOGI ||
4763 cmd == ELS_CMD_PRLI ||
4764 cmd == ELS_CMD_NVMEPRLI) {
4765 delay = 1000;
4766 maxretry = lpfc_max_els_tries + 1;
4767 retry = 1;
4768 }
4769 break;
4770 }
4771
4772 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4773 (cmd == ELS_CMD_FDISC) &&
4774 (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
4775 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
4776 "0125 FDISC (x%x). "
4777 "Fabric out of resources\n",
4778 stat.un.lsRjtError);
4779 lpfc_vport_set_state(vport,
4780 FC_VPORT_NO_FABRIC_RSCS);
4781 }
4782 break;
4783
4784 case LSRJT_LOGICAL_BSY:
4785 rsn_code_exp = stat.un.b.lsRjtRsnCodeExp;
4786 if ((cmd == ELS_CMD_PLOGI) ||
4787 (cmd == ELS_CMD_PRLI) ||
4788 (cmd == ELS_CMD_NVMEPRLI)) {
4789 delay = 1000;
4790 maxretry = 48;
4791
4792 /* An authentication LS_RJT reason code
4793 * explanation means some error in the
4794 * security settings end-to-end. Reduce
4795 * the retry count to allow lpfc to clear
4796 * RSCN mode and not race with dev_loss.
4797 */
4798 if (cmd == ELS_CMD_PLOGI &&
4799 rsn_code_exp == LSEXP_AUTH_REQ)
4800 maxretry = 8;
4801 } else if (cmd == ELS_CMD_FDISC) {
4802 /* FDISC retry policy */
4803 maxretry = 48;
4804 if (cmdiocb->retry >= 32)
4805 delay = 1000;
4806 }
4807 retry = 1;
4808 break;
4809
4810 case LSRJT_LOGICAL_ERR:
4811 /* There are some cases where switches return this
4812 * error when they are not ready and should be returning
4813 * Logical Busy. We should delay every time.
4814 */
4815 if (cmd == ELS_CMD_FDISC &&
4816 stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
4817 maxretry = 3;
4818 delay = 1000;
4819 retry = 1;
4820 } else if (cmd == ELS_CMD_FLOGI &&
4821 stat.un.b.lsRjtRsnCodeExp ==
4822 LSEXP_NOTHING_MORE) {
4823 vport->fc_sparam.cmn.bbRcvSizeMsb &= 0xf;
4824 retry = 1;
4825 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
4826 "0820 FLOGI (x%x). "
4827 "BBCredit Not Supported\n",
4828 stat.un.lsRjtError);
4829 } else if (cmd == ELS_CMD_PLOGI) {
4830 rsn_code_exp = stat.un.b.lsRjtRsnCodeExp;
4831
4832 /* An authentication LS_RJT reason code
4833 * explanation means some error in the
4834 * security settings end-to-end. Reduce
4835 * the retry count to allow lpfc to clear
4836 * RSCN mode and not race with dev_loss.
4837 */
4838 if (rsn_code_exp == LSEXP_AUTH_REQ) {
4839 delay = 1000;
4840 retry = 1;
4841 maxretry = 8;
4842 }
4843 }
4844 break;
4845
4846 case LSRJT_PROTOCOL_ERR:
4847 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4848 (cmd == ELS_CMD_FDISC) &&
4849 ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
4850 (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
4851 ) {
4852 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
4853 "0122 FDISC (x%x). "
4854 "Fabric Detected Bad WWN\n",
4855 stat.un.lsRjtError);
4856 lpfc_vport_set_state(vport,
4857 FC_VPORT_FABRIC_REJ_WWN);
4858 }
4859 break;
4860 case LSRJT_VENDOR_UNIQUE:
4861 if ((stat.un.b.vendorUnique == 0x45) &&
4862 (cmd == ELS_CMD_FLOGI)) {
4863 goto out_retry;
4864 }
4865 break;
4866 case LSRJT_CMD_UNSUPPORTED:
4867 /* lpfc nvmet returns this type of LS_RJT when it
4868 * receives an FCP PRLI because lpfc nvmet only
4869 * support NVME. ELS request is terminated for FCP4
4870 * on this rport.
4871 */
4872 if (stat.un.b.lsRjtRsnCodeExp ==
4873 LSEXP_REQ_UNSUPPORTED) {
4874 if (cmd == ELS_CMD_PRLI)
4875 goto out_retry;
4876 }
4877 break;
4878 }
4879 break;
4880
4881 case IOSTAT_INTERMED_RSP:
4882 case IOSTAT_BA_RJT:
4883 break;
4884
4885 default:
4886 break;
4887 }
4888
4889 if (link_reset) {
4890 rc = lpfc_link_reset(vport);
4891 if (rc) {
4892 /* Do not give up. Retry PLOGI one more time and attempt
4893 * link reset if PLOGI fails again.
4894 */
4895 retry = 1;
4896 delay = 100;
4897 goto out_retry;
4898 }
4899 return 1;
4900 }
4901
4902 if (did == FDMI_DID)
4903 retry = 1;
4904
4905 if ((cmd == ELS_CMD_FLOGI) &&
4906 (phba->fc_topology != LPFC_TOPOLOGY_LOOP) &&
4907 !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
4908 /* FLOGI retry policy */
4909 retry = 1;
4910 /* retry FLOGI forever */
4911 if (phba->link_flag != LS_LOOPBACK_MODE)
4912 maxretry = 0;
4913 else
4914 maxretry = 2;
4915
4916 if (cmdiocb->retry >= 100)
4917 delay = 5000;
4918 else if (cmdiocb->retry >= 32)
4919 delay = 1000;
4920 } else if ((cmd == ELS_CMD_FDISC) &&
4921 !lpfc_error_lost_link(vport, ulp_status, ulp_word4)) {
4922 /* retry FDISCs every second up to devloss */
4923 retry = 1;
4924 maxretry = vport->cfg_devloss_tmo;
4925 delay = 1000;
4926 }
4927
4928 cmdiocb->retry++;
4929 if (maxretry && (cmdiocb->retry >= maxretry)) {
4930 phba->fc_stat.elsRetryExceeded++;
4931 retry = 0;
4932 }
4933
4934 if (test_bit(FC_UNLOADING, &vport->load_flag))
4935 retry = 0;
4936
4937 out_retry:
4938 if (retry) {
4939 if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
4940 /* Stop retrying PLOGI and FDISC if in FCF discovery */
4941 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
4942 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4943 "2849 Stop retry ELS command "
4944 "x%x to remote NPORT x%x, "
4945 "Data: x%x x%x\n", cmd, did,
4946 cmdiocb->retry, delay);
4947 return 0;
4948 }
4949 }
4950
4951 /* Retry ELS command <elsCmd> to remote NPORT <did> */
4952 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
4953 "0107 Retry ELS command x%x to remote "
4954 "NPORT x%x Data: x%x x%x\n",
4955 cmd, did, cmdiocb->retry, delay);
4956
4957 if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
4958 ((ulp_status != IOSTAT_LOCAL_REJECT) ||
4959 ((ulp_word4 & IOERR_PARAM_MASK) !=
4960 IOERR_NO_RESOURCES))) {
4961 /* Don't reset timer for no resources */
4962
4963 /* If discovery / RSCN timer is running, reset it */
4964 if (timer_pending(&vport->fc_disctmo) ||
4965 test_bit(FC_RSCN_MODE, &vport->fc_flag))
4966 lpfc_set_disctmo(vport);
4967 }
4968
4969 phba->fc_stat.elsXmitRetry++;
4970 if (ndlp && delay) {
4971 phba->fc_stat.elsDelayRetry++;
4972 ndlp->nlp_retry = cmdiocb->retry;
4973
4974 /* delay is specified in milliseconds */
4975 mod_timer(&ndlp->nlp_delayfunc,
4976 jiffies + msecs_to_jiffies(delay));
4977 set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
4978
4979 ndlp->nlp_prev_state = ndlp->nlp_state;
4980 if ((cmd == ELS_CMD_PRLI) ||
4981 (cmd == ELS_CMD_NVMEPRLI))
4982 lpfc_nlp_set_state(vport, ndlp,
4983 NLP_STE_PRLI_ISSUE);
4984 else if (cmd != ELS_CMD_ADISC)
4985 lpfc_nlp_set_state(vport, ndlp,
4986 NLP_STE_NPR_NODE);
4987 ndlp->nlp_last_elscmd = cmd;
4988
4989 return 1;
4990 }
4991 switch (cmd) {
4992 case ELS_CMD_FLOGI:
4993 lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
4994 return 1;
4995 case ELS_CMD_FDISC:
4996 lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
4997 return 1;
4998 case ELS_CMD_PLOGI:
4999 if (ndlp) {
5000 ndlp->nlp_prev_state = ndlp->nlp_state;
5001 lpfc_nlp_set_state(vport, ndlp,
5002 NLP_STE_PLOGI_ISSUE);
5003 }
5004 lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
5005 return 1;
5006 case ELS_CMD_ADISC:
5007 ndlp->nlp_prev_state = ndlp->nlp_state;
5008 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
5009 lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
5010 return 1;
5011 case ELS_CMD_PRLI:
5012 case ELS_CMD_NVMEPRLI:
5013 ndlp->nlp_prev_state = ndlp->nlp_state;
5014 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
5015 lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
5016 return 1;
5017 case ELS_CMD_LOGO:
5018 ndlp->nlp_prev_state = ndlp->nlp_state;
5019 lpfc_nlp_set_state(vport, ndlp, NLP_STE_LOGO_ISSUE);
5020 lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
5021 return 1;
5022 }
5023 }
5024 /* No retry ELS command <elsCmd> to remote NPORT <did> */
5025 if (logerr) {
5026 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5027 "0137 No retry ELS command x%x to remote "
5028 "NPORT x%x: Out of Resources: Error:x%x/%x "
5029 "IoTag x%x\n",
5030 cmd, did, ulp_status, ulp_word4,
5031 cmdiocb->iotag);
5032 }
5033 else {
5034 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5035 "0108 No retry ELS command x%x to remote "
5036 "NPORT x%x Retried:%d Error:x%x/%x "
5037 "IoTag x%x nflags x%lx\n",
5038 cmd, did, cmdiocb->retry, ulp_status,
5039 ulp_word4, cmdiocb->iotag,
5040 (ndlp ? ndlp->nlp_flag : 0));
5041 }
5042 return 0;
5043 }
5044
5045 /**
5046 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
5047 * @phba: pointer to lpfc hba data structure.
5048 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
5049 *
5050 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
5051 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
5052 * checks to see whether there is a lpfc DMA buffer associated with the
5053 * response of the command IOCB. If so, it will be released before releasing
5054 * the lpfc DMA buffer associated with the IOCB itself.
5055 *
5056 * Return code
5057 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
5058 **/
5059 static int
lpfc_els_free_data(struct lpfc_hba * phba,struct lpfc_dmabuf * buf_ptr1)5060 lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
5061 {
5062 struct lpfc_dmabuf *buf_ptr;
5063
5064 /* Free the response before processing the command. */
5065 if (!list_empty(&buf_ptr1->list)) {
5066 list_remove_head(&buf_ptr1->list, buf_ptr,
5067 struct lpfc_dmabuf,
5068 list);
5069 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
5070 kfree(buf_ptr);
5071 }
5072 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
5073 kfree(buf_ptr1);
5074 return 0;
5075 }
5076
5077 /**
5078 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
5079 * @phba: pointer to lpfc hba data structure.
5080 * @buf_ptr: pointer to the lpfc dma buffer data structure.
5081 *
5082 * This routine releases the lpfc Direct Memory Access (DMA) buffer
5083 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
5084 * pool.
5085 *
5086 * Return code
5087 * 0 - Successfully released lpfc DMA buffer (currently, always return 0)
5088 **/
5089 static int
lpfc_els_free_bpl(struct lpfc_hba * phba,struct lpfc_dmabuf * buf_ptr)5090 lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
5091 {
5092 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
5093 kfree(buf_ptr);
5094 return 0;
5095 }
5096
5097 /**
5098 * lpfc_els_free_iocb - Free a command iocb and its associated resources
5099 * @phba: pointer to lpfc hba data structure.
5100 * @elsiocb: pointer to lpfc els command iocb data structure.
5101 *
5102 * This routine frees a command IOCB and its associated resources. The
5103 * command IOCB data structure contains the reference to various associated
5104 * resources, these fields must be set to NULL if the associated reference
5105 * not present:
5106 * cmd_dmabuf - reference to cmd.
5107 * cmd_dmabuf->next - reference to rsp
5108 * rsp_dmabuf - unused
5109 * bpl_dmabuf - reference to bpl
5110 *
5111 * It first properly decrements the reference count held on ndlp for the
5112 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
5113 * set, it invokes the lpfc_els_free_data() routine to release the Direct
5114 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
5115 * adds the DMA buffer the @phba data structure for the delayed release.
5116 * If reference to the Buffer Pointer List (BPL) is present, the
5117 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
5118 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
5119 * invoked to release the IOCB data structure back to @phba IOCBQ list.
5120 *
5121 * Return code
5122 * 0 - Success (currently, always return 0)
5123 **/
5124 int
lpfc_els_free_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * elsiocb)5125 lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
5126 {
5127 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
5128
5129 /* The I/O iocb is complete. Clear the node and first dmbuf */
5130 elsiocb->ndlp = NULL;
5131
5132 /* cmd_dmabuf = cmd, cmd_dmabuf->next = rsp, bpl_dmabuf = bpl */
5133 if (elsiocb->cmd_dmabuf) {
5134 if (elsiocb->cmd_flag & LPFC_DELAY_MEM_FREE) {
5135 /* Firmware could still be in progress of DMAing
5136 * payload, so don't free data buffer till after
5137 * a hbeat.
5138 */
5139 elsiocb->cmd_flag &= ~LPFC_DELAY_MEM_FREE;
5140 buf_ptr = elsiocb->cmd_dmabuf;
5141 elsiocb->cmd_dmabuf = NULL;
5142 if (buf_ptr) {
5143 buf_ptr1 = NULL;
5144 spin_lock_irq(&phba->hbalock);
5145 if (!list_empty(&buf_ptr->list)) {
5146 list_remove_head(&buf_ptr->list,
5147 buf_ptr1, struct lpfc_dmabuf,
5148 list);
5149 INIT_LIST_HEAD(&buf_ptr1->list);
5150 list_add_tail(&buf_ptr1->list,
5151 &phba->elsbuf);
5152 phba->elsbuf_cnt++;
5153 }
5154 INIT_LIST_HEAD(&buf_ptr->list);
5155 list_add_tail(&buf_ptr->list, &phba->elsbuf);
5156 phba->elsbuf_cnt++;
5157 spin_unlock_irq(&phba->hbalock);
5158 }
5159 } else {
5160 buf_ptr1 = elsiocb->cmd_dmabuf;
5161 lpfc_els_free_data(phba, buf_ptr1);
5162 elsiocb->cmd_dmabuf = NULL;
5163 }
5164 }
5165
5166 if (elsiocb->bpl_dmabuf) {
5167 buf_ptr = elsiocb->bpl_dmabuf;
5168 lpfc_els_free_bpl(phba, buf_ptr);
5169 elsiocb->bpl_dmabuf = NULL;
5170 }
5171 lpfc_sli_release_iocbq(phba, elsiocb);
5172 return 0;
5173 }
5174
5175 /**
5176 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
5177 * @phba: pointer to lpfc hba data structure.
5178 * @cmdiocb: pointer to lpfc command iocb data structure.
5179 * @rspiocb: pointer to lpfc response iocb data structure.
5180 *
5181 * This routine is the completion callback function to the Logout (LOGO)
5182 * Accept (ACC) Response ELS command. This routine is invoked to indicate
5183 * the completion of the LOGO process. If the node has transitioned to NPR,
5184 * this routine unregisters the RPI if it is still registered. The
5185 * lpfc_els_free_iocb() is invoked to release the IOCB data structure.
5186 **/
5187 static void
lpfc_cmpl_els_logo_acc(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)5188 lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
5189 struct lpfc_iocbq *rspiocb)
5190 {
5191 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
5192 struct lpfc_vport *vport = cmdiocb->vport;
5193 u32 ulp_status, ulp_word4;
5194
5195 ulp_status = get_job_ulpstatus(phba, rspiocb);
5196 ulp_word4 = get_job_word4(phba, rspiocb);
5197
5198 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5199 "ACC LOGO cmpl: status:x%x/x%x did:x%x",
5200 ulp_status, ulp_word4, ndlp->nlp_DID);
5201 /* ACC to LOGO completes to NPort <nlp_DID> */
5202 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5203 "0109 ACC to LOGO completes to NPort x%x refcnt %d "
5204 "last els x%x Data: x%lx x%x x%x\n",
5205 ndlp->nlp_DID, kref_read(&ndlp->kref),
5206 ndlp->nlp_last_elscmd, ndlp->nlp_flag, ndlp->nlp_state,
5207 ndlp->nlp_rpi);
5208
5209 /* This clause allows the LOGO ACC to complete and free resources
5210 * for the Fabric Domain Controller. It does deliberately skip
5211 * the unreg_rpi and release rpi because some fabrics send RDP
5212 * requests after logging out from the initiator.
5213 */
5214 if (ndlp->nlp_type & NLP_FABRIC &&
5215 ((ndlp->nlp_DID & WELL_KNOWN_DID_MASK) != WELL_KNOWN_DID_MASK))
5216 goto out;
5217
5218 if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
5219 if (test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag))
5220 lpfc_unreg_rpi(vport, ndlp);
5221
5222 /* If came from PRLO, then PRLO_ACC is done.
5223 * Start rediscovery now.
5224 */
5225 if (ndlp->nlp_last_elscmd == ELS_CMD_PRLO) {
5226 set_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag);
5227 ndlp->nlp_prev_state = ndlp->nlp_state;
5228 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
5229 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
5230 }
5231 }
5232
5233 out:
5234 /*
5235 * The driver received a LOGO from the rport and has ACK'd it.
5236 * At this point, the driver is done so release the IOCB
5237 */
5238 lpfc_els_free_iocb(phba, cmdiocb);
5239 lpfc_nlp_put(ndlp);
5240 }
5241
5242 /**
5243 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
5244 * @phba: pointer to lpfc hba data structure.
5245 * @pmb: pointer to the driver internal queue element for mailbox command.
5246 *
5247 * This routine is the completion callback function for unregister default
5248 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
5249 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
5250 * decrements the ndlp reference count held for this completion callback
5251 * function. After that, it invokes the lpfc_drop_node to check
5252 * whether it is appropriate to release the node.
5253 **/
5254 void
lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)5255 lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
5256 {
5257 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
5258 u32 mbx_flag = pmb->mbox_flag;
5259 u32 mbx_cmd = pmb->u.mb.mbxCommand;
5260
5261 if (ndlp) {
5262 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NODE,
5263 "0006 rpi x%x DID:%x flg:%lx %d x%px "
5264 "mbx_cmd x%x mbx_flag x%x x%px\n",
5265 ndlp->nlp_rpi, ndlp->nlp_DID, ndlp->nlp_flag,
5266 kref_read(&ndlp->kref), ndlp, mbx_cmd,
5267 mbx_flag, pmb);
5268
5269 /* This ends the default/temporary RPI cleanup logic for this
5270 * ndlp and the node and rpi needs to be released. Free the rpi
5271 * first on an UNREG_LOGIN and then release the final
5272 * references.
5273 */
5274 clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
5275 if (mbx_cmd == MBX_UNREG_LOGIN)
5276 clear_bit(NLP_UNREG_INP, &ndlp->nlp_flag);
5277 lpfc_nlp_put(ndlp);
5278 lpfc_drop_node(ndlp->vport, ndlp);
5279 }
5280
5281 lpfc_mbox_rsrc_cleanup(phba, pmb, MBOX_THD_UNLOCKED);
5282 }
5283
5284 /**
5285 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
5286 * @phba: pointer to lpfc hba data structure.
5287 * @cmdiocb: pointer to lpfc command iocb data structure.
5288 * @rspiocb: pointer to lpfc response iocb data structure.
5289 *
5290 * This routine is the completion callback function for ELS Response IOCB
5291 * command. In normal case, this callback function just properly sets the
5292 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
5293 * field in the command IOCB is not NULL, the referred mailbox command will
5294 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
5295 * the IOCB.
5296 **/
5297 static void
lpfc_cmpl_els_rsp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)5298 lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
5299 struct lpfc_iocbq *rspiocb)
5300 {
5301 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
5302 struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
5303 struct Scsi_Host *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
5304 IOCB_t *irsp;
5305 LPFC_MBOXQ_t *mbox = NULL;
5306 u32 ulp_status, ulp_word4, tmo, did, iotag;
5307
5308 if (!vport) {
5309 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
5310 "3177 null vport in ELS rsp\n");
5311 goto out;
5312 }
5313 if (cmdiocb->context_un.mbox)
5314 mbox = cmdiocb->context_un.mbox;
5315
5316 ulp_status = get_job_ulpstatus(phba, rspiocb);
5317 ulp_word4 = get_job_word4(phba, rspiocb);
5318 did = get_job_els_rsp64_did(phba, cmdiocb);
5319
5320 if (phba->sli_rev == LPFC_SLI_REV4) {
5321 tmo = get_wqe_tmo(cmdiocb);
5322 iotag = get_wqe_reqtag(cmdiocb);
5323 } else {
5324 irsp = &rspiocb->iocb;
5325 tmo = irsp->ulpTimeout;
5326 iotag = irsp->ulpIoTag;
5327 }
5328
5329 /* Check to see if link went down during discovery */
5330 if (!ndlp || lpfc_els_chk_latt(vport)) {
5331 if (mbox)
5332 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
5333 goto out;
5334 }
5335
5336 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5337 "ELS rsp cmpl: status:x%x/x%x did:x%x",
5338 ulp_status, ulp_word4, did);
5339 /* ELS response tag <ulpIoTag> completes */
5340 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5341 "0110 ELS response tag x%x completes "
5342 "Data: x%x x%x x%x x%x x%lx x%x x%x x%x %p %p\n",
5343 iotag, ulp_status, ulp_word4, tmo,
5344 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5345 ndlp->nlp_rpi, kref_read(&ndlp->kref), mbox, ndlp);
5346 if (mbox) {
5347 if (ulp_status == 0 &&
5348 test_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag)) {
5349 if (!lpfc_unreg_rpi(vport, ndlp) &&
5350 !test_bit(FC_PT2PT, &vport->fc_flag)) {
5351 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE ||
5352 ndlp->nlp_state ==
5353 NLP_STE_REG_LOGIN_ISSUE) {
5354 lpfc_printf_vlog(vport, KERN_INFO,
5355 LOG_DISCOVERY,
5356 "0314 PLOGI recov "
5357 "DID x%x "
5358 "Data: x%x x%x x%lx\n",
5359 ndlp->nlp_DID,
5360 ndlp->nlp_state,
5361 ndlp->nlp_rpi,
5362 ndlp->nlp_flag);
5363 goto out_free_mbox;
5364 }
5365 }
5366
5367 /* Increment reference count to ndlp to hold the
5368 * reference to ndlp for the callback function.
5369 */
5370 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
5371 if (!mbox->ctx_ndlp)
5372 goto out_free_mbox;
5373
5374 mbox->vport = vport;
5375 if (test_bit(NLP_RM_DFLT_RPI, &ndlp->nlp_flag)) {
5376 mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
5377 mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
5378 } else {
5379 mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
5380 ndlp->nlp_prev_state = ndlp->nlp_state;
5381 lpfc_nlp_set_state(vport, ndlp,
5382 NLP_STE_REG_LOGIN_ISSUE);
5383 }
5384
5385 set_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
5386 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5387 != MBX_NOT_FINISHED)
5388 goto out;
5389
5390 /* Decrement the ndlp reference count we
5391 * set for this failed mailbox command.
5392 */
5393 lpfc_nlp_put(ndlp);
5394 clear_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag);
5395
5396 /* ELS rsp: Cannot issue reg_login for <NPortid> */
5397 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
5398 "0138 ELS rsp: Cannot issue reg_login for x%x "
5399 "Data: x%lx x%x x%x\n",
5400 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5401 ndlp->nlp_rpi);
5402 }
5403 out_free_mbox:
5404 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
5405 }
5406 out:
5407 if (ndlp && shost) {
5408 if (mbox)
5409 clear_bit(NLP_ACC_REGLOGIN, &ndlp->nlp_flag);
5410 clear_bit(NLP_RM_DFLT_RPI, &ndlp->nlp_flag);
5411 }
5412
5413 /* An SLI4 NPIV instance wants to drop the node at this point under
5414 * these conditions because it doesn't need the login.
5415 */
5416 if (phba->sli_rev == LPFC_SLI_REV4 &&
5417 vport && vport->port_type == LPFC_NPIV_PORT &&
5418 !(ndlp->fc4_xpt_flags & SCSI_XPT_REGD)) {
5419 if (ndlp->nlp_state != NLP_STE_PLOGI_ISSUE &&
5420 ndlp->nlp_state != NLP_STE_REG_LOGIN_ISSUE &&
5421 ndlp->nlp_state != NLP_STE_PRLI_ISSUE) {
5422 /* Drop ndlp if there is no planned or outstanding
5423 * issued PRLI.
5424 *
5425 * In cases when the ndlp is acting as both an initiator
5426 * and target function, let our issued PRLI determine
5427 * the final ndlp kref drop.
5428 */
5429 lpfc_drop_node(vport, ndlp);
5430 }
5431 }
5432
5433 /* Release the originating I/O reference. */
5434 lpfc_els_free_iocb(phba, cmdiocb);
5435 lpfc_nlp_put(ndlp);
5436 return;
5437 }
5438
5439 /**
5440 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
5441 * @vport: pointer to a host virtual N_Port data structure.
5442 * @flag: the els command code to be accepted.
5443 * @oldiocb: pointer to the original lpfc command iocb data structure.
5444 * @ndlp: pointer to a node-list data structure.
5445 * @mbox: pointer to the driver internal queue element for mailbox command.
5446 *
5447 * This routine prepares and issues an Accept (ACC) response IOCB
5448 * command. It uses the @flag to properly set up the IOCB field for the
5449 * specific ACC response command to be issued and invokes the
5450 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
5451 * @mbox pointer is passed in, it will be put into the context_un.mbox
5452 * field of the IOCB for the completion callback function to issue the
5453 * mailbox command to the HBA later when callback is invoked.
5454 *
5455 * Note that the ndlp reference count will be incremented by 1 for holding the
5456 * ndlp and the reference to ndlp will be stored into the ndlp field of
5457 * the IOCB for the completion callback function to the corresponding
5458 * response ELS IOCB command.
5459 *
5460 * Return code
5461 * 0 - Successfully issued acc response
5462 * 1 - Failed to issue acc response
5463 **/
5464 int
lpfc_els_rsp_acc(struct lpfc_vport * vport,uint32_t flag,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp,LPFC_MBOXQ_t * mbox)5465 lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
5466 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
5467 LPFC_MBOXQ_t *mbox)
5468 {
5469 struct lpfc_hba *phba = vport->phba;
5470 IOCB_t *icmd;
5471 IOCB_t *oldcmd;
5472 union lpfc_wqe128 *wqe;
5473 union lpfc_wqe128 *oldwqe = &oldiocb->wqe;
5474 struct lpfc_iocbq *elsiocb;
5475 uint8_t *pcmd;
5476 struct serv_parm *sp;
5477 uint16_t cmdsize;
5478 int rc;
5479 ELS_PKT *els_pkt_ptr;
5480 struct fc_els_rdf_resp *rdf_resp;
5481
5482 switch (flag) {
5483 case ELS_CMD_ACC:
5484 cmdsize = sizeof(uint32_t);
5485 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5486 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5487 if (!elsiocb) {
5488 clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5489 return 1;
5490 }
5491
5492 if (phba->sli_rev == LPFC_SLI_REV4) {
5493 wqe = &elsiocb->wqe;
5494 /* XRI / rx_id */
5495 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5496 bf_get(wqe_ctxt_tag,
5497 &oldwqe->xmit_els_rsp.wqe_com));
5498
5499 /* oxid */
5500 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5501 bf_get(wqe_rcvoxid,
5502 &oldwqe->xmit_els_rsp.wqe_com));
5503 } else {
5504 icmd = &elsiocb->iocb;
5505 oldcmd = &oldiocb->iocb;
5506 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5507 icmd->unsli3.rcvsli3.ox_id =
5508 oldcmd->unsli3.rcvsli3.ox_id;
5509 }
5510
5511 pcmd = elsiocb->cmd_dmabuf->virt;
5512 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5513 pcmd += sizeof(uint32_t);
5514
5515 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5516 "Issue ACC: did:x%x flg:x%lx",
5517 ndlp->nlp_DID, ndlp->nlp_flag, 0);
5518 break;
5519 case ELS_CMD_FLOGI:
5520 case ELS_CMD_PLOGI:
5521 cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
5522 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5523 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5524 if (!elsiocb)
5525 return 1;
5526
5527 if (phba->sli_rev == LPFC_SLI_REV4) {
5528 wqe = &elsiocb->wqe;
5529 /* XRI / rx_id */
5530 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5531 bf_get(wqe_ctxt_tag,
5532 &oldwqe->xmit_els_rsp.wqe_com));
5533
5534 /* oxid */
5535 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5536 bf_get(wqe_rcvoxid,
5537 &oldwqe->xmit_els_rsp.wqe_com));
5538 } else {
5539 icmd = &elsiocb->iocb;
5540 oldcmd = &oldiocb->iocb;
5541 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5542 icmd->unsli3.rcvsli3.ox_id =
5543 oldcmd->unsli3.rcvsli3.ox_id;
5544 }
5545
5546 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
5547
5548 if (mbox)
5549 elsiocb->context_un.mbox = mbox;
5550
5551 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5552 pcmd += sizeof(uint32_t);
5553 sp = (struct serv_parm *)pcmd;
5554
5555 if (flag == ELS_CMD_FLOGI) {
5556 /* Copy the received service parameters back */
5557 memcpy(sp, &phba->fc_fabparam,
5558 sizeof(struct serv_parm));
5559
5560 /* Clear the F_Port bit */
5561 sp->cmn.fPort = 0;
5562
5563 /* Mark all class service parameters as invalid */
5564 sp->cls1.classValid = 0;
5565 sp->cls2.classValid = 0;
5566 sp->cls3.classValid = 0;
5567 sp->cls4.classValid = 0;
5568
5569 /* Copy our worldwide names */
5570 memcpy(&sp->portName, &vport->fc_sparam.portName,
5571 sizeof(struct lpfc_name));
5572 memcpy(&sp->nodeName, &vport->fc_sparam.nodeName,
5573 sizeof(struct lpfc_name));
5574 } else {
5575 memcpy(pcmd, &vport->fc_sparam,
5576 sizeof(struct serv_parm));
5577
5578 sp->cmn.valid_vendor_ver_level = 0;
5579 memset(sp->un.vendorVersion, 0,
5580 sizeof(sp->un.vendorVersion));
5581 sp->cmn.bbRcvSizeMsb &= 0xF;
5582
5583 /* If our firmware supports this feature, convey that
5584 * info to the target using the vendor specific field.
5585 */
5586 if (phba->sli.sli_flag & LPFC_SLI_SUPPRESS_RSP) {
5587 sp->cmn.valid_vendor_ver_level = 1;
5588 sp->un.vv.vid = cpu_to_be32(LPFC_VV_EMLX_ID);
5589 sp->un.vv.flags =
5590 cpu_to_be32(LPFC_VV_SUPPRESS_RSP);
5591 }
5592 }
5593
5594 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5595 "Issue ACC FLOGI/PLOGI: did:x%x flg:x%lx",
5596 ndlp->nlp_DID, ndlp->nlp_flag, 0);
5597 break;
5598 case ELS_CMD_PRLO:
5599 cmdsize = sizeof(uint32_t) + sizeof(PRLO);
5600 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5601 ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
5602 if (!elsiocb)
5603 return 1;
5604
5605 if (phba->sli_rev == LPFC_SLI_REV4) {
5606 wqe = &elsiocb->wqe;
5607 /* XRI / rx_id */
5608 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5609 bf_get(wqe_ctxt_tag,
5610 &oldwqe->xmit_els_rsp.wqe_com));
5611
5612 /* oxid */
5613 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5614 bf_get(wqe_rcvoxid,
5615 &oldwqe->xmit_els_rsp.wqe_com));
5616 } else {
5617 icmd = &elsiocb->iocb;
5618 oldcmd = &oldiocb->iocb;
5619 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5620 icmd->unsli3.rcvsli3.ox_id =
5621 oldcmd->unsli3.rcvsli3.ox_id;
5622 }
5623
5624 pcmd = (u8 *) elsiocb->cmd_dmabuf->virt;
5625
5626 memcpy(pcmd, oldiocb->cmd_dmabuf->virt,
5627 sizeof(uint32_t) + sizeof(PRLO));
5628 *((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
5629 els_pkt_ptr = (ELS_PKT *) pcmd;
5630 els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
5631
5632 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5633 "Issue ACC PRLO: did:x%x flg:x%lx",
5634 ndlp->nlp_DID, ndlp->nlp_flag, 0);
5635 break;
5636 case ELS_CMD_RDF:
5637 cmdsize = sizeof(*rdf_resp);
5638 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
5639 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5640 if (!elsiocb)
5641 return 1;
5642
5643 if (phba->sli_rev == LPFC_SLI_REV4) {
5644 wqe = &elsiocb->wqe;
5645 /* XRI / rx_id */
5646 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
5647 bf_get(wqe_ctxt_tag,
5648 &oldwqe->xmit_els_rsp.wqe_com));
5649
5650 /* oxid */
5651 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5652 bf_get(wqe_rcvoxid,
5653 &oldwqe->xmit_els_rsp.wqe_com));
5654 } else {
5655 icmd = &elsiocb->iocb;
5656 oldcmd = &oldiocb->iocb;
5657 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5658 icmd->unsli3.rcvsli3.ox_id =
5659 oldcmd->unsli3.rcvsli3.ox_id;
5660 }
5661
5662 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
5663 rdf_resp = (struct fc_els_rdf_resp *)pcmd;
5664 memset(rdf_resp, 0, sizeof(*rdf_resp));
5665 rdf_resp->acc_hdr.la_cmd = ELS_LS_ACC;
5666
5667 /* FC-LS-5 specifies desc_list_len shall be set to 12 */
5668 rdf_resp->desc_list_len = cpu_to_be32(12);
5669
5670 /* FC-LS-5 specifies LS REQ Information descriptor */
5671 rdf_resp->lsri.desc_tag = cpu_to_be32(1);
5672 rdf_resp->lsri.desc_len = cpu_to_be32(sizeof(u32));
5673 rdf_resp->lsri.rqst_w0.cmd = ELS_RDF;
5674 break;
5675 default:
5676 return 1;
5677 }
5678 if (test_bit(NLP_LOGO_ACC, &ndlp->nlp_flag)) {
5679 if (!test_bit(NLP_RPI_REGISTERED, &ndlp->nlp_flag) &&
5680 !test_bit(NLP_REG_LOGIN_SEND, &ndlp->nlp_flag))
5681 clear_bit(NLP_LOGO_ACC, &ndlp->nlp_flag);
5682 elsiocb->cmd_cmpl = lpfc_cmpl_els_logo_acc;
5683 } else {
5684 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5685 }
5686
5687 phba->fc_stat.elsXmitACC++;
5688 elsiocb->ndlp = lpfc_nlp_get(ndlp);
5689 if (!elsiocb->ndlp) {
5690 lpfc_els_free_iocb(phba, elsiocb);
5691 return 1;
5692 }
5693
5694 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5695 if (rc == IOCB_ERROR) {
5696 lpfc_els_free_iocb(phba, elsiocb);
5697 lpfc_nlp_put(ndlp);
5698 return 1;
5699 }
5700
5701 /* Xmit ELS ACC response tag <ulpIoTag> */
5702 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5703 "0128 Xmit ELS ACC response Status: x%x, IoTag: x%x, "
5704 "XRI: x%x, DID: x%x, nlp_flag: x%lx nlp_state: x%x "
5705 "RPI: x%x, fc_flag x%lx refcnt %d\n",
5706 rc, elsiocb->iotag, elsiocb->sli4_xritag,
5707 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5708 ndlp->nlp_rpi, vport->fc_flag, kref_read(&ndlp->kref));
5709 return 0;
5710 }
5711
5712 /**
5713 * lpfc_els_rsp_reject - Prepare and issue a rjt response iocb command
5714 * @vport: pointer to a virtual N_Port data structure.
5715 * @rejectError: reject response to issue
5716 * @oldiocb: pointer to the original lpfc command iocb data structure.
5717 * @ndlp: pointer to a node-list data structure.
5718 * @mbox: pointer to the driver internal queue element for mailbox command.
5719 *
5720 * This routine prepares and issue an Reject (RJT) response IOCB
5721 * command. If a @mbox pointer is passed in, it will be put into the
5722 * context_un.mbox field of the IOCB for the completion callback function
5723 * to issue to the HBA later.
5724 *
5725 * Note that the ndlp reference count will be incremented by 1 for holding the
5726 * ndlp and the reference to ndlp will be stored into the ndlp field of
5727 * the IOCB for the completion callback function to the reject response
5728 * ELS IOCB command.
