lpfc_els.c 219.2 KB
Newer Older
已提交
1 2
/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
3
 * Fibre Channel Host Bus Adapters.                                *
4
 * Copyright (C) 2004-2009 Emulex.  All rights reserved.           *
5
 * EMULEX and SLI are trademarks of Emulex.                        *
已提交
6
 * www.emulex.com                                                  *
7
 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
已提交
8 9
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
10 11 12 13 14 15 16 17 18 19
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
已提交
20
 *******************************************************************/
21
/* See Fibre Channel protocol T11 FC-LS for details */
已提交
22 23
#include <linux/blkdev.h>
#include <linux/pci.h>
24
#include <linux/slab.h>
已提交
25 26
#include <linux/interrupt.h>

27
#include <scsi/scsi.h>
已提交
28 29 30 31
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>

32
#include "lpfc_hw4.h"
已提交
33 34
#include "lpfc_hw.h"
#include "lpfc_sli.h"
35
#include "lpfc_sli4.h"
36
#include "lpfc_nl.h"
已提交
37 38 39 40 41
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
42
#include "lpfc_vport.h"
J
James Smart 已提交
43
#include "lpfc_debugfs.h"
已提交
44 45 46

static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
			  struct lpfc_iocbq *);
47 48
static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
			struct lpfc_iocbq *);
A
Adrian Bunk 已提交
49 50 51 52 53
static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
				struct lpfc_nodelist *ndlp, uint8_t retry);
static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
				  struct lpfc_iocbq *iocb);
54

已提交
55 56
static int lpfc_max_els_tries = 3;

57
/**
58
 * lpfc_els_chk_latt - Check host link attention event for a vport
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine checks whether there is an outstanding host link
 * attention event during the discovery process with the @vport. It is done
 * by reading the HBA's Host Attention (HA) register. If there is any host
 * link attention events during this @vport's discovery process, the @vport
 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
 * be issued if the link state is not already in host link cleared state,
 * and a return code shall indicate whether the host link attention event
 * had happened.
 *
 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
 * state in LPFC_VPORT_READY, the request for checking host link attention
 * event will be ignored and a return code shall indicate no host link
 * attention event had happened.
 *
 * Return codes
 *   0 - no host link attention event happened
 *   1 - host link attention event happened
 **/
J
James Smart 已提交
79
int
J
James Smart 已提交
80
lpfc_els_chk_latt(struct lpfc_vport *vport)
已提交
81
{
J
James Smart 已提交
82 83
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
84 85
	uint32_t ha_copy;

J
James Smart 已提交
86
	if (vport->port_state >= LPFC_VPORT_READY ||
87 88
	    phba->link_state == LPFC_LINK_DOWN ||
	    phba->sli_rev > LPFC_SLI_REV3)
已提交
89 90 91 92 93 94 95 96 97
		return 0;

	/* Read the HBA Host Attention Register */
	ha_copy = readl(phba->HAregaddr);

	if (!(ha_copy & HA_LATT))
		return 0;

	/* Pending Link Event during Discovery */
98 99 100 101
	lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
			 "0237 Pending Link Event during "
			 "Discovery: State x%x\n",
			 phba->pport->port_state);
已提交
102 103 104 105 106 107 108

	/* CLEAR_LA should re-enable link attention events and
	 * we should then imediately take a LATT event. The
	 * LATT processing should call lpfc_linkdown() which
	 * will cleanup any left over in-progress discovery
	 * events.
	 */
J
James Smart 已提交
109 110 111
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_ABORT_DISCOVERY;
	spin_unlock_irq(shost->host_lock);
已提交
112

113
	if (phba->link_state != LPFC_CLEAR_LA)
114
		lpfc_issue_clear_la(phba, vport);
已提交
115