5729 *
5730 * Return code
5731 * 0 - Successfully issued reject response
5732 * 1 - Failed to issue reject response
5733 **/
5734 int
lpfc_els_rsp_reject(struct lpfc_vport * vport,uint32_t rejectError,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp,LPFC_MBOXQ_t * mbox)5735 lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
5736 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
5737 LPFC_MBOXQ_t *mbox)
5738 {
5739 int rc;
5740 struct lpfc_hba *phba = vport->phba;
5741 IOCB_t *icmd;
5742 IOCB_t *oldcmd;
5743 union lpfc_wqe128 *wqe;
5744 struct lpfc_iocbq *elsiocb;
5745 uint8_t *pcmd;
5746 uint16_t cmdsize;
5747
5748 cmdsize = 2 * sizeof(uint32_t);
5749 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5750 ndlp->nlp_DID, ELS_CMD_LS_RJT);
5751 if (!elsiocb)
5752 return 1;
5753
5754 if (phba->sli_rev == LPFC_SLI_REV4) {
5755 wqe = &elsiocb->wqe;
5756 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5757 get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
5758 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5759 get_job_rcvoxid(phba, oldiocb));
5760 } else {
5761 icmd = &elsiocb->iocb;
5762 oldcmd = &oldiocb->iocb;
5763 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5764 icmd->unsli3.rcvsli3.ox_id = oldcmd->unsli3.rcvsli3.ox_id;
5765 }
5766
5767 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
5768
5769 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
5770 pcmd += sizeof(uint32_t);
5771 *((uint32_t *) (pcmd)) = rejectError;
5772
5773 if (mbox)
5774 elsiocb->context_un.mbox = mbox;
5775
5776 /* Xmit ELS RJT <err> response tag <ulpIoTag> */
5777 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5778 "0129 Xmit ELS RJT x%x response tag x%x "
5779 "xri x%x, did x%x, nlp_flag x%lx, nlp_state x%x, "
5780 "rpi x%x\n",
5781 rejectError, elsiocb->iotag,
5782 get_job_ulpcontext(phba, elsiocb), ndlp->nlp_DID,
5783 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
5784 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5785 "Issue LS_RJT: did:x%x flg:x%lx err:x%x",
5786 ndlp->nlp_DID, ndlp->nlp_flag, rejectError);
5787
5788 phba->fc_stat.elsXmitLSRJT++;
5789 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5790 elsiocb->ndlp = lpfc_nlp_get(ndlp);
5791 if (!elsiocb->ndlp) {
5792 lpfc_els_free_iocb(phba, elsiocb);
5793 return 1;
5794 }
5795
5796 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5797 if (rc == IOCB_ERROR) {
5798 lpfc_els_free_iocb(phba, elsiocb);
5799 lpfc_nlp_put(ndlp);
5800 return 1;
5801 }
5802
5803 return 0;
5804 }
5805
5806 /**
5807 * lpfc_issue_els_edc_rsp - Exchange Diagnostic Capabilities with the fabric.
5808 * @vport: pointer to a host virtual N_Port data structure.
5809 * @cmdiocb: pointer to the original lpfc command iocb data structure.
5810 * @ndlp: NPort to where rsp is directed
5811 *
5812 * This routine issues an EDC ACC RSP to the F-Port Controller to communicate
5813 * this N_Port's support of hardware signals in its Congestion
5814 * Capabilities Descriptor.
5815 *
5816 * Return code
5817 * 0 - Successfully issued edc rsp command
5818 * 1 - Failed to issue edc rsp command
5819 **/
5820 static int
lpfc_issue_els_edc_rsp(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)5821 lpfc_issue_els_edc_rsp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
5822 struct lpfc_nodelist *ndlp)
5823 {
5824 struct lpfc_hba *phba = vport->phba;
5825 struct fc_els_edc_resp *edc_rsp;
5826 struct fc_tlv_desc *tlv;
5827 struct lpfc_iocbq *elsiocb;
5828 IOCB_t *icmd, *cmd;
5829 union lpfc_wqe128 *wqe;
5830 u32 cgn_desc_size, lft_desc_size;
5831 u16 cmdsize;
5832 uint8_t *pcmd;
5833 int rc;
5834
5835 cmdsize = sizeof(struct fc_els_edc_resp);
5836 cgn_desc_size = sizeof(struct fc_diag_cg_sig_desc);
5837 lft_desc_size = (lpfc_link_is_lds_capable(phba)) ?
5838 sizeof(struct fc_diag_lnkflt_desc) : 0;
5839 cmdsize += cgn_desc_size + lft_desc_size;
5840 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, cmdiocb->retry,
5841 ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
5842 if (!elsiocb)
5843 return 1;
5844
5845 if (phba->sli_rev == LPFC_SLI_REV4) {
5846 wqe = &elsiocb->wqe;
5847 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5848 get_job_ulpcontext(phba, cmdiocb)); /* Xri / rx_id */
5849 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5850 get_job_rcvoxid(phba, cmdiocb));
5851 } else {
5852 icmd = &elsiocb->iocb;
5853 cmd = &cmdiocb->iocb;
5854 icmd->ulpContext = cmd->ulpContext; /* Xri / rx_id */
5855 icmd->unsli3.rcvsli3.ox_id = cmd->unsli3.rcvsli3.ox_id;
5856 }
5857
5858 pcmd = elsiocb->cmd_dmabuf->virt;
5859 memset(pcmd, 0, cmdsize);
5860
5861 edc_rsp = (struct fc_els_edc_resp *)pcmd;
5862 edc_rsp->acc_hdr.la_cmd = ELS_LS_ACC;
5863 edc_rsp->desc_list_len = cpu_to_be32(sizeof(struct fc_els_lsri_desc) +
5864 cgn_desc_size + lft_desc_size);
5865 edc_rsp->lsri.desc_tag = cpu_to_be32(ELS_DTAG_LS_REQ_INFO);
5866 edc_rsp->lsri.desc_len = cpu_to_be32(
5867 FC_TLV_DESC_LENGTH_FROM_SZ(struct fc_els_lsri_desc));
5868 edc_rsp->lsri.rqst_w0.cmd = ELS_EDC;
5869 tlv = edc_rsp->desc;
5870 lpfc_format_edc_cgn_desc(phba, tlv);
5871 tlv = fc_tlv_next_desc(tlv);
5872 if (lft_desc_size)
5873 lpfc_format_edc_lft_desc(phba, tlv);
5874
5875 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5876 "Issue EDC ACC: did:x%x flg:x%lx refcnt %d",
5877 ndlp->nlp_DID, ndlp->nlp_flag,
5878 kref_read(&ndlp->kref));
5879 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5880
5881 phba->fc_stat.elsXmitACC++;
5882 elsiocb->ndlp = lpfc_nlp_get(ndlp);
5883 if (!elsiocb->ndlp) {
5884 lpfc_els_free_iocb(phba, elsiocb);
5885 return 1;
5886 }
5887
5888 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5889 if (rc == IOCB_ERROR) {
5890 lpfc_els_free_iocb(phba, elsiocb);
5891 lpfc_nlp_put(ndlp);
5892 return 1;
5893 }
5894
5895 /* Xmit ELS ACC response tag <ulpIoTag> */
5896 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5897 "0152 Xmit EDC ACC response Status: x%x, IoTag: x%x, "
5898 "XRI: x%x, DID: x%x, nlp_flag: x%lx nlp_state: x%x "
5899 "RPI: x%x, fc_flag x%lx\n",
5900 rc, elsiocb->iotag, elsiocb->sli4_xritag,
5901 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5902 ndlp->nlp_rpi, vport->fc_flag);
5903
5904 return 0;
5905 }
5906
5907 /**
5908 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
5909 * @vport: pointer to a virtual N_Port data structure.
5910 * @oldiocb: pointer to the original lpfc command iocb data structure.
5911 * @ndlp: pointer to a node-list data structure.
5912 *
5913 * This routine prepares and issues an Accept (ACC) response to Address
5914 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
5915 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
5916 *
5917 * Note that the ndlp reference count will be incremented by 1 for holding the
5918 * ndlp and the reference to ndlp will be stored into the ndlp field of
5919 * the IOCB for the completion callback function to the ADISC Accept response
5920 * ELS IOCB command.
5921 *
5922 * Return code
5923 * 0 - Successfully issued acc adisc response
5924 * 1 - Failed to issue adisc acc response
5925 **/
5926 int
lpfc_els_rsp_adisc_acc(struct lpfc_vport * vport,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)5927 lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
5928 struct lpfc_nodelist *ndlp)
5929 {
5930 struct lpfc_hba *phba = vport->phba;
5931 ADISC *ap;
5932 IOCB_t *icmd, *oldcmd;
5933 union lpfc_wqe128 *wqe;
5934 struct lpfc_iocbq *elsiocb;
5935 uint8_t *pcmd;
5936 uint16_t cmdsize;
5937 int rc;
5938 u32 ulp_context;
5939
5940 cmdsize = sizeof(uint32_t) + sizeof(ADISC);
5941 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
5942 ndlp->nlp_DID, ELS_CMD_ACC);
5943 if (!elsiocb)
5944 return 1;
5945
5946 if (phba->sli_rev == LPFC_SLI_REV4) {
5947 wqe = &elsiocb->wqe;
5948 /* XRI / rx_id */
5949 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
5950 get_job_ulpcontext(phba, oldiocb));
5951 ulp_context = get_job_ulpcontext(phba, elsiocb);
5952 /* oxid */
5953 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
5954 get_job_rcvoxid(phba, oldiocb));
5955 } else {
5956 icmd = &elsiocb->iocb;
5957 oldcmd = &oldiocb->iocb;
5958 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
5959 ulp_context = elsiocb->iocb.ulpContext;
5960 icmd->unsli3.rcvsli3.ox_id =
5961 oldcmd->unsli3.rcvsli3.ox_id;
5962 }
5963
5964 /* Xmit ADISC ACC response tag <ulpIoTag> */
5965 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
5966 "0130 Xmit ADISC ACC response iotag x%x xri: "
5967 "x%x, did x%x, nlp_flag x%lx, nlp_state x%x rpi x%x\n",
5968 elsiocb->iotag, ulp_context,
5969 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
5970 ndlp->nlp_rpi);
5971 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
5972
5973 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5974 pcmd += sizeof(uint32_t);
5975
5976 ap = (ADISC *) (pcmd);
5977 ap->hardAL_PA = phba->fc_pref_ALPA;
5978 memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
5979 memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
5980 ap->DID = be32_to_cpu(vport->fc_myDID);
5981
5982 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
5983 "Issue ACC ADISC: did:x%x flg:x%lx refcnt %d",
5984 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
5985
5986 phba->fc_stat.elsXmitACC++;
5987 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
5988 elsiocb->ndlp = lpfc_nlp_get(ndlp);
5989 if (!elsiocb->ndlp) {
5990 lpfc_els_free_iocb(phba, elsiocb);
5991 return 1;
5992 }
5993
5994 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
5995 if (rc == IOCB_ERROR) {
5996 lpfc_els_free_iocb(phba, elsiocb);
5997 lpfc_nlp_put(ndlp);
5998 return 1;
5999 }
6000
6001 return 0;
6002 }
6003
6004 /**
6005 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
6006 * @vport: pointer to a virtual N_Port data structure.
6007 * @oldiocb: pointer to the original lpfc command iocb data structure.
6008 * @ndlp: pointer to a node-list data structure.
6009 *
6010 * This routine prepares and issues an Accept (ACC) response to Process
6011 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
6012 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
6013 *
6014 * Note that the ndlp reference count will be incremented by 1 for holding the
6015 * ndlp and the reference to ndlp will be stored into the ndlp field of
6016 * the IOCB for the completion callback function to the PRLI Accept response
6017 * ELS IOCB command.
6018 *
6019 * Return code
6020 * 0 - Successfully issued acc prli response
6021 * 1 - Failed to issue acc prli response
6022 **/
6023 int
lpfc_els_rsp_prli_acc(struct lpfc_vport * vport,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)6024 lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
6025 struct lpfc_nodelist *ndlp)
6026 {
6027 struct lpfc_hba *phba = vport->phba;
6028 PRLI *npr;
6029 struct lpfc_nvme_prli *npr_nvme;
6030 lpfc_vpd_t *vpd;
6031 IOCB_t *icmd;
6032 IOCB_t *oldcmd;
6033 union lpfc_wqe128 *wqe;
6034 struct lpfc_iocbq *elsiocb;
6035 uint8_t *pcmd;
6036 uint16_t cmdsize;
6037 uint32_t prli_fc4_req, *req_payload;
6038 struct lpfc_dmabuf *req_buf;
6039 int rc;
6040 u32 elsrspcmd, ulp_context;
6041
6042 /* Need the incoming PRLI payload to determine if the ACC is for an
6043 * FC4 or NVME PRLI type. The PRLI type is at word 1.
6044 */
6045 req_buf = oldiocb->cmd_dmabuf;
6046 req_payload = (((uint32_t *)req_buf->virt) + 1);
6047
6048 /* PRLI type payload is at byte 3 for FCP or NVME. */
6049 prli_fc4_req = be32_to_cpu(*req_payload);
6050 prli_fc4_req = (prli_fc4_req >> 24) & 0xff;
6051 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6052 "6127 PRLI_ACC: Req Type x%x, Word1 x%08x\n",
6053 prli_fc4_req, *((uint32_t *)req_payload));
6054
6055 if (prli_fc4_req == PRLI_FCP_TYPE) {
6056 cmdsize = sizeof(uint32_t) + sizeof(PRLI);
6057 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
6058 } else if (prli_fc4_req == PRLI_NVME_TYPE) {
6059 cmdsize = sizeof(uint32_t) + sizeof(struct lpfc_nvme_prli);
6060 elsrspcmd = (ELS_CMD_ACC | (ELS_CMD_NVMEPRLI & ~ELS_RSP_MASK));
6061 } else {
6062 return 1;
6063 }
6064
6065 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6066 ndlp->nlp_DID, elsrspcmd);
6067 if (!elsiocb)
6068 return 1;
6069
6070 if (phba->sli_rev == LPFC_SLI_REV4) {
6071 wqe = &elsiocb->wqe;
6072 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6073 get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6074 ulp_context = get_job_ulpcontext(phba, elsiocb);
6075 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6076 get_job_rcvoxid(phba, oldiocb));
6077 } else {
6078 icmd = &elsiocb->iocb;
6079 oldcmd = &oldiocb->iocb;
6080 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6081 ulp_context = elsiocb->iocb.ulpContext;
6082 icmd->unsli3.rcvsli3.ox_id =
6083 oldcmd->unsli3.rcvsli3.ox_id;
6084 }
6085
6086 /* Xmit PRLI ACC response tag <ulpIoTag> */
6087 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6088 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
6089 "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x\n",
6090 elsiocb->iotag, ulp_context,
6091 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
6092 ndlp->nlp_rpi);
6093 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6094 memset(pcmd, 0, cmdsize);
6095
6096 *((uint32_t *)(pcmd)) = elsrspcmd;
6097 pcmd += sizeof(uint32_t);
6098
6099 /* For PRLI, remainder of payload is PRLI parameter page */
6100 vpd = &phba->vpd;
6101
6102 if (prli_fc4_req == PRLI_FCP_TYPE) {
6103 /*
6104 * If the remote port is a target and our firmware version
6105 * is 3.20 or later, set the following bits for FC-TAPE
6106 * support.
6107 */
6108 npr = (PRLI *) pcmd;
6109 if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
6110 (vpd->rev.feaLevelHigh >= 0x02)) {
6111 npr->ConfmComplAllowed = 1;
6112 npr->Retry = 1;
6113 npr->TaskRetryIdReq = 1;
6114 }
6115 npr->acceptRspCode = PRLI_REQ_EXECUTED;
6116
6117 /* Set image pair for complementary pairs only. */
6118 if (ndlp->nlp_type & NLP_FCP_TARGET)
6119 npr->estabImagePair = 1;
6120 else
6121 npr->estabImagePair = 0;
6122 npr->readXferRdyDis = 1;
6123 npr->ConfmComplAllowed = 1;
6124 npr->prliType = PRLI_FCP_TYPE;
6125 npr->initiatorFunc = 1;
6126
6127 /* Xmit PRLI ACC response tag <ulpIoTag> */
6128 lpfc_printf_vlog(vport, KERN_INFO,
6129 LOG_ELS | LOG_NODE | LOG_DISCOVERY,
6130 "6014 FCP issue PRLI ACC imgpair %d "
6131 "retry %d task %d\n",
6132 npr->estabImagePair,
6133 npr->Retry, npr->TaskRetryIdReq);
6134
6135 } else if (prli_fc4_req == PRLI_NVME_TYPE) {
6136 /* Respond with an NVME PRLI Type */
6137 npr_nvme = (struct lpfc_nvme_prli *) pcmd;
6138 bf_set(prli_type_code, npr_nvme, PRLI_NVME_TYPE);
6139 bf_set(prli_estabImagePair, npr_nvme, 0); /* Should be 0 */
6140 bf_set(prli_acc_rsp_code, npr_nvme, PRLI_REQ_EXECUTED);
6141 if (phba->nvmet_support) {
6142 bf_set(prli_tgt, npr_nvme, 1);
6143 bf_set(prli_disc, npr_nvme, 1);
6144 if (phba->cfg_nvme_enable_fb) {
6145 bf_set(prli_fba, npr_nvme, 1);
6146
6147 /* TBD. Target mode needs to post buffers
6148 * that support the configured first burst
6149 * byte size.
6150 */
6151 bf_set(prli_fb_sz, npr_nvme,
6152 phba->cfg_nvmet_fb_size);
6153 }
6154 } else {
6155 bf_set(prli_init, npr_nvme, 1);
6156 }
6157
6158 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
6159 "6015 NVME issue PRLI ACC word1 x%08x "
6160 "word4 x%08x word5 x%08x flag x%lx, "
6161 "fcp_info x%x nlp_type x%x\n",
6162 npr_nvme->word1, npr_nvme->word4,
6163 npr_nvme->word5, ndlp->nlp_flag,
6164 ndlp->nlp_fcp_info, ndlp->nlp_type);
6165 npr_nvme->word1 = cpu_to_be32(npr_nvme->word1);
6166 npr_nvme->word4 = cpu_to_be32(npr_nvme->word4);
6167 npr_nvme->word5 = cpu_to_be32(npr_nvme->word5);
6168 } else
6169 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6170 "6128 Unknown FC_TYPE x%x x%x ndlp x%06x\n",
6171 prli_fc4_req, ndlp->nlp_fc4_type,
6172 ndlp->nlp_DID);
6173
6174 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6175 "Issue ACC PRLI: did:x%x flg:x%lx",
6176 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6177
6178 phba->fc_stat.elsXmitACC++;
6179 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6180 elsiocb->ndlp = lpfc_nlp_get(ndlp);
6181 if (!elsiocb->ndlp) {
6182 lpfc_els_free_iocb(phba, elsiocb);
6183 return 1;
6184 }
6185
6186 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6187 if (rc == IOCB_ERROR) {
6188 lpfc_els_free_iocb(phba, elsiocb);
6189 lpfc_nlp_put(ndlp);
6190 return 1;
6191 }
6192
6193 return 0;
6194 }
6195
6196 /**
6197 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
6198 * @vport: pointer to a virtual N_Port data structure.
6199 * @format: rnid command format.
6200 * @oldiocb: pointer to the original lpfc command iocb data structure.
6201 * @ndlp: pointer to a node-list data structure.
6202 *
6203 * This routine issues a Request Node Identification Data (RNID) Accept
6204 * (ACC) response. It constructs the RNID ACC response command according to
6205 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
6206 * issue the response.
6207 *
6208 * Note that the ndlp reference count will be incremented by 1 for holding the
6209 * ndlp and the reference to ndlp will be stored into the ndlp field of
6210 * the IOCB for the completion callback function.
6211 *
6212 * Return code
6213 * 0 - Successfully issued acc rnid response
6214 * 1 - Failed to issue acc rnid response
6215 **/
6216 static int
lpfc_els_rsp_rnid_acc(struct lpfc_vport * vport,uint8_t format,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)6217 lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
6218 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
6219 {
6220 struct lpfc_hba *phba = vport->phba;
6221 RNID *rn;
6222 IOCB_t *icmd, *oldcmd;
6223 union lpfc_wqe128 *wqe;
6224 struct lpfc_iocbq *elsiocb;
6225 uint8_t *pcmd;
6226 uint16_t cmdsize;
6227 int rc;
6228 u32 ulp_context;
6229
6230 cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
6231 + (2 * sizeof(struct lpfc_name));
6232 if (format)
6233 cmdsize += sizeof(RNID_TOP_DISC);
6234
6235 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6236 ndlp->nlp_DID, ELS_CMD_ACC);
6237 if (!elsiocb)
6238 return 1;
6239
6240 if (phba->sli_rev == LPFC_SLI_REV4) {
6241 wqe = &elsiocb->wqe;
6242 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6243 get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6244 ulp_context = get_job_ulpcontext(phba, elsiocb);
6245 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6246 get_job_rcvoxid(phba, oldiocb));
6247 } else {
6248 icmd = &elsiocb->iocb;
6249 oldcmd = &oldiocb->iocb;
6250 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6251 ulp_context = elsiocb->iocb.ulpContext;
6252 icmd->unsli3.rcvsli3.ox_id =
6253 oldcmd->unsli3.rcvsli3.ox_id;
6254 }
6255
6256 /* Xmit RNID ACC response tag <ulpIoTag> */
6257 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6258 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
6259 elsiocb->iotag, ulp_context);
6260 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6261 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
6262 pcmd += sizeof(uint32_t);
6263
6264 memset(pcmd, 0, sizeof(RNID));
6265 rn = (RNID *) (pcmd);
6266 rn->Format = format;
6267 rn->CommonLen = (2 * sizeof(struct lpfc_name));
6268 memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
6269 memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
6270 switch (format) {
6271 case 0:
6272 rn->SpecificLen = 0;
6273 break;
6274 case RNID_TOPOLOGY_DISC:
6275 rn->SpecificLen = sizeof(RNID_TOP_DISC);
6276 memcpy(&rn->un.topologyDisc.portName,
6277 &vport->fc_portname, sizeof(struct lpfc_name));
6278 rn->un.topologyDisc.unitType = RNID_HBA;
6279 rn->un.topologyDisc.physPort = 0;
6280 rn->un.topologyDisc.attachedNodes = 0;
6281 break;
6282 default:
6283 rn->CommonLen = 0;
6284 rn->SpecificLen = 0;
6285 break;
6286 }
6287
6288 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6289 "Issue ACC RNID: did:x%x flg:x%lx refcnt %d",
6290 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6291
6292 phba->fc_stat.elsXmitACC++;
6293 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6294 elsiocb->ndlp = lpfc_nlp_get(ndlp);
6295 if (!elsiocb->ndlp) {
6296 lpfc_els_free_iocb(phba, elsiocb);
6297 return 1;
6298 }
6299
6300 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6301 if (rc == IOCB_ERROR) {
6302 lpfc_els_free_iocb(phba, elsiocb);
6303 lpfc_nlp_put(ndlp);
6304 return 1;
6305 }
6306
6307 return 0;
6308 }
6309
6310 /**
6311 * lpfc_els_clear_rrq - Clear the rq that this rrq describes.
6312 * @vport: pointer to a virtual N_Port data structure.
6313 * @iocb: pointer to the lpfc command iocb data structure.
6314 * @ndlp: pointer to a node-list data structure.
6315 *
6316 * Return
6317 **/
6318 static void
lpfc_els_clear_rrq(struct lpfc_vport * vport,struct lpfc_iocbq * iocb,struct lpfc_nodelist * ndlp)6319 lpfc_els_clear_rrq(struct lpfc_vport *vport,
6320 struct lpfc_iocbq *iocb, struct lpfc_nodelist *ndlp)
6321 {
6322 struct lpfc_hba *phba = vport->phba;
6323 uint8_t *pcmd;
6324 struct RRQ *rrq;
6325 uint16_t rxid;
6326 uint16_t xri;
6327 struct lpfc_node_rrq *prrq;
6328
6329
6330 pcmd = (uint8_t *)iocb->cmd_dmabuf->virt;
6331 pcmd += sizeof(uint32_t);
6332 rrq = (struct RRQ *)pcmd;
6333 rrq->rrq_exchg = be32_to_cpu(rrq->rrq_exchg);
6334 rxid = bf_get(rrq_rxid, rrq);
6335
6336 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6337 "2883 Clear RRQ for SID:x%x OXID:x%x RXID:x%x"
6338 " x%x x%x\n",
6339 be32_to_cpu(bf_get(rrq_did, rrq)),
6340 bf_get(rrq_oxid, rrq),
6341 rxid,
6342 get_wqe_reqtag(iocb),
6343 get_job_ulpcontext(phba, iocb));
6344
6345 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6346 "Clear RRQ: did:x%x flg:x%lx exchg:x%.08x",
6347 ndlp->nlp_DID, ndlp->nlp_flag, rrq->rrq_exchg);
6348 if (vport->fc_myDID == be32_to_cpu(bf_get(rrq_did, rrq)))
6349 xri = bf_get(rrq_oxid, rrq);
6350 else
6351 xri = rxid;
6352 prrq = lpfc_get_active_rrq(vport, xri, ndlp->nlp_DID);
6353 if (prrq)
6354 lpfc_clr_rrq_active(phba, xri, prrq);
6355 return;
6356 }
6357
6358 /**
6359 * lpfc_els_rsp_echo_acc - Issue echo acc response
6360 * @vport: pointer to a virtual N_Port data structure.
6361 * @data: pointer to echo data to return in the accept.
6362 * @oldiocb: pointer to the original lpfc command iocb data structure.
6363 * @ndlp: pointer to a node-list data structure.
6364 *
6365 * Return code
6366 * 0 - Successfully issued acc echo response
6367 * 1 - Failed to issue acc echo response
6368 **/
6369 static int
lpfc_els_rsp_echo_acc(struct lpfc_vport * vport,uint8_t * data,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)6370 lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
6371 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
6372 {
6373 struct lpfc_hba *phba = vport->phba;
6374 IOCB_t *icmd, *oldcmd;
6375 union lpfc_wqe128 *wqe;
6376 struct lpfc_iocbq *elsiocb;
6377 uint8_t *pcmd;
6378 uint16_t cmdsize;
6379 int rc;
6380 u32 ulp_context;
6381
6382 if (phba->sli_rev == LPFC_SLI_REV4)
6383 cmdsize = oldiocb->wcqe_cmpl.total_data_placed;
6384 else
6385 cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;
6386
6387 /* The accumulated length can exceed the BPL_SIZE. For
6388 * now, use this as the limit
6389 */
6390 if (cmdsize > LPFC_BPL_SIZE)
6391 cmdsize = LPFC_BPL_SIZE;
6392 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
6393 ndlp->nlp_DID, ELS_CMD_ACC);
6394 if (!elsiocb)
6395 return 1;
6396
6397 if (phba->sli_rev == LPFC_SLI_REV4) {
6398 wqe = &elsiocb->wqe;
6399 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
6400 get_job_ulpcontext(phba, oldiocb)); /* Xri / rx_id */
6401 ulp_context = get_job_ulpcontext(phba, elsiocb);
6402 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
6403 get_job_rcvoxid(phba, oldiocb));
6404 } else {
6405 icmd = &elsiocb->iocb;
6406 oldcmd = &oldiocb->iocb;
6407 icmd->ulpContext = oldcmd->ulpContext; /* Xri / rx_id */
6408 ulp_context = elsiocb->iocb.ulpContext;
6409 icmd->unsli3.rcvsli3.ox_id =
6410 oldcmd->unsli3.rcvsli3.ox_id;
6411 }
6412
6413 /* Xmit ECHO ACC response tag <ulpIoTag> */
6414 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
6415 "2876 Xmit ECHO ACC response tag x%x xri x%x\n",
6416 elsiocb->iotag, ulp_context);
6417 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
6418 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
6419 pcmd += sizeof(uint32_t);
6420 memcpy(pcmd, data, cmdsize - sizeof(uint32_t));
6421
6422 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
6423 "Issue ACC ECHO: did:x%x flg:x%lx refcnt %d",
6424 ndlp->nlp_DID, ndlp->nlp_flag, kref_read(&ndlp->kref));
6425
6426 phba->fc_stat.elsXmitACC++;
6427 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
6428 elsiocb->ndlp = lpfc_nlp_get(ndlp);
6429 if (!elsiocb->ndlp) {
6430 lpfc_els_free_iocb(phba, elsiocb);
6431 return 1;
6432 }
6433
6434 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
6435 if (rc == IOCB_ERROR) {
6436 lpfc_els_free_iocb(phba, elsiocb);
6437 lpfc_nlp_put(ndlp);
6438 return 1;
6439 }
6440
6441 return 0;
6442 }
6443
6444 /**
6445 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
6446 * @vport: pointer to a host virtual N_Port data structure.
6447 *
6448 * This routine issues Address Discover (ADISC) ELS commands to those
6449 * N_Ports which are in node port recovery state and ADISC has not been issued
6450 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
6451 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
6452 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
6453 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
6454 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
6455 * IOCBs quit for later pick up. On the other hand, after walking through
6456 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
6457 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
6458 * no more ADISC need to be sent.
6459 *
6460 * Return code
6461 * The number of N_Ports with adisc issued.
6462 **/
6463 int
lpfc_els_disc_adisc(struct lpfc_vport * vport)6464 lpfc_els_disc_adisc(struct lpfc_vport *vport)
6465 {
6466 struct lpfc_nodelist *ndlp, *next_ndlp;
6467 int sentadisc = 0;
6468
6469 /* go thru NPR nodes and issue any remaining ELS ADISCs */
6470 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
6471
6472 if (ndlp->nlp_state != NLP_STE_NPR_NODE ||
6473 !test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag))
6474 continue;
6475
6476 clear_bit(NLP_NPR_ADISC, &ndlp->nlp_flag);
6477
6478 if (!test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag)) {
6479 /* This node was marked for ADISC but was not picked
6480 * for discovery. This is possible if the node was
6481 * missing in gidft response.
6482 *
6483 * At time of marking node for ADISC, we skipped unreg
6484 * from backend
6485 */
6486 lpfc_nlp_unreg_node(vport, ndlp);
6487 lpfc_unreg_rpi(vport, ndlp);
6488 continue;
6489 }
6490
6491 ndlp->nlp_prev_state = ndlp->nlp_state;
6492 lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
6493 lpfc_issue_els_adisc(vport, ndlp, 0);
6494 sentadisc++;
6495 vport->num_disc_nodes++;
6496 if (vport->num_disc_nodes >=
6497 vport->cfg_discovery_threads) {
6498 set_bit(FC_NLP_MORE, &vport->fc_flag);
6499 break;
6500 }
6501
6502 }
6503 if (sentadisc == 0)
6504 clear_bit(FC_NLP_MORE, &vport->fc_flag);
6505 return sentadisc;
6506 }
6507
6508 /**
6509 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
6510 * @vport: pointer to a host virtual N_Port data structure.
6511 *
6512 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
6513 * which are in node port recovery state, with a @vport. Each time an ELS
6514 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
6515 * the per @vport number of discover count (num_disc_nodes) shall be
6516 * incremented. If the num_disc_nodes reaches a pre-configured threshold
6517 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
6518 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
6519 * later pick up. On the other hand, after walking through all the ndlps with
6520 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
6521 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
6522 * PLOGI need to be sent.
6523 *
6524 * Return code
6525 * The number of N_Ports with plogi issued.
6526 **/
6527 int
lpfc_els_disc_plogi(struct lpfc_vport * vport)6528 lpfc_els_disc_plogi(struct lpfc_vport *vport)
6529 {
6530 struct lpfc_nodelist *ndlp, *next_ndlp;
6531 int sentplogi = 0;
6532
6533 /* go thru NPR nodes and issue any remaining ELS PLOGIs */
6534 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
6535 if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
6536 test_bit(NLP_NPR_2B_DISC, &ndlp->nlp_flag) &&
6537 !test_bit(NLP_DELAY_TMO, &ndlp->nlp_flag) &&
6538 !test_bit(NLP_NPR_ADISC, &ndlp->nlp_flag)) {
6539 ndlp->nlp_prev_state = ndlp->nlp_state;
6540 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
6541 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
6542 sentplogi++;
6543 vport->num_disc_nodes++;
6544 if (vport->num_disc_nodes >=
6545 vport->cfg_discovery_threads) {
6546 set_bit(FC_NLP_MORE, &vport->fc_flag);
6547 break;
6548 }
6549 }
6550 }
6551
6552 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
6553 "6452 Discover PLOGI %d flag x%lx\n",
6554 sentplogi, vport->fc_flag);
6555
6556 if (sentplogi)
6557 lpfc_set_disctmo(vport);
6558 else
6559 clear_bit(FC_NLP_MORE, &vport->fc_flag);
6560 return sentplogi;
6561 }
6562
6563 static uint32_t
lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc * desc,uint32_t word0)6564 lpfc_rdp_res_link_service(struct fc_rdp_link_service_desc *desc,
6565 uint32_t word0)
6566 {
6567
6568 desc->tag = cpu_to_be32(RDP_LINK_SERVICE_DESC_TAG);
6569 desc->payload.els_req = word0;
6570 desc->length = cpu_to_be32(sizeof(desc->payload));
6571
6572 return sizeof(struct fc_rdp_link_service_desc);
6573 }
6574
6575 static uint32_t
lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc * desc,uint8_t * page_a0,uint8_t * page_a2)6576 lpfc_rdp_res_sfp_desc(struct fc_rdp_sfp_desc *desc,
6577 uint8_t *page_a0, uint8_t *page_a2)
6578 {
6579 uint16_t wavelength;
6580 uint16_t temperature;
6581 uint16_t rx_power;
6582 uint16_t tx_bias;
6583 uint16_t tx_power;
6584 uint16_t vcc;
6585 uint16_t flag = 0;
6586 struct sff_trasnceiver_codes_byte4 *trasn_code_byte4;
6587 struct sff_trasnceiver_codes_byte5 *trasn_code_byte5;
6588
6589 desc->tag = cpu_to_be32(RDP_SFP_DESC_TAG);
6590
6591 trasn_code_byte4 = (struct sff_trasnceiver_codes_byte4 *)
6592 &page_a0[SSF_TRANSCEIVER_CODE_B4];
6593 trasn_code_byte5 = (struct sff_trasnceiver_codes_byte5 *)
6594 &page_a0[SSF_TRANSCEIVER_CODE_B5];
6595
6596 if ((trasn_code_byte4->fc_sw_laser) ||
6597 (trasn_code_byte5->fc_sw_laser_sl) ||
6598 (trasn_code_byte5->fc_sw_laser_sn)) { /* check if its short WL */
6599 flag |= (SFP_FLAG_PT_SWLASER << SFP_FLAG_PT_SHIFT);
6600 } else if (trasn_code_byte4->fc_lw_laser) {
6601 wavelength = (page_a0[SSF_WAVELENGTH_B1] << 8) |
6602 page_a0[SSF_WAVELENGTH_B0];
6603 if (wavelength == SFP_WAVELENGTH_LC1310)
6604 flag |= SFP_FLAG_PT_LWLASER_LC1310 << SFP_FLAG_PT_SHIFT;
6605 if (wavelength == SFP_WAVELENGTH_LL1550)
6606 flag |= SFP_FLAG_PT_LWLASER_LL1550 << SFP_FLAG_PT_SHIFT;
6607 }
6608 /* check if its SFP+ */
6609 flag |= ((page_a0[SSF_IDENTIFIER] == SFF_PG0_IDENT_SFP) ?
6610 SFP_FLAG_CT_SFP_PLUS : SFP_FLAG_CT_UNKNOWN)
6611 << SFP_FLAG_CT_SHIFT;
6612
6613 /* check if its OPTICAL */
6614 flag |= ((page_a0[SSF_CONNECTOR] == SFF_PG0_CONNECTOR_LC) ?
6615 SFP_FLAG_IS_OPTICAL_PORT : 0)
6616 << SFP_FLAG_IS_OPTICAL_SHIFT;
6617
6618 temperature = (page_a2[SFF_TEMPERATURE_B1] << 8 |
6619 page_a2[SFF_TEMPERATURE_B0]);
6620 vcc = (page_a2[SFF_VCC_B1] << 8 |
6621 page_a2[SFF_VCC_B0]);
6622 tx_power = (page_a2[SFF_TXPOWER_B1] << 8 |
6623 page_a2[SFF_TXPOWER_B0]);
6624 tx_bias = (page_a2[SFF_TX_BIAS_CURRENT_B1] << 8 |
6625 page_a2[SFF_TX_BIAS_CURRENT_B0]);
6626 rx_power = (page_a2[SFF_RXPOWER_B1] << 8 |
6627 page_a2[SFF_RXPOWER_B0]);
6628 desc->sfp_info.temperature = cpu_to_be16(temperature);
6629 desc->sfp_info.rx_power = cpu_to_be16(rx_power);
6630 desc->sfp_info.tx_bias = cpu_to_be16(tx_bias);
6631 desc->sfp_info.tx_power = cpu_to_be16(tx_power);
6632 desc->sfp_info.vcc = cpu_to_be16(vcc);
6633
6634 desc->sfp_info.flags = cpu_to_be16(flag);
6635 desc->length = cpu_to_be32(sizeof(desc->sfp_info));
6636
6637 return sizeof(struct fc_rdp_sfp_desc);
6638 }
6639
6640 static uint32_t
lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc * desc,READ_LNK_VAR * stat)6641 lpfc_rdp_res_link_error(struct fc_rdp_link_error_status_desc *desc,
6642 READ_LNK_VAR *stat)
6643 {
6644 uint32_t type;
6645
6646 desc->tag = cpu_to_be32(RDP_LINK_ERROR_STATUS_DESC_TAG);
6647
6648 type = VN_PT_PHY_PF_PORT << VN_PT_PHY_SHIFT;
6649
6650 desc->info.port_type = cpu_to_be32(type);
6651
6652 desc->info.link_status.link_failure_cnt =
6653 cpu_to_be32(stat->linkFailureCnt);
6654 desc->info.link_status.loss_of_synch_cnt =
6655 cpu_to_be32(stat->lossSyncCnt);
6656 desc->info.link_status.loss_of_signal_cnt =
6657 cpu_to_be32(stat->lossSignalCnt);
6658 desc->info.link_status.primitive_seq_proto_err =
6659 cpu_to_be32(stat->primSeqErrCnt);
6660 desc->info.link_status.invalid_trans_word =
6661 cpu_to_be32(stat->invalidXmitWord);
6662 desc->info.link_status.invalid_crc_cnt = cpu_to_be32(stat->crcCnt);
6663
6664 desc->length = cpu_to_be32(sizeof(desc->info));
6665
6666 return sizeof(struct fc_rdp_link_error_status_desc);
6667 }
6668
6669 static uint32_t
lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc * desc,READ_LNK_VAR * stat,struct lpfc_vport * vport)6670 lpfc_rdp_res_bbc_desc(struct fc_rdp_bbc_desc *desc, READ_LNK_VAR *stat,
6671 struct lpfc_vport *vport)
6672 {
6673 uint32_t bbCredit;
6674
6675 desc->tag = cpu_to_be32(RDP_BBC_DESC_TAG);
6676
6677 bbCredit = vport->fc_sparam.cmn.bbCreditLsb |
6678 (vport->fc_sparam.cmn.bbCreditMsb << 8);
6679 desc->bbc_info.port_bbc = cpu_to_be32(bbCredit);
6680 if (vport->phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
6681 bbCredit = vport->phba->fc_fabparam.cmn.bbCreditLsb |
6682 (vport->phba->fc_fabparam.cmn.bbCreditMsb << 8);
6683 desc->bbc_info.attached_port_bbc = cpu_to_be32(bbCredit);
6684 } else {
6685 desc->bbc_info.attached_port_bbc = 0;
6686 }
6687
6688 desc->bbc_info.rtt = 0;
6689 desc->length = cpu_to_be32(sizeof(desc->bbc_info));
6690
6691 return sizeof(struct fc_rdp_bbc_desc);
6692 }
6693
6694 static uint32_t
lpfc_rdp_res_oed_temp_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)6695 lpfc_rdp_res_oed_temp_desc(struct lpfc_hba *phba,
6696 struct fc_rdp_oed_sfp_desc *desc, uint8_t *page_a2)
6697 {
6698 uint32_t flags = 0;
6699
6700 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6701
6702 desc->oed_info.hi_alarm = page_a2[SSF_TEMP_HIGH_ALARM];
6703 desc->oed_info.lo_alarm = page_a2[SSF_TEMP_LOW_ALARM];
6704 desc->oed_info.hi_warning = page_a2[SSF_TEMP_HIGH_WARNING];
6705 desc->oed_info.lo_warning = page_a2[SSF_TEMP_LOW_WARNING];
6706
6707 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
6708 flags |= RDP_OET_HIGH_ALARM;
6709 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
6710 flags |= RDP_OET_LOW_ALARM;
6711 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TEMPERATURE)
6712 flags |= RDP_OET_HIGH_WARNING;
6713 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TEMPERATURE)
6714 flags |= RDP_OET_LOW_WARNING;
6715
6716 flags |= ((0xf & RDP_OED_TEMPERATURE) << RDP_OED_TYPE_SHIFT);
6717 desc->oed_info.function_flags = cpu_to_be32(flags);
6718 desc->length = cpu_to_be32(sizeof(desc->oed_info));
6719 return sizeof(struct fc_rdp_oed_sfp_desc);
6720 }
6721
6722 static uint32_t
lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)6723 lpfc_rdp_res_oed_voltage_desc(struct lpfc_hba *phba,
6724 struct fc_rdp_oed_sfp_desc *desc,
6725 uint8_t *page_a2)
6726 {
6727 uint32_t flags = 0;
6728
6729 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6730
6731 desc->oed_info.hi_alarm = page_a2[SSF_VOLTAGE_HIGH_ALARM];
6732 desc->oed_info.lo_alarm = page_a2[SSF_VOLTAGE_LOW_ALARM];
6733 desc->oed_info.hi_warning = page_a2[SSF_VOLTAGE_HIGH_WARNING];
6734 desc->oed_info.lo_warning = page_a2[SSF_VOLTAGE_LOW_WARNING];
6735
6736 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
6737 flags |= RDP_OET_HIGH_ALARM;
6738 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_VOLTAGE)
6739 flags |= RDP_OET_LOW_ALARM;
6740 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_VOLTAGE)
6741 flags |= RDP_OET_HIGH_WARNING;
6742 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_VOLTAGE)
6743 flags |= RDP_OET_LOW_WARNING;
6744
6745 flags |= ((0xf & RDP_OED_VOLTAGE) << RDP_OED_TYPE_SHIFT);
6746 desc->oed_info.function_flags = cpu_to_be32(flags);
6747 desc->length = cpu_to_be32(sizeof(desc->oed_info));
6748 return sizeof(struct fc_rdp_oed_sfp_desc);
6749 }
6750
6751 static uint32_t
lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)6752 lpfc_rdp_res_oed_txbias_desc(struct lpfc_hba *phba,
6753 struct fc_rdp_oed_sfp_desc *desc,
6754 uint8_t *page_a2)
6755 {
6756 uint32_t flags = 0;
6757
6758 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6759
6760 desc->oed_info.hi_alarm = page_a2[SSF_BIAS_HIGH_ALARM];
6761 desc->oed_info.lo_alarm = page_a2[SSF_BIAS_LOW_ALARM];
6762 desc->oed_info.hi_warning = page_a2[SSF_BIAS_HIGH_WARNING];
6763 desc->oed_info.lo_warning = page_a2[SSF_BIAS_LOW_WARNING];
6764
6765 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXBIAS)
6766 flags |= RDP_OET_HIGH_ALARM;
6767 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXBIAS)
6768 flags |= RDP_OET_LOW_ALARM;
6769 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXBIAS)
6770 flags |= RDP_OET_HIGH_WARNING;
6771 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXBIAS)
6772 flags |= RDP_OET_LOW_WARNING;
6773
6774 flags |= ((0xf & RDP_OED_TXBIAS) << RDP_OED_TYPE_SHIFT);
6775 desc->oed_info.function_flags = cpu_to_be32(flags);
6776 desc->length = cpu_to_be32(sizeof(desc->oed_info));
6777 return sizeof(struct fc_rdp_oed_sfp_desc);
6778 }
6779
6780 static uint32_t
lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)6781 lpfc_rdp_res_oed_txpower_desc(struct lpfc_hba *phba,
6782 struct fc_rdp_oed_sfp_desc *desc,
6783 uint8_t *page_a2)
6784 {
6785 uint32_t flags = 0;
6786
6787 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6788
6789 desc->oed_info.hi_alarm = page_a2[SSF_TXPOWER_HIGH_ALARM];
6790 desc->oed_info.lo_alarm = page_a2[SSF_TXPOWER_LOW_ALARM];
6791 desc->oed_info.hi_warning = page_a2[SSF_TXPOWER_HIGH_WARNING];
6792 desc->oed_info.lo_warning = page_a2[SSF_TXPOWER_LOW_WARNING];
6793
6794 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_TXPOWER)
6795 flags |= RDP_OET_HIGH_ALARM;
6796 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_TXPOWER)
6797 flags |= RDP_OET_LOW_ALARM;
6798 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_TXPOWER)
6799 flags |= RDP_OET_HIGH_WARNING;
6800 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_TXPOWER)
6801 flags |= RDP_OET_LOW_WARNING;
6802
6803 flags |= ((0xf & RDP_OED_TXPOWER) << RDP_OED_TYPE_SHIFT);
6804 desc->oed_info.function_flags = cpu_to_be32(flags);
6805 desc->length = cpu_to_be32(sizeof(desc->oed_info));
6806 return sizeof(struct fc_rdp_oed_sfp_desc);
6807 }
6808
6809
6810 static uint32_t
lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba * phba,struct fc_rdp_oed_sfp_desc * desc,uint8_t * page_a2)6811 lpfc_rdp_res_oed_rxpower_desc(struct lpfc_hba *phba,
6812 struct fc_rdp_oed_sfp_desc *desc,
6813 uint8_t *page_a2)
6814 {
6815 uint32_t flags = 0;
6816
6817 desc->tag = cpu_to_be32(RDP_OED_DESC_TAG);
6818
6819 desc->oed_info.hi_alarm = page_a2[SSF_RXPOWER_HIGH_ALARM];
6820 desc->oed_info.lo_alarm = page_a2[SSF_RXPOWER_LOW_ALARM];
6821 desc->oed_info.hi_warning = page_a2[SSF_RXPOWER_HIGH_WARNING];
6822 desc->oed_info.lo_warning = page_a2[SSF_RXPOWER_LOW_WARNING];
6823
6824 if (phba->sfp_alarm & LPFC_TRANSGRESSION_HIGH_RXPOWER)
6825 flags |= RDP_OET_HIGH_ALARM;
6826 if (phba->sfp_alarm & LPFC_TRANSGRESSION_LOW_RXPOWER)
6827 flags |= RDP_OET_LOW_ALARM;
6828 if (phba->sfp_warning & LPFC_TRANSGRESSION_HIGH_RXPOWER)
6829 flags |= RDP_OET_HIGH_WARNING;
6830 if (phba->sfp_warning & LPFC_TRANSGRESSION_LOW_RXPOWER)
6831 flags |= RDP_OET_LOW_WARNING;
6832
6833 flags |= ((0xf & RDP_OED_RXPOWER) << RDP_OED_TYPE_SHIFT);
6834 desc->oed_info.function_flags = cpu_to_be32(flags);
6835 desc->length = cpu_to_be32(sizeof(desc->oed_info));
6836 return sizeof(struct fc_rdp_oed_sfp_desc);
6837 }
6838
6839 static uint32_t
lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc * desc,uint8_t * page_a0,struct lpfc_vport * vport)6840 lpfc_rdp_res_opd_desc(struct fc_rdp_opd_sfp_desc *desc,
6841 uint8_t *page_a0, struct lpfc_vport *vport)
6842 {
6843 desc->tag = cpu_to_be32(RDP_OPD_DESC_TAG);
6844 memcpy(desc->opd_info.vendor_name, &page_a0[SSF_VENDOR_NAME], 16);
6845 memcpy(desc->opd_info.model_number, &page_a0[SSF_VENDOR_PN], 16);
6846 memcpy(desc->opd_info.serial_number, &page_a0[SSF_VENDOR_SN], 16);
6847 memcpy(desc->opd_info.revision, &page_a0[SSF_VENDOR_REV], 4);
6848 memcpy(desc->opd_info.date, &page_a0[SSF_DATE_CODE], 8);
6849 desc->length = cpu_to_be32(sizeof(desc->opd_info));
6850 return sizeof(struct fc_rdp_opd_sfp_desc);
6851 }
6852
6853 static uint32_t
lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc * desc,READ_LNK_VAR * stat)6854 lpfc_rdp_res_fec_desc(struct fc_fec_rdp_desc *desc, READ_LNK_VAR *stat)
6855 {
6856 if (bf_get(lpfc_read_link_stat_gec2, stat) == 0)
6857 return 0;
6858 desc->tag = cpu_to_be32(RDP_FEC_DESC_TAG);
6859
6860 desc->info.CorrectedBlocks =
6861 cpu_to_be32(stat->fecCorrBlkCount);
6862 desc->info.UncorrectableBlocks =
6863 cpu_to_be32(stat->fecUncorrBlkCount);
6864
6865 desc->length = cpu_to_be32(sizeof(desc->info));
6866
6867 return sizeof(struct fc_fec_rdp_desc);
6868 }
6869
6870 static uint32_t
lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc * desc,struct lpfc_hba * phba)6871 lpfc_rdp_res_speed(struct fc_rdp_port_speed_desc *desc, struct lpfc_hba *phba)
6872 {
6873 uint16_t rdp_cap = 0;
6874 uint16_t rdp_speed;
6875
6876 desc->tag = cpu_to_be32(RDP_PORT_SPEED_DESC_TAG);
6877
6878 switch (phba->fc_linkspeed) {
6879 case LPFC_LINK_SPEED_1GHZ:
6880 rdp_speed = RDP_PS_1GB;
6881 break;
6882 case LPFC_LINK_SPEED_2GHZ:
6883 rdp_speed = RDP_PS_2GB;
6884 break;
6885 case LPFC_LINK_SPEED_4GHZ:
6886 rdp_speed = RDP_PS_4GB;
6887 break;
6888 case LPFC_LINK_SPEED_8GHZ:
6889 rdp_speed = RDP_PS_8GB;
6890 break;
6891 case LPFC_LINK_SPEED_10GHZ:
6892 rdp_speed = RDP_PS_10GB;
6893 break;
6894 case LPFC_LINK_SPEED_16GHZ:
6895 rdp_speed = RDP_PS_16GB;
6896 break;
6897 case LPFC_LINK_SPEED_32GHZ:
6898 rdp_speed = RDP_PS_32GB;
6899 break;
6900 case LPFC_LINK_SPEED_64GHZ:
6901 rdp_speed = RDP_PS_64GB;
6902 break;
6903 case LPFC_LINK_SPEED_128GHZ:
6904 rdp_speed = RDP_PS_128GB;
6905 break;
6906 case LPFC_LINK_SPEED_256GHZ:
6907 rdp_speed = RDP_PS_256GB;
6908 break;
6909 default:
6910 rdp_speed = RDP_PS_UNKNOWN;
6911 break;
6912 }
6913
6914 desc->info.port_speed.speed = cpu_to_be16(rdp_speed);
6915
6916 if (phba->lmt & LMT_256Gb)
6917 rdp_cap |= RDP_PS_256GB;
6918 if (phba->lmt & LMT_128Gb)
6919 rdp_cap |= RDP_PS_128GB;
6920 if (phba->lmt & LMT_64Gb)
6921 rdp_cap |= RDP_PS_64GB;
6922 if (phba->lmt & LMT_32Gb)
6923 rdp_cap |= RDP_PS_32GB;
6924 if (phba->lmt & LMT_16Gb)
6925 rdp_cap |= RDP_PS_16GB;
6926 if (phba->lmt & LMT_10Gb)
6927 rdp_cap |= RDP_PS_10GB;
6928 if (phba->lmt & LMT_8Gb)
6929 rdp_cap |= RDP_PS_8GB;
6930 if (phba->lmt & LMT_4Gb)
6931 rdp_cap |= RDP_PS_4GB;
6932 if (phba->lmt & LMT_2Gb)
6933 rdp_cap |= RDP_PS_2GB;
6934 if (phba->lmt & LMT_1Gb)
6935 rdp_cap |= RDP_PS_1GB;
6936
6937 if (rdp_cap == 0)
6938 rdp_cap = RDP_CAP_UNKNOWN;
6939 if (phba->cfg_link_speed != LPFC_USER_LINK_SPEED_AUTO)
6940 rdp_cap |= RDP_CAP_USER_CONFIGURED;
6941
6942 desc->info.port_speed.capabilities = cpu_to_be16(rdp_cap);
6943 desc->length = cpu_to_be32(sizeof(desc->info));
6944 return sizeof(struct fc_rdp_port_speed_desc);
6945 }
6946
6947 static uint32_t
lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc * desc,struct lpfc_vport * vport)6948 lpfc_rdp_res_diag_port_names(struct fc_rdp_port_name_desc *desc,
6949 struct lpfc_vport *vport)
6950 {
6951
6952 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
6953
6954 memcpy(desc->port_names.wwnn, &vport->fc_nodename,
6955 sizeof(desc->port_names.wwnn));
6956
6957 memcpy(desc->port_names.wwpn, &vport->fc_portname,
6958 sizeof(desc->port_names.wwpn));
6959
6960 desc->length = cpu_to_be32(sizeof(desc->port_names));
6961 return sizeof(struct fc_rdp_port_name_desc);
6962 }
6963
6964 static uint32_t
lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc * desc,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)6965 lpfc_rdp_res_attach_port_names(struct fc_rdp_port_name_desc *desc,
6966 struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
6967 {
6968
6969 desc->tag = cpu_to_be32(RDP_PORT_NAMES_DESC_TAG);
6970 if (test_bit(FC_FABRIC, &vport->fc_flag)) {
6971 memcpy(desc->port_names.wwnn, &vport->fabric_nodename,
6972 sizeof(desc->port_names.wwnn));
6973
6974 memcpy(desc->port_names.wwpn, &vport->fabric_portname,
6975 sizeof(desc->port_names.wwpn));
6976 } else { /* Point to Point */
6977 memcpy(desc->port_names.wwnn, &ndlp->nlp_nodename,
6978 sizeof(desc->port_names.wwnn));
6979
6980 memcpy(desc->port_names.wwpn, &ndlp->nlp_portname,
6981 sizeof(desc->port_names.wwpn));
6982 }
6983
6984 desc->length = cpu_to_be32(sizeof(desc->port_names));
6985 return sizeof(struct fc_rdp_port_name_desc);
6986 }
6987
6988 static void
lpfc_els_rdp_cmpl(struct lpfc_hba * phba,struct lpfc_rdp_context * rdp_context,int status)6989 lpfc_els_rdp_cmpl(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context,
6990 int status)
6991 {
6992 struct lpfc_nodelist *ndlp = rdp_context->ndlp;
6993 struct lpfc_vport *vport = ndlp->vport;
6994 struct lpfc_iocbq *elsiocb;
6995 struct ulp_bde64 *bpl;
6996 IOCB_t *icmd;
6997 union lpfc_wqe128 *wqe;
6998 uint8_t *pcmd;
6999 struct ls_rjt *stat;
7000 struct fc_rdp_res_frame *rdp_res;
7001 uint32_t cmdsize, len;
7002 uint16_t *flag_ptr;
7003 int rc;
7004 u32 ulp_context;
7005
7006 if (status != SUCCESS)
7007 goto error;
7008
7009 /* This will change once we know the true size of the RDP payload */
7010 cmdsize = sizeof(struct fc_rdp_res_frame);
7011
7012 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize,
7013 lpfc_max_els_tries, rdp_context->ndlp,
7014 rdp_context->ndlp->nlp_DID, ELS_CMD_ACC);
7015 if (!elsiocb)
7016 goto free_rdp_context;
7017
7018 ulp_context = get_job_ulpcontext(phba, elsiocb);
7019 if (phba->sli_rev == LPFC_SLI_REV4) {
7020 wqe = &elsiocb->wqe;
7021 /* ox-id of the frame */
7022 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7023 rdp_context->ox_id);
7024 bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com,
7025 rdp_context->rx_id);
7026 } else {
7027 icmd = &elsiocb->iocb;
7028 icmd->ulpContext = rdp_context->rx_id;
7029 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
7030 }
7031
7032 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7033 "2171 Xmit RDP response tag x%x xri x%x, "
7034 "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x",
7035 elsiocb->iotag, ulp_context,
7036 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
7037 ndlp->nlp_rpi);
7038 rdp_res = (struct fc_rdp_res_frame *)elsiocb->cmd_dmabuf->virt;
7039 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7040 memset(pcmd, 0, sizeof(struct fc_rdp_res_frame));
7041 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
7042
7043 /* Update Alarm and Warning */
7044 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_ALARM_FLAGS);
7045 phba->sfp_alarm |= *flag_ptr;
7046 flag_ptr = (uint16_t *)(rdp_context->page_a2 + SSF_WARNING_FLAGS);
7047 phba->sfp_warning |= *flag_ptr;
7048
7049 /* For RDP payload */
7050 len = 8;
7051 len += lpfc_rdp_res_link_service((struct fc_rdp_link_service_desc *)
7052 (len + pcmd), ELS_CMD_RDP);
7053
7054 len += lpfc_rdp_res_sfp_desc((struct fc_rdp_sfp_desc *)(len + pcmd),
7055 rdp_context->page_a0, rdp_context->page_a2);
7056 len += lpfc_rdp_res_speed((struct fc_rdp_port_speed_desc *)(len + pcmd),
7057 phba);
7058 len += lpfc_rdp_res_link_error((struct fc_rdp_link_error_status_desc *)
7059 (len + pcmd), &rdp_context->link_stat);
7060 len += lpfc_rdp_res_diag_port_names((struct fc_rdp_port_name_desc *)
7061 (len + pcmd), vport);
7062 len += lpfc_rdp_res_attach_port_names((struct fc_rdp_port_name_desc *)
7063 (len + pcmd), vport, ndlp);
7064 len += lpfc_rdp_res_fec_desc((struct fc_fec_rdp_desc *)(len + pcmd),
7065 &rdp_context->link_stat);
7066 len += lpfc_rdp_res_bbc_desc((struct fc_rdp_bbc_desc *)(len + pcmd),
7067 &rdp_context->link_stat, vport);
7068 len += lpfc_rdp_res_oed_temp_desc(phba,
7069 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7070 rdp_context->page_a2);
7071 len += lpfc_rdp_res_oed_voltage_desc(phba,
7072 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7073 rdp_context->page_a2);
7074 len += lpfc_rdp_res_oed_txbias_desc(phba,
7075 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7076 rdp_context->page_a2);
7077 len += lpfc_rdp_res_oed_txpower_desc(phba,
7078 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7079 rdp_context->page_a2);
7080 len += lpfc_rdp_res_oed_rxpower_desc(phba,
7081 (struct fc_rdp_oed_sfp_desc *)(len + pcmd),
7082 rdp_context->page_a2);
7083 len += lpfc_rdp_res_opd_desc((struct fc_rdp_opd_sfp_desc *)(len + pcmd),
7084 rdp_context->page_a0, vport);
7085
7086 rdp_res->length = cpu_to_be32(len - 8);
7087 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7088
7089 /* Now that we know the true size of the payload, update the BPL */
7090 bpl = (struct ulp_bde64 *)elsiocb->bpl_dmabuf->virt;
7091 bpl->tus.f.bdeSize = len;
7092 bpl->tus.f.bdeFlags = 0;
7093 bpl->tus.w = le32_to_cpu(bpl->tus.w);
7094
7095 phba->fc_stat.elsXmitACC++;
7096 elsiocb->ndlp = lpfc_nlp_get(ndlp);
7097 if (!elsiocb->ndlp) {
7098 lpfc_els_free_iocb(phba, elsiocb);
7099 goto free_rdp_context;
7100 }
7101
7102 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7103 if (rc == IOCB_ERROR) {
7104 lpfc_els_free_iocb(phba, elsiocb);
7105 lpfc_nlp_put(ndlp);
7106 }
7107
7108 goto free_rdp_context;
7109
7110 error:
7111 cmdsize = 2 * sizeof(uint32_t);
7112 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, lpfc_max_els_tries,
7113 ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
7114 if (!elsiocb)
7115 goto free_rdp_context;
7116
7117 if (phba->sli_rev == LPFC_SLI_REV4) {
7118 wqe = &elsiocb->wqe;
7119 /* ox-id of the frame */
7120 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7121 rdp_context->ox_id);
7122 bf_set(wqe_ctxt_tag,
7123 &wqe->xmit_els_rsp.wqe_com,
7124 rdp_context->rx_id);
7125 } else {
7126 icmd = &elsiocb->iocb;
7127 icmd->ulpContext = rdp_context->rx_id;
7128 icmd->unsli3.rcvsli3.ox_id = rdp_context->ox_id;
7129 }
7130
7131 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7132
7133 *((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
7134 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
7135 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7136
7137 phba->fc_stat.elsXmitLSRJT++;
7138 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7139 elsiocb->ndlp = lpfc_nlp_get(ndlp);
7140 if (!elsiocb->ndlp) {
7141 lpfc_els_free_iocb(phba, elsiocb);
7142 goto free_rdp_context;
7143 }
7144
7145 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7146 if (rc == IOCB_ERROR) {
7147 lpfc_els_free_iocb(phba, elsiocb);
7148 lpfc_nlp_put(ndlp);
7149 }
7150
7151 free_rdp_context:
7152 /* This reference put is for the original unsolicited RDP. If the
7153 * prep failed, there is no reference to remove.
7154 */
7155 lpfc_nlp_put(ndlp);
7156 kfree(rdp_context);
7157 }
7158
7159 static int
lpfc_get_rdp_info(struct lpfc_hba * phba,struct lpfc_rdp_context * rdp_context)7160 lpfc_get_rdp_info(struct lpfc_hba *phba, struct lpfc_rdp_context *rdp_context)
7161 {
7162 LPFC_MBOXQ_t *mbox = NULL;
7163 int rc;
7164
7165 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7166 if (!mbox) {
7167 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
7168 "7105 failed to allocate mailbox memory");
7169 return 1;
7170 }
7171
7172 if (lpfc_sli4_dump_page_a0(phba, mbox))
7173 goto rdp_fail;
7174 mbox->vport = rdp_context->ndlp->vport;
7175 mbox->mbox_cmpl = lpfc_mbx_cmpl_rdp_page_a0;
7176 mbox->ctx_u.rdp = rdp_context;
7177 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
7178 if (rc == MBX_NOT_FINISHED) {
7179 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
7180 return 1;
7181 }
7182
7183 return 0;
7184
7185 rdp_fail:
7186 mempool_free(mbox, phba->mbox_mem_pool);
7187 return 1;
7188 }
7189
lpfc_get_sfp_info_wait(struct lpfc_hba * phba,struct lpfc_rdp_context * rdp_context)7190 int lpfc_get_sfp_info_wait(struct lpfc_hba *phba,
7191 struct lpfc_rdp_context *rdp_context)
7192 {
7193 LPFC_MBOXQ_t *mbox = NULL;
7194 int rc;
7195 struct lpfc_dmabuf *mp;
7196 struct lpfc_dmabuf *mpsave;
7197 void *virt;
7198 MAILBOX_t *mb;
7199
7200 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7201 if (!mbox) {
7202 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_ELS,
7203 "7205 failed to allocate mailbox memory");
7204 return 1;
7205 }
7206
7207 if (lpfc_sli4_dump_page_a0(phba, mbox))
7208 goto sfp_fail;
7209 mp = mbox->ctx_buf;
7210 mpsave = mp;
7211 virt = mp->virt;
7212 if (phba->sli_rev < LPFC_SLI_REV4) {
7213 mb = &mbox->u.mb;
7214 mb->un.varDmp.cv = 1;
7215 mb->un.varDmp.co = 1;
7216 mb->un.varWords[2] = 0;
7217 mb->un.varWords[3] = DMP_SFF_PAGE_A0_SIZE / 4;
7218 mb->un.varWords[4] = 0;
7219 mb->un.varWords[5] = 0;
7220 mb->un.varWords[6] = 0;
7221 mb->un.varWords[7] = 0;
7222 mb->un.varWords[8] = 0;
7223 mb->un.varWords[9] = 0;
7224 mb->un.varWords[10] = 0;
7225 mbox->in_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
7226 mbox->out_ext_byte_len = DMP_SFF_PAGE_A0_SIZE;
7227 mbox->mbox_offset_word = 5;
7228 mbox->ext_buf = virt;
7229 } else {
7230 bf_set(lpfc_mbx_memory_dump_type3_length,
7231 &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A0_SIZE);
7232 mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
7233 mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
7234 }
7235 mbox->vport = phba->pport;
7236 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_SLI4_CONFIG_TMO);
7237 if (rc == MBX_NOT_FINISHED) {
7238 rc = 1;
7239 goto error;
7240 }
7241 if (rc == MBX_TIMEOUT)
7242 goto error;
7243 if (phba->sli_rev == LPFC_SLI_REV4)
7244 mp = mbox->ctx_buf;
7245 else
7246 mp = mpsave;
7247
7248 if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
7249 rc = 1;
7250 goto error;
7251 }
7252
7253 lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a0,
7254 DMP_SFF_PAGE_A0_SIZE);
7255
7256 memset(mbox, 0, sizeof(*mbox));
7257 memset(mp->virt, 0, DMP_SFF_PAGE_A2_SIZE);
7258 INIT_LIST_HEAD(&mp->list);
7259
7260 /* save address for completion */
7261 mbox->ctx_buf = mp;
7262 mbox->vport = phba->pport;
7263
7264 bf_set(lpfc_mqe_command, &mbox->u.mqe, MBX_DUMP_MEMORY);
7265 bf_set(lpfc_mbx_memory_dump_type3_type,
7266 &mbox->u.mqe.un.mem_dump_type3, DMP_LMSD);
7267 bf_set(lpfc_mbx_memory_dump_type3_link,
7268 &mbox->u.mqe.un.mem_dump_type3, phba->sli4_hba.physical_port);
7269 bf_set(lpfc_mbx_memory_dump_type3_page_no,
7270 &mbox->u.mqe.un.mem_dump_type3, DMP_PAGE_A2);
7271 if (phba->sli_rev < LPFC_SLI_REV4) {
7272 mb = &mbox->u.mb;
7273 mb->un.varDmp.cv = 1;
7274 mb->un.varDmp.co = 1;
7275 mb->un.varWords[2] = 0;
7276 mb->un.varWords[3] = DMP_SFF_PAGE_A2_SIZE / 4;
7277 mb->un.varWords[4] = 0;
7278 mb->un.varWords[5] = 0;
7279 mb->un.varWords[6] = 0;
7280 mb->un.varWords[7] = 0;
7281 mb->un.varWords[8] = 0;
7282 mb->un.varWords[9] = 0;
7283 mb->un.varWords[10] = 0;
7284 mbox->in_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
7285 mbox->out_ext_byte_len = DMP_SFF_PAGE_A2_SIZE;
7286 mbox->mbox_offset_word = 5;
7287 mbox->ext_buf = virt;
7288 } else {
7289 bf_set(lpfc_mbx_memory_dump_type3_length,
7290 &mbox->u.mqe.un.mem_dump_type3, DMP_SFF_PAGE_A2_SIZE);
7291 mbox->u.mqe.un.mem_dump_type3.addr_lo = putPaddrLow(mp->phys);
7292 mbox->u.mqe.un.mem_dump_type3.addr_hi = putPaddrHigh(mp->phys);
7293 }
7294
7295 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_SLI4_CONFIG_TMO);
7296
7297 if (rc == MBX_TIMEOUT)
7298 goto error;
7299 if (bf_get(lpfc_mqe_status, &mbox->u.mqe)) {
7300 rc = 1;
7301 goto error;
7302 }
7303 rc = 0;
7304
7305 lpfc_sli_bemem_bcopy(mp->virt, &rdp_context->page_a2,
7306 DMP_SFF_PAGE_A2_SIZE);
7307
7308 error:
7309 if (mbox->mbox_flag & LPFC_MBX_WAKE) {
7310 mbox->ctx_buf = mpsave;
7311 lpfc_mbox_rsrc_cleanup(phba, mbox, MBOX_THD_UNLOCKED);
7312 }
7313
7314 return rc;
7315
7316 sfp_fail:
7317 mempool_free(mbox, phba->mbox_mem_pool);
7318 return 1;
7319 }
7320
7321 /*
7322 * lpfc_els_rcv_rdp - Process an unsolicited RDP ELS.
7323 * @vport: pointer to a host virtual N_Port data structure.
7324 * @cmdiocb: pointer to lpfc command iocb data structure.
7325 * @ndlp: pointer to a node-list data structure.
7326 *
7327 * This routine processes an unsolicited RDP(Read Diagnostic Parameters)
7328 * IOCB. First, the payload of the unsolicited RDP is checked.
7329 * Then it will (1) send MBX_DUMP_MEMORY, Embedded DMP_LMSD sub command TYPE-3
7330 * for Page A0, (2) send MBX_DUMP_MEMORY, DMP_LMSD for Page A2,
7331 * (3) send MBX_READ_LNK_STAT to get link stat, (4) Call lpfc_els_rdp_cmpl
7332 * gather all data and send RDP response.
7333 *
7334 * Return code
7335 * 0 - Sent the acc response
7336 * 1 - Sent the reject response.
7337 */
7338 static int
lpfc_els_rcv_rdp(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7339 lpfc_els_rcv_rdp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7340 struct lpfc_nodelist *ndlp)
7341 {
7342 struct lpfc_hba *phba = vport->phba;
7343 struct lpfc_dmabuf *pcmd;
7344 uint8_t rjt_err, rjt_expl = LSEXP_NOTHING_MORE;
7345 struct fc_rdp_req_frame *rdp_req;
7346 struct lpfc_rdp_context *rdp_context;
7347 union lpfc_wqe128 *cmd = NULL;
7348 struct ls_rjt stat;
7349
7350 if (phba->sli_rev < LPFC_SLI_REV4 ||
7351 bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
7352 LPFC_SLI_INTF_IF_TYPE_2) {
7353 rjt_err = LSRJT_UNABLE_TPC;
7354 rjt_expl = LSEXP_REQ_UNSUPPORTED;
7355 goto error;
7356 }
7357
7358 if (phba->sli_rev < LPFC_SLI_REV4 ||
7359 test_bit(HBA_FCOE_MODE, &phba->hba_flag)) {
7360 rjt_err = LSRJT_UNABLE_TPC;
7361 rjt_expl = LSEXP_REQ_UNSUPPORTED;
7362 goto error;
7363 }
7364
7365 pcmd = cmdiocb->cmd_dmabuf;
7366 rdp_req = (struct fc_rdp_req_frame *) pcmd->virt;
7367
7368 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7369 "2422 ELS RDP Request "
7370 "dec len %d tag x%x port_id %d len %d\n",
7371 be32_to_cpu(rdp_req->rdp_des_length),
7372 be32_to_cpu(rdp_req->nport_id_desc.tag),
7373 be32_to_cpu(rdp_req->nport_id_desc.nport_id),
7374 be32_to_cpu(rdp_req->nport_id_desc.length));
7375
7376 if (sizeof(struct fc_rdp_nport_desc) !=
7377 be32_to_cpu(rdp_req->rdp_des_length))
7378 goto rjt_logerr;
7379 if (RDP_N_PORT_DESC_TAG != be32_to_cpu(rdp_req->nport_id_desc.tag))
7380 goto rjt_logerr;
7381 if (RDP_NPORT_ID_SIZE !=
7382 be32_to_cpu(rdp_req->nport_id_desc.length))
7383 goto rjt_logerr;
7384 rdp_context = kzalloc(sizeof(struct lpfc_rdp_context), GFP_KERNEL);
7385 if (!rdp_context) {
7386 rjt_err = LSRJT_UNABLE_TPC;
7387 goto error;
7388 }
7389
7390 cmd = &cmdiocb->wqe;
7391 rdp_context->ndlp = lpfc_nlp_get(ndlp);
7392 if (!rdp_context->ndlp) {
7393 kfree(rdp_context);
7394 rjt_err = LSRJT_UNABLE_TPC;
7395 goto error;
7396 }
7397 rdp_context->ox_id = bf_get(wqe_rcvoxid,
7398 &cmd->xmit_els_rsp.wqe_com);
7399 rdp_context->rx_id = bf_get(wqe_ctxt_tag,
7400 &cmd->xmit_els_rsp.wqe_com);
7401 rdp_context->cmpl = lpfc_els_rdp_cmpl;
7402 if (lpfc_get_rdp_info(phba, rdp_context)) {
7403 lpfc_printf_vlog(ndlp->vport, KERN_WARNING, LOG_ELS,
7404 "2423 Unable to send mailbox");
7405 kfree(rdp_context);
7406 rjt_err = LSRJT_UNABLE_TPC;
7407 lpfc_nlp_put(ndlp);
7408 goto error;
7409 }
7410
7411 return 0;
7412
7413 rjt_logerr:
7414 rjt_err = LSRJT_LOGICAL_ERR;
7415
7416 error:
7417 memset(&stat, 0, sizeof(stat));
7418 stat.un.b.lsRjtRsnCode = rjt_err;
7419 stat.un.b.lsRjtRsnCodeExp = rjt_expl;
7420 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7421 return 1;
7422 }
7423
7424
7425 static void
lpfc_els_lcb_rsp(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)7426 lpfc_els_lcb_rsp(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
7427 {
7428 MAILBOX_t *mb;
7429 IOCB_t *icmd;
7430 union lpfc_wqe128 *wqe;
7431 uint8_t *pcmd;
7432 struct lpfc_iocbq *elsiocb;
7433 struct lpfc_nodelist *ndlp;
7434 struct ls_rjt *stat;
7435 union lpfc_sli4_cfg_shdr *shdr;
7436 struct lpfc_lcb_context *lcb_context;
7437 struct fc_lcb_res_frame *lcb_res;
7438 uint32_t cmdsize, shdr_status, shdr_add_status;
7439 int rc;
7440
7441 mb = &pmb->u.mb;
7442 lcb_context = pmb->ctx_u.lcb;
7443 ndlp = lcb_context->ndlp;
7444 memset(&pmb->ctx_u, 0, sizeof(pmb->ctx_u));
7445 pmb->ctx_buf = NULL;
7446
7447 shdr = (union lpfc_sli4_cfg_shdr *)
7448 &pmb->u.mqe.un.beacon_config.header.cfg_shdr;
7449 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7450 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
7451
7452 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX,
7453 "0194 SET_BEACON_CONFIG mailbox "
7454 "completed with status x%x add_status x%x,"
7455 " mbx status x%x\n",
7456 shdr_status, shdr_add_status, mb->mbxStatus);
7457
7458 if ((mb->mbxStatus != MBX_SUCCESS) || shdr_status ||
7459 (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE) ||
7460 (shdr_add_status == ADD_STATUS_INVALID_REQUEST)) {
7461 mempool_free(pmb, phba->mbox_mem_pool);
7462 goto error;
7463 }
7464
7465 mempool_free(pmb, phba->mbox_mem_pool);
7466 cmdsize = sizeof(struct fc_lcb_res_frame);
7467 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7468 lpfc_max_els_tries, ndlp,
7469 ndlp->nlp_DID, ELS_CMD_ACC);
7470
7471 /* Decrement the ndlp reference count from previous mbox command */
7472 lpfc_nlp_put(ndlp);
7473
7474 if (!elsiocb)
7475 goto free_lcb_context;
7476
7477 lcb_res = (struct fc_lcb_res_frame *)elsiocb->cmd_dmabuf->virt;
7478
7479 memset(lcb_res, 0, sizeof(struct fc_lcb_res_frame));
7480
7481 if (phba->sli_rev == LPFC_SLI_REV4) {
7482 wqe = &elsiocb->wqe;
7483 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
7484 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7485 lcb_context->ox_id);
7486 } else {
7487 icmd = &elsiocb->iocb;
7488 icmd->ulpContext = lcb_context->rx_id;
7489 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
7490 }
7491
7492 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7493 *((uint32_t *)(pcmd)) = ELS_CMD_ACC;
7494 lcb_res->lcb_sub_command = lcb_context->sub_command;
7495 lcb_res->lcb_type = lcb_context->type;
7496 lcb_res->capability = lcb_context->capability;
7497 lcb_res->lcb_frequency = lcb_context->frequency;
7498 lcb_res->lcb_duration = lcb_context->duration;
7499 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7500 phba->fc_stat.elsXmitACC++;
7501
7502 elsiocb->ndlp = lpfc_nlp_get(ndlp);
7503 if (!elsiocb->ndlp) {
7504 lpfc_els_free_iocb(phba, elsiocb);
7505 goto out;
7506 }
7507
7508 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7509 if (rc == IOCB_ERROR) {
7510 lpfc_els_free_iocb(phba, elsiocb);
7511 lpfc_nlp_put(ndlp);
7512 }
7513 out:
7514 kfree(lcb_context);
7515 return;
7516
7517 error:
7518 cmdsize = sizeof(struct fc_lcb_res_frame);
7519 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
7520 lpfc_max_els_tries, ndlp,
7521 ndlp->nlp_DID, ELS_CMD_LS_RJT);
7522 lpfc_nlp_put(ndlp);
7523 if (!elsiocb)
7524 goto free_lcb_context;
7525
7526 if (phba->sli_rev == LPFC_SLI_REV4) {
7527 wqe = &elsiocb->wqe;
7528 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, lcb_context->rx_id);
7529 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
7530 lcb_context->ox_id);
7531 } else {
7532 icmd = &elsiocb->iocb;
7533 icmd->ulpContext = lcb_context->rx_id;
7534 icmd->unsli3.rcvsli3.ox_id = lcb_context->ox_id;
7535 }
7536
7537 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
7538
7539 *((uint32_t *)(pcmd)) = ELS_CMD_LS_RJT;
7540 stat = (struct ls_rjt *)(pcmd + sizeof(uint32_t));
7541 stat->un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
7542
7543 if (shdr_add_status == ADD_STATUS_OPERATION_ALREADY_ACTIVE)
7544 stat->un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
7545
7546 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
7547 phba->fc_stat.elsXmitLSRJT++;
7548 elsiocb->ndlp = lpfc_nlp_get(ndlp);
7549 if (!elsiocb->ndlp) {
7550 lpfc_els_free_iocb(phba, elsiocb);
7551 goto free_lcb_context;
7552 }
7553
7554 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
7555 if (rc == IOCB_ERROR) {
7556 lpfc_els_free_iocb(phba, elsiocb);
7557 lpfc_nlp_put(ndlp);
7558 }
7559 free_lcb_context:
7560 kfree(lcb_context);
7561 }
7562
7563 static int
lpfc_sli4_set_beacon(struct lpfc_vport * vport,struct lpfc_lcb_context * lcb_context,uint32_t beacon_state)7564 lpfc_sli4_set_beacon(struct lpfc_vport *vport,
7565 struct lpfc_lcb_context *lcb_context,
7566 uint32_t beacon_state)
7567 {
7568 struct lpfc_hba *phba = vport->phba;
7569 union lpfc_sli4_cfg_shdr *cfg_shdr;
7570 LPFC_MBOXQ_t *mbox = NULL;
7571 uint32_t len;
7572 int rc;
7573
7574 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7575 if (!mbox)
7576 return 1;
7577
7578 cfg_shdr = &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
7579 len = sizeof(struct lpfc_mbx_set_beacon_config) -
7580 sizeof(struct lpfc_sli4_cfg_mhdr);
7581 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
7582 LPFC_MBOX_OPCODE_SET_BEACON_CONFIG, len,
7583 LPFC_SLI4_MBX_EMBED);
7584 mbox->ctx_u.lcb = lcb_context;
7585 mbox->vport = phba->pport;
7586 mbox->mbox_cmpl = lpfc_els_lcb_rsp;
7587 bf_set(lpfc_mbx_set_beacon_port_num, &mbox->u.mqe.un.beacon_config,
7588 phba->sli4_hba.physical_port);
7589 bf_set(lpfc_mbx_set_beacon_state, &mbox->u.mqe.un.beacon_config,
7590 beacon_state);
7591 mbox->u.mqe.un.beacon_config.word5 = 0; /* Reserved */
7592
7593 /*
7594 * Check bv1s bit before issuing the mailbox
7595 * if bv1s == 1, LCB V1 supported
7596 * else, LCB V0 supported
7597 */
7598
7599 if (phba->sli4_hba.pc_sli4_params.bv1s) {
7600 /* COMMON_SET_BEACON_CONFIG_V1 */
7601 cfg_shdr->request.word9 = BEACON_VERSION_V1;
7602 lcb_context->capability |= LCB_CAPABILITY_DURATION;
7603 bf_set(lpfc_mbx_set_beacon_port_type,
7604 &mbox->u.mqe.un.beacon_config, 0);
7605 bf_set(lpfc_mbx_set_beacon_duration_v1,
7606 &mbox->u.mqe.un.beacon_config,
7607 be16_to_cpu(lcb_context->duration));
7608 } else {
7609 /* COMMON_SET_BEACON_CONFIG_V0 */
7610 if (be16_to_cpu(lcb_context->duration) != 0) {
7611 mempool_free(mbox, phba->mbox_mem_pool);
7612 return 1;
7613 }
7614 cfg_shdr->request.word9 = BEACON_VERSION_V0;
7615 lcb_context->capability &= ~(LCB_CAPABILITY_DURATION);
7616 bf_set(lpfc_mbx_set_beacon_state,
7617 &mbox->u.mqe.un.beacon_config, beacon_state);
7618 bf_set(lpfc_mbx_set_beacon_port_type,
7619 &mbox->u.mqe.un.beacon_config, 1);
7620 bf_set(lpfc_mbx_set_beacon_duration,
7621 &mbox->u.mqe.un.beacon_config,
7622 be16_to_cpu(lcb_context->duration));
7623 }
7624
7625 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
7626 if (rc == MBX_NOT_FINISHED) {
7627 mempool_free(mbox, phba->mbox_mem_pool);
7628 return 1;
7629 }
7630
7631 return 0;
7632 }
7633
7634
7635 /**
7636 * lpfc_els_rcv_lcb - Process an unsolicited LCB
7637 * @vport: pointer to a host virtual N_Port data structure.