116
	return 1;
已提交
117 118
}

119
/**
120
 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146
 * @vport: pointer to a host virtual N_Port data structure.
 * @expectRsp: flag indicating whether response is expected.
 * @cmdSize: size of the ELS command.
 * @retry: number of retries to the command IOCB when it fails.
 * @ndlp: pointer to a node-list data structure.
 * @did: destination identifier.
 * @elscmd: the ELS command code.
 *
 * This routine is used for allocating a lpfc-IOCB data structure from
 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
 * passed into the routine for discovery state machine to issue an Extended
 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
 * and preparation routine that is used by all the discovery state machine
 * routines and the ELS command-specific fields will be later set up by
 * the individual discovery machine routines after calling this routine
 * allocating and preparing a generic IOCB data structure. It fills in the
 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
 * payload and response payload (if expected). The reference count on the
 * ndlp is incremented by 1 and the reference to the ndlp is put into
 * context1 of the IOCB data structure for this IOCB to hold the ndlp
 * reference for the command's callback function to access later.
 *
 * Return code
 *   Pointer to the newly allocated/prepared els iocb data structure
 *   NULL - when els iocb data structure allocation/preparation failed
 **/
147
struct lpfc_iocbq *
J
James Smart 已提交
148 149 150 151
lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
		   uint16_t cmdSize, uint8_t retry,
		   struct lpfc_nodelist *ndlp, uint32_t did,
		   uint32_t elscmd)
已提交
152
{
J
James Smart 已提交
153
	struct lpfc_hba  *phba = vport->phba;
154
	struct lpfc_iocbq *elsiocb;
已提交
155 156 157 158 159
	struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
	struct ulp_bde64 *bpl;
	IOCB_t *icmd;


J
James Smart 已提交
160 161
	if (!lpfc_is_link_up(phba))
		return NULL;
已提交
162 163

	/* Allocate buffer for  command iocb */
164
	elsiocb = lpfc_sli_get_iocbq(phba);
已提交
165 166 167

	if (elsiocb == NULL)
		return NULL;
168

169 170 171 172 173
	/*
	 * If this command is for fabric controller and HBA running
	 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
	 */
	if ((did == Fabric_DID) &&
174
		(phba->hba_flag & HBA_FIP_SUPPORT) &&
175 176 177
		((elscmd == ELS_CMD_FLOGI) ||
		 (elscmd == ELS_CMD_FDISC) ||
		 (elscmd == ELS_CMD_LOGO)))
178 179 180 181 182 183 184 185 186 187 188 189 190 191
		switch (elscmd) {
		case ELS_CMD_FLOGI:
		elsiocb->iocb_flag |= ((ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
					& LPFC_FIP_ELS_ID_MASK);
		break;
		case ELS_CMD_FDISC:
		elsiocb->iocb_flag |= ((ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
					& LPFC_FIP_ELS_ID_MASK);
		break;
		case ELS_CMD_LOGO:
		elsiocb->iocb_flag |= ((ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
					& LPFC_FIP_ELS_ID_MASK);
		break;
		}
192
	else
193
		elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
194

已提交
195 196 197 198
	icmd = &elsiocb->iocb;

	/* fill in BDEs for command */
	/* Allocate buffer for command payload */
199 200 201
	pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
	if (pcmd)
		pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
202 203
	if (!pcmd || !pcmd->virt)
		goto els_iocb_free_pcmb_exit;
已提交
204 205 206 207 208

	INIT_LIST_HEAD(&pcmd->list);

	/* Allocate buffer for response payload */
	if (expectRsp) {
209
		prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
已提交
210 211 212
		if (prsp)
			prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
						     &prsp->phys);
213 214
		if (!prsp || !prsp->virt)
			goto els_iocb_free_prsp_exit;
已提交
215
		INIT_LIST_HEAD(&prsp->list);
216
	} else
已提交
217 218 219
		prsp = NULL;

	/* Allocate buffer for Buffer ptr list */
220
	pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
已提交
221
	if (pbuflist)
222 223
		pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
						 &pbuflist->phys);
224 225
	if (!pbuflist || !pbuflist->virt)
		goto els_iocb_free_pbuf_exit;
已提交
226 227 228 229 230

	INIT_LIST_HEAD(&pbuflist->list);

	icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
	icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
231
	icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
J
James Smart 已提交
232
	icmd->un.elsreq64.remoteID = did;	/* DID */
已提交
233
	if (expectRsp) {
234
		icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
已提交
235
		icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
236
		icmd->ulpTimeout = phba->fc_ratov * 2;
已提交
237
	} else {
238
		icmd->un.elsreq64.bdl.bdeSize = sizeof(struct ulp_bde64);
已提交
239 240 241 242 243 244
		icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
	}
	icmd->ulpBdeCount = 1;
	icmd->ulpLe = 1;
	icmd->ulpClass = CLASS3;

245 246 247 248
	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
		icmd->un.elsreq64.myID = vport->fc_myDID;

		/* For ELS_REQUEST64_CR, use the VPI by default */
249
		icmd->ulpContext = vport->vpi + phba->vpi_base;
250
		icmd->ulpCt_h = 0;
251 252 253 254 255
		/* The CT field must be 0=INVALID_RPI for the ECHO cmd */
		if (elscmd == ELS_CMD_ECHO)
			icmd->ulpCt_l = 0; /* context = invalid RPI */
		else
			icmd->ulpCt_l = 1; /* context = VPI */
256 257
	}

已提交
258 259 260 261 262 263 264 265 266 267 268 269
	bpl = (struct ulp_bde64 *) pbuflist->virt;
	bpl->addrLow = le32_to_cpu(putPaddrLow(pcmd->phys));
	bpl->addrHigh = le32_to_cpu(putPaddrHigh(pcmd->phys));
	bpl->tus.f.bdeSize = cmdSize;
	bpl->tus.f.bdeFlags = 0;
	bpl->tus.w = le32_to_cpu(bpl->tus.w);

	if (expectRsp) {
		bpl++;
		bpl->addrLow = le32_to_cpu(putPaddrLow(prsp->phys));
		bpl->addrHigh = le32_to_cpu(putPaddrHigh(prsp->phys));
		bpl->tus.f.bdeSize = FCELSSIZE;
270
		bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
已提交
271 272 273
		bpl->tus.w = le32_to_cpu(bpl->tus.w);
	}

274
	/* prevent preparing iocb with NULL ndlp reference */
275
	elsiocb->context1 = lpfc_nlp_get(ndlp);
276 277
	if (!elsiocb->context1)
		goto els_iocb_free_pbuf_exit;
278 279
	elsiocb->context2 = pcmd;
	elsiocb->context3 = pbuflist;
已提交
280
	elsiocb->retry = retry;
J
James Smart 已提交
281
	elsiocb->vport = vport;
已提交
282 283 284 285 286 287 288
	elsiocb->drvrTimeout = (phba->fc_ratov << 1) + LPFC_DRVR_TIMEOUT;

	if (prsp) {
		list_add(&prsp->list, &pcmd->list);
	}
	if (expectRsp) {
		/* Xmit ELS command <elsCmd> to remote NPORT <did> */
289 290 291 292 293
		lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
				 "0116 Xmit ELS command x%x to remote "
				 "NPORT x%x I/O tag: x%x, port state: x%x\n",
				 elscmd, did, elsiocb->iotag,
				 vport->port_state);
已提交
294 295
	} else {
		/* Xmit ELS response <elsCmd> to remote NPORT <did> */
296 297 298 299 300
		lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
				 "0117 Xmit ELS response x%x to remote "
				 "NPORT x%x I/O tag: x%x, size: x%x\n",
				 elscmd, ndlp->nlp_DID, elsiocb->iotag,
				 cmdSize);
已提交
301
	}
302
	return elsiocb;
已提交
303

304
els_iocb_free_pbuf_exit:
305 306
	if (expectRsp)
		lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
307 308 309 310 311 312 313 314 315 316 317
	kfree(pbuflist);

els_iocb_free_prsp_exit:
	lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
	kfree(prsp);

els_iocb_free_pcmb_exit:
	kfree(pcmd);
	lpfc_sli_release_iocbq(phba, elsiocb);
	return NULL;
}
已提交
318

319
/**
320
 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
321 322 323 324 325 326 327 328 329 330 331 332 333 334
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues a fabric registration login for a @vport. An
 * active ndlp node with Fabric_DID must already exist for this @vport.
 * The routine invokes two mailbox commands to carry out fabric registration
 * login through the HBA firmware: the first mailbox command requests the
 * HBA to perform link configuration for the @vport; and the second mailbox
 * command requests the HBA to perform the actual fabric registration