7638 * @cmdiocb: pointer to lpfc command iocb data structure.
7639 * @ndlp: pointer to a node-list data structure.
7640 *
7641 * This routine processes an unsolicited LCB(LINK CABLE BEACON) IOCB.
7642 * First, the payload of the unsolicited LCB is checked.
7643 * Then based on Subcommand beacon will either turn on or off.
7644 *
7645 * Return code
7646 * 0 - Sent the acc response
7647 * 1 - Sent the reject response.
7648 **/
7649 static int
lpfc_els_rcv_lcb(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7650 lpfc_els_rcv_lcb(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7651 struct lpfc_nodelist *ndlp)
7652 {
7653 struct lpfc_hba *phba = vport->phba;
7654 struct lpfc_dmabuf *pcmd;
7655 uint8_t *lp;
7656 struct fc_lcb_request_frame *beacon;
7657 struct lpfc_lcb_context *lcb_context;
7658 u8 state, rjt_err = 0;
7659 struct ls_rjt stat;
7660
7661 pcmd = cmdiocb->cmd_dmabuf;
7662 lp = (uint8_t *)pcmd->virt;
7663 beacon = (struct fc_lcb_request_frame *)pcmd->virt;
7664
7665 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7666 "0192 ELS LCB Data x%x x%x x%x x%x sub x%x "
7667 "type x%x frequency %x duration x%x\n",
7668 lp[0], lp[1], lp[2],
7669 beacon->lcb_command,
7670 beacon->lcb_sub_command,
7671 beacon->lcb_type,
7672 beacon->lcb_frequency,
7673 be16_to_cpu(beacon->lcb_duration));
7674
7675 if (beacon->lcb_sub_command != LPFC_LCB_ON &&
7676 beacon->lcb_sub_command != LPFC_LCB_OFF) {
7677 rjt_err = LSRJT_CMD_UNSUPPORTED;
7678 goto rjt;
7679 }
7680
7681 if (phba->sli_rev < LPFC_SLI_REV4 ||
7682 test_bit(HBA_FCOE_MODE, &phba->hba_flag) ||
7683 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
7684 LPFC_SLI_INTF_IF_TYPE_2)) {
7685 rjt_err = LSRJT_CMD_UNSUPPORTED;
7686 goto rjt;
7687 }
7688
7689 lcb_context = kmalloc(sizeof(*lcb_context), GFP_KERNEL);
7690 if (!lcb_context) {
7691 rjt_err = LSRJT_UNABLE_TPC;
7692 goto rjt;
7693 }
7694
7695 state = (beacon->lcb_sub_command == LPFC_LCB_ON) ? 1 : 0;
7696 lcb_context->sub_command = beacon->lcb_sub_command;
7697 lcb_context->capability = 0;
7698 lcb_context->type = beacon->lcb_type;
7699 lcb_context->frequency = beacon->lcb_frequency;
7700 lcb_context->duration = beacon->lcb_duration;
7701 lcb_context->ox_id = get_job_rcvoxid(phba, cmdiocb);
7702 lcb_context->rx_id = get_job_ulpcontext(phba, cmdiocb);
7703 lcb_context->ndlp = lpfc_nlp_get(ndlp);
7704 if (!lcb_context->ndlp) {
7705 rjt_err = LSRJT_UNABLE_TPC;
7706 goto rjt_free;
7707 }
7708
7709 if (lpfc_sli4_set_beacon(vport, lcb_context, state)) {
7710 lpfc_printf_vlog(ndlp->vport, KERN_ERR, LOG_TRACE_EVENT,
7711 "0193 failed to send mail box");
7712 lpfc_nlp_put(ndlp);
7713 rjt_err = LSRJT_UNABLE_TPC;
7714 goto rjt_free;
7715 }
7716 return 0;
7717
7718 rjt_free:
7719 kfree(lcb_context);
7720 rjt:
7721 memset(&stat, 0, sizeof(stat));
7722 stat.un.b.lsRjtRsnCode = rjt_err;
7723 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
7724 return 1;
7725 }
7726
7727
7728 /**
7729 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
7730 * @vport: pointer to a host virtual N_Port data structure.
7731 *
7732 * This routine cleans up any Registration State Change Notification
7733 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
7734 * @vport together with the host_lock is used to prevent multiple thread
7735 * trying to access the RSCN array on a same @vport at the same time.
7736 **/
7737 void
lpfc_els_flush_rscn(struct lpfc_vport * vport)7738 lpfc_els_flush_rscn(struct lpfc_vport *vport)
7739 {
7740 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7741 struct lpfc_hba *phba = vport->phba;
7742 int i;
7743
7744 spin_lock_irq(shost->host_lock);
7745 if (vport->fc_rscn_flush) {
7746 /* Another thread is walking fc_rscn_id_list on this vport */
7747 spin_unlock_irq(shost->host_lock);
7748 return;
7749 }
7750 /* Indicate we are walking lpfc_els_flush_rscn on this vport */
7751 vport->fc_rscn_flush = 1;
7752 spin_unlock_irq(shost->host_lock);
7753
7754 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
7755 lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
7756 vport->fc_rscn_id_list[i] = NULL;
7757 }
7758 clear_bit(FC_RSCN_MODE, &vport->fc_flag);
7759 clear_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
7760 spin_lock_irq(shost->host_lock);
7761 vport->fc_rscn_id_cnt = 0;
7762 spin_unlock_irq(shost->host_lock);
7763 lpfc_can_disctmo(vport);
7764 /* Indicate we are done walking this fc_rscn_id_list */
7765 vport->fc_rscn_flush = 0;
7766 }
7767
7768 /**
7769 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
7770 * @vport: pointer to a host virtual N_Port data structure.
7771 * @did: remote destination port identifier.
7772 *
7773 * This routine checks whether there is any pending Registration State
7774 * Configuration Notification (RSCN) to a @did on @vport.
7775 *
7776 * Return code
7777 * None zero - The @did matched with a pending rscn
7778 * 0 - not able to match @did with a pending rscn
7779 **/
7780 int
lpfc_rscn_payload_check(struct lpfc_vport * vport,uint32_t did)7781 lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
7782 {
7783 D_ID ns_did;
7784 D_ID rscn_did;
7785 uint32_t *lp;
7786 uint32_t payload_len, i;
7787 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7788
7789 ns_did.un.word = did;
7790
7791 /* Never match fabric nodes for RSCNs */
7792 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
7793 return 0;
7794
7795 /* If we are doing a FULL RSCN rediscovery, match everything */
7796 if (test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag))
7797 return did;
7798
7799 spin_lock_irq(shost->host_lock);
7800 if (vport->fc_rscn_flush) {
7801 /* Another thread is walking fc_rscn_id_list on this vport */
7802 spin_unlock_irq(shost->host_lock);
7803 return 0;
7804 }
7805 /* Indicate we are walking fc_rscn_id_list on this vport */
7806 vport->fc_rscn_flush = 1;
7807 spin_unlock_irq(shost->host_lock);
7808 for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
7809 lp = vport->fc_rscn_id_list[i]->virt;
7810 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
7811 payload_len -= sizeof(uint32_t); /* take off word 0 */
7812 while (payload_len) {
7813 rscn_did.un.word = be32_to_cpu(*lp++);
7814 payload_len -= sizeof(uint32_t);
7815 switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
7816 case RSCN_ADDRESS_FORMAT_PORT:
7817 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
7818 && (ns_did.un.b.area == rscn_did.un.b.area)
7819 && (ns_did.un.b.id == rscn_did.un.b.id))
7820 goto return_did_out;
7821 break;
7822 case RSCN_ADDRESS_FORMAT_AREA:
7823 if ((ns_did.un.b.domain == rscn_did.un.b.domain)
7824 && (ns_did.un.b.area == rscn_did.un.b.area))
7825 goto return_did_out;
7826 break;
7827 case RSCN_ADDRESS_FORMAT_DOMAIN:
7828 if (ns_did.un.b.domain == rscn_did.un.b.domain)
7829 goto return_did_out;
7830 break;
7831 case RSCN_ADDRESS_FORMAT_FABRIC:
7832 goto return_did_out;
7833 }
7834 }
7835 }
7836 /* Indicate we are done with walking fc_rscn_id_list on this vport */
7837 vport->fc_rscn_flush = 0;
7838 return 0;
7839 return_did_out:
7840 /* Indicate we are done with walking fc_rscn_id_list on this vport */
7841 vport->fc_rscn_flush = 0;
7842 return did;
7843 }
7844
7845 /**
7846 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
7847 * @vport: pointer to a host virtual N_Port data structure.
7848 *
7849 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
7850 * state machine for a @vport's nodes that are with pending RSCN (Registration
7851 * State Change Notification).
7852 *
7853 * Return code
7854 * 0 - Successful (currently alway return 0)
7855 **/
7856 static int
lpfc_rscn_recovery_check(struct lpfc_vport * vport)7857 lpfc_rscn_recovery_check(struct lpfc_vport *vport)
7858 {
7859 struct lpfc_nodelist *ndlp = NULL, *n;
7860
7861 /* Move all affected nodes by pending RSCNs to NPR state. */
7862 list_for_each_entry_safe(ndlp, n, &vport->fc_nodes, nlp_listp) {
7863 if ((ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
7864 !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
7865 continue;
7866
7867 /* NVME Target mode does not do RSCN Recovery. */
7868 if (vport->phba->nvmet_support)
7869 continue;
7870
7871 /* If we are in the process of doing discovery on this
7872 * NPort, let it continue on its own.
7873 */
7874 switch (ndlp->nlp_state) {
7875 case NLP_STE_PLOGI_ISSUE:
7876 case NLP_STE_ADISC_ISSUE:
7877 case NLP_STE_REG_LOGIN_ISSUE:
7878 case NLP_STE_PRLI_ISSUE:
7879 case NLP_STE_LOGO_ISSUE:
7880 continue;
7881 }
7882
7883 lpfc_disc_state_machine(vport, ndlp, NULL,
7884 NLP_EVT_DEVICE_RECOVERY);
7885 lpfc_cancel_retry_delay_tmo(vport, ndlp);
7886 }
7887 return 0;
7888 }
7889
7890 /**
7891 * lpfc_send_rscn_event - Send an RSCN event to management application
7892 * @vport: pointer to a host virtual N_Port data structure.
7893 * @cmdiocb: pointer to lpfc command iocb data structure.
7894 *
7895 * lpfc_send_rscn_event sends an RSCN netlink event to management
7896 * applications.
7897 */
7898 static void
lpfc_send_rscn_event(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb)7899 lpfc_send_rscn_event(struct lpfc_vport *vport,
7900 struct lpfc_iocbq *cmdiocb)
7901 {
7902 struct lpfc_dmabuf *pcmd;
7903 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7904 uint32_t *payload_ptr;
7905 uint32_t payload_len;
7906 struct lpfc_rscn_event_header *rscn_event_data;
7907
7908 pcmd = cmdiocb->cmd_dmabuf;
7909 payload_ptr = (uint32_t *) pcmd->virt;
7910 payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);
7911
7912 rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
7913 payload_len, GFP_KERNEL);
7914 if (!rscn_event_data) {
7915 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
7916 "0147 Failed to allocate memory for RSCN event\n");
7917 return;
7918 }
7919 rscn_event_data->event_type = FC_REG_RSCN_EVENT;
7920 rscn_event_data->payload_length = payload_len;
7921 memcpy(rscn_event_data->rscn_payload, payload_ptr,
7922 payload_len);
7923
7924 fc_host_post_vendor_event(shost,
7925 fc_get_event_number(),
7926 sizeof(struct lpfc_rscn_event_header) + payload_len,
7927 (char *)rscn_event_data,
7928 LPFC_NL_VENDOR_ID);
7929
7930 kfree(rscn_event_data);
7931 }
7932
7933 /**
7934 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
7935 * @vport: pointer to a host virtual N_Port data structure.
7936 * @cmdiocb: pointer to lpfc command iocb data structure.
7937 * @ndlp: pointer to a node-list data structure.
7938 *
7939 * This routine processes an unsolicited RSCN (Registration State Change
7940 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
7941 * to invoke fc_host_post_event() routine to the FC transport layer. If the
7942 * discover state machine is about to begin discovery, it just accepts the
7943 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
7944 * contains N_Port IDs for other vports on this HBA, it just accepts the
7945 * RSCN and ignore processing it. If the state machine is in the recovery
7946 * state, the fc_rscn_id_list of this @vport is walked and the
7947 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
7948 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
7949 * routine is invoked to handle the RSCN event.
7950 *
7951 * Return code
7952 * 0 - Just sent the acc response
7953 * 1 - Sent the acc response and waited for name server completion
7954 **/
7955 static int
lpfc_els_rcv_rscn(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)7956 lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
7957 struct lpfc_nodelist *ndlp)
7958 {
7959 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
7960 struct lpfc_hba *phba = vport->phba;
7961 struct lpfc_dmabuf *pcmd;
7962 uint32_t *lp, *datap;
7963 uint32_t payload_len, length, nportid, *cmd;
7964 int rscn_cnt;
7965 int rscn_id = 0, hba_id = 0;
7966 int i, tmo;
7967
7968 pcmd = cmdiocb->cmd_dmabuf;
7969 lp = (uint32_t *) pcmd->virt;
7970
7971 payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
7972 payload_len -= sizeof(uint32_t); /* take off word 0 */
7973 /* RSCN received */
7974 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
7975 "0214 RSCN received Data: x%lx x%x x%x x%x\n",
7976 vport->fc_flag, payload_len, *lp,
7977 vport->fc_rscn_id_cnt);
7978
7979 /* Send an RSCN event to the management application */
7980 lpfc_send_rscn_event(vport, cmdiocb);
7981
7982 for (i = 0; i < payload_len/sizeof(uint32_t); i++)
7983 fc_host_post_event(shost, fc_get_event_number(),
7984 FCH_EVT_RSCN, lp[i]);
7985
7986 /* Check if RSCN is coming from a direct-connected remote NPort */
7987 if (test_bit(FC_PT2PT, &vport->fc_flag)) {
7988 /* If so, just ACC it, no other action needed for now */
7989 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
7990 "2024 pt2pt RSCN %08x Data: x%lx x%x\n",
7991 *lp, vport->fc_flag, payload_len);
7992 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
7993
7994 /* Check to see if we need to NVME rescan this target
7995 * remoteport.
7996 */
7997 if (ndlp->nlp_fc4_type & NLP_FC4_NVME &&
7998 ndlp->nlp_type & (NLP_NVME_TARGET | NLP_NVME_DISCOVERY))
7999 lpfc_nvme_rescan_port(vport, ndlp);
8000 return 0;
8001 }
8002
8003 /* If we are about to begin discovery, just ACC the RSCN.
8004 * Discovery processing will satisfy it.
8005 */
8006 if (vport->port_state <= LPFC_NS_QRY) {
8007 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8008 "RCV RSCN ignore: did:x%x/ste:x%x flg:x%lx",
8009 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
8010
8011 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8012 return 0;
8013 }
8014
8015 /* If this RSCN just contains NPortIDs for other vports on this HBA,
8016 * just ACC and ignore it.
8017 */
8018 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
8019 !(vport->cfg_peer_port_login)) {
8020 i = payload_len;
8021 datap = lp;
8022 while (i > 0) {
8023 nportid = *datap++;
8024 nportid = ((be32_to_cpu(nportid)) & Mask_DID);
8025 i -= sizeof(uint32_t);
8026 rscn_id++;
8027 if (lpfc_find_vport_by_did(phba, nportid))
8028 hba_id++;
8029 }
8030 if (rscn_id == hba_id) {
8031 /* ALL NPortIDs in RSCN are on HBA */
8032 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8033 "0219 Ignore RSCN "
8034 "Data: x%lx x%x x%x x%x\n",
8035 vport->fc_flag, payload_len,
8036 *lp, vport->fc_rscn_id_cnt);
8037 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8038 "RCV RSCN vport: did:x%x/ste:x%x flg:x%lx",
8039 ndlp->nlp_DID, vport->port_state,
8040 ndlp->nlp_flag);
8041
8042 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
8043 ndlp, NULL);
8044 /* Restart disctmo if its already running */
8045 if (test_bit(FC_DISC_TMO, &vport->fc_flag)) {
8046 tmo = ((phba->fc_ratov * 3) + 3);
8047 mod_timer(&vport->fc_disctmo,
8048 jiffies +
8049 msecs_to_jiffies(1000 * tmo));
8050 }
8051 return 0;
8052 }
8053 }
8054
8055 spin_lock_irq(shost->host_lock);
8056 if (vport->fc_rscn_flush) {
8057 /* Another thread is walking fc_rscn_id_list on this vport */
8058 spin_unlock_irq(shost->host_lock);
8059 set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
8060 /* Send back ACC */
8061 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8062 return 0;
8063 }
8064 /* Indicate we are walking fc_rscn_id_list on this vport */
8065 vport->fc_rscn_flush = 1;
8066 spin_unlock_irq(shost->host_lock);
8067 /* Get the array count after successfully have the token */
8068 rscn_cnt = vport->fc_rscn_id_cnt;
8069 /* If we are already processing an RSCN, save the received
8070 * RSCN payload buffer, cmdiocb->cmd_dmabuf to process later.
8071 */
8072 if (test_bit(FC_RSCN_MODE, &vport->fc_flag) ||
8073 test_bit(FC_NDISC_ACTIVE, &vport->fc_flag)) {
8074 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8075 "RCV RSCN defer: did:x%x/ste:x%x flg:x%lx",
8076 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
8077
8078 set_bit(FC_RSCN_DEFERRED, &vport->fc_flag);
8079
8080 /* Restart disctmo if its already running */
8081 if (test_bit(FC_DISC_TMO, &vport->fc_flag)) {
8082 tmo = ((phba->fc_ratov * 3) + 3);
8083 mod_timer(&vport->fc_disctmo,
8084 jiffies + msecs_to_jiffies(1000 * tmo));
8085 }
8086 if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
8087 !test_bit(FC_RSCN_DISCOVERY, &vport->fc_flag)) {
8088 set_bit(FC_RSCN_MODE, &vport->fc_flag);
8089 if (rscn_cnt) {
8090 cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
8091 length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
8092 }
8093 if ((rscn_cnt) &&
8094 (payload_len + length <= LPFC_BPL_SIZE)) {
8095 *cmd &= ELS_CMD_MASK;
8096 *cmd |= cpu_to_be32(payload_len + length);
8097 memcpy(((uint8_t *)cmd) + length, lp,
8098 payload_len);
8099 } else {
8100 vport->fc_rscn_id_list[rscn_cnt] = pcmd;
8101 vport->fc_rscn_id_cnt++;
8102 /* If we zero, cmdiocb->cmd_dmabuf, the calling
8103 * routine will not try to free it.
8104 */
8105 cmdiocb->cmd_dmabuf = NULL;
8106 }
8107 /* Deferred RSCN */
8108 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8109 "0235 Deferred RSCN "
8110 "Data: x%x x%lx x%x\n",
8111 vport->fc_rscn_id_cnt, vport->fc_flag,
8112 vport->port_state);
8113 } else {
8114 set_bit(FC_RSCN_DISCOVERY, &vport->fc_flag);
8115 /* ReDiscovery RSCN */
8116 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8117 "0234 ReDiscovery RSCN "
8118 "Data: x%x x%lx x%x\n",
8119 vport->fc_rscn_id_cnt, vport->fc_flag,
8120 vport->port_state);
8121 }
8122 /* Indicate we are done walking fc_rscn_id_list on this vport */
8123 vport->fc_rscn_flush = 0;
8124 /* Send back ACC */
8125 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8126 /* send RECOVERY event for ALL nodes that match RSCN payload */
8127 lpfc_rscn_recovery_check(vport);
8128 return 0;
8129 }
8130 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
8131 "RCV RSCN: did:x%x/ste:x%x flg:x%lx",
8132 ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);
8133
8134 set_bit(FC_RSCN_MODE, &vport->fc_flag);
8135 vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
8136 /* Indicate we are done walking fc_rscn_id_list on this vport */
8137 vport->fc_rscn_flush = 0;
8138 /*
8139 * If we zero, cmdiocb->cmd_dmabuf, the calling routine will
8140 * not try to free it.
8141 */
8142 cmdiocb->cmd_dmabuf = NULL;
8143 lpfc_set_disctmo(vport);
8144 /* Send back ACC */
8145 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8146 /* send RECOVERY event for ALL nodes that match RSCN payload */
8147 lpfc_rscn_recovery_check(vport);
8148 return lpfc_els_handle_rscn(vport);
8149 }
8150
8151 /**
8152 * lpfc_els_handle_rscn - Handle rscn for a vport
8153 * @vport: pointer to a host virtual N_Port data structure.
8154 *
8155 * This routine handles the Registration State Configuration Notification
8156 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
8157 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
8158 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
8159 * NameServer shall be issued. If CT command to the NameServer fails to be
8160 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
8161 * RSCN activities with the @vport.
8162 *
8163 * Return code
8164 * 0 - Cleaned up rscn on the @vport
8165 * 1 - Wait for plogi to name server before proceed
8166 **/
8167 int
lpfc_els_handle_rscn(struct lpfc_vport * vport)8168 lpfc_els_handle_rscn(struct lpfc_vport *vport)
8169 {
8170 struct lpfc_nodelist *ndlp;
8171 struct lpfc_hba *phba = vport->phba;
8172
8173 /* Ignore RSCN if the port is being torn down. */
8174 if (test_bit(FC_UNLOADING, &vport->load_flag)) {
8175 lpfc_els_flush_rscn(vport);
8176 return 0;
8177 }
8178
8179 /* Start timer for RSCN processing */
8180 lpfc_set_disctmo(vport);
8181
8182 /* RSCN processed */
8183 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
8184 "0215 RSCN processed Data: x%lx x%x x%x x%x x%x x%x\n",
8185 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
8186 vport->port_state, vport->num_disc_nodes,
8187 vport->gidft_inp);
8188
8189 /* To process RSCN, first compare RSCN data with NameServer */
8190 vport->fc_ns_retry = 0;
8191 vport->num_disc_nodes = 0;
8192
8193 ndlp = lpfc_findnode_did(vport, NameServer_DID);
8194 if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
8195 /* Good ndlp, issue CT Request to NameServer. Need to
8196 * know how many gidfts were issued. If none, then just
8197 * flush the RSCN. Otherwise, the outstanding requests
8198 * need to complete.
8199 */
8200 if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_FT) {
8201 if (lpfc_issue_gidft(vport) > 0)
8202 return 1;
8203 } else if (phba->cfg_ns_query == LPFC_NS_QUERY_GID_PT) {
8204 if (lpfc_issue_gidpt(vport) > 0)
8205 return 1;
8206 } else {
8207 return 1;
8208 }
8209 } else {
8210 /* Nameserver login in question. Revalidate. */
8211 if (ndlp) {
8212 ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
8213 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
8214 } else {
8215 ndlp = lpfc_nlp_init(vport, NameServer_DID);
8216 if (!ndlp) {
8217 lpfc_els_flush_rscn(vport);
8218 return 0;
8219 }
8220 ndlp->nlp_prev_state = ndlp->nlp_state;
8221 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
8222 }
8223 ndlp->nlp_type |= NLP_FABRIC;
8224 lpfc_issue_els_plogi(vport, NameServer_DID, 0);
8225 /* Wait for NameServer login cmpl before we can
8226 * continue
8227 */
8228 return 1;
8229 }
8230
8231 lpfc_els_flush_rscn(vport);
8232 return 0;
8233 }
8234
8235 /**
8236 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
8237 * @vport: pointer to a host virtual N_Port data structure.
8238 * @cmdiocb: pointer to lpfc command iocb data structure.
8239 * @ndlp: pointer to a node-list data structure.
8240 *
8241 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
8242 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
8243 * point topology. As an unsolicited FLOGI should not be received in a loop
8244 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
8245 * lpfc_check_sparm() routine is invoked to check the parameters in the
8246 * unsolicited FLOGI. If parameters validation failed, the routine
8247 * lpfc_els_rsp_reject() shall be called with reject reason code set to
8248 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
8249 * FLOGI shall be compared with the Port WWN of the @vport to determine who
8250 * will initiate PLOGI. The higher lexicographical value party shall has
8251 * higher priority (as the winning port) and will initiate PLOGI and
8252 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
8253 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
8254 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
8255 *
8256 * Return code
8257 * 0 - Successfully processed the unsolicited flogi
8258 * 1 - Failed to process the unsolicited flogi
8259 **/
8260 static int
lpfc_els_rcv_flogi(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)8261 lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8262 struct lpfc_nodelist *ndlp)
8263 {
8264 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
8265 struct lpfc_hba *phba = vport->phba;
8266 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf;
8267 uint32_t *lp = (uint32_t *) pcmd->virt;
8268 union lpfc_wqe128 *wqe = &cmdiocb->wqe;
8269 struct serv_parm *sp;
8270 LPFC_MBOXQ_t *mbox;
8271 uint32_t cmd, did;
8272 int rc;
8273 unsigned long fc_flag = 0;
8274 uint32_t port_state = 0;
8275
8276 /* Clear external loopback plug detected flag */
8277 phba->link_flag &= ~LS_EXTERNAL_LOOPBACK;
8278
8279 cmd = *lp++;
8280 sp = (struct serv_parm *) lp;
8281
8282 /* FLOGI received */
8283
8284 lpfc_set_disctmo(vport);
8285
8286 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
8287 /* We should never receive a FLOGI in loop mode, ignore it */
8288 did = bf_get(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest);
8289
8290 /* An FLOGI ELS command <elsCmd> was received from DID <did> in
8291 Loop Mode */
8292 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
8293 "0113 An FLOGI ELS command x%x was "
8294 "received from DID x%x in Loop Mode\n",
8295 cmd, did);
8296 return 1;
8297 }
8298
8299 (void) lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1);
8300
8301 /*
8302 * If our portname is greater than the remote portname,
8303 * then we initiate Nport login.
8304 */
8305
8306 rc = memcmp(&vport->fc_portname, &sp->portName,
8307 sizeof(struct lpfc_name));
8308
8309 if (!rc) {
8310 if (phba->sli_rev < LPFC_SLI_REV4) {
8311 mbox = mempool_alloc(phba->mbox_mem_pool,
8312 GFP_KERNEL);
8313 if (!mbox)
8314 return 1;
8315 lpfc_linkdown(phba);
8316 lpfc_init_link(phba, mbox,
8317 phba->cfg_topology,
8318 phba->cfg_link_speed);
8319 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
8320 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
8321 mbox->vport = vport;
8322 rc = lpfc_sli_issue_mbox(phba, mbox,
8323 MBX_NOWAIT);
8324 lpfc_set_loopback_flag(phba);
8325 if (rc == MBX_NOT_FINISHED)
8326 mempool_free(mbox, phba->mbox_mem_pool);
8327 return 1;
8328 }
8329
8330 /* External loopback plug insertion detected */
8331 phba->link_flag |= LS_EXTERNAL_LOOPBACK;
8332
8333 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS | LOG_LIBDFC,
8334 "1119 External Loopback plug detected\n");
8335
8336 /* abort the flogi coming back to ourselves
8337 * due to external loopback on the port.
8338 */
8339 lpfc_els_abort_flogi(phba);
8340 return 0;
8341
8342 } else if (rc > 0) { /* greater than */
8343 set_bit(FC_PT2PT_PLOGI, &vport->fc_flag);
8344
8345 /* If we have the high WWPN we can assign our own
8346 * myDID; otherwise, we have to WAIT for a PLOGI
8347 * from the remote NPort to find out what it
8348 * will be.
8349 */
8350 vport->fc_myDID = PT2PT_LocalID;
8351 } else {
8352 vport->fc_myDID = PT2PT_RemoteID;
8353 }
8354
8355 /*
8356 * The vport state should go to LPFC_FLOGI only
8357 * AFTER we issue a FLOGI, not receive one.
8358 */
8359 spin_lock_irq(shost->host_lock);
8360 fc_flag = vport->fc_flag;
8361 port_state = vport->port_state;
8362 /* Acking an unsol FLOGI. Count 1 for link bounce
8363 * work-around.
8364 */
8365 vport->rcv_flogi_cnt++;
8366 spin_unlock_irq(shost->host_lock);
8367 set_bit(FC_PT2PT, &vport->fc_flag);
8368 clear_bit(FC_FABRIC, &vport->fc_flag);
8369 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
8370 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8371 "3311 Rcv Flogi PS x%x new PS x%x "
8372 "fc_flag x%lx new fc_flag x%lx\n",
8373 port_state, vport->port_state,
8374 fc_flag, vport->fc_flag);
8375
8376 /*
8377 * We temporarily set fc_myDID to make it look like we are
8378 * a Fabric. This is done just so we end up with the right
8379 * did / sid on the FLOGI ACC rsp.
8380 */
8381 did = vport->fc_myDID;
8382 vport->fc_myDID = Fabric_DID;
8383
8384 memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));
8385
8386 /* Defer ACC response until AFTER we issue a FLOGI */
8387 if (!test_bit(HBA_FLOGI_ISSUED, &phba->hba_flag)) {
8388 phba->defer_flogi_acc.rx_id = bf_get(wqe_ctxt_tag,
8389 &wqe->xmit_els_rsp.wqe_com);
8390 phba->defer_flogi_acc.ox_id = bf_get(wqe_rcvoxid,
8391 &wqe->xmit_els_rsp.wqe_com);
8392
8393 vport->fc_myDID = did;
8394
8395 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8396 "3344 Deferring FLOGI ACC: rx_id: x%x,"
8397 " ox_id: x%x, hba_flag x%lx\n",
8398 phba->defer_flogi_acc.rx_id,
8399 phba->defer_flogi_acc.ox_id, phba->hba_flag);
8400
8401 phba->defer_flogi_acc.flag = true;
8402
8403 /* This nlp_get is paired with nlp_puts that reset the
8404 * defer_flogi_acc.flag back to false. We need to retain
8405 * a kref on the ndlp until the deferred FLOGI ACC is
8406 * processed or cancelled.
8407 */
8408 phba->defer_flogi_acc.ndlp = lpfc_nlp_get(ndlp);
8409 return 0;
8410 }
8411
8412 /* Send back ACC */
8413 lpfc_els_rsp_acc(vport, ELS_CMD_FLOGI, cmdiocb, ndlp, NULL);
8414
8415 /* Now lets put fc_myDID back to what its supposed to be */
8416 vport->fc_myDID = did;
8417
8418 return 0;
8419 }
8420
8421 /**
8422 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
8423 * @vport: pointer to a host virtual N_Port data structure.
8424 * @cmdiocb: pointer to lpfc command iocb data structure.
8425 * @ndlp: pointer to a node-list data structure.
8426 *
8427 * This routine processes Request Node Identification Data (RNID) IOCB
8428 * received as an ELS unsolicited event. Only when the RNID specified format
8429 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
8430 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
8431 * Accept (ACC) the RNID ELS command. All the other RNID formats are
8432 * rejected by invoking the lpfc_els_rsp_reject() routine.
8433 *
8434 * Return code
8435 * 0 - Successfully processed rnid iocb (currently always return 0)
8436 **/
8437 static int
lpfc_els_rcv_rnid(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)8438 lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8439 struct lpfc_nodelist *ndlp)
8440 {
8441 struct lpfc_dmabuf *pcmd;
8442 uint32_t *lp;
8443 RNID *rn;
8444 struct ls_rjt stat;
8445
8446 pcmd = cmdiocb->cmd_dmabuf;
8447 lp = (uint32_t *) pcmd->virt;
8448
8449 lp++;
8450 rn = (RNID *) lp;
8451
8452 /* RNID received */
8453
8454 switch (rn->Format) {
8455 case 0:
8456 case RNID_TOPOLOGY_DISC:
8457 /* Send back ACC */
8458 lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
8459 break;
8460 default:
8461 /* Reject this request because format not supported */
8462 stat.un.b.lsRjtRsvd0 = 0;
8463 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8464 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8465 stat.un.b.vendorUnique = 0;
8466 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
8467 NULL);
8468 }
8469 return 0;
8470 }
8471
8472 /**
8473 * lpfc_els_rcv_echo - Process an unsolicited echo iocb
8474 * @vport: pointer to a host virtual N_Port data structure.
8475 * @cmdiocb: pointer to lpfc command iocb data structure.
8476 * @ndlp: pointer to a node-list data structure.
8477 *
8478 * Return code
8479 * 0 - Successfully processed echo iocb (currently always return 0)
8480 **/
8481 static int
lpfc_els_rcv_echo(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)8482 lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8483 struct lpfc_nodelist *ndlp)
8484 {
8485 uint8_t *pcmd;
8486
8487 pcmd = (uint8_t *)cmdiocb->cmd_dmabuf->virt;
8488
8489 /* skip over first word of echo command to find echo data */
8490 pcmd += sizeof(uint32_t);
8491
8492 lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
8493 return 0;
8494 }
8495
8496 /**
8497 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
8498 * @vport: pointer to a host virtual N_Port data structure.
8499 * @cmdiocb: pointer to lpfc command iocb data structure.
8500 * @ndlp: pointer to a node-list data structure.
8501 *
8502 * This routine processes a Link Incident Report Registration(LIRR) IOCB
8503 * received as an ELS unsolicited event. Currently, this function just invokes
8504 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
8505 *
8506 * Return code
8507 * 0 - Successfully processed lirr iocb (currently always return 0)
8508 **/
8509 static int
lpfc_els_rcv_lirr(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)8510 lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8511 struct lpfc_nodelist *ndlp)
8512 {
8513 struct ls_rjt stat;
8514
8515 /* For now, unconditionally reject this command */
8516 stat.un.b.lsRjtRsvd0 = 0;
8517 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8518 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8519 stat.un.b.vendorUnique = 0;
8520 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8521 return 0;
8522 }
8523
8524 /**
8525 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
8526 * @vport: pointer to a host virtual N_Port data structure.
8527 * @cmdiocb: pointer to lpfc command iocb data structure.
8528 * @ndlp: pointer to a node-list data structure.
8529 *
8530 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
8531 * received as an ELS unsolicited event. A request to RRQ shall only
8532 * be accepted if the Originator Nx_Port N_Port_ID or the Responder
8533 * Nx_Port N_Port_ID of the target Exchange is the same as the
8534 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
8535 * not accepted, an LS_RJT with reason code "Unable to perform
8536 * command request" and reason code explanation "Invalid Originator
8537 * S_ID" shall be returned. For now, we just unconditionally accept
8538 * RRQ from the target.
8539 **/
8540 static void
lpfc_els_rcv_rrq(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)8541 lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8542 struct lpfc_nodelist *ndlp)
8543 {
8544 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
8545 if (vport->phba->sli_rev == LPFC_SLI_REV4)
8546 lpfc_els_clear_rrq(vport, cmdiocb, ndlp);
8547 }
8548
8549 /**
8550 * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
8551 * @phba: pointer to lpfc hba data structure.
8552 * @pmb: pointer to the driver internal queue element for mailbox command.
8553 *
8554 * This routine is the completion callback function for the MBX_READ_LNK_STAT
8555 * mailbox command. This callback function is to actually send the Accept
8556 * (ACC) response to a Read Link Status (RLS) unsolicited IOCB event. It
8557 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
8558 * mailbox command, constructs the RLS response with the link statistics
8559 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
8560 * response to the RLS.
8561 *
8562 * Note that the ndlp reference count will be incremented by 1 for holding the
8563 * ndlp and the reference to ndlp will be stored into the ndlp field of
8564 * the IOCB for the completion callback function to the RLS Accept Response
8565 * ELS IOCB command.
8566 *
8567 **/
8568 static void
lpfc_els_rsp_rls_acc(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)8569 lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
8570 {
8571 int rc = 0;
8572 MAILBOX_t *mb;
8573 IOCB_t *icmd;
8574 union lpfc_wqe128 *wqe;
8575 struct RLS_RSP *rls_rsp;
8576 uint8_t *pcmd;
8577 struct lpfc_iocbq *elsiocb;
8578 struct lpfc_nodelist *ndlp;
8579 uint16_t oxid;
8580 uint16_t rxid;
8581 uint32_t cmdsize;
8582 u32 ulp_context;
8583
8584 mb = &pmb->u.mb;
8585
8586 ndlp = pmb->ctx_ndlp;
8587 rxid = (uint16_t)(pmb->ctx_u.ox_rx_id & 0xffff);
8588 oxid = (uint16_t)((pmb->ctx_u.ox_rx_id >> 16) & 0xffff);
8589 memset(&pmb->ctx_u, 0, sizeof(pmb->ctx_u));
8590 pmb->ctx_ndlp = NULL;
8591
8592 if (mb->mbxStatus) {
8593 mempool_free(pmb, phba->mbox_mem_pool);
8594 return;
8595 }
8596
8597 cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
8598 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
8599 lpfc_max_els_tries, ndlp,
8600 ndlp->nlp_DID, ELS_CMD_ACC);
8601
8602 /* Decrement the ndlp reference count from previous mbox command */
8603 lpfc_nlp_put(ndlp);
8604
8605 if (!elsiocb) {
8606 mempool_free(pmb, phba->mbox_mem_pool);
8607 return;
8608 }
8609
8610 ulp_context = get_job_ulpcontext(phba, elsiocb);
8611 if (phba->sli_rev == LPFC_SLI_REV4) {
8612 wqe = &elsiocb->wqe;
8613 /* Xri / rx_id */
8614 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, rxid);
8615 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, oxid);
8616 } else {
8617 icmd = &elsiocb->iocb;
8618 icmd->ulpContext = rxid;
8619 icmd->unsli3.rcvsli3.ox_id = oxid;
8620 }
8621
8622 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8623 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8624 pcmd += sizeof(uint32_t); /* Skip past command */
8625 rls_rsp = (struct RLS_RSP *)pcmd;
8626
8627 rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
8628 rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
8629 rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
8630 rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
8631 rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
8632 rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
8633 mempool_free(pmb, phba->mbox_mem_pool);
8634 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
8635 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
8636 "2874 Xmit ELS RLS ACC response tag x%x xri x%x, "
8637 "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x\n",
8638 elsiocb->iotag, ulp_context,
8639 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
8640 ndlp->nlp_rpi);
8641 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
8642 phba->fc_stat.elsXmitACC++;
8643 elsiocb->ndlp = lpfc_nlp_get(ndlp);
8644 if (!elsiocb->ndlp) {
8645 lpfc_els_free_iocb(phba, elsiocb);
8646 return;
8647 }
8648
8649 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8650 if (rc == IOCB_ERROR) {
8651 lpfc_els_free_iocb(phba, elsiocb);
8652 lpfc_nlp_put(ndlp);
8653 }
8654 return;
8655 }
8656
8657 /**
8658 * lpfc_els_rcv_rls - Process an unsolicited rls iocb
8659 * @vport: pointer to a host virtual N_Port data structure.
8660 * @cmdiocb: pointer to lpfc command iocb data structure.
8661 * @ndlp: pointer to a node-list data structure.
8662 *
8663 * This routine processes Read Link Status (RLS) IOCB received as an
8664 * ELS unsolicited event. It first checks the remote port state. If the
8665 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
8666 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
8667 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
8668 * for reading the HBA link statistics. It is for the callback function,
8669 * lpfc_els_rsp_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
8670 * to actually sending out RPL Accept (ACC) response.
8671 *
8672 * Return codes
8673 * 0 - Successfully processed rls iocb (currently always return 0)
8674 **/
8675 static int
lpfc_els_rcv_rls(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)8676 lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8677 struct lpfc_nodelist *ndlp)
8678 {
8679 struct lpfc_hba *phba = vport->phba;
8680 LPFC_MBOXQ_t *mbox;
8681 struct ls_rjt stat;
8682 u32 ctx = get_job_ulpcontext(phba, cmdiocb);
8683 u32 ox_id = get_job_rcvoxid(phba, cmdiocb);
8684
8685 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
8686 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
8687 /* reject the unsolicited RLS request and done with it */
8688 goto reject_out;
8689
8690 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
8691 if (mbox) {
8692 lpfc_read_lnk_stat(phba, mbox);
8693 mbox->ctx_u.ox_rx_id = ox_id << 16 | ctx;
8694 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
8695 if (!mbox->ctx_ndlp)
8696 goto node_err;
8697 mbox->vport = vport;
8698 mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
8699 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
8700 != MBX_NOT_FINISHED)
8701 /* Mbox completion will send ELS Response */
8702 return 0;
8703 /* Decrement reference count used for the failed mbox
8704 * command.
8705 */
8706 lpfc_nlp_put(ndlp);
8707 node_err:
8708 mempool_free(mbox, phba->mbox_mem_pool);
8709 }
8710 reject_out:
8711 /* issue rejection response */
8712 stat.un.b.lsRjtRsvd0 = 0;
8713 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8714 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8715 stat.un.b.vendorUnique = 0;
8716 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8717 return 0;
8718 }
8719
8720 /**
8721 * lpfc_els_rcv_rtv - Process an unsolicited rtv iocb
8722 * @vport: pointer to a host virtual N_Port data structure.
8723 * @cmdiocb: pointer to lpfc command iocb data structure.
8724 * @ndlp: pointer to a node-list data structure.
8725 *
8726 * This routine processes Read Timout Value (RTV) IOCB received as an
8727 * ELS unsolicited event. It first checks the remote port state. If the
8728 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
8729 * state, it invokes the lpfc_els_rsl_reject() routine to send the reject
8730 * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
8731 * Value (RTV) unsolicited IOCB event.
8732 *
8733 * Note that the ndlp reference count will be incremented by 1 for holding the
8734 * ndlp and the reference to ndlp will be stored into the ndlp field of
8735 * the IOCB for the completion callback function to the RTV Accept Response
8736 * ELS IOCB command.
8737 *
8738 * Return codes
8739 * 0 - Successfully processed rtv iocb (currently always return 0)
8740 **/
8741 static int
lpfc_els_rcv_rtv(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)8742 lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
8743 struct lpfc_nodelist *ndlp)
8744 {
8745 int rc = 0;
8746 IOCB_t *icmd;
8747 union lpfc_wqe128 *wqe;
8748 struct lpfc_hba *phba = vport->phba;
8749 struct ls_rjt stat;
8750 struct RTV_RSP *rtv_rsp;
8751 uint8_t *pcmd;
8752 struct lpfc_iocbq *elsiocb;
8753 uint32_t cmdsize;
8754 u32 ulp_context;
8755
8756 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
8757 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
8758 /* reject the unsolicited RTV request and done with it */
8759 goto reject_out;
8760
8761 cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
8762 elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
8763 lpfc_max_els_tries, ndlp,
8764 ndlp->nlp_DID, ELS_CMD_ACC);
8765
8766 if (!elsiocb)
8767 return 1;
8768
8769 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8770 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8771 pcmd += sizeof(uint32_t); /* Skip past command */
8772
8773 ulp_context = get_job_ulpcontext(phba, elsiocb);
8774 /* use the command's xri in the response */
8775 if (phba->sli_rev == LPFC_SLI_REV4) {
8776 wqe = &elsiocb->wqe;
8777 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
8778 get_job_ulpcontext(phba, cmdiocb));
8779 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
8780 get_job_rcvoxid(phba, cmdiocb));
8781 } else {
8782 icmd = &elsiocb->iocb;
8783 icmd->ulpContext = get_job_ulpcontext(phba, cmdiocb);
8784 icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, cmdiocb);
8785 }
8786
8787 rtv_rsp = (struct RTV_RSP *)pcmd;
8788
8789 /* populate RTV payload */
8790 rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
8791 rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
8792 bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
8793 bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
8794 rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);
8795
8796 /* Xmit ELS RLS ACC response tag <ulpIoTag> */
8797 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
8798 "2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
8799 "did x%x, nlp_flag x%lx, nlp_state x%x, rpi x%x, "
8800 "Data: x%x x%x x%x\n",
8801 elsiocb->iotag, ulp_context,
8802 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
8803 ndlp->nlp_rpi,
8804 rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
8805 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
8806 phba->fc_stat.elsXmitACC++;
8807 elsiocb->ndlp = lpfc_nlp_get(ndlp);
8808 if (!elsiocb->ndlp) {
8809 lpfc_els_free_iocb(phba, elsiocb);
8810 return 0;
8811 }
8812
8813 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8814 if (rc == IOCB_ERROR) {
8815 lpfc_els_free_iocb(phba, elsiocb);
8816 lpfc_nlp_put(ndlp);
8817 }
8818 return 0;
8819
8820 reject_out:
8821 /* issue rejection response */
8822 stat.un.b.lsRjtRsvd0 = 0;
8823 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
8824 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
8825 stat.un.b.vendorUnique = 0;
8826 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
8827 return 0;
8828 }
8829
8830 /* lpfc_issue_els_rrq - Process an unsolicited rrq iocb
8831 * @vport: pointer to a host virtual N_Port data structure.
8832 * @ndlp: pointer to a node-list data structure.
8833 * @did: DID of the target.
8834 * @rrq: Pointer to the rrq struct.
8835 *
8836 * Build a ELS RRQ command and send it to the target. If the issue_iocb is
8837 * successful, the completion handler will clear the RRQ.
8838 *
8839 * Return codes
8840 * 0 - Successfully sent rrq els iocb.
8841 * 1 - Failed to send rrq els iocb.
8842 **/
8843 static int
lpfc_issue_els_rrq(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t did,struct lpfc_node_rrq * rrq)8844 lpfc_issue_els_rrq(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
8845 uint32_t did, struct lpfc_node_rrq *rrq)
8846 {
8847 struct lpfc_hba *phba = vport->phba;
8848 struct RRQ *els_rrq;
8849 struct lpfc_iocbq *elsiocb;
8850 uint8_t *pcmd;
8851 uint16_t cmdsize;
8852 int ret;
8853
8854 if (!ndlp)
8855 return 1;
8856
8857 /* If ndlp is not NULL, we will bump the reference count on it */
8858 cmdsize = (sizeof(uint32_t) + sizeof(struct RRQ));
8859 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, did,
8860 ELS_CMD_RRQ);
8861 if (!elsiocb)
8862 return 1;
8863
8864 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
8865
8866 /* For RRQ request, remainder of payload is Exchange IDs */
8867 *((uint32_t *) (pcmd)) = ELS_CMD_RRQ;
8868 pcmd += sizeof(uint32_t);
8869 els_rrq = (struct RRQ *) pcmd;
8870
8871 bf_set(rrq_oxid, els_rrq, phba->sli4_hba.xri_ids[rrq->xritag]);
8872 bf_set(rrq_rxid, els_rrq, rrq->rxid);
8873 bf_set(rrq_did, els_rrq, vport->fc_myDID);
8874 els_rrq->rrq = cpu_to_be32(els_rrq->rrq);
8875 els_rrq->rrq_exchg = cpu_to_be32(els_rrq->rrq_exchg);
8876
8877
8878 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
8879 "Issue RRQ: did:x%x",
8880 did, rrq->xritag, rrq->rxid);
8881 elsiocb->context_un.rrq = rrq;
8882 elsiocb->cmd_cmpl = lpfc_cmpl_els_rrq;
8883
8884 elsiocb->ndlp = lpfc_nlp_get(ndlp);
8885 if (!elsiocb->ndlp)
8886 goto io_err;
8887
8888 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
8889 if (ret == IOCB_ERROR) {
8890 lpfc_nlp_put(ndlp);
8891 goto io_err;
8892 }
8893 return 0;
8894
8895 io_err:
8896 lpfc_els_free_iocb(phba, elsiocb);
8897 return 1;
8898 }
8899
8900 /**
8901 * lpfc_send_rrq - Sends ELS RRQ if needed.
8902 * @phba: pointer to lpfc hba data structure.
8903 * @rrq: pointer to the active rrq.
8904 *
8905 * This routine will call the lpfc_issue_els_rrq if the rrq is
8906 * still active for the xri. If this function returns a failure then
8907 * the caller needs to clean up the RRQ by calling lpfc_clr_active_rrq.
8908 *
8909 * Returns 0 Success.
8910 * 1 Failure.
8911 **/
8912 int
lpfc_send_rrq(struct lpfc_hba * phba,struct lpfc_node_rrq * rrq)8913 lpfc_send_rrq(struct lpfc_hba *phba, struct lpfc_node_rrq *rrq)
8914 {
8915 struct lpfc_nodelist *ndlp = lpfc_findnode_did(rrq->vport,
8916 rrq->nlp_DID);
8917 if (!ndlp)
8918 return 1;
8919
8920 if (lpfc_test_rrq_active(phba, ndlp, rrq->xritag))
8921 return lpfc_issue_els_rrq(rrq->vport, ndlp,
8922 rrq->nlp_DID, rrq);
8923 else
8924 return 1;
8925 }
8926
8927 /**
8928 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
8929 * @vport: pointer to a host virtual N_Port data structure.
8930 * @cmdsize: size of the ELS command.
8931 * @oldiocb: pointer to the original lpfc command iocb data structure.
8932 * @ndlp: pointer to a node-list data structure.
8933 *
8934 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
8935 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
8936 *
8937 * Note that the ndlp reference count will be incremented by 1 for holding the
8938 * ndlp and the reference to ndlp will be stored into the ndlp field of
8939 * the IOCB for the completion callback function to the RPL Accept Response
8940 * ELS command.
8941 *
8942 * Return code
8943 * 0 - Successfully issued ACC RPL ELS command
8944 * 1 - Failed to issue ACC RPL ELS command
8945 **/
8946 static int
lpfc_els_rsp_rpl_acc(struct lpfc_vport * vport,uint16_t cmdsize,struct lpfc_iocbq * oldiocb,struct lpfc_nodelist * ndlp)8947 lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
8948 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
8949 {
8950 int rc = 0;
8951 struct lpfc_hba *phba = vport->phba;
8952 IOCB_t *icmd;
8953 union lpfc_wqe128 *wqe;
8954 RPL_RSP rpl_rsp;
8955 struct lpfc_iocbq *elsiocb;
8956 uint8_t *pcmd;
8957 u32 ulp_context;
8958
8959 elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
8960 ndlp->nlp_DID, ELS_CMD_ACC);
8961
8962 if (!elsiocb)
8963 return 1;
8964
8965 ulp_context = get_job_ulpcontext(phba, elsiocb);
8966 if (phba->sli_rev == LPFC_SLI_REV4) {
8967 wqe = &elsiocb->wqe;
8968 /* Xri / rx_id */
8969 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com,
8970 get_job_ulpcontext(phba, oldiocb));
8971 bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com,
8972 get_job_rcvoxid(phba, oldiocb));
8973 } else {
8974 icmd = &elsiocb->iocb;
8975 icmd->ulpContext = get_job_ulpcontext(phba, oldiocb);
8976 icmd->unsli3.rcvsli3.ox_id = get_job_rcvoxid(phba, oldiocb);
8977 }
8978
8979 pcmd = elsiocb->cmd_dmabuf->virt;
8980 *((uint32_t *) (pcmd)) = ELS_CMD_ACC;
8981 pcmd += sizeof(uint16_t);
8982 *((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
8983 pcmd += sizeof(uint16_t);
8984
8985 /* Setup the RPL ACC payload */
8986 rpl_rsp.listLen = be32_to_cpu(1);
8987 rpl_rsp.index = 0;
8988 rpl_rsp.port_num_blk.portNum = 0;
8989 rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
8990 memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
8991 sizeof(struct lpfc_name));
8992 memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
8993 /* Xmit ELS RPL ACC response tag <ulpIoTag> */
8994 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
8995 "0120 Xmit ELS RPL ACC response tag x%x "
8996 "xri x%x, did x%x, nlp_flag x%lx, nlp_state x%x, "
8997 "rpi x%x\n",
8998 elsiocb->iotag, ulp_context,
8999 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
9000 ndlp->nlp_rpi);
9001 elsiocb->cmd_cmpl = lpfc_cmpl_els_rsp;
9002 phba->fc_stat.elsXmitACC++;
9003 elsiocb->ndlp = lpfc_nlp_get(ndlp);
9004 if (!elsiocb->ndlp) {
9005 lpfc_els_free_iocb(phba, elsiocb);
9006 return 1;
9007 }
9008
9009 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
9010 if (rc == IOCB_ERROR) {
9011 lpfc_els_free_iocb(phba, elsiocb);
9012 lpfc_nlp_put(ndlp);
9013 return 1;
9014 }
9015
9016 return 0;
9017 }
9018
9019 /**
9020 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
9021 * @vport: pointer to a host virtual N_Port data structure.
9022 * @cmdiocb: pointer to lpfc command iocb data structure.
9023 * @ndlp: pointer to a node-list data structure.
9024 *
9025 * This routine processes Read Port List (RPL) IOCB received as an ELS
9026 * unsolicited event. It first checks the remote port state. If the remote
9027 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
9028 * invokes the lpfc_els_rsp_reject() routine to send reject response.
9029 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
9030 * to accept the RPL.
9031 *
9032 * Return code
9033 * 0 - Successfully processed rpl iocb (currently always return 0)
9034 **/
9035 static int
lpfc_els_rcv_rpl(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)9036 lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9037 struct lpfc_nodelist *ndlp)
9038 {
9039 struct lpfc_dmabuf *pcmd;
9040 uint32_t *lp;
9041 uint32_t maxsize;
9042 uint16_t cmdsize;
9043 RPL *rpl;
9044 struct ls_rjt stat;
9045
9046 if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
9047 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
9048 /* issue rejection response */
9049 stat.un.b.lsRjtRsvd0 = 0;
9050 stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
9051 stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
9052 stat.un.b.vendorUnique = 0;
9053 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
9054 NULL);
9055 /* rejected the unsolicited RPL request and done with it */
9056 return 0;
9057 }
9058
9059 pcmd = cmdiocb->cmd_dmabuf;
9060 lp = (uint32_t *) pcmd->virt;
9061 rpl = (RPL *) (lp + 1);
9062 maxsize = be32_to_cpu(rpl->maxsize);
9063
9064 /* We support only one port */
9065 if ((rpl->index == 0) &&
9066 ((maxsize == 0) ||
9067 ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
9068 cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
9069 } else {
9070 cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
9071 }
9072 lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
9073
9074 return 0;
9075 }
9076
9077 /**
9078 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
9079 * @vport: pointer to a virtual N_Port data structure.
9080 * @cmdiocb: pointer to lpfc command iocb data structure.
9081 * @ndlp: pointer to a node-list data structure.
9082 *
9083 * This routine processes Fibre Channel Address Resolution Protocol
9084 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
9085 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
9086 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
9087 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
9088 * remote PortName is compared against the FC PortName stored in the @vport
9089 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
9090 * compared against the FC NodeName stored in the @vport data structure.
9091 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
9092 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
9093 * invoked to send out FARP Response to the remote node. Before sending the
9094 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
9095 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
9096 * routine is invoked to log into the remote port first.
9097 *
9098 * Return code
9099 * 0 - Either the FARP Match Mode not supported or successfully processed
9100 **/
9101 static int
lpfc_els_rcv_farp(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)9102 lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9103 struct lpfc_nodelist *ndlp)
9104 {
9105 struct lpfc_dmabuf *pcmd;
9106 uint32_t *lp;
9107 FARP *fp;
9108 uint32_t cnt, did;
9109
9110 did = get_job_els_rsp64_did(vport->phba, cmdiocb);
9111 pcmd = cmdiocb->cmd_dmabuf;
9112 lp = (uint32_t *) pcmd->virt;
9113
9114 lp++;
9115 fp = (FARP *) lp;
9116 /* FARP-REQ received from DID <did> */
9117 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9118 "0601 FARP-REQ received from DID x%x\n", did);
9119 /* We will only support match on WWPN or WWNN */
9120 if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
9121 return 0;
9122 }
9123
9124 cnt = 0;
9125 /* If this FARP command is searching for my portname */
9126 if (fp->Mflags & FARP_MATCH_PORT) {
9127 if (memcmp(&fp->RportName, &vport->fc_portname,
9128 sizeof(struct lpfc_name)) == 0)
9129 cnt = 1;
9130 }
9131
9132 /* If this FARP command is searching for my nodename */
9133 if (fp->Mflags & FARP_MATCH_NODE) {
9134 if (memcmp(&fp->RnodeName, &vport->fc_nodename,
9135 sizeof(struct lpfc_name)) == 0)
9136 cnt = 1;
9137 }
9138
9139 if (cnt) {
9140 if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
9141 (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
9142 /* Log back into the node before sending the FARP. */
9143 if (fp->Rflags & FARP_REQUEST_PLOGI) {
9144 ndlp->nlp_prev_state = ndlp->nlp_state;
9145 lpfc_nlp_set_state(vport, ndlp,
9146 NLP_STE_PLOGI_ISSUE);
9147 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
9148 }
9149
9150 /* Send a FARP response to that node */
9151 if (fp->Rflags & FARP_REQUEST_FARPR)
9152 lpfc_issue_els_farpr(vport, did, 0);
9153 }
9154 }
9155 return 0;
9156 }
9157
9158 /**
9159 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
9160 * @vport: pointer to a host virtual N_Port data structure.
9161 * @cmdiocb: pointer to lpfc command iocb data structure.
9162 * @ndlp: pointer to a node-list data structure.
9163 *
9164 * This routine processes Fibre Channel Address Resolution Protocol
9165 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
9166 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
9167 * the FARP response request.
9168 *
9169 * Return code
9170 * 0 - Successfully processed FARPR IOCB (currently always return 0)
9171 **/
9172 static int
lpfc_els_rcv_farpr(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)9173 lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9174 struct lpfc_nodelist *ndlp)
9175 {
9176 uint32_t did;
9177
9178 did = get_job_els_rsp64_did(vport->phba, cmdiocb);
9179
9180 /* FARP-RSP received from DID <did> */
9181 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9182 "0600 FARP-RSP received from DID x%x\n", did);
9183 /* ACCEPT the Farp resp request */
9184 lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
9185
9186 return 0;
9187 }
9188
9189 /**
9190 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
9191 * @vport: pointer to a host virtual N_Port data structure.
9192 * @cmdiocb: pointer to lpfc command iocb data structure.
9193 * @fan_ndlp: pointer to a node-list data structure.
9194 *
9195 * This routine processes a Fabric Address Notification (FAN) IOCB
9196 * command received as an ELS unsolicited event. The FAN ELS command will
9197 * only be processed on a physical port (i.e., the @vport represents the
9198 * physical port). The fabric NodeName and PortName from the FAN IOCB are
9199 * compared against those in the phba data structure. If any of those is
9200 * different, the lpfc_initial_flogi() routine is invoked to initialize
9201 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
9202 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
9203 * is invoked to register login to the fabric.
9204 *
9205 * Return code
9206 * 0 - Successfully processed fan iocb (currently always return 0).
9207 **/
9208 static int
lpfc_els_rcv_fan(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * fan_ndlp)9209 lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9210 struct lpfc_nodelist *fan_ndlp)
9211 {
9212 struct lpfc_hba *phba = vport->phba;
9213 uint32_t *lp;
9214 FAN *fp;
9215
9216 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
9217 lp = (uint32_t *)cmdiocb->cmd_dmabuf->virt;
9218 fp = (FAN *) ++lp;
9219 /* FAN received; Fan does not have a reply sequence */
9220 if ((vport == phba->pport) &&
9221 (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
9222 if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
9223 sizeof(struct lpfc_name))) ||
9224 (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
9225 sizeof(struct lpfc_name)))) {
9226 /* This port has switched fabrics. FLOGI is required */
9227 lpfc_issue_init_vfi(vport);
9228 } else {
9229 /* FAN verified - skip FLOGI */
9230 vport->fc_myDID = vport->fc_prevDID;
9231 if (phba->sli_rev < LPFC_SLI_REV4)
9232 lpfc_issue_fabric_reglogin(vport);
9233 else {
9234 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9235 "3138 Need register VFI: (x%x/%x)\n",
9236 vport->fc_prevDID, vport->fc_myDID);
9237 lpfc_issue_reg_vfi(vport);
9238 }
9239 }
9240 }
9241 return 0;
9242 }
9243
9244 /**
9245 * lpfc_els_rcv_edc - Process an unsolicited EDC iocb
9246 * @vport: pointer to a host virtual N_Port data structure.
9247 * @cmdiocb: pointer to lpfc command iocb data structure.
9248 * @ndlp: pointer to a node-list data structure.
9249 *
9250 * Return code
9251 * 0 - Successfully processed echo iocb (currently always return 0)
9252 **/
9253 static int
lpfc_els_rcv_edc(struct lpfc_vport * vport,struct lpfc_iocbq * cmdiocb,struct lpfc_nodelist * ndlp)9254 lpfc_els_rcv_edc(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
9255 struct lpfc_nodelist *ndlp)
9256 {
9257 struct lpfc_hba *phba = vport->phba;
9258 struct fc_els_edc *edc_req;
9259 struct fc_tlv_desc *tlv;
9260 uint8_t *payload;
9261 uint32_t *ptr, dtag;
9262 const char *dtag_nm;
9263 int desc_cnt = 0, bytes_remain;
9264 struct fc_diag_lnkflt_desc *plnkflt;
9265
9266 payload = cmdiocb->cmd_dmabuf->virt;
9267
9268 edc_req = (struct fc_els_edc *)payload;
9269 bytes_remain = be32_to_cpu(edc_req->desc_len);
9270
9271 ptr = (uint32_t *)payload;
9272 lpfc_printf_vlog(vport, KERN_INFO,
9273 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9274 "3319 Rcv EDC payload len %d: x%x x%x x%x\n",
9275 bytes_remain, be32_to_cpu(*ptr),
9276 be32_to_cpu(*(ptr + 1)), be32_to_cpu(*(ptr + 2)));
9277
9278 /* No signal support unless there is a congestion descriptor */
9279 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
9280 phba->cgn_sig_freq = 0;
9281 phba->cgn_reg_fpin = LPFC_CGN_FPIN_ALARM | LPFC_CGN_FPIN_WARN;
9282
9283 if (bytes_remain <= 0)
9284 goto out;
9285
9286 tlv = edc_req->desc;
9287
9288 /*
9289 * cycle through EDC diagnostic descriptors to find the
9290 * congestion signaling capability descriptor
9291 */
9292 while (bytes_remain) {
9293 if (bytes_remain < FC_TLV_DESC_HDR_SZ) {
9294 lpfc_printf_log(phba, KERN_WARNING,
9295 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9296 "6464 Truncated TLV hdr on "
9297 "Diagnostic descriptor[%d]\n",
9298 desc_cnt);
9299 goto out;
9300 }
9301
9302 dtag = be32_to_cpu(tlv->desc_tag);
9303 switch (dtag) {
9304 case ELS_DTAG_LNK_FAULT_CAP:
9305 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
9306 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
9307 sizeof(struct fc_diag_lnkflt_desc)) {
9308 lpfc_printf_log(phba, KERN_WARNING,
9309 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9310 "6465 Truncated Link Fault Diagnostic "
9311 "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
9312 desc_cnt, bytes_remain,
9313 FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
9314 sizeof(struct fc_diag_lnkflt_desc));
9315 goto out;
9316 }
9317 plnkflt = (struct fc_diag_lnkflt_desc *)tlv;
9318 lpfc_printf_log(phba, KERN_INFO,
9319 LOG_ELS | LOG_LDS_EVENT,
9320 "4626 Link Fault Desc Data: x%08x len x%x "
9321 "da x%x dd x%x interval x%x\n",
9322 be32_to_cpu(plnkflt->desc_tag),
9323 be32_to_cpu(plnkflt->desc_len),
9324 be32_to_cpu(
9325 plnkflt->degrade_activate_threshold),
9326 be32_to_cpu(
9327 plnkflt->degrade_deactivate_threshold),
9328 be32_to_cpu(plnkflt->fec_degrade_interval));
9329 break;
9330 case ELS_DTAG_CG_SIGNAL_CAP:
9331 if (bytes_remain < FC_TLV_DESC_SZ_FROM_LENGTH(tlv) ||
9332 FC_TLV_DESC_SZ_FROM_LENGTH(tlv) !=
9333 sizeof(struct fc_diag_cg_sig_desc)) {
9334 lpfc_printf_log(
9335 phba, KERN_WARNING, LOG_CGN_MGMT,
9336 "6466 Truncated cgn signal Diagnostic "
9337 "descriptor[%d]: %d vs 0x%zx 0x%zx\n",
9338 desc_cnt, bytes_remain,
9339 FC_TLV_DESC_SZ_FROM_LENGTH(tlv),
9340 sizeof(struct fc_diag_cg_sig_desc));
9341 goto out;
9342 }
9343
9344 phba->cgn_reg_fpin = phba->cgn_init_reg_fpin;
9345 phba->cgn_reg_signal = phba->cgn_init_reg_signal;
9346
9347 /* We start negotiation with lpfc_fabric_cgn_frequency.
9348 * When we process the EDC, we will settle on the
9349 * higher frequency.
9350 */
9351 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
9352
9353 lpfc_least_capable_settings(
9354 phba, (struct fc_diag_cg_sig_desc *)tlv);
9355 break;
9356 default:
9357 dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
9358 lpfc_printf_log(phba, KERN_WARNING,
9359 LOG_ELS | LOG_CGN_MGMT | LOG_LDS_EVENT,
9360 "6467 unknown Diagnostic "
9361 "Descriptor[%d]: tag x%x (%s)\n",
9362 desc_cnt, dtag, dtag_nm);
9363 }
9364 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
9365 tlv = fc_tlv_next_desc(tlv);
9366 desc_cnt++;
9367 }
9368 out:
9369 /* Need to send back an ACC */
9370 lpfc_issue_els_edc_rsp(vport, cmdiocb, ndlp);
9371
9372 lpfc_config_cgn_signal(phba);
9373 return 0;
9374 }
9375
9376 /**
9377 * lpfc_els_timeout - Handler funciton to the els timer
9378 * @t: timer context used to obtain the vport.
9379 *
9380 * This routine is invoked by the ELS timer after timeout. It posts the ELS
9381 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
9382 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
9383 * up the worker thread. It is for the worker thread to invoke the routine
9384 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
9385 **/
9386 void
lpfc_els_timeout(struct timer_list * t)9387 lpfc_els_timeout(struct timer_list *t)
9388 {
9389 struct lpfc_vport *vport = from_timer(vport, t, els_tmofunc);
9390 struct lpfc_hba *phba = vport->phba;
9391 uint32_t tmo_posted;
9392 unsigned long iflag;
9393
9394 spin_lock_irqsave(&vport->work_port_lock, iflag);
9395 tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
9396 if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag))
9397 vport->work_port_events |= WORKER_ELS_TMO;
9398 spin_unlock_irqrestore(&vport->work_port_lock, iflag);
9399
9400 if (!tmo_posted && !test_bit(FC_UNLOADING, &vport->load_flag))
9401 lpfc_worker_wake_up(phba);
9402 return;
9403 }
9404
9405
9406 /**
9407 * lpfc_els_timeout_handler - Process an els timeout event
9408 * @vport: pointer to a virtual N_Port data structure.
9409 *
9410 * This routine is the actual handler function that processes an ELS timeout
9411 * event. It walks the ELS ring to get and abort all the IOCBs (except the
9412 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
9413 * invoking the lpfc_sli_issue_abort_iotag() routine.
9414 **/
9415 void
lpfc_els_timeout_handler(struct lpfc_vport * vport)9416 lpfc_els_timeout_handler(struct lpfc_vport *vport)
9417 {
9418 struct lpfc_hba *phba = vport->phba;
9419 struct lpfc_sli_ring *pring;
9420 struct lpfc_iocbq *tmp_iocb, *piocb;
9421 IOCB_t *cmd = NULL;
9422 struct lpfc_dmabuf *pcmd;
9423 uint32_t els_command = 0;
9424 uint32_t timeout;
9425 uint32_t remote_ID = 0xffffffff;
9426 LIST_HEAD(abort_list);
9427 u32 ulp_command = 0, ulp_context = 0, did = 0, iotag = 0;
9428
9429
9430 timeout = (uint32_t)(phba->fc_ratov << 1);
9431
9432 pring = lpfc_phba_elsring(phba);
9433 if (unlikely(!pring))
9434 return;
9435
9436 if (test_bit(FC_UNLOADING, &phba->pport->load_flag))
9437 return;
9438
9439 spin_lock_irq(&phba->hbalock);
9440 if (phba->sli_rev == LPFC_SLI_REV4)
9441 spin_lock(&pring->ring_lock);
9442
9443 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
9444 ulp_command = get_job_cmnd(phba, piocb);
9445 ulp_context = get_job_ulpcontext(phba, piocb);
9446 did = get_job_els_rsp64_did(phba, piocb);
9447
9448 if (phba->sli_rev == LPFC_SLI_REV4) {
9449 iotag = get_wqe_reqtag(piocb);
9450 } else {
9451 cmd = &piocb->iocb;
9452 iotag = cmd->ulpIoTag;
9453 }
9454
9455 if ((piocb->cmd_flag & LPFC_IO_LIBDFC) != 0 ||
9456 ulp_command == CMD_ABORT_XRI_CX ||
9457 ulp_command == CMD_ABORT_XRI_CN ||
9458 ulp_command == CMD_CLOSE_XRI_CN)
9459 continue;
9460
9461 if (piocb->vport != vport)
9462 continue;
9463
9464 pcmd = piocb->cmd_dmabuf;
9465 if (pcmd)
9466 els_command = *(uint32_t *) (pcmd->virt);
9467
9468 if (els_command == ELS_CMD_FARP ||
9469 els_command == ELS_CMD_FARPR ||
9470 els_command == ELS_CMD_FDISC)
9471 continue;
9472
9473 if (piocb->drvrTimeout > 0) {
9474 if (piocb->drvrTimeout >= timeout)
9475 piocb->drvrTimeout -= timeout;
9476 else
9477 piocb->drvrTimeout = 0;
9478 continue;
9479 }
9480
9481 remote_ID = 0xffffffff;
9482 if (ulp_command != CMD_GEN_REQUEST64_CR) {
9483 remote_ID = did;
9484 } else {
9485 struct lpfc_nodelist *ndlp;
9486 ndlp = __lpfc_findnode_rpi(vport, ulp_context);
9487 if (ndlp)
9488 remote_ID = ndlp->nlp_DID;
9489 }
9490 list_add_tail(&piocb->dlist, &abort_list);
9491 }
9492 if (phba->sli_rev == LPFC_SLI_REV4)
9493 spin_unlock(&pring->ring_lock);
9494 spin_unlock_irq(&phba->hbalock);
9495
9496 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
9497 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9498 "0127 ELS timeout Data: x%x x%x x%x "
9499 "x%x\n", els_command,
9500 remote_ID, ulp_command, iotag);
9501
9502 spin_lock_irq(&phba->hbalock);
9503 list_del_init(&piocb->dlist);
9504 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
9505 spin_unlock_irq(&phba->hbalock);
9506 }
9507
9508 /* Make sure HBA is alive */
9509 lpfc_issue_hb_tmo(phba);
9510
9511 if (!list_empty(&pring->txcmplq))
9512 if (!test_bit(FC_UNLOADING, &phba->pport->load_flag))
9513 mod_timer(&vport->els_tmofunc,
9514 jiffies + msecs_to_jiffies(1000 * timeout));
9515 }
9516
9517 /**
9518 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
9519 * @vport: pointer to a host virtual N_Port data structure.
9520 *
9521 * This routine is used to clean up all the outstanding ELS commands on a
9522 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
9523 * routine. After that, it walks the ELS transmit queue to remove all the
9524 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
9525 * the IOCBs with a non-NULL completion callback function, the callback
9526 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
9527 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
9528 * callback function, the IOCB will simply be released. Finally, it walks
9529 * the ELS transmit completion queue to issue an abort IOCB to any transmit
9530 * completion queue IOCB that is associated with the @vport and is not
9531 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
9532 * part of the discovery state machine) out to HBA by invoking the
9533 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
9534 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
9535 * the IOCBs are aborted when this function returns.
9536 **/
9537 void
lpfc_els_flush_cmd(struct lpfc_vport * vport)9538 lpfc_els_flush_cmd(struct lpfc_vport *vport)
9539 {
9540 LIST_HEAD(abort_list);
9541 LIST_HEAD(cancel_list);
9542 struct lpfc_hba *phba = vport->phba;
9543 struct lpfc_sli_ring *pring;
9544 struct lpfc_iocbq *tmp_iocb, *piocb;
9545 u32 ulp_command;
9546 unsigned long iflags = 0;
9547 bool mbx_tmo_err;
9548
9549 lpfc_fabric_abort_vport(vport);
9550
9551 /*
9552 * For SLI3, only the hbalock is required. But SLI4 needs to coordinate
9553 * with the ring insert operation. Because lpfc_sli_issue_abort_iotag
9554 * ultimately grabs the ring_lock, the driver must splice the list into
9555 * a working list and release the locks before calling the abort.
9556 */
9557 spin_lock_irqsave(&phba->hbalock, iflags);
9558 pring = lpfc_phba_elsring(phba);
9559
9560 /* Bail out if we've no ELS wq, like in PCI error recovery case. */
9561 if (unlikely(!pring)) {
9562 spin_unlock_irqrestore(&phba->hbalock, iflags);
9563 return;
9564 }
9565
9566 if (phba->sli_rev == LPFC_SLI_REV4)
9567 spin_lock(&pring->ring_lock);
9568
9569 mbx_tmo_err = test_bit(MBX_TMO_ERR, &phba->bit_flags);
9570 /* First we need to issue aborts to outstanding cmds on txcmpl */
9571 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
9572 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
9573 "2243 iotag = 0x%x cmd_flag = 0x%x "
9574 "ulp_command = 0x%x this_vport %x "
9575 "sli_flag = 0x%x\n",
9576 piocb->iotag, piocb->cmd_flag,
9577 get_job_cmnd(phba, piocb),
9578 (piocb->vport == vport),
9579 phba->sli.sli_flag);
9580
9581 if (piocb->vport != vport)
9582 continue;
9583
9584 if ((phba->sli.sli_flag & LPFC_SLI_ACTIVE) && !mbx_tmo_err) {
9585 if (piocb->cmd_flag & LPFC_IO_LIBDFC)
9586 continue;
9587 if (piocb->cmd_flag & LPFC_DRIVER_ABORTED)
9588 continue;
9589 }
9590
9591 /* On the ELS ring we can have ELS_REQUESTs, ELS_RSPs,
9592 * or GEN_REQUESTs waiting for a CQE response.
9593 */
9594 ulp_command = get_job_cmnd(phba, piocb);
9595 if (ulp_command == CMD_ELS_REQUEST64_WQE ||
9596 ulp_command == CMD_XMIT_ELS_RSP64_WQE) {
9597 list_add_tail(&piocb->dlist, &abort_list);
9598
9599 /* If the link is down when flushing ELS commands
9600 * the firmware will not complete them till after
9601 * the link comes back up. This may confuse
9602 * discovery for the new link up, so we need to
9603 * change the compl routine to just clean up the iocb
9604 * and avoid any retry logic.
9605 */
9606 if (phba->link_state == LPFC_LINK_DOWN)
9607 piocb->cmd_cmpl = lpfc_cmpl_els_link_down;
9608 } else if (ulp_command == CMD_GEN_REQUEST64_CR ||
9609 mbx_tmo_err)
9610 list_add_tail(&piocb->dlist, &abort_list);
9611 }
9612
9613 if (phba->sli_rev == LPFC_SLI_REV4)
9614 spin_unlock(&pring->ring_lock);
9615 spin_unlock_irqrestore(&phba->hbalock, iflags);
9616
9617 /* Abort each txcmpl iocb on aborted list and remove the dlist links. */
9618 list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
9619 spin_lock_irqsave(&phba->hbalock, iflags);
9620 list_del_init(&piocb->dlist);
9621 if (mbx_tmo_err || !(phba->sli.sli_flag & LPFC_SLI_ACTIVE))
9622 list_move_tail(&piocb->list, &cancel_list);
9623 else
9624 lpfc_sli_issue_abort_iotag(phba, pring, piocb, NULL);
9625
9626 spin_unlock_irqrestore(&phba->hbalock, iflags);
9627 }
9628 if (!list_empty(&cancel_list))
9629 lpfc_sli_cancel_iocbs(phba, &cancel_list, IOSTAT_LOCAL_REJECT,
9630 IOERR_SLI_ABORTED);
9631 else
9632 /* Make sure HBA is alive */
9633 lpfc_issue_hb_tmo(phba);
9634
9635 if (!list_empty(&abort_list))
9636 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9637 "3387 abort list for txq not empty\n");
9638 INIT_LIST_HEAD(&abort_list);
9639
9640 spin_lock_irqsave(&phba->hbalock, iflags);
9641 if (phba->sli_rev == LPFC_SLI_REV4)
9642 spin_lock(&pring->ring_lock);
9643
9644 /* No need to abort the txq list,
9645 * just queue them up for lpfc_sli_cancel_iocbs
9646 */
9647 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
9648 ulp_command = get_job_cmnd(phba, piocb);
9649
9650 if (piocb->cmd_flag & LPFC_IO_LIBDFC)
9651 continue;
9652
9653 /* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
9654 if (ulp_command == CMD_QUE_RING_BUF_CN ||
9655 ulp_command == CMD_QUE_RING_BUF64_CN ||
9656 ulp_command == CMD_CLOSE_XRI_CN ||
9657 ulp_command == CMD_ABORT_XRI_CN ||
9658 ulp_command == CMD_ABORT_XRI_CX)
9659 continue;
9660
9661 if (piocb->vport != vport)
9662 continue;
9663
9664 list_del_init(&piocb->list);
9665 list_add_tail(&piocb->list, &abort_list);
9666 }
9667
9668 /* The same holds true for any FLOGI/FDISC on the fabric_iocb_list */
9669 if (vport == phba->pport) {
9670 list_for_each_entry_safe(piocb, tmp_iocb,
9671 &phba->fabric_iocb_list, list) {
9672 list_del_init(&piocb->list);
9673 list_add_tail(&piocb->list, &abort_list);
9674 }
9675 }
9676
9677 if (phba->sli_rev == LPFC_SLI_REV4)
9678 spin_unlock(&pring->ring_lock);
9679 spin_unlock_irqrestore(&phba->hbalock, iflags);
9680
9681 /* Cancel all the IOCBs from the completions list */
9682 lpfc_sli_cancel_iocbs(phba, &abort_list,
9683 IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
9684
9685 return;
9686 }
9687
9688 /**
9689 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
9690 * @phba: pointer to lpfc hba data structure.
9691 *
9692 * This routine is used to clean up all the outstanding ELS commands on a
9693 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
9694 * routine. After that, it walks the ELS transmit queue to remove all the
9695 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
9696 * the IOCBs with the completion callback function associated, the callback
9697 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
9698 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
9699 * callback function associated, the IOCB will simply be released. Finally,
9700 * it walks the ELS transmit completion queue to issue an abort IOCB to any
9701 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
9702 * management plane IOCBs that are not part of the discovery state machine)
9703 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
9704 **/
9705 void
lpfc_els_flush_all_cmd(struct lpfc_hba * phba)9706 lpfc_els_flush_all_cmd(struct lpfc_hba *phba)
9707 {
9708 struct lpfc_vport *vport;
9709
9710 spin_lock_irq(&phba->port_list_lock);
9711 list_for_each_entry(vport, &phba->port_list, listentry)
9712 lpfc_els_flush_cmd(vport);
9713 spin_unlock_irq(&phba->port_list_lock);
9714
9715 return;
9716 }
9717
9718 /**
9719 * lpfc_send_els_failure_event - Posts an ELS command failure event
9720 * @phba: Pointer to hba context object.
9721 * @cmdiocbp: Pointer to command iocb which reported error.
9722 * @rspiocbp: Pointer to response iocb which reported error.
9723 *
9724 * This function sends an event when there is an ELS command
9725 * failure.
9726 **/
9727 void
lpfc_send_els_failure_event(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocbp,struct lpfc_iocbq * rspiocbp)9728 lpfc_send_els_failure_event(struct lpfc_hba *phba,
9729 struct lpfc_iocbq *cmdiocbp,
9730 struct lpfc_iocbq *rspiocbp)
9731 {
9732 struct lpfc_vport *vport = cmdiocbp->vport;
9733 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9734 struct lpfc_lsrjt_event lsrjt_event;
9735 struct lpfc_fabric_event_header fabric_event;
9736 struct ls_rjt stat;
9737 struct lpfc_nodelist *ndlp;
9738 uint32_t *pcmd;
9739 u32 ulp_status, ulp_word4;
9740
9741 ndlp = cmdiocbp->ndlp;
9742 if (!ndlp)
9743 return;
9744
9745 ulp_status = get_job_ulpstatus(phba, rspiocbp);
9746 ulp_word4 = get_job_word4(phba, rspiocbp);
9747
9748 if (ulp_status == IOSTAT_LS_RJT) {
9749 lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
9750 lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
9751 memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
9752 sizeof(struct lpfc_name));
9753 memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
9754 sizeof(struct lpfc_name));
9755 pcmd = (uint32_t *)cmdiocbp->cmd_dmabuf->virt;
9756 lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
9757 stat.un.ls_rjt_error_be = cpu_to_be32(ulp_word4);
9758 lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
9759 lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
9760 fc_host_post_vendor_event(shost,
9761 fc_get_event_number(),
9762 sizeof(lsrjt_event),
9763 (char *)&lsrjt_event,
9764 LPFC_NL_VENDOR_ID);
9765 return;
9766 }
9767 if (ulp_status == IOSTAT_NPORT_BSY ||
9768 ulp_status == IOSTAT_FABRIC_BSY) {
9769 fabric_event.event_type = FC_REG_FABRIC_EVENT;
9770 if (ulp_status == IOSTAT_NPORT_BSY)
9771 fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
9772 else
9773 fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
9774 memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
9775 sizeof(struct lpfc_name));
9776 memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
9777 sizeof(struct lpfc_name));
9778 fc_host_post_vendor_event(shost,
9779 fc_get_event_number(),
9780 sizeof(fabric_event),
9781 (char *)&fabric_event,
9782 LPFC_NL_VENDOR_ID);
9783 return;
9784 }
9785
9786 }
9787
9788 /**
9789 * lpfc_send_els_event - Posts unsolicited els event
9790 * @vport: Pointer to vport object.
9791 * @ndlp: Pointer FC node object.
9792 * @payload: ELS command code type.
9793 *
9794 * This function posts an event when there is an incoming
9795 * unsolicited ELS command.
9796 **/
9797 static void
lpfc_send_els_event(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint32_t * payload)9798 lpfc_send_els_event(struct lpfc_vport *vport,
9799 struct lpfc_nodelist *ndlp,
9800 uint32_t *payload)
9801 {
9802 struct lpfc_els_event_header *els_data = NULL;
9803 struct lpfc_logo_event *logo_data = NULL;
9804 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
9805
9806 if (*payload == ELS_CMD_LOGO) {
9807 logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
9808 if (!logo_data) {
9809 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9810 "0148 Failed to allocate memory "
9811 "for LOGO event\n");
9812 return;
9813 }
9814 els_data = &logo_data->header;
9815 } else {
9816 els_data = kmalloc(sizeof(struct lpfc_els_event_header),
9817 GFP_KERNEL);
9818 if (!els_data) {
9819 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
9820 "0149 Failed to allocate memory "
9821 "for ELS event\n");
9822 return;
9823 }
9824 }
9825 els_data->event_type = FC_REG_ELS_EVENT;
9826 switch (*payload) {
9827 case ELS_CMD_PLOGI:
9828 els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
9829 break;
9830 case ELS_CMD_PRLO:
9831 els_data->subcategory = LPFC_EVENT_PRLO_RCV;
9832 break;
9833 case ELS_CMD_ADISC:
9834 els_data->subcategory = LPFC_EVENT_ADISC_RCV;
9835 break;
9836 case ELS_CMD_LOGO:
9837 els_data->subcategory = LPFC_EVENT_LOGO_RCV;
9838 /* Copy the WWPN in the LOGO payload */
9839 memcpy(logo_data->logo_wwpn, &payload[2],
9840 sizeof(struct lpfc_name));
9841 break;
9842 default:
9843 kfree(els_data);
9844 return;
9845 }
9846 memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
9847 memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
9848 if (*payload == ELS_CMD_LOGO) {
9849 fc_host_post_vendor_event(shost,
9850 fc_get_event_number(),
9851 sizeof(struct lpfc_logo_event),
9852 (char *)logo_data,
9853 LPFC_NL_VENDOR_ID);
9854 kfree(logo_data);
9855 } else {
9856 fc_host_post_vendor_event(shost,
9857 fc_get_event_number(),
9858 sizeof(struct lpfc_els_event_header),
9859 (char *)els_data,
9860 LPFC_NL_VENDOR_ID);
9861 kfree(els_data);
9862 }
9863
9864 return;
9865 }
9866
9867
9868 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_li_event_nm, fc_fpin_li_event_types,
9869 FC_FPIN_LI_EVT_TYPES_INIT);
9870
9871 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_deli_event_nm, fc_fpin_deli_event_types,
9872 FC_FPIN_DELI_EVT_TYPES_INIT);
9873
9874 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_event_nm, fc_fpin_congn_event_types,
9875 FC_FPIN_CONGN_EVT_TYPES_INIT);
9876
9877 DECLARE_ENUM2STR_LOOKUP(lpfc_get_fpin_congn_severity_nm,
9878 fc_fpin_congn_severity_types,
9879 FC_FPIN_CONGN_SEVERITY_INIT);
9880
9881
9882 /**
9883 * lpfc_display_fpin_wwpn - Display WWPNs accessible by the attached port
9884 * @phba: Pointer to phba object.
9885 * @wwnlist: Pointer to list of WWPNs in FPIN payload
9886 * @cnt: count of WWPNs in FPIN payload
9887 *
9888 * This routine is called by LI and PC descriptors.
9889 * Limit the number of WWPNs displayed to 6 log messages, 6 per log message
9890 */
9891 static void
lpfc_display_fpin_wwpn(struct lpfc_hba * phba,__be64 * wwnlist,u32 cnt)9892 lpfc_display_fpin_wwpn(struct lpfc_hba *phba, __be64 *wwnlist, u32 cnt)
9893 {
9894 char buf[LPFC_FPIN_WWPN_LINE_SZ];
9895 __be64 wwn;
9896 u64 wwpn;
9897 int i, len;
9898 int line = 0;
9899 int wcnt = 0;
9900 bool endit = false;
9901
9902 len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ, "Accessible WWPNs:");
9903 for (i = 0; i < cnt; i++) {
9904 /* Are we on the last WWPN */
9905 if (i == (cnt - 1))
9906 endit = true;
9907
9908 /* Extract the next WWPN from the payload */
9909 wwn = *wwnlist++;
9910 wwpn = be64_to_cpu(wwn);
9911 len += scnprintf(buf + len, LPFC_FPIN_WWPN_LINE_SZ - len,
9912 " %016llx", wwpn);
9913
9914 /* Log a message if we are on the last WWPN
9915 * or if we hit the max allowed per message.
9916 */
9917 wcnt++;
9918 if (wcnt == LPFC_FPIN_WWPN_LINE_CNT || endit) {
9919 buf[len] = 0;
9920 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9921 "4686 %s\n", buf);
9922
9923 /* Check if we reached the last WWPN */
9924 if (endit)
9925 return;
9926
9927 /* Limit the number of log message displayed per FPIN */
9928 line++;
9929 if (line == LPFC_FPIN_WWPN_NUM_LINE) {
9930 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9931 "4687 %d WWPNs Truncated\n",
9932 cnt - i - 1);
9933 return;
9934 }
9935
9936 /* Start over with next log message */
9937 wcnt = 0;
9938 len = scnprintf(buf, LPFC_FPIN_WWPN_LINE_SZ,
9939 "Additional WWPNs:");
9940 }
9941 }
9942 }
9943
9944 /**
9945 * lpfc_els_rcv_fpin_li - Process an FPIN Link Integrity Event.
9946 * @phba: Pointer to phba object.
9947 * @tlv: Pointer to the Link Integrity Notification Descriptor.
9948 *
9949 * This function processes a Link Integrity FPIN event by logging a message.
9950 **/
9951 static void
lpfc_els_rcv_fpin_li(struct lpfc_hba * phba,struct fc_tlv_desc * tlv)9952 lpfc_els_rcv_fpin_li(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
9953 {
9954 struct fc_fn_li_desc *li = (struct fc_fn_li_desc *)tlv;
9955 const char *li_evt_str;
9956 u32 li_evt, cnt;
9957
9958 li_evt = be16_to_cpu(li->event_type);
9959 li_evt_str = lpfc_get_fpin_li_event_nm(li_evt);
9960 cnt = be32_to_cpu(li->pname_count);
9961
9962 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9963 "4680 FPIN Link Integrity %s (x%x) "
9964 "Detecting PN x%016llx Attached PN x%016llx "
9965 "Duration %d mSecs Count %d Port Cnt %d\n",
9966 li_evt_str, li_evt,
9967 be64_to_cpu(li->detecting_wwpn),
9968 be64_to_cpu(li->attached_wwpn),
9969 be32_to_cpu(li->event_threshold),
9970 be32_to_cpu(li->event_count), cnt);
9971
9972 lpfc_display_fpin_wwpn(phba, (__be64 *)&li->pname_list, cnt);
9973 }
9974
9975 /**
9976 * lpfc_els_rcv_fpin_del - Process an FPIN Delivery Event.
9977 * @phba: Pointer to hba object.
9978 * @tlv: Pointer to the Delivery Notification Descriptor TLV
9979 *
9980 * This function processes a Delivery FPIN event by logging a message.
9981 **/
9982 static void
lpfc_els_rcv_fpin_del(struct lpfc_hba * phba,struct fc_tlv_desc * tlv)9983 lpfc_els_rcv_fpin_del(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
9984 {
9985 struct fc_fn_deli_desc *del = (struct fc_fn_deli_desc *)tlv;
9986 const char *del_rsn_str;
9987 u32 del_rsn;
9988 __be32 *frame;
9989
9990 del_rsn = be16_to_cpu(del->deli_reason_code);
9991 del_rsn_str = lpfc_get_fpin_deli_event_nm(del_rsn);
9992
9993 /* Skip over desc_tag/desc_len header to payload */
9994 frame = (__be32 *)(del + 1);
9995
9996 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
9997 "4681 FPIN Delivery %s (x%x) "
9998 "Detecting PN x%016llx Attached PN x%016llx "
9999 "DiscHdr0 x%08x "
10000 "DiscHdr1 x%08x DiscHdr2 x%08x DiscHdr3 x%08x "
10001 "DiscHdr4 x%08x DiscHdr5 x%08x\n",
10002 del_rsn_str, del_rsn,
10003 be64_to_cpu(del->detecting_wwpn),
10004 be64_to_cpu(del->attached_wwpn),
10005 be32_to_cpu(frame[0]),
10006 be32_to_cpu(frame[1]),
10007 be32_to_cpu(frame[2]),
10008 be32_to_cpu(frame[3]),
10009 be32_to_cpu(frame[4]),
10010 be32_to_cpu(frame[5]));
10011 }
10012
10013 /**
10014 * lpfc_els_rcv_fpin_peer_cgn - Process a FPIN Peer Congestion Event.
10015 * @phba: Pointer to hba object.
10016 * @tlv: Pointer to the Peer Congestion Notification Descriptor TLV
10017 *
10018 * This function processes a Peer Congestion FPIN event by logging a message.
10019 **/
10020 static void
lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba * phba,struct fc_tlv_desc * tlv)10021 lpfc_els_rcv_fpin_peer_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
10022 {
10023 struct fc_fn_peer_congn_desc *pc = (struct fc_fn_peer_congn_desc *)tlv;
10024 const char *pc_evt_str;
10025 u32 pc_evt, cnt;
10026
10027 pc_evt = be16_to_cpu(pc->event_type);
10028 pc_evt_str = lpfc_get_fpin_congn_event_nm(pc_evt);
10029 cnt = be32_to_cpu(pc->pname_count);
10030
10031 /* Capture FPIN frequency */
10032 phba->cgn_fpin_frequency = be32_to_cpu(pc->event_period);
10033
10034 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_ELS,
10035 "4684 FPIN Peer Congestion %s (x%x) "
10036 "Duration %d mSecs "
10037 "Detecting PN x%016llx Attached PN x%016llx "
10038 "Impacted Port Cnt %d\n",
10039 pc_evt_str, pc_evt,
10040 be32_to_cpu(pc->event_period),
10041 be64_to_cpu(pc->detecting_wwpn),
10042 be64_to_cpu(pc->attached_wwpn),
10043 cnt);
10044
10045 lpfc_display_fpin_wwpn(phba, (__be64 *)&pc->pname_list, cnt);
10046 }
10047
10048 /**
10049 * lpfc_els_rcv_fpin_cgn - Process an FPIN Congestion notification
10050 * @phba: Pointer to hba object.
10051 * @tlv: Pointer to the Congestion Notification Descriptor TLV
10052 *
10053 * This function processes an FPIN Congestion Notifiction. The notification
10054 * could be an Alarm or Warning. This routine feeds that data into driver's
10055 * running congestion algorithm. It also processes the FPIN by
10056 * logging a message. It returns 1 to indicate deliver this message
10057 * to the upper layer or 0 to indicate don't deliver it.
10058 **/
10059 static int
lpfc_els_rcv_fpin_cgn(struct lpfc_hba * phba,struct fc_tlv_desc * tlv)10060 lpfc_els_rcv_fpin_cgn(struct lpfc_hba *phba, struct fc_tlv_desc *tlv)
10061 {
10062 struct lpfc_cgn_info *cp;
10063 struct fc_fn_congn_desc *cgn = (struct fc_fn_congn_desc *)tlv;
10064 const char *cgn_evt_str;
10065 u32 cgn_evt;
10066 const char *cgn_sev_str;
10067 u32 cgn_sev;
10068 uint16_t value;
10069 u32 crc;
10070 bool nm_log = false;
10071 int rc = 1;
10072
10073 cgn_evt = be16_to_cpu(cgn->event_type);
10074 cgn_evt_str = lpfc_get_fpin_congn_event_nm(cgn_evt);
10075 cgn_sev = cgn->severity;
10076 cgn_sev_str = lpfc_get_fpin_congn_severity_nm(cgn_sev);
10077
10078 /* The driver only takes action on a Credit Stall or Oversubscription
10079 * event type to engage the IO algorithm. The driver prints an
10080 * unmaskable message only for Lost Credit and Credit Stall.
10081 * TODO: Still need to have definition of host action on clear,
10082 * lost credit and device specific event types.
10083 */
10084 switch (cgn_evt) {
10085 case FPIN_CONGN_LOST_CREDIT:
10086 nm_log = true;
10087 break;
10088 case FPIN_CONGN_CREDIT_STALL:
10089 nm_log = true;
10090 fallthrough;
10091 case FPIN_CONGN_OVERSUBSCRIPTION:
10092 if (cgn_evt == FPIN_CONGN_OVERSUBSCRIPTION)
10093 nm_log = false;
10094 switch (cgn_sev) {
10095 case FPIN_CONGN_SEVERITY_ERROR:
10096 /* Take action here for an Alarm event */
10097 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
10098 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) {
10099 /* Track of alarm cnt for SYNC_WQE */
10100 atomic_inc(&phba->cgn_sync_alarm_cnt);
10101 }
10102 /* Track alarm cnt for cgn_info regardless
10103 * of whether CMF is configured for Signals
10104 * or FPINs.
10105 */
10106 atomic_inc(&phba->cgn_fabric_alarm_cnt);
10107 goto cleanup;
10108 }
10109 break;
10110 case FPIN_CONGN_SEVERITY_WARNING:
10111 /* Take action here for a Warning event */
10112 if (phba->cmf_active_mode != LPFC_CFG_OFF) {
10113 if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) {
10114 /* Track of warning cnt for SYNC_WQE */
10115 atomic_inc(&phba->cgn_sync_warn_cnt);
10116 }
10117 /* Track warning cnt and freq for cgn_info
10118 * regardless of whether CMF is configured for
10119 * Signals or FPINs.
10120 */
10121 atomic_inc(&phba->cgn_fabric_warn_cnt);
10122 cleanup:
10123 /* Save frequency in ms */
10124 phba->cgn_fpin_frequency =
10125 be32_to_cpu(cgn->event_period);
10126 value = phba->cgn_fpin_frequency;
10127 if (phba->cgn_i) {
10128 cp = (struct lpfc_cgn_info *)
10129 phba->cgn_i->virt;
10130 cp->cgn_alarm_freq =
10131 cpu_to_le16(value);
10132 cp->cgn_warn_freq =
10133 cpu_to_le16(value);
10134 crc = lpfc_cgn_calc_crc32
10135 (cp,
10136 LPFC_CGN_INFO_SZ,
10137 LPFC_CGN_CRC32_SEED);
10138 cp->cgn_info_crc = cpu_to_le32(crc);
10139 }
10140
10141 /* Don't deliver to upper layer since
10142 * driver took action on this tlv.
10143 */
10144 rc = 0;
10145 }
10146 break;
10147 }
10148 break;
10149 }
10150
10151 /* Change the log level to unmaskable for the following event types. */
10152 lpfc_printf_log(phba, (nm_log ? KERN_WARNING : KERN_INFO),
10153 LOG_CGN_MGMT | LOG_ELS,
10154 "4683 FPIN CONGESTION %s type %s (x%x) Event "
10155 "Duration %d mSecs\n",
10156 cgn_sev_str, cgn_evt_str, cgn_evt,
10157 be32_to_cpu(cgn->event_period));
10158 return rc;
10159 }
10160
10161 void
lpfc_els_rcv_fpin(struct lpfc_vport * vport,void * p,u32 fpin_length)10162 lpfc_els_rcv_fpin(struct lpfc_vport *vport, void *p, u32 fpin_length)
10163 {
10164 struct lpfc_hba *phba = vport->phba;
10165 struct fc_els_fpin *fpin = (struct fc_els_fpin *)p;
10166 struct fc_tlv_desc *tlv, *first_tlv, *current_tlv;
10167 const char *dtag_nm;
10168 int desc_cnt = 0, bytes_remain, cnt;
10169 u32 dtag, deliver = 0;
10170 int len;
10171
10172 /* FPINs handled only if we are in the right discovery state */
10173 if (vport->port_state < LPFC_DISC_AUTH)
10174 return;
10175
10176 /* make sure there is the full fpin header */
10177 if (fpin_length < sizeof(struct fc_els_fpin))
10178 return;
10179
10180 /* Sanity check descriptor length. The desc_len value does not
10181 * include space for the ELS command and the desc_len fields.
10182 */
10183 len = be32_to_cpu(fpin->desc_len);
10184 if (fpin_length < len + sizeof(struct fc_els_fpin)) {
10185 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10186 "4671 Bad ELS FPIN length %d: %d\n",
10187 len, fpin_length);
10188 return;
10189 }
10190
10191 tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0];
10192 first_tlv = tlv;
10193 bytes_remain = fpin_length - offsetof(struct fc_els_fpin, fpin_desc);
10194 bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len));
10195
10196 /* process each descriptor separately */
10197 while (bytes_remain >= FC_TLV_DESC_HDR_SZ &&
10198 bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) {
10199 dtag = be32_to_cpu(tlv->desc_tag);
10200 switch (dtag) {
10201 case ELS_DTAG_LNK_INTEGRITY:
10202 lpfc_els_rcv_fpin_li(phba, tlv);
10203 deliver = 1;
10204 break;
10205 case ELS_DTAG_DELIVERY:
10206 lpfc_els_rcv_fpin_del(phba, tlv);
10207 deliver = 1;
10208 break;
10209 case ELS_DTAG_PEER_CONGEST:
10210 lpfc_els_rcv_fpin_peer_cgn(phba, tlv);
10211 deliver = 1;
10212 break;
10213 case ELS_DTAG_CONGESTION:
10214 deliver = lpfc_els_rcv_fpin_cgn(phba, tlv);
10215 break;
10216 default:
10217 dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
10218 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10219 "4678 unknown FPIN descriptor[%d]: "
10220 "tag x%x (%s)\n",
10221 desc_cnt, dtag, dtag_nm);
10222
10223 /* If descriptor is bad, drop the rest of the data */
10224 return;
10225 }
10226 lpfc_cgn_update_stat(phba, dtag);
10227 cnt = be32_to_cpu(tlv->desc_len);
10228
10229 /* Sanity check descriptor length. The desc_len value does not
10230 * include space for the desc_tag and the desc_len fields.
10231 */
10232 len -= (cnt + sizeof(struct fc_tlv_desc));
10233 if (len < 0) {
10234 dtag_nm = lpfc_get_tlv_dtag_nm(dtag);
10235 lpfc_printf_log(phba, KERN_WARNING, LOG_CGN_MGMT,
10236 "4672 Bad FPIN descriptor TLV length "
10237 "%d: %d %d %s\n",
10238 cnt, len, fpin_length, dtag_nm);
10239 return;
10240 }
10241
10242 current_tlv = tlv;
10243 bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv);
10244 tlv = fc_tlv_next_desc(tlv);
10245
10246 /* Format payload such that the FPIN delivered to the
10247 * upper layer is a single descriptor FPIN.
10248 */
10249 if (desc_cnt)
10250 memcpy(first_tlv, current_tlv,
10251 (cnt + sizeof(struct fc_els_fpin)));
10252
10253 /* Adjust the length so that it only reflects a
10254 * single descriptor FPIN.
10255 */
10256 fpin_length = cnt + sizeof(struct fc_els_fpin);
10257 fpin->desc_len = cpu_to_be32(fpin_length);
10258 fpin_length += sizeof(struct fc_els_fpin); /* the entire FPIN */
10259
10260 /* Send every descriptor individually to the upper layer */
10261 if (deliver)
10262 fc_host_fpin_rcv(lpfc_shost_from_vport(vport),
10263 fpin_length, (char *)fpin, 0);
10264 desc_cnt++;
10265 }
10266 }
10267
10268 /**
10269 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
10270 * @phba: pointer to lpfc hba data structure.
10271 * @pring: pointer to a SLI ring.
10272 * @vport: pointer to a host virtual N_Port data structure.
10273 * @elsiocb: pointer to lpfc els command iocb data structure.
10274 *
10275 * This routine is used for processing the IOCB associated with a unsolicited
10276 * event. It first determines whether there is an existing ndlp that matches
10277 * the DID from the unsolicited IOCB. If not, it will create a new one with
10278 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
10279 * IOCB is then used to invoke the proper routine and to set up proper state
10280 * of the discovery state machine.
10281 **/
10282 static void
lpfc_els_unsol_buffer(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,struct lpfc_vport * vport,struct lpfc_iocbq * elsiocb)10283 lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10284 struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
10285 {
10286 struct lpfc_nodelist *ndlp;
10287 struct ls_rjt stat;
10288 u32 *payload, payload_len;
10289 u32 cmd = 0, did = 0, newnode, status = 0;
10290 uint8_t rjt_exp, rjt_err = 0, init_link = 0;
10291 struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
10292 LPFC_MBOXQ_t *mbox;
10293
10294 if (!vport || !elsiocb->cmd_dmabuf)
10295 goto dropit;
10296
10297 newnode = 0;
10298 wcqe_cmpl = &elsiocb->wcqe_cmpl;
10299 payload = elsiocb->cmd_dmabuf->virt;
10300 if (phba->sli_rev == LPFC_SLI_REV4)
10301 payload_len = wcqe_cmpl->total_data_placed;
10302 else
10303 payload_len = elsiocb->iocb.unsli3.rcvsli3.acc_len;
10304 status = get_job_ulpstatus(phba, elsiocb);
10305 cmd = *payload;
10306 if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
10307 lpfc_sli3_post_buffer(phba, pring, 1);
10308
10309 did = get_job_els_rsp64_did(phba, elsiocb);
10310 if (status) {
10311 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10312 "RCV Unsol ELS: status:x%x/x%x did:x%x",
10313 status, get_job_word4(phba, elsiocb), did);
10314 goto dropit;
10315 }
10316
10317 /* Check to see if link went down during discovery */
10318 if (lpfc_els_chk_latt(vport))
10319 goto dropit;
10320
10321 /* Ignore traffic received during vport shutdown. */
10322 if (test_bit(FC_UNLOADING, &vport->load_flag))
10323 goto dropit;
10324
10325 /* If NPort discovery is delayed drop incoming ELS */
10326 if (test_bit(FC_DISC_DELAYED, &vport->fc_flag) &&
10327 cmd != ELS_CMD_PLOGI)
10328 goto dropit;
10329
10330 ndlp = lpfc_findnode_did(vport, did);
10331 if (!ndlp) {
10332 /* Cannot find existing Fabric ndlp, so allocate a new one */
10333 ndlp = lpfc_nlp_init(vport, did);
10334 if (!ndlp)
10335 goto dropit;
10336 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
10337 newnode = 1;
10338 if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
10339 ndlp->nlp_type |= NLP_FABRIC;
10340 } else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
10341 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
10342 newnode = 1;
10343 }
10344
10345 phba->fc_stat.elsRcvFrame++;
10346
10347 /*
10348 * Do not process any unsolicited ELS commands
10349 * if the ndlp is in DEV_LOSS
10350 */
10351 if (test_bit(NLP_IN_DEV_LOSS, &ndlp->nlp_flag)) {
10352 if (newnode)
10353 lpfc_nlp_put(ndlp);
10354 goto dropit;
10355 }
10356
10357 elsiocb->ndlp = lpfc_nlp_get(ndlp);
10358 if (!elsiocb->ndlp)
10359 goto dropit;
10360 elsiocb->vport = vport;
10361
10362 if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
10363 cmd &= ELS_CMD_MASK;
10364 }
10365 /* ELS command <elsCmd> received from NPORT <did> */
10366 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
10367 "0112 ELS command x%x received from NPORT x%x "
10368 "refcnt %d Data: x%x x%lx x%x x%x\n",
10369 cmd, did, kref_read(&ndlp->kref), vport->port_state,
10370 vport->fc_flag, vport->fc_myDID, vport->fc_prevDID);
10371
10372 /* reject till our FLOGI completes or PLOGI assigned DID via PT2PT */
10373 if ((vport->port_state < LPFC_FABRIC_CFG_LINK) &&
10374 (cmd != ELS_CMD_FLOGI) &&
10375 !((cmd == ELS_CMD_PLOGI) && test_bit(FC_PT2PT, &vport->fc_flag))) {
10376 rjt_err = LSRJT_LOGICAL_BSY;
10377 rjt_exp = LSEXP_NOTHING_MORE;
10378 goto lsrjt;
10379 }
10380
10381 switch (cmd) {
10382 case ELS_CMD_PLOGI:
10383 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10384 "RCV PLOGI: did:x%x/ste:x%x flg:x%lx",
10385 did, vport->port_state, ndlp->nlp_flag);
10386
10387 phba->fc_stat.elsRcvPLOGI++;
10388 ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);
10389 if (phba->sli_rev == LPFC_SLI_REV4 &&
10390 test_bit(FC_PT2PT, &phba->pport->fc_flag)) {
10391 vport->fc_prevDID = vport->fc_myDID;
10392 /* Our DID needs to be updated before registering
10393 * the vfi. This is done in lpfc_rcv_plogi but
10394 * that is called after the reg_vfi.
10395 */
10396 vport->fc_myDID =
10397 bf_get(els_rsp64_sid,
10398 &elsiocb->wqe.xmit_els_rsp);
10399 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
10400 "3312 Remote port assigned DID x%x "
10401 "%x\n", vport->fc_myDID,
10402 vport->fc_prevDID);
10403 }
10404
10405 lpfc_send_els_event(vport, ndlp, payload);
10406
10407 /* If Nport discovery is delayed, reject PLOGIs */
10408 if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
10409 rjt_err = LSRJT_UNABLE_TPC;
10410 rjt_exp = LSEXP_NOTHING_MORE;
10411 break;
10412 }
10413
10414 if (vport->port_state < LPFC_DISC_AUTH) {
10415 if (!test_bit(FC_PT2PT, &phba->pport->fc_flag) ||
10416 test_bit(FC_PT2PT_PLOGI, &phba->pport->fc_flag)) {
10417 rjt_err = LSRJT_UNABLE_TPC;
10418 rjt_exp = LSEXP_NOTHING_MORE;
10419 break;
10420 }
10421 }
10422
10423 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10424 NLP_EVT_RCV_PLOGI);
10425
10426 break;
10427 case ELS_CMD_FLOGI:
10428 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10429 "RCV FLOGI: did:x%x/ste:x%x flg:x%lx",
10430 did, vport->port_state, ndlp->nlp_flag);
10431
10432 phba->fc_stat.elsRcvFLOGI++;
10433
10434 /* If the driver believes fabric discovery is done and is ready,
10435 * bounce the link. There is some descrepancy.
10436 */
10437 if (vport->port_state >= LPFC_LOCAL_CFG_LINK &&
10438 test_bit(FC_PT2PT, &vport->fc_flag) &&
10439 vport->rcv_flogi_cnt >= 1) {
10440 rjt_err = LSRJT_LOGICAL_BSY;
10441 rjt_exp = LSEXP_NOTHING_MORE;
10442 init_link++;
10443 goto lsrjt;
10444 }
10445
10446 lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
10447 /* retain node if our response is deferred */
10448 if (phba->defer_flogi_acc.flag)
10449 break;
10450 if (newnode)
10451 lpfc_disc_state_machine(vport, ndlp, NULL,
10452 NLP_EVT_DEVICE_RM);
10453 break;
10454 case ELS_CMD_LOGO:
10455 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10456 "RCV LOGO: did:x%x/ste:x%x flg:x%lx",
10457 did, vport->port_state, ndlp->nlp_flag);
10458
10459 phba->fc_stat.elsRcvLOGO++;
10460 lpfc_send_els_event(vport, ndlp, payload);
10461 if (vport->port_state < LPFC_DISC_AUTH) {
10462 rjt_err = LSRJT_UNABLE_TPC;
10463 rjt_exp = LSEXP_NOTHING_MORE;
10464 break;
10465 }
10466 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
10467 if (newnode)
10468 lpfc_disc_state_machine(vport, ndlp, NULL,
10469 NLP_EVT_DEVICE_RM);
10470 break;
10471 case ELS_CMD_PRLO:
10472 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10473 "RCV PRLO: did:x%x/ste:x%x flg:x%lx",
10474 did, vport->port_state, ndlp->nlp_flag);
10475
10476 phba->fc_stat.elsRcvPRLO++;
10477 lpfc_send_els_event(vport, ndlp, payload);
10478 if (vport->port_state < LPFC_DISC_AUTH) {
10479 rjt_err = LSRJT_UNABLE_TPC;
10480 rjt_exp = LSEXP_NOTHING_MORE;
10481 break;
10482 }
10483 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
10484 break;
10485 case ELS_CMD_LCB:
10486 phba->fc_stat.elsRcvLCB++;
10487 lpfc_els_rcv_lcb(vport, elsiocb, ndlp);
10488 break;
10489 case ELS_CMD_RDP:
10490 phba->fc_stat.elsRcvRDP++;
10491 lpfc_els_rcv_rdp(vport, elsiocb, ndlp);
10492 break;
10493 case ELS_CMD_RSCN:
10494 phba->fc_stat.elsRcvRSCN++;
10495 lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
10496 if (newnode)
10497 lpfc_disc_state_machine(vport, ndlp, NULL,
10498 NLP_EVT_DEVICE_RM);
10499 break;
10500 case ELS_CMD_ADISC:
10501 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10502 "RCV ADISC: did:x%x/ste:x%x flg:x%lx",
10503 did, vport->port_state, ndlp->nlp_flag);
10504
10505 lpfc_send_els_event(vport, ndlp, payload);
10506 phba->fc_stat.elsRcvADISC++;
10507 if (vport->port_state < LPFC_DISC_AUTH) {
10508 rjt_err = LSRJT_UNABLE_TPC;
10509 rjt_exp = LSEXP_NOTHING_MORE;
10510 break;
10511 }
10512 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10513 NLP_EVT_RCV_ADISC);
10514 break;
10515 case ELS_CMD_PDISC:
10516 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10517 "RCV PDISC: did:x%x/ste:x%x flg:x%lx",
10518 did, vport->port_state, ndlp->nlp_flag);
10519
10520 phba->fc_stat.elsRcvPDISC++;
10521 if (vport->port_state < LPFC_DISC_AUTH) {
10522 rjt_err = LSRJT_UNABLE_TPC;
10523 rjt_exp = LSEXP_NOTHING_MORE;
10524 break;
10525 }
10526 lpfc_disc_state_machine(vport, ndlp, elsiocb,
10527 NLP_EVT_RCV_PDISC);
10528 break;
10529 case ELS_CMD_FARPR:
10530 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10531 "RCV FARPR: did:x%x/ste:x%x flg:x%lx",
10532 did, vport->port_state, ndlp->nlp_flag);
10533
10534 phba->fc_stat.elsRcvFARPR++;
10535 lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
10536 break;
10537 case ELS_CMD_FARP:
10538 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10539 "RCV FARP: did:x%x/ste:x%x flg:x%lx",
10540 did, vport->port_state, ndlp->nlp_flag);
10541
10542 phba->fc_stat.elsRcvFARP++;
10543 lpfc_els_rcv_farp(vport, elsiocb, ndlp);
10544 break;
10545 case ELS_CMD_FAN:
10546 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10547 "RCV FAN: did:x%x/ste:x%x flg:x%lx",
10548 did, vport->port_state, ndlp->nlp_flag);
10549
10550 phba->fc_stat.elsRcvFAN++;
10551 lpfc_els_rcv_fan(vport, elsiocb, ndlp);
10552 break;
10553 case ELS_CMD_PRLI:
10554 case ELS_CMD_NVMEPRLI:
10555 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10556 "RCV PRLI: did:x%x/ste:x%x flg:x%lx",
10557 did, vport->port_state, ndlp->nlp_flag);
10558
10559 phba->fc_stat.elsRcvPRLI++;
10560 if ((vport->port_state < LPFC_DISC_AUTH) &&
10561 test_bit(FC_FABRIC, &vport->fc_flag)) {
10562 rjt_err = LSRJT_UNABLE_TPC;
10563 rjt_exp = LSEXP_NOTHING_MORE;
10564 break;
10565 }
10566 lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
10567 break;
10568 case ELS_CMD_LIRR:
10569 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10570 "RCV LIRR: did:x%x/ste:x%x flg:x%lx",
10571 did, vport->port_state, ndlp->nlp_flag);
10572
10573 phba->fc_stat.elsRcvLIRR++;
10574 lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
10575 if (newnode)
10576 lpfc_disc_state_machine(vport, ndlp, NULL,
10577 NLP_EVT_DEVICE_RM);
10578 break;
10579 case ELS_CMD_RLS:
10580 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10581 "RCV RLS: did:x%x/ste:x%x flg:x%lx",
10582 did, vport->port_state, ndlp->nlp_flag);
10583
10584 phba->fc_stat.elsRcvRLS++;
10585 lpfc_els_rcv_rls(vport, elsiocb, ndlp);
10586 if (newnode)
10587 lpfc_disc_state_machine(vport, ndlp, NULL,
10588 NLP_EVT_DEVICE_RM);
10589 break;
10590 case ELS_CMD_RPL:
10591 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10592 "RCV RPL: did:x%x/ste:x%x flg:x%lx",
10593 did, vport->port_state, ndlp->nlp_flag);
10594
10595 phba->fc_stat.elsRcvRPL++;
10596 lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
10597 if (newnode)
10598 lpfc_disc_state_machine(vport, ndlp, NULL,
10599 NLP_EVT_DEVICE_RM);
10600 break;
10601 case ELS_CMD_RNID:
10602 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10603 "RCV RNID: did:x%x/ste:x%x flg:x%lx",
10604 did, vport->port_state, ndlp->nlp_flag);
10605
10606 phba->fc_stat.elsRcvRNID++;
10607 lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
10608 if (newnode)
10609 lpfc_disc_state_machine(vport, ndlp, NULL,
10610 NLP_EVT_DEVICE_RM);
10611 break;
10612 case ELS_CMD_RTV:
10613 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10614 "RCV RTV: did:x%x/ste:x%x flg:x%lx",
10615 did, vport->port_state, ndlp->nlp_flag);
10616 phba->fc_stat.elsRcvRTV++;
10617 lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
10618 if (newnode)
10619 lpfc_disc_state_machine(vport, ndlp, NULL,
10620 NLP_EVT_DEVICE_RM);
10621 break;
10622 case ELS_CMD_RRQ:
10623 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10624 "RCV RRQ: did:x%x/ste:x%x flg:x%lx",
10625 did, vport->port_state, ndlp->nlp_flag);
10626
10627 phba->fc_stat.elsRcvRRQ++;
10628 lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
10629 if (newnode)
10630 lpfc_disc_state_machine(vport, ndlp, NULL,
10631 NLP_EVT_DEVICE_RM);
10632 break;
10633 case ELS_CMD_ECHO:
10634 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10635 "RCV ECHO: did:x%x/ste:x%x flg:x%lx",
10636 did, vport->port_state, ndlp->nlp_flag);
10637
10638 phba->fc_stat.elsRcvECHO++;
10639 lpfc_els_rcv_echo(vport, elsiocb, ndlp);
10640 if (newnode)
10641 lpfc_disc_state_machine(vport, ndlp, NULL,
10642 NLP_EVT_DEVICE_RM);
10643 break;
10644 case ELS_CMD_REC:
10645 /* receive this due to exchange closed */
10646 rjt_err = LSRJT_UNABLE_TPC;
10647 rjt_exp = LSEXP_INVALID_OX_RX;
10648 break;
10649 case ELS_CMD_FPIN:
10650 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10651 "RCV FPIN: did:x%x/ste:x%x "
10652 "flg:x%lx",
10653 did, vport->port_state, ndlp->nlp_flag);
10654
10655 lpfc_els_rcv_fpin(vport, (struct fc_els_fpin *)payload,
10656 payload_len);
10657
10658 /* There are no replies, so no rjt codes */
10659 break;
10660 case ELS_CMD_EDC:
10661 lpfc_els_rcv_edc(vport, elsiocb, ndlp);
10662 break;
10663 case ELS_CMD_RDF:
10664 phba->fc_stat.elsRcvRDF++;
10665 /* Accept RDF only from fabric controller */
10666 if (did != Fabric_Cntl_DID) {
10667 lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS,
10668 "1115 Received RDF from invalid DID "
10669 "x%x\n", did);
10670 rjt_err = LSRJT_PROTOCOL_ERR;
10671 rjt_exp = LSEXP_NOTHING_MORE;
10672 goto lsrjt;
10673 }
10674
10675 lpfc_els_rcv_rdf(vport, elsiocb, ndlp);
10676 break;
10677 default:
10678 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
10679 "RCV ELS cmd: cmd:x%x did:x%x/ste:x%x",
10680 cmd, did, vport->port_state);
10681
10682 /* Unsupported ELS command, reject */
10683 rjt_err = LSRJT_CMD_UNSUPPORTED;
10684 rjt_exp = LSEXP_NOTHING_MORE;
10685
10686 /* Unknown ELS command <elsCmd> received from NPORT <did> */
10687 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
10688 "0115 Unknown ELS command x%x "
10689 "received from NPORT x%x\n", cmd, did);
10690 if (newnode)
10691 lpfc_disc_state_machine(vport, ndlp, NULL,
10692 NLP_EVT_DEVICE_RM);
10693 break;
10694 }
10695
10696 lsrjt:
10697 /* check if need to LS_RJT received ELS cmd */
10698 if (rjt_err) {
10699 memset(&stat, 0, sizeof(stat));
10700 stat.un.b.lsRjtRsnCode = rjt_err;
10701 stat.un.b.lsRjtRsnCodeExp = rjt_exp;
10702 lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
10703 NULL);
10704 /* Remove the reference from above for new nodes. */
10705 if (newnode)
10706 lpfc_disc_state_machine(vport, ndlp, NULL,
10707 NLP_EVT_DEVICE_RM);
10708 }
10709
10710 /* Release the reference on this elsiocb, not the ndlp. */
10711 lpfc_nlp_put(elsiocb->ndlp);
10712 elsiocb->ndlp = NULL;
10713
10714 /* Special case. Driver received an unsolicited command that
10715 * unsupportable given the driver's current state. Reset the
10716 * link and start over.
10717 */
10718 if (init_link) {
10719 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10720 if (!mbox)
10721 return;
10722 lpfc_linkdown(phba);
10723 lpfc_init_link(phba, mbox,
10724 phba->cfg_topology,
10725 phba->cfg_link_speed);
10726 mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
10727 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
10728 mbox->vport = vport;
10729 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT) ==
10730 MBX_NOT_FINISHED)
10731 mempool_free(mbox, phba->mbox_mem_pool);
10732 }
10733
10734 return;
10735
10736 dropit:
10737 if (vport && !test_bit(FC_UNLOADING, &vport->load_flag))
10738 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10739 "0111 Dropping received ELS cmd "
10740 "Data: x%x x%x x%x x%x\n",
10741 cmd, status, get_job_word4(phba, elsiocb), did);
10742
10743 phba->fc_stat.elsRcvDrop++;
10744 }
10745
10746 /**
10747 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
10748 * @phba: pointer to lpfc hba data structure.
10749 * @pring: pointer to a SLI ring.
10750 * @elsiocb: pointer to lpfc els iocb data structure.
10751 *
10752 * This routine is used to process an unsolicited event received from a SLI
10753 * (Service Level Interface) ring. The actual processing of the data buffer
10754 * associated with the unsolicited event is done by invoking the routine
10755 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
10756 * SLI ring on which the unsolicited event was received.
10757 **/
10758 void
lpfc_els_unsol_event(struct lpfc_hba * phba,struct lpfc_sli_ring * pring,struct lpfc_iocbq * elsiocb)10759 lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
10760 struct lpfc_iocbq *elsiocb)
10761 {
10762 struct lpfc_vport *vport = elsiocb->vport;
10763 u32 ulp_command, status, parameter, bde_count = 0;
10764 IOCB_t *icmd;
10765 struct lpfc_wcqe_complete *wcqe_cmpl = NULL;
10766 struct lpfc_dmabuf *bdeBuf1 = elsiocb->cmd_dmabuf;
10767 struct lpfc_dmabuf *bdeBuf2 = elsiocb->bpl_dmabuf;
10768 dma_addr_t paddr;
10769
10770 elsiocb->cmd_dmabuf = NULL;
10771 elsiocb->rsp_dmabuf = NULL;
10772 elsiocb->bpl_dmabuf = NULL;
10773
10774 wcqe_cmpl = &elsiocb->wcqe_cmpl;
10775 ulp_command = get_job_cmnd(phba, elsiocb);
10776 status = get_job_ulpstatus(phba, elsiocb);
10777 parameter = get_job_word4(phba, elsiocb);
10778 if (phba->sli_rev == LPFC_SLI_REV4)
10779 bde_count = wcqe_cmpl->word3;
10780 else
10781 bde_count = elsiocb->iocb.ulpBdeCount;
10782
10783 if (status == IOSTAT_NEED_BUFFER) {
10784 lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
10785 } else if (status == IOSTAT_LOCAL_REJECT &&
10786 (parameter & IOERR_PARAM_MASK) ==
10787 IOERR_RCV_BUFFER_WAITING) {
10788 phba->fc_stat.NoRcvBuf++;
10789 /* Not enough posted buffers; Try posting more buffers */
10790 if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
10791 lpfc_sli3_post_buffer(phba, pring, 0);
10792 return;
10793 }
10794
10795 if (phba->sli_rev == LPFC_SLI_REV3) {
10796 icmd = &elsiocb->iocb;
10797 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
10798 (ulp_command == CMD_IOCB_RCV_ELS64_CX ||
10799 ulp_command == CMD_IOCB_RCV_SEQ64_CX)) {
10800 if (icmd->unsli3.rcvsli3.vpi == 0xffff)
10801 vport = phba->pport;
10802 else
10803 vport = lpfc_find_vport_by_vpid(phba,
10804 icmd->unsli3.rcvsli3.vpi);
10805 }
10806 }
10807
10808 /* If there are no BDEs associated
10809 * with this IOCB, there is nothing to do.
10810 */
10811 if (bde_count == 0)
10812 return;
10813
10814 /* Account for SLI2 or SLI3 and later unsolicited buffering */
10815 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
10816 elsiocb->cmd_dmabuf = bdeBuf1;
10817 if (bde_count == 2)
10818 elsiocb->bpl_dmabuf = bdeBuf2;
10819 } else {
10820 icmd = &elsiocb->iocb;
10821 paddr = getPaddr(icmd->un.cont64[0].addrHigh,
10822 icmd->un.cont64[0].addrLow);
10823 elsiocb->cmd_dmabuf = lpfc_sli_ringpostbuf_get(phba, pring,
10824 paddr);
10825 if (bde_count == 2) {
10826 paddr = getPaddr(icmd->un.cont64[1].addrHigh,
10827 icmd->un.cont64[1].addrLow);
10828 elsiocb->bpl_dmabuf = lpfc_sli_ringpostbuf_get(phba,
10829 pring,
10830 paddr);
10831 }
10832 }
10833
10834 lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
10835 /*
10836 * The different unsolicited event handlers would tell us
10837 * if they are done with "mp" by setting cmd_dmabuf to NULL.
10838 */
10839 if (elsiocb->cmd_dmabuf) {
10840 lpfc_in_buf_free(phba, elsiocb->cmd_dmabuf);
10841 elsiocb->cmd_dmabuf = NULL;
10842 }
10843
10844 if (elsiocb->bpl_dmabuf) {
10845 lpfc_in_buf_free(phba, elsiocb->bpl_dmabuf);
10846 elsiocb->bpl_dmabuf = NULL;
10847 }
10848
10849 }
10850
10851 static void
lpfc_start_fdmi(struct lpfc_vport * vport)10852 lpfc_start_fdmi(struct lpfc_vport *vport)
10853 {
10854 struct lpfc_nodelist *ndlp;
10855
10856 /* If this is the first time, allocate an ndlp and initialize
10857 * it. Otherwise, make sure the node is enabled and then do the
10858 * login.
10859 */
10860 ndlp = lpfc_findnode_did(vport, FDMI_DID);
10861 if (!ndlp) {
10862 ndlp = lpfc_nlp_init(vport, FDMI_DID);
10863 if (ndlp) {
10864 ndlp->nlp_type |= NLP_FABRIC;
10865 } else {
10866 return;
10867 }
10868 }
10869
10870 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
10871 lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
10872 }
10873
10874 /**
10875 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
10876 * @phba: pointer to lpfc hba data structure.
10877 * @vport: pointer to a virtual N_Port data structure.
10878 *
10879 * This routine issues a Port Login (PLOGI) to the Name Server with
10880 * State Change Request (SCR) for a @vport. This routine will create an
10881 * ndlp for the Name Server associated to the @vport if such node does
10882 * not already exist. The PLOGI to Name Server is issued by invoking the
10883 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
10884 * (FDMI) is configured to the @vport, a FDMI node will be created and
10885 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
10886 **/
10887 void
lpfc_do_scr_ns_plogi(struct lpfc_hba * phba,struct lpfc_vport * vport)10888 lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
10889 {
10890 struct lpfc_nodelist *ndlp;
10891
10892 /*
10893 * If lpfc_delay_discovery parameter is set and the clean address
10894 * bit is cleared and fc fabric parameters chenged, delay FC NPort
10895 * discovery.
10896 */
10897 if (test_bit(FC_DISC_DELAYED, &vport->fc_flag)) {
10898 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10899 "3334 Delay fc port discovery for %d secs\n",
10900 phba->fc_ratov);
10901 mod_timer(&vport->delayed_disc_tmo,
10902 jiffies + msecs_to_jiffies(1000 * phba->fc_ratov));
10903 return;
10904 }
10905
10906 ndlp = lpfc_findnode_did(vport, NameServer_DID);
10907 if (!ndlp) {
10908 ndlp = lpfc_nlp_init(vport, NameServer_DID);
10909 if (!ndlp) {
10910 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
10911 lpfc_disc_start(vport);
10912 return;
10913 }
10914 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10915 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10916 "0251 NameServer login: no memory\n");
10917 return;
10918 }
10919 }
10920
10921 ndlp->nlp_type |= NLP_FABRIC;
10922
10923 lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
10924
10925 if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
10926 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10927 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10928 "0252 Cannot issue NameServer login\n");
10929 return;
10930 }
10931
10932 if ((phba->cfg_enable_SmartSAN ||
10933 phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT) &&
10934 test_bit(FC_ALLOW_FDMI, &vport->load_flag))
10935 lpfc_start_fdmi(vport);
10936 }
10937
10938 /**
10939 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
10940 * @phba: pointer to lpfc hba data structure.
10941 * @pmb: pointer to the driver internal queue element for mailbox command.
10942 *
10943 * This routine is the completion callback function to register new vport
10944 * mailbox command. If the new vport mailbox command completes successfully,
10945 * the fabric registration login shall be performed on physical port (the
10946 * new vport created is actually a physical port, with VPI 0) or the port
10947 * login to Name Server for State Change Request (SCR) will be performed
10948 * on virtual port (real virtual port, with VPI greater than 0).
10949 **/
10950 static void
lpfc_cmpl_reg_new_vport(struct lpfc_hba * phba,LPFC_MBOXQ_t * pmb)10951 lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
10952 {
10953 struct lpfc_vport *vport = pmb->vport;
10954 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
10955 struct lpfc_nodelist *ndlp = pmb->ctx_ndlp;
10956 MAILBOX_t *mb = &pmb->u.mb;
10957 int rc;
10958
10959 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
10960
10961 if (mb->mbxStatus) {
10962 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
10963 "0915 Register VPI failed : Status: x%x"
10964 " upd bit: x%x \n", mb->mbxStatus,
10965 mb->un.varRegVpi.upd);
10966 if (phba->sli_rev == LPFC_SLI_REV4 &&
10967 mb->un.varRegVpi.upd)
10968 goto mbox_err_exit ;
10969
10970 switch (mb->mbxStatus) {
10971 case 0x11: /* unsupported feature */
10972 case 0x9603: /* max_vpi exceeded */
10973 case 0x9602: /* Link event since CLEAR_LA */
10974 /* giving up on vport registration */
10975 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
10976 clear_bit(FC_FABRIC, &vport->fc_flag);
10977 clear_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
10978 lpfc_can_disctmo(vport);
10979 break;
10980 /* If reg_vpi fail with invalid VPI status, re-init VPI */
10981 case 0x20:
10982 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
10983 lpfc_init_vpi(phba, pmb, vport->vpi);
10984 pmb->vport = vport;
10985 pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
10986 rc = lpfc_sli_issue_mbox(phba, pmb,
10987 MBX_NOWAIT);
10988 if (rc == MBX_NOT_FINISHED) {
10989 lpfc_printf_vlog(vport, KERN_ERR,
10990 LOG_TRACE_EVENT,
10991 "2732 Failed to issue INIT_VPI"
10992 " mailbox command\n");
10993 } else {
10994 lpfc_nlp_put(ndlp);
10995 return;
10996 }
10997 fallthrough;
10998 default:
10999 /* Try to recover from this error */
11000 if (phba->sli_rev == LPFC_SLI_REV4)
11001 lpfc_sli4_unreg_all_rpis(vport);
11002 lpfc_mbx_unreg_vpi(vport);
11003 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11004 if (mb->mbxStatus == MBX_NOT_FINISHED)
11005 break;
11006 if ((vport->port_type == LPFC_PHYSICAL_PORT) &&
11007 !test_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag)) {
11008 if (phba->sli_rev == LPFC_SLI_REV4)
11009 lpfc_issue_init_vfi(vport);
11010 else
11011 lpfc_initial_flogi(vport);
11012 } else {
11013 lpfc_initial_fdisc(vport);
11014 }
11015 break;
11016 }
11017 } else {
11018 spin_lock_irq(shost->host_lock);
11019 vport->vpi_state |= LPFC_VPI_REGISTERED;
11020 spin_unlock_irq(shost->host_lock);
11021 if (vport == phba->pport) {
11022 if (phba->sli_rev < LPFC_SLI_REV4)
11023 lpfc_issue_fabric_reglogin(vport);
11024 else {
11025 /*
11026 * If the physical port is instantiated using
11027 * FDISC, do not start vport discovery.
11028 */
11029 if (vport->port_state != LPFC_FDISC)
11030 lpfc_start_fdiscs(phba);
11031 lpfc_do_scr_ns_plogi(phba, vport);
11032 }
11033 } else {
11034 lpfc_do_scr_ns_plogi(phba, vport);
11035 }
11036 }
11037 mbox_err_exit:
11038 /* Now, we decrement the ndlp reference count held for this
11039 * callback function
11040 */
11041 lpfc_nlp_put(ndlp);
11042
11043 mempool_free(pmb, phba->mbox_mem_pool);
11044
11045 /* reinitialize the VMID datastructure before returning.
11046 * this is specifically for vport
11047 */
11048 if (lpfc_is_vmid_enabled(phba))
11049 lpfc_reinit_vmid(vport);
11050 vport->vmid_flag = vport->phba->pport->vmid_flag;
11051
11052 return;
11053 }
11054
11055 /**
11056 * lpfc_register_new_vport - Register a new vport with a HBA
11057 * @phba: pointer to lpfc hba data structure.
11058 * @vport: pointer to a host virtual N_Port data structure.
11059 * @ndlp: pointer to a node-list data structure.
11060 *
11061 * This routine registers the @vport as a new virtual port with a HBA.
11062 * It is done through a registering vpi mailbox command.
11063 **/
11064 void
lpfc_register_new_vport(struct lpfc_hba * phba,struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)11065 lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
11066 struct lpfc_nodelist *ndlp)
11067 {
11068 LPFC_MBOXQ_t *mbox;
11069
11070 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
11071 if (mbox) {
11072 lpfc_reg_vpi(vport, mbox);
11073 mbox->vport = vport;
11074 mbox->ctx_ndlp = lpfc_nlp_get(ndlp);
11075 if (!mbox->ctx_ndlp) {
11076 mempool_free(mbox, phba->mbox_mem_pool);
11077 goto mbox_err_exit;
11078 }
11079
11080 mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
11081 if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
11082 == MBX_NOT_FINISHED) {
11083 /* mailbox command not success, decrement ndlp
11084 * reference count for this command
11085 */
11086 lpfc_nlp_put(ndlp);
11087 mempool_free(mbox, phba->mbox_mem_pool);
11088
11089 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11090 "0253 Register VPI: Can't send mbox\n");
11091 goto mbox_err_exit;
11092 }
11093 } else {
11094 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11095 "0254 Register VPI: no memory\n");
11096 goto mbox_err_exit;
11097 }
11098 return;
11099
11100 mbox_err_exit:
11101 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11102 clear_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11103 return;
11104 }
11105
11106 /**
11107 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
11108 * @phba: pointer to lpfc hba data structure.
11109 *
11110 * This routine cancels the retry delay timers to all the vports.
11111 **/
11112 void
lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba * phba)11113 lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
11114 {
11115 struct lpfc_vport **vports;
11116 struct lpfc_nodelist *ndlp;
11117 uint32_t link_state;
11118 int i;
11119
11120 /* Treat this failure as linkdown for all vports */
11121 link_state = phba->link_state;
11122 lpfc_linkdown(phba);
11123 phba->link_state = link_state;
11124
11125 vports = lpfc_create_vport_work_array(phba);
11126
11127 if (vports) {
11128 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
11129 ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
11130 if (ndlp)
11131 lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
11132 lpfc_els_flush_cmd(vports[i]);
11133 }
11134 lpfc_destroy_vport_work_array(phba, vports);
11135 }
11136 }
11137
11138 /**
11139 * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
11140 * @phba: pointer to lpfc hba data structure.
11141 *
11142 * This routine abort all pending discovery commands and
11143 * start a timer to retry FLOGI for the physical port
11144 * discovery.
11145 **/
11146 void
lpfc_retry_pport_discovery(struct lpfc_hba * phba)11147 lpfc_retry_pport_discovery(struct lpfc_hba *phba)
11148 {
11149 struct lpfc_nodelist *ndlp;
11150
11151 /* Cancel the all vports retry delay retry timers */
11152 lpfc_cancel_all_vport_retry_delay_timer(phba);
11153
11154 /* If fabric require FLOGI, then re-instantiate physical login */
11155 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
11156 if (!ndlp)
11157 return;
11158
11159 mod_timer(&ndlp->nlp_delayfunc, jiffies + msecs_to_jiffies(1000));
11160 set_bit(NLP_DELAY_TMO, &ndlp->nlp_flag);
11161 ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
11162 phba->pport->port_state = LPFC_FLOGI;
11163 return;
11164 }
11165
11166 /**
11167 * lpfc_fabric_login_reqd - Check if FLOGI required.
11168 * @phba: pointer to lpfc hba data structure.
11169 * @cmdiocb: pointer to FDISC command iocb.
11170 * @rspiocb: pointer to FDISC response iocb.
11171 *
11172 * This routine checks if a FLOGI is reguired for FDISC
11173 * to succeed.
11174 **/
11175 static int
lpfc_fabric_login_reqd(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)11176 lpfc_fabric_login_reqd(struct lpfc_hba *phba,
11177 struct lpfc_iocbq *cmdiocb,
11178 struct lpfc_iocbq *rspiocb)
11179 {
11180 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
11181 u32 ulp_word4 = get_job_word4(phba, rspiocb);
11182
11183 if (ulp_status != IOSTAT_FABRIC_RJT ||
11184 ulp_word4 != RJT_LOGIN_REQUIRED)
11185 return 0;
11186 else
11187 return 1;
11188 }
11189
11190 /**
11191 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
11192 * @phba: pointer to lpfc hba data structure.
11193 * @cmdiocb: pointer to lpfc command iocb data structure.
11194 * @rspiocb: pointer to lpfc response iocb data structure.
11195 *
11196 * This routine is the completion callback function to a Fabric Discover
11197 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
11198 * single threaded, each FDISC completion callback function will reset
11199 * the discovery timer for all vports such that the timers will not get
11200 * unnecessary timeout. The function checks the FDISC IOCB status. If error
11201 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
11202 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
11203 * assigned to the vport has been changed with the completion of the FDISC
11204 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
11205 * are unregistered from the HBA, and then the lpfc_register_new_vport()
11206 * routine is invoked to register new vport with the HBA. Otherwise, the
11207 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
11208 * Server for State Change Request (SCR).
11209 **/
11210 static void
lpfc_cmpl_els_fdisc(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)11211 lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11212 struct lpfc_iocbq *rspiocb)
11213 {
11214 struct lpfc_vport *vport = cmdiocb->vport;
11215 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
11216 struct lpfc_nodelist *np;
11217 struct lpfc_nodelist *next_np;
11218 struct lpfc_iocbq *piocb;
11219 struct lpfc_dmabuf *pcmd = cmdiocb->cmd_dmabuf, *prsp;
11220 struct serv_parm *sp;
11221 uint8_t fabric_param_changed;
11222 u32 ulp_status, ulp_word4;
11223
11224 ulp_status = get_job_ulpstatus(phba, rspiocb);
11225 ulp_word4 = get_job_word4(phba, rspiocb);
11226
11227 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
11228 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
11229 ulp_status, ulp_word4,
11230 vport->fc_prevDID);
11231 /* Since all FDISCs are being single threaded, we
11232 * must reset the discovery timer for ALL vports
11233 * waiting to send FDISC when one completes.
11234 */
11235 list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
11236 lpfc_set_disctmo(piocb->vport);
11237 }
11238
11239 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11240 "FDISC cmpl: status:x%x/x%x prevdid:x%x",
11241 ulp_status, ulp_word4, vport->fc_prevDID);
11242
11243 if (ulp_status) {
11244
11245 if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
11246 lpfc_retry_pport_discovery(phba);
11247 goto out;
11248 }
11249
11250 /* Check for retry */
11251 if (lpfc_els_retry(phba, cmdiocb, rspiocb))
11252 goto out;
11253 /* Warn FDISC status */
11254 lpfc_vlog_msg(vport, KERN_WARNING, LOG_ELS,
11255 "0126 FDISC cmpl status: x%x/x%x)\n",
11256 ulp_status, ulp_word4);
11257 goto fdisc_failed;
11258 }
11259
11260 lpfc_check_nlp_post_devloss(vport, ndlp);
11261
11262 clear_bit(FC_VPORT_CVL_RCVD, &vport->fc_flag);
11263 clear_bit(FC_VPORT_LOGO_RCVD, &vport->fc_flag);
11264 set_bit(FC_FABRIC, &vport->fc_flag);
11265 if (vport->phba->fc_topology == LPFC_TOPOLOGY_LOOP)
11266 set_bit(FC_PUBLIC_LOOP, &vport->fc_flag);
11267
11268 vport->fc_myDID = ulp_word4 & Mask_DID;
11269 lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
11270 prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
11271 if (!prsp)
11272 goto out;
11273 if (!lpfc_is_els_acc_rsp(prsp))
11274 goto out;
11275
11276 sp = prsp->virt + sizeof(uint32_t);
11277 fabric_param_changed = lpfc_check_clean_addr_bit(vport, sp);
11278 memcpy(&vport->fabric_portname, &sp->portName,
11279 sizeof(struct lpfc_name));
11280 memcpy(&vport->fabric_nodename, &sp->nodeName,
11281 sizeof(struct lpfc_name));
11282 if (fabric_param_changed &&
11283 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
11284 /* If our NportID changed, we need to ensure all
11285 * remaining NPORTs get unreg_login'ed so we can
11286 * issue unreg_vpi.
11287 */
11288 list_for_each_entry_safe(np, next_np,
11289 &vport->fc_nodes, nlp_listp) {
11290 if ((np->nlp_state != NLP_STE_NPR_NODE) ||
11291 !test_bit(NLP_NPR_ADISC, &np->nlp_flag))
11292 continue;
11293 clear_bit(NLP_NPR_ADISC, &np->nlp_flag);
11294 lpfc_unreg_rpi(vport, np);
11295 }
11296 lpfc_cleanup_pending_mbox(vport);
11297
11298 if (phba->sli_rev == LPFC_SLI_REV4)
11299 lpfc_sli4_unreg_all_rpis(vport);
11300
11301 lpfc_mbx_unreg_vpi(vport);
11302 set_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag);
11303 if (phba->sli_rev == LPFC_SLI_REV4)
11304 set_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag);
11305 else
11306 set_bit(FC_LOGO_RCVD_DID_CHNG, &vport->fc_flag);
11307 } else if ((phba->sli_rev == LPFC_SLI_REV4) &&
11308 !test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag)) {
11309 /*
11310 * Driver needs to re-reg VPI in order for f/w
11311 * to update the MAC address.
11312 */
11313 lpfc_register_new_vport(phba, vport, ndlp);
11314 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
11315 goto out;
11316 }
11317
11318 if (test_bit(FC_VPORT_NEEDS_INIT_VPI, &vport->fc_flag))
11319 lpfc_issue_init_vpi(vport);
11320 else if (test_bit(FC_VPORT_NEEDS_REG_VPI, &vport->fc_flag))
11321 lpfc_register_new_vport(phba, vport, ndlp);
11322 else
11323 lpfc_do_scr_ns_plogi(phba, vport);
11324
11325 /* The FDISC completed successfully. Move the fabric ndlp to
11326 * UNMAPPED state and register with the transport.
11327 */
11328 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
11329 goto out;
11330
11331 fdisc_failed:
11332 if (vport->fc_vport &&
11333 (vport->fc_vport->vport_state != FC_VPORT_NO_FABRIC_RSCS))
11334 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11335 /* Cancel discovery timer */
11336 lpfc_can_disctmo(vport);
11337 out:
11338 lpfc_els_free_iocb(phba, cmdiocb);
11339 lpfc_nlp_put(ndlp);
11340 }
11341
11342 /**
11343 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
11344 * @vport: pointer to a virtual N_Port data structure.
11345 * @ndlp: pointer to a node-list data structure.
11346 * @retry: number of retries to the command IOCB.
11347 *
11348 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
11349 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
11350 * routine to issue the IOCB, which makes sure only one outstanding fabric
11351 * IOCB will be sent off HBA at any given time.
11352 *
11353 * Note that the ndlp reference count will be incremented by 1 for holding the
11354 * ndlp and the reference to ndlp will be stored into the ndlp field of
11355 * the IOCB for the completion callback function to the FDISC ELS command.
11356 *
11357 * Return code
11358 * 0 - Successfully issued fdisc iocb command
11359 * 1 - Failed to issue fdisc iocb command
11360 **/
11361 static int
lpfc_issue_els_fdisc(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp,uint8_t retry)11362 lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
11363 uint8_t retry)
11364 {
11365 struct lpfc_hba *phba = vport->phba;
11366 IOCB_t *icmd;
11367 union lpfc_wqe128 *wqe = NULL;
11368 struct lpfc_iocbq *elsiocb;
11369 struct serv_parm *sp;
11370 uint8_t *pcmd;
11371 uint16_t cmdsize;
11372 int did = ndlp->nlp_DID;
11373 int rc;
11374
11375 vport->port_state = LPFC_FDISC;
11376 vport->fc_myDID = 0;
11377 cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
11378 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
11379 ELS_CMD_FDISC);
11380 if (!elsiocb) {
11381 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11382 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11383 "0255 Issue FDISC: no IOCB\n");
11384 return 1;
11385 }
11386
11387 if (phba->sli_rev == LPFC_SLI_REV4) {
11388 wqe = &elsiocb->wqe;
11389 bf_set(els_req64_sid, &wqe->els_req, 0);
11390 bf_set(els_req64_sp, &wqe->els_req, 1);
11391 } else {
11392 icmd = &elsiocb->iocb;
11393 icmd->un.elsreq64.myID = 0;
11394 icmd->un.elsreq64.fl = 1;
11395 icmd->ulpCt_h = 1;
11396 icmd->ulpCt_l = 0;
11397 }
11398
11399 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
11400 *((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
11401 pcmd += sizeof(uint32_t); /* CSP Word 1 */
11402 memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
11403 sp = (struct serv_parm *) pcmd;
11404 /* Setup CSPs accordingly for Fabric */
11405 sp->cmn.e_d_tov = 0;
11406 sp->cmn.w2.r_a_tov = 0;
11407 sp->cmn.virtual_fabric_support = 0;
11408 sp->cls1.classValid = 0;
11409 sp->cls2.seqDelivery = 1;
11410 sp->cls3.seqDelivery = 1;
11411
11412 pcmd += sizeof(uint32_t); /* CSP Word 2 */
11413 pcmd += sizeof(uint32_t); /* CSP Word 3 */
11414 pcmd += sizeof(uint32_t); /* CSP Word 4 */
11415 pcmd += sizeof(uint32_t); /* Port Name */
11416 memcpy(pcmd, &vport->fc_portname, 8);
11417 pcmd += sizeof(uint32_t); /* Node Name */
11418 pcmd += sizeof(uint32_t); /* Node Name */
11419 memcpy(pcmd, &vport->fc_nodename, 8);
11420 sp->cmn.valid_vendor_ver_level = 0;
11421 memset(sp->un.vendorVersion, 0, sizeof(sp->un.vendorVersion));
11422 lpfc_set_disctmo(vport);
11423
11424 phba->fc_stat.elsXmitFDISC++;
11425 elsiocb->cmd_cmpl = lpfc_cmpl_els_fdisc;
11426
11427 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11428 "Issue FDISC: did:x%x",
11429 did, 0, 0);
11430
11431 elsiocb->ndlp = lpfc_nlp_get(ndlp);
11432 if (!elsiocb->ndlp)
11433 goto err_out;
11434
11435 rc = lpfc_issue_fabric_iocb(phba, elsiocb);
11436 if (rc == IOCB_ERROR) {
11437 lpfc_nlp_put(ndlp);
11438 goto err_out;
11439 }
11440
11441 lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
11442 return 0;
11443
11444 err_out:
11445 lpfc_els_free_iocb(phba, elsiocb);
11446 lpfc_vport_set_state(vport, FC_VPORT_FAILED);
11447 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
11448 "0256 Issue FDISC: Cannot send IOCB\n");
11449 return 1;
11450 }
11451
11452 /**
11453 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
11454 * @phba: pointer to lpfc hba data structure.
11455 * @cmdiocb: pointer to lpfc command iocb data structure.
11456 * @rspiocb: pointer to lpfc response iocb data structure.
11457 *
11458 * This routine is the completion callback function to the issuing of a LOGO
11459 * ELS command off a vport. It frees the command IOCB and then decrement the
11460 * reference count held on ndlp for this completion function, indicating that
11461 * the reference to the ndlp is no long needed. Note that the
11462 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
11463 * callback function and an additional explicit ndlp reference decrementation
11464 * will trigger the actual release of the ndlp.
11465 **/
11466 static void
lpfc_cmpl_els_npiv_logo(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)11467 lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11468 struct lpfc_iocbq *rspiocb)
11469 {
11470 struct lpfc_vport *vport = cmdiocb->vport;
11471 IOCB_t *irsp;
11472 struct lpfc_nodelist *ndlp;
11473 u32 ulp_status, ulp_word4, did, tmo;
11474
11475 ndlp = cmdiocb->ndlp;
11476
11477 ulp_status = get_job_ulpstatus(phba, rspiocb);
11478 ulp_word4 = get_job_word4(phba, rspiocb);
11479
11480 if (phba->sli_rev == LPFC_SLI_REV4) {
11481 did = get_job_els_rsp64_did(phba, cmdiocb);
11482 tmo = get_wqe_tmo(cmdiocb);
11483 } else {
11484 irsp = &rspiocb->iocb;
11485 did = get_job_els_rsp64_did(phba, rspiocb);
11486 tmo = irsp->ulpTimeout;
11487 }
11488
11489 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11490 "LOGO npiv cmpl: status:x%x/x%x did:x%x",
11491 ulp_status, ulp_word4, did);
11492
11493 /* NPIV LOGO completes to NPort <nlp_DID> */
11494 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
11495 "2928 NPIV LOGO completes to NPort x%x "
11496 "Data: x%x x%x x%x x%x x%x x%lx x%x\n",
11497 ndlp->nlp_DID, ulp_status, ulp_word4,
11498 tmo, vport->num_disc_nodes,
11499 kref_read(&ndlp->kref), ndlp->nlp_flag,
11500 ndlp->fc4_xpt_flags);
11501
11502 if (ulp_status == IOSTAT_SUCCESS) {
11503 clear_bit(FC_NDISC_ACTIVE, &vport->fc_flag);
11504 clear_bit(FC_FABRIC, &vport->fc_flag);
11505 lpfc_can_disctmo(vport);
11506 }
11507
11508 if (test_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags)) {
11509 /* Wake up lpfc_vport_delete if waiting...*/
11510 if (ndlp->logo_waitq)
11511 wake_up(ndlp->logo_waitq);
11512 clear_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
11513 clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
11514 clear_bit(NLP_WAIT_FOR_LOGO, &ndlp->save_flags);
11515 }
11516
11517 /* Safe to release resources now. */
11518 lpfc_els_free_iocb(phba, cmdiocb);
11519 lpfc_nlp_put(ndlp);
11520 }
11521
11522 /**
11523 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
11524 * @vport: pointer to a virtual N_Port data structure.
11525 * @ndlp: pointer to a node-list data structure.
11526 *
11527 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
11528 *
11529 * Note that the ndlp reference count will be incremented by 1 for holding the
11530 * ndlp and the reference to ndlp will be stored into the ndlp field of
11531 * the IOCB for the completion callback function to the LOGO ELS command.
11532 *
11533 * Return codes
11534 * 0 - Successfully issued logo off the @vport
11535 * 1 - Failed to issue logo off the @vport
11536 **/
11537 int
lpfc_issue_els_npiv_logo(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)11538 lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
11539 {
11540 int rc = 0;
11541 struct lpfc_hba *phba = vport->phba;
11542 struct lpfc_iocbq *elsiocb;
11543 uint8_t *pcmd;
11544 uint16_t cmdsize;
11545
11546 cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
11547 elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
11548 ELS_CMD_LOGO);
11549 if (!elsiocb)
11550 return 1;
11551
11552 pcmd = (uint8_t *)elsiocb->cmd_dmabuf->virt;
11553 *((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
11554 pcmd += sizeof(uint32_t);
11555
11556 /* Fill in LOGO payload */
11557 *((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
11558 pcmd += sizeof(uint32_t);
11559 memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
11560
11561 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
11562 "Issue LOGO npiv did:x%x flg:x%lx",
11563 ndlp->nlp_DID, ndlp->nlp_flag, 0);
11564
11565 elsiocb->cmd_cmpl = lpfc_cmpl_els_npiv_logo;
11566 set_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
11567 elsiocb->ndlp = lpfc_nlp_get(ndlp);
11568 if (!elsiocb->ndlp) {
11569 lpfc_els_free_iocb(phba, elsiocb);
11570 goto err;
11571 }
11572
11573 rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
11574 if (rc == IOCB_ERROR) {
11575 lpfc_els_free_iocb(phba, elsiocb);
11576 lpfc_nlp_put(ndlp);
11577 goto err;
11578 }
11579 return 0;
11580
11581 err:
11582 clear_bit(NLP_LOGO_SND, &ndlp->nlp_flag);
11583 return 1;
11584 }
11585
11586 /**
11587 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
11588 * @t: timer context used to obtain the lpfc hba.
11589 *
11590 * This routine is invoked by the fabric iocb block timer after
11591 * timeout. It posts the fabric iocb block timeout event by setting the
11592 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
11593 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
11594 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
11595 * posted event WORKER_FABRIC_BLOCK_TMO.
11596 **/
11597 void
lpfc_fabric_block_timeout(struct timer_list * t)11598 lpfc_fabric_block_timeout(struct timer_list *t)
11599 {
11600 struct lpfc_hba *phba = from_timer(phba, t, fabric_block_timer);
11601 unsigned long iflags;
11602 uint32_t tmo_posted;
11603
11604 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
11605 tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
11606 if (!tmo_posted)
11607 phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
11608 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
11609
11610 if (!tmo_posted)
11611 lpfc_worker_wake_up(phba);
11612 return;
11613 }
11614
11615 /**
11616 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
11617 * @phba: pointer to lpfc hba data structure.
11618 *
11619 * This routine issues one fabric iocb from the driver internal list to
11620 * the HBA. It first checks whether it's ready to issue one fabric iocb to
11621 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
11622 * remove one pending fabric iocb from the driver internal list and invokes
11623 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
11624 **/
11625 static void
lpfc_resume_fabric_iocbs(struct lpfc_hba * phba)11626 lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
11627 {
11628 struct lpfc_iocbq *iocb;
11629 unsigned long iflags;
11630 int ret;
11631
11632 repeat:
11633 iocb = NULL;
11634 spin_lock_irqsave(&phba->hbalock, iflags);
11635 /* Post any pending iocb to the SLI layer */
11636 if (atomic_read(&phba->fabric_iocb_count) == 0) {
11637 list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
11638 list);
11639 if (iocb)
11640 /* Increment fabric iocb count to hold the position */
11641 atomic_inc(&phba->fabric_iocb_count);
11642 }
11643 spin_unlock_irqrestore(&phba->hbalock, iflags);
11644 if (iocb) {
11645 iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
11646 iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
11647 iocb->cmd_flag |= LPFC_IO_FABRIC;
11648
11649 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
11650 "Fabric sched1: ste:x%x",
11651 iocb->vport->port_state, 0, 0);
11652
11653 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
11654
11655 if (ret == IOCB_ERROR) {
11656 iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
11657 iocb->fabric_cmd_cmpl = NULL;
11658 iocb->cmd_flag &= ~LPFC_IO_FABRIC;
11659 set_job_ulpstatus(iocb, IOSTAT_LOCAL_REJECT);
11660 iocb->wcqe_cmpl.parameter = IOERR_SLI_ABORTED;
11661 iocb->cmd_cmpl(phba, iocb, iocb);
11662
11663 atomic_dec(&phba->fabric_iocb_count);
11664 goto repeat;
11665 }
11666 }
11667 }
11668
11669 /**
11670 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
11671 * @phba: pointer to lpfc hba data structure.
11672 *
11673 * This routine unblocks the issuing fabric iocb command. The function
11674 * will clear the fabric iocb block bit and then invoke the routine
11675 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
11676 * from the driver internal fabric iocb list.
11677 **/
11678 void
lpfc_unblock_fabric_iocbs(struct lpfc_hba * phba)11679 lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
11680 {
11681 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11682
11683 lpfc_resume_fabric_iocbs(phba);
11684 return;
11685 }
11686
11687 /**
11688 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
11689 * @phba: pointer to lpfc hba data structure.
11690 *
11691 * This routine blocks the issuing fabric iocb for a specified amount of
11692 * time (currently 100 ms). This is done by set the fabric iocb block bit
11693 * and set up a timeout timer for 100ms. When the block bit is set, no more
11694 * fabric iocb will be issued out of the HBA.
11695 **/
11696 static void
lpfc_block_fabric_iocbs(struct lpfc_hba * phba)11697 lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
11698 {
11699 int blocked;
11700
11701 blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11702 /* Start a timer to unblock fabric iocbs after 100ms */
11703 if (!blocked)
11704 mod_timer(&phba->fabric_block_timer,
11705 jiffies + msecs_to_jiffies(100));
11706
11707 return;
11708 }
11709
11710 /**
11711 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
11712 * @phba: pointer to lpfc hba data structure.
11713 * @cmdiocb: pointer to lpfc command iocb data structure.
11714 * @rspiocb: pointer to lpfc response iocb data structure.
11715 *
11716 * This routine is the callback function that is put to the fabric iocb's
11717 * callback function pointer (iocb->cmd_cmpl). The original iocb's callback
11718 * function pointer has been stored in iocb->fabric_cmd_cmpl. This callback
11719 * function first restores and invokes the original iocb's callback function
11720 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
11721 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
11722 **/
11723 static void
lpfc_cmpl_fabric_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)11724 lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
11725 struct lpfc_iocbq *rspiocb)
11726 {
11727 struct ls_rjt stat;
11728 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
11729 u32 ulp_word4 = get_job_word4(phba, rspiocb);
11730
11731 WARN_ON((cmdiocb->cmd_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC);
11732
11733 switch (ulp_status) {
11734 case IOSTAT_NPORT_RJT:
11735 case IOSTAT_FABRIC_RJT:
11736 if (ulp_word4 & RJT_UNAVAIL_TEMP)
11737 lpfc_block_fabric_iocbs(phba);
11738 break;
11739
11740 case IOSTAT_NPORT_BSY:
11741 case IOSTAT_FABRIC_BSY:
11742 lpfc_block_fabric_iocbs(phba);
11743 break;
11744
11745 case IOSTAT_LS_RJT:
11746 stat.un.ls_rjt_error_be =
11747 cpu_to_be32(ulp_word4);
11748 if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
11749 (stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
11750 lpfc_block_fabric_iocbs(phba);
11751 break;
11752 }
11753
11754 BUG_ON(atomic_read(&phba->fabric_iocb_count) == 0);
11755
11756 cmdiocb->cmd_cmpl = cmdiocb->fabric_cmd_cmpl;
11757 cmdiocb->fabric_cmd_cmpl = NULL;
11758 cmdiocb->cmd_flag &= ~LPFC_IO_FABRIC;
11759 cmdiocb->cmd_cmpl(phba, cmdiocb, rspiocb);
11760
11761 atomic_dec(&phba->fabric_iocb_count);
11762 if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
11763 /* Post any pending iocbs to HBA */
11764 lpfc_resume_fabric_iocbs(phba);
11765 }
11766 }
11767
11768 /**
11769 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
11770 * @phba: pointer to lpfc hba data structure.
11771 * @iocb: pointer to lpfc command iocb data structure.
11772 *
11773 * This routine is used as the top-level API for issuing a fabric iocb command
11774 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
11775 * function makes sure that only one fabric bound iocb will be outstanding at
11776 * any given time. As such, this function will first check to see whether there
11777 * is already an outstanding fabric iocb on the wire. If so, it will put the
11778 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
11779 * issued later. Otherwise, it will issue the iocb on the wire and update the
11780 * fabric iocb count it indicate that there is one fabric iocb on the wire.
11781 *
11782 * Note, this implementation has a potential sending out fabric IOCBs out of
11783 * order. The problem is caused by the construction of the "ready" boolen does
11784 * not include the condition that the internal fabric IOCB list is empty. As
11785 * such, it is possible a fabric IOCB issued by this routine might be "jump"
11786 * ahead of the fabric IOCBs in the internal list.
11787 *
11788 * Return code
11789 * IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
11790 * IOCB_ERROR - failed to issue fabric iocb
11791 **/
11792 static int
lpfc_issue_fabric_iocb(struct lpfc_hba * phba,struct lpfc_iocbq * iocb)11793 lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
11794 {
11795 unsigned long iflags;
11796 int ready;
11797 int ret;
11798
11799 BUG_ON(atomic_read(&phba->fabric_iocb_count) > 1);
11800
11801 spin_lock_irqsave(&phba->hbalock, iflags);
11802 ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
11803 !test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
11804
11805 if (ready)
11806 /* Increment fabric iocb count to hold the position */
11807 atomic_inc(&phba->fabric_iocb_count);
11808 spin_unlock_irqrestore(&phba->hbalock, iflags);
11809 if (ready) {
11810 iocb->fabric_cmd_cmpl = iocb->cmd_cmpl;
11811 iocb->cmd_cmpl = lpfc_cmpl_fabric_iocb;
11812 iocb->cmd_flag |= LPFC_IO_FABRIC;
11813
11814 lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
11815 "Fabric sched2: ste:x%x",
11816 iocb->vport->port_state, 0, 0);
11817
11818 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
11819
11820 if (ret == IOCB_ERROR) {
11821 iocb->cmd_cmpl = iocb->fabric_cmd_cmpl;
11822 iocb->fabric_cmd_cmpl = NULL;
11823 iocb->cmd_flag &= ~LPFC_IO_FABRIC;
11824 atomic_dec(&phba->fabric_iocb_count);
11825 }
11826 } else {
11827 spin_lock_irqsave(&phba->hbalock, iflags);
11828 list_add_tail(&iocb->list, &phba->fabric_iocb_list);
11829 spin_unlock_irqrestore(&phba->hbalock, iflags);
11830 ret = IOCB_SUCCESS;
11831 }
11832 return ret;
11833 }
11834
11835 /**
11836 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
11837 * @vport: pointer to a virtual N_Port data structure.
11838 *
11839 * This routine aborts all the IOCBs associated with a @vport from the
11840 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
11841 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
11842 * list, removes each IOCB associated with the @vport off the list, set the
11843 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
11844 * associated with the IOCB.
11845 **/
lpfc_fabric_abort_vport(struct lpfc_vport * vport)11846 static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
11847 {
11848 LIST_HEAD(completions);
11849 struct lpfc_hba *phba = vport->phba;
11850 struct lpfc_iocbq *tmp_iocb, *piocb;
11851
11852 spin_lock_irq(&phba->hbalock);
11853 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
11854 list) {
11855
11856 if (piocb->vport != vport)
11857 continue;
11858
11859 list_move_tail(&piocb->list, &completions);
11860 }
11861 spin_unlock_irq(&phba->hbalock);
11862
11863 /* Cancel all the IOCBs from the completions list */
11864 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
11865 IOERR_SLI_ABORTED);
11866 }
11867
11868 /**
11869 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
11870 * @ndlp: pointer to a node-list data structure.
11871 *
11872 * This routine aborts all the IOCBs associated with an @ndlp from the
11873 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
11874 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
11875 * list, removes each IOCB associated with the @ndlp off the list, set the
11876 * status field to IOSTAT_LOCAL_REJECT, and invokes the callback function
11877 * associated with the IOCB.
11878 **/
lpfc_fabric_abort_nport(struct lpfc_nodelist * ndlp)11879 void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
11880 {
11881 LIST_HEAD(completions);
11882 struct lpfc_hba *phba = ndlp->phba;
11883 struct lpfc_iocbq *tmp_iocb, *piocb;
11884 struct lpfc_sli_ring *pring;
11885
11886 pring = lpfc_phba_elsring(phba);
11887
11888 if (unlikely(!pring))
11889 return;
11890
11891 spin_lock_irq(&phba->hbalock);
11892 list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
11893 list) {
11894 if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {
11895
11896 list_move_tail(&piocb->list, &completions);
11897 }
11898 }
11899 spin_unlock_irq(&phba->hbalock);
11900
11901 /* Cancel all the IOCBs from the completions list */
11902 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
11903 IOERR_SLI_ABORTED);
11904 }
11905
11906 /**
11907 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
11908 * @phba: pointer to lpfc hba data structure.
11909 *
11910 * This routine aborts all the IOCBs currently on the driver internal
11911 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
11912 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
11913 * list, removes IOCBs off the list, set the status field to
11914 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
11915 * the IOCB.
11916 **/
lpfc_fabric_abort_hba(struct lpfc_hba * phba)11917 void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
11918 {
11919 LIST_HEAD(completions);
11920
11921 spin_lock_irq(&phba->hbalock);
11922 list_splice_init(&phba->fabric_iocb_list, &completions);
11923 spin_unlock_irq(&phba->hbalock);
11924
11925 /* Cancel all the IOCBs from the completions list */
11926 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
11927 IOERR_SLI_ABORTED);
11928 }
11929
11930 /**
11931 * lpfc_sli4_vport_delete_els_xri_aborted -Remove all ndlp references for vport
11932 * @vport: pointer to lpfc vport data structure.
11933 *
11934 * This routine is invoked by the vport cleanup for deletions and the cleanup
11935 * for an ndlp on removal.
11936 **/
11937 void
lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport * vport)11938 lpfc_sli4_vport_delete_els_xri_aborted(struct lpfc_vport *vport)
11939 {
11940 struct lpfc_hba *phba = vport->phba;
11941 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
11942 struct lpfc_nodelist *ndlp = NULL;
11943 unsigned long iflag = 0;
11944
11945 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
11946 list_for_each_entry_safe(sglq_entry, sglq_next,
11947 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
11948 if (sglq_entry->ndlp && sglq_entry->ndlp->vport == vport) {
11949 lpfc_nlp_put(sglq_entry->ndlp);
11950 ndlp = sglq_entry->ndlp;
11951 sglq_entry->ndlp = NULL;
11952
11953 /* If the xri on the abts_els_sgl list is for the Fport
11954 * node and the vport is unloading, the xri aborted wcqe
11955 * likely isn't coming back. Just release the sgl.
11956 */
11957 if (test_bit(FC_UNLOADING, &vport->load_flag) &&
11958 ndlp->nlp_DID == Fabric_DID) {
11959 list_del(&sglq_entry->list);
11960 sglq_entry->state = SGL_FREED;
11961 list_add_tail(&sglq_entry->list,
11962 &phba->sli4_hba.lpfc_els_sgl_list);
11963 }
11964 }
11965 }
11966 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
11967 return;
11968 }
11969
11970 /**
11971 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
11972 * @phba: pointer to lpfc hba data structure.
11973 * @axri: pointer to the els xri abort wcqe structure.
11974 *
11975 * This routine is invoked by the worker thread to process a SLI4 slow-path
11976 * ELS aborted xri.
11977 **/
11978 void
lpfc_sli4_els_xri_aborted(struct lpfc_hba * phba,struct sli4_wcqe_xri_aborted * axri)11979 lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
11980 struct sli4_wcqe_xri_aborted *axri)
11981 {
11982 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
11983 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
11984 uint16_t lxri = 0;
11985
11986 struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
11987 unsigned long iflag = 0;
11988 struct lpfc_nodelist *ndlp;
11989 struct lpfc_sli_ring *pring;
11990
11991 pring = lpfc_phba_elsring(phba);
11992
11993 spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, iflag);
11994 list_for_each_entry_safe(sglq_entry, sglq_next,
11995 &phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
11996 if (sglq_entry->sli4_xritag == xri) {
11997 list_del(&sglq_entry->list);
11998 ndlp = sglq_entry->ndlp;
11999 sglq_entry->ndlp = NULL;
12000 list_add_tail(&sglq_entry->list,
12001 &phba->sli4_hba.lpfc_els_sgl_list);
12002 sglq_entry->state = SGL_FREED;
12003 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock,
12004 iflag);
12005
12006 if (ndlp) {
12007 lpfc_set_rrq_active(phba, ndlp,
12008 sglq_entry->sli4_lxritag,
12009 rxid, 1);
12010 lpfc_nlp_put(ndlp);
12011 }
12012
12013 /* Check if TXQ queue needs to be serviced */
12014 if (pring && !list_empty(&pring->txq))
12015 lpfc_worker_wake_up(phba);
12016 return;
12017 }
12018 }
12019 spin_unlock_irqrestore(&phba->sli4_hba.sgl_list_lock, iflag);
12020 lxri = lpfc_sli4_xri_inrange(phba, xri);
12021 if (lxri == NO_XRI)
12022 return;
12023
12024 spin_lock_irqsave(&phba->hbalock, iflag);
12025 sglq_entry = __lpfc_get_active_sglq(phba, lxri);
12026 if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
12027 spin_unlock_irqrestore(&phba->hbalock, iflag);
12028 return;
12029 }
12030 sglq_entry->state = SGL_XRI_ABORTED;
12031 spin_unlock_irqrestore(&phba->hbalock, iflag);
12032 return;
12033 }
12034
12035 /* lpfc_sli_abts_recover_port - Recover a port that failed a BLS_ABORT req.
12036 * @vport: pointer to virtual port object.
12037 * @ndlp: nodelist pointer for the impacted node.
12038 *
12039 * The driver calls this routine in response to an SLI4 XRI ABORT CQE
12040 * or an SLI3 ASYNC_STATUS_CN event from the port. For either event,
12041 * the driver is required to send a LOGO to the remote node before it
12042 * attempts to recover its login to the remote node.
12043 */
12044 void
lpfc_sli_abts_recover_port(struct lpfc_vport * vport,struct lpfc_nodelist * ndlp)12045 lpfc_sli_abts_recover_port(struct lpfc_vport *vport,
12046 struct lpfc_nodelist *ndlp)
12047 {
12048 struct Scsi_Host *shost;
12049 struct lpfc_hba *phba;
12050 unsigned long flags = 0;
12051
12052 shost = lpfc_shost_from_vport(vport);
12053 phba = vport->phba;
12054 if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) {
12055 lpfc_printf_log(phba, KERN_INFO,
12056 LOG_SLI, "3093 No rport recovery needed. "
12057 "rport in state 0x%x\n", ndlp->nlp_state);
12058 return;
12059 }
12060 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12061 "3094 Start rport recovery on shost id 0x%x "
12062 "fc_id 0x%06x vpi 0x%x rpi 0x%x state 0x%x "
12063 "flag 0x%lx\n",
12064 shost->host_no, ndlp->nlp_DID,
12065 vport->vpi, ndlp->nlp_rpi, ndlp->nlp_state,
12066 ndlp->nlp_flag);
12067 /*
12068 * The rport is not responding. Remove the FCP-2 flag to prevent
12069 * an ADISC in the follow-up recovery code.
12070 */
12071 spin_lock_irqsave(&ndlp->lock, flags);
12072 ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
12073 spin_unlock_irqrestore(&ndlp->lock, flags);
12074 set_bit(NLP_ISSUE_LOGO, &ndlp->nlp_flag);
12075 lpfc_unreg_rpi(vport, ndlp);
12076 }
12077
lpfc_init_cs_ctl_bitmap(struct lpfc_vport * vport)12078 static void lpfc_init_cs_ctl_bitmap(struct lpfc_vport *vport)
12079 {
12080 bitmap_zero(vport->vmid_priority_range, LPFC_VMID_MAX_PRIORITY_RANGE);
12081 }
12082
12083 static void
lpfc_vmid_set_cs_ctl_range(struct lpfc_vport * vport,u32 min,u32 max)12084 lpfc_vmid_set_cs_ctl_range(struct lpfc_vport *vport, u32 min, u32 max)
12085 {
12086 u32 i;
12087
12088 if ((min > max) || (max > LPFC_VMID_MAX_PRIORITY_RANGE))
12089 return;
12090
12091 for (i = min; i <= max; i++)
12092 set_bit(i, vport->vmid_priority_range);
12093 }
12094
lpfc_vmid_put_cs_ctl(struct lpfc_vport * vport,u32 ctcl_vmid)12095 static void lpfc_vmid_put_cs_ctl(struct lpfc_vport *vport, u32 ctcl_vmid)
12096 {
12097 set_bit(ctcl_vmid, vport->vmid_priority_range);
12098 }
12099
lpfc_vmid_get_cs_ctl(struct lpfc_vport * vport)12100 u32 lpfc_vmid_get_cs_ctl(struct lpfc_vport *vport)
12101 {
12102 u32 i;
12103
12104 i = find_first_bit(vport->vmid_priority_range,
12105 LPFC_VMID_MAX_PRIORITY_RANGE);
12106
12107 if (i == LPFC_VMID_MAX_PRIORITY_RANGE)
12108 return 0;
12109
12110 clear_bit(i, vport->vmid_priority_range);
12111 return i;
12112 }
12113
12114 #define MAX_PRIORITY_DESC 255
12115
12116 static void
lpfc_cmpl_els_qfpa(struct lpfc_hba * phba,struct lpfc_iocbq * cmdiocb,struct lpfc_iocbq * rspiocb)12117 lpfc_cmpl_els_qfpa(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
12118 struct lpfc_iocbq *rspiocb)
12119 {
12120 struct lpfc_vport *vport = cmdiocb->vport;
12121 struct priority_range_desc *desc;
12122 struct lpfc_dmabuf *prsp = NULL;
12123 struct lpfc_vmid_priority_range *vmid_range = NULL;
12124 u32 *data;
12125 struct lpfc_dmabuf *dmabuf = cmdiocb->cmd_dmabuf;
12126 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
12127 u32 ulp_word4 = get_job_word4(phba, rspiocb);
12128 u8 *pcmd, max_desc;
12129 u32 len, i;
12130 struct lpfc_nodelist *ndlp = cmdiocb->ndlp;
12131
12132 prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
12133 if (!prsp)
12134 goto out;
12135
12136 pcmd = prsp->virt;
12137 data = (u32 *)pcmd;
12138 if (data[0] == ELS_CMD_LS_RJT) {
12139 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12140 "3277 QFPA LS_RJT x%x x%x\n",
12141 data[0], data[1]);
12142 goto out;
12143 }
12144 if (ulp_status) {
12145 lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI,
12146 "6529 QFPA failed with status x%x x%x\n",
12147 ulp_status, ulp_word4);
12148 goto out;
12149 }
12150
12151 if (!vport->qfpa_res) {
12152 max_desc = FCELSSIZE / sizeof(*vport->qfpa_res);
12153 vport->qfpa_res = kcalloc(max_desc, sizeof(*vport->qfpa_res),
12154 GFP_KERNEL);
12155 if (!vport->qfpa_res)
12156 goto out;
12157 }
12158
12159 len = *((u32 *)(pcmd + 4));
12160 len = be32_to_cpu(len);
12161 memcpy(vport->qfpa_res, pcmd, len + 8);
12162 len = len / LPFC_PRIORITY_RANGE_DESC_SIZE;
12163
12164 desc = (struct priority_range_desc *)(pcmd + 8);
12165 vmid_range = vport->vmid_priority.vmid_range;
12166 if (!vmid_range) {
12167 vmid_range = kcalloc(MAX_PRIORITY_DESC, sizeof(*vmid_range),
12168 GFP_KERNEL);
12169 if (!vmid_range) {
12170 kfree(vport->qfpa_res);
12171 goto out;
12172 }
12173 vport->vmid_priority.vmid_range = vmid_range;
12174 }
12175 vport->vmid_priority.num_descriptors = len;
12176
12177 for (i = 0; i < len; i++, vmid_range++, desc++) {
12178 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
12179 "6539 vmid values low=%d, high=%d, qos=%d, "
12180 "local ve id=%d\n", desc->lo_range,
12181 desc->hi_range, desc->qos_priority,
12182 desc->local_ve_id);
12183
12184 vmid_range->low = desc->lo_range << 1;
12185 if (desc->local_ve_id == QFPA_ODD_ONLY)
12186 vmid_range->low++;
12187 if (desc->qos_priority)
12188 vport->vmid_flag |= LPFC_VMID_QOS_ENABLED;
12189 vmid_range->qos = desc->qos_priority;
12190
12191 vmid_range->high = desc->hi_range << 1;
12192 if ((desc->local_ve_id == QFPA_ODD_ONLY) ||
12193 (desc->local_ve_id == QFPA_EVEN_ODD))
12194 vmid_range->high++;
12195 }
12196 lpfc_init_cs_ctl_bitmap(vport);
12197 for (i = 0; i < vport->vmid_priority.num_descriptors; i++) {
12198 lpfc_vmid_set_cs_ctl_range(vport,
12199 vport->vmid_priority.vmid_range[i].low,
12200 vport->vmid_priority.vmid_range[i].high);
12201 }
12202
12203 vport->vmid_flag |= LPFC_VMID_QFPA_CMPL;
12204 out:
12205 lpfc_els_free_iocb(phba, cmdiocb);
12206 lpfc_nlp_put(ndlp);
12207 }
12208
lpfc_issue_els_qfpa(struct lpfc_vport * vport)12209 int lpfc_issue_els_qfpa(struct lpfc_vport *vport)
12210 {
12211 struct lpfc_hba *phba = vport->phba;
12212 struct lpfc_nodelist *ndlp;
12213 struct lpfc_iocbq *elsiocb;
12214 u8 *pcmd;
12215 int ret;
12216
12217 ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
12218 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12219 return -ENXIO;
12220
12221 elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_QFPA_SIZE, 2, ndlp,
12222 ndlp->nlp_DID, ELS_CMD_QFPA);
12223 if (!elsiocb)
12224 return -ENOMEM;
12225
12226 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
12227
12228 *((u32 *)(pcmd)) = ELS_CMD_QFPA;
12229 pcmd += 4;
12230
12231 elsiocb->cmd_cmpl = lpfc_cmpl_els_qfpa;
12232
12233 elsiocb->ndlp = lpfc_nlp_get(ndlp);
12234 if (!elsiocb->ndlp) {
12235 lpfc_els_free_iocb(vport->phba, elsiocb);
12236 return -ENXIO;
12237 }
12238
12239 ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 2);
12240 if (ret != IOCB_SUCCESS) {
12241 lpfc_els_free_iocb(phba, elsiocb);
12242 lpfc_nlp_put(ndlp);
12243 return -EIO;
12244 }
12245 vport->vmid_flag &= ~LPFC_VMID_QOS_ENABLED;
12246 return 0;
12247 }
12248
12249 int
lpfc_vmid_uvem(struct lpfc_vport * vport,struct lpfc_vmid * vmid,bool instantiated)12250 lpfc_vmid_uvem(struct lpfc_vport *vport,
12251 struct lpfc_vmid *vmid, bool instantiated)
12252 {
12253 struct lpfc_vem_id_desc *vem_id_desc;
12254 struct lpfc_nodelist *ndlp;
12255 struct lpfc_iocbq *elsiocb;
12256 struct instantiated_ve_desc *inst_desc;
12257 struct lpfc_vmid_context *vmid_context;
12258 u8 *pcmd;
12259 u32 *len;
12260 int ret = 0;
12261
12262 ndlp = lpfc_findnode_did(vport, Fabric_DID);
12263 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12264 return -ENXIO;
12265
12266 vmid_context = kmalloc(sizeof(*vmid_context), GFP_KERNEL);
12267 if (!vmid_context)
12268 return -ENOMEM;
12269 elsiocb = lpfc_prep_els_iocb(vport, 1, LPFC_UVEM_SIZE, 2,
12270 ndlp, Fabric_DID, ELS_CMD_UVEM);
12271 if (!elsiocb)
12272 goto out;
12273
12274 lpfc_printf_vlog(vport, KERN_DEBUG, LOG_ELS,
12275 "3427 Host vmid %s %d\n",
12276 vmid->host_vmid, instantiated);
12277 vmid_context->vmp = vmid;
12278 vmid_context->nlp = ndlp;
12279 vmid_context->instantiated = instantiated;
12280 elsiocb->vmid_tag.vmid_context = vmid_context;
12281 pcmd = (u8 *)elsiocb->cmd_dmabuf->virt;
12282
12283 if (!memchr_inv(vport->lpfc_vmid_host_uuid, 0,
12284 sizeof(vport->lpfc_vmid_host_uuid)))
12285 memcpy(vport->lpfc_vmid_host_uuid, vmid->host_vmid,
12286 sizeof(vport->lpfc_vmid_host_uuid));
12287
12288 *((u32 *)(pcmd)) = ELS_CMD_UVEM;
12289 len = (u32 *)(pcmd + 4);
12290 *len = cpu_to_be32(LPFC_UVEM_SIZE - 8);
12291
12292 vem_id_desc = (struct lpfc_vem_id_desc *)(pcmd + 8);
12293 vem_id_desc->tag = be32_to_cpu(VEM_ID_DESC_TAG);
12294 vem_id_desc->length = be32_to_cpu(LPFC_UVEM_VEM_ID_DESC_SIZE);
12295 memcpy(vem_id_desc->vem_id, vport->lpfc_vmid_host_uuid,
12296 sizeof(vem_id_desc->vem_id));
12297
12298 inst_desc = (struct instantiated_ve_desc *)(pcmd + 32);
12299 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
12300 inst_desc->length = be32_to_cpu(LPFC_UVEM_VE_MAP_DESC_SIZE);
12301 memcpy(inst_desc->global_vem_id, vmid->host_vmid,
12302 sizeof(inst_desc->global_vem_id));
12303
12304 bf_set(lpfc_instantiated_nport_id, inst_desc, vport->fc_myDID);
12305 bf_set(lpfc_instantiated_local_id, inst_desc,
12306 vmid->un.cs_ctl_vmid);
12307 if (instantiated) {
12308 inst_desc->tag = be32_to_cpu(INSTANTIATED_VE_DESC_TAG);
12309 } else {
12310 inst_desc->tag = be32_to_cpu(DEINSTANTIATED_VE_DESC_TAG);
12311 lpfc_vmid_put_cs_ctl(vport, vmid->un.cs_ctl_vmid);
12312 }
12313 inst_desc->word6 = cpu_to_be32(inst_desc->word6);
12314
12315 elsiocb->cmd_cmpl = lpfc_cmpl_els_uvem;
12316
12317 elsiocb->ndlp = lpfc_nlp_get(ndlp);
12318 if (!elsiocb->ndlp) {
12319 lpfc_els_free_iocb(vport->phba, elsiocb);
12320 goto out;
12321 }
12322
12323 ret = lpfc_sli_issue_iocb(vport->phba, LPFC_ELS_RING, elsiocb, 0);
12324 if (ret != IOCB_SUCCESS) {
12325 lpfc_els_free_iocb(vport->phba, elsiocb);
12326 lpfc_nlp_put(ndlp);
12327 goto out;
12328 }
12329
12330 return 0;
12331 out:
12332 kfree(vmid_context);
12333 return -EIO;
12334 }
12335
12336 static void
lpfc_cmpl_els_uvem(struct lpfc_hba * phba,struct lpfc_iocbq * icmdiocb,struct lpfc_iocbq * rspiocb)12337 lpfc_cmpl_els_uvem(struct lpfc_hba *phba, struct lpfc_iocbq *icmdiocb,
12338 struct lpfc_iocbq *rspiocb)
12339 {
12340 struct lpfc_vport *vport = icmdiocb->vport;
12341 struct lpfc_dmabuf *prsp = NULL;
12342 struct lpfc_vmid_context *vmid_context =
12343 icmdiocb->vmid_tag.vmid_context;
12344 struct lpfc_nodelist *ndlp = icmdiocb->ndlp;
12345 u8 *pcmd;
12346 u32 *data;
12347 u32 ulp_status = get_job_ulpstatus(phba, rspiocb);
12348 u32 ulp_word4 = get_job_word4(phba, rspiocb);
12349 struct lpfc_dmabuf *dmabuf = icmdiocb->cmd_dmabuf;
12350 struct lpfc_vmid *vmid;
12351
12352 vmid = vmid_context->vmp;
12353 if (!ndlp || ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)
12354 ndlp = NULL;
12355
12356 prsp = list_get_first(&dmabuf->list, struct lpfc_dmabuf, list);
12357 if (!prsp)
12358 goto out;
12359 pcmd = prsp->virt;
12360 data = (u32 *)pcmd;
12361 if (data[0] == ELS_CMD_LS_RJT) {
12362 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12363 "4532 UVEM LS_RJT %x %x\n", data[0], data[1]);
12364 goto out;
12365 }
12366 if (ulp_status) {
12367 lpfc_printf_vlog(vport, KERN_WARNING, LOG_SLI,
12368 "4533 UVEM error status %x: %x\n",
12369 ulp_status, ulp_word4);
12370 goto out;
12371 }
12372 spin_lock(&phba->hbalock);
12373 /* Set IN USE flag */
12374 vport->vmid_flag |= LPFC_VMID_IN_USE;
12375 phba->pport->vmid_flag |= LPFC_VMID_IN_USE;
12376 spin_unlock(&phba->hbalock);
12377
12378 if (vmid_context->instantiated) {
12379 write_lock(&vport->vmid_lock);
12380 vmid->flag |= LPFC_VMID_REGISTERED;
12381 vmid->flag &= ~LPFC_VMID_REQ_REGISTER;
12382 write_unlock(&vport->vmid_lock);
12383 }
12384
12385 out:
12386 kfree(vmid_context);
12387 lpfc_els_free_iocb(phba, icmdiocb);
12388 lpfc_nlp_put(ndlp);
12389 }
12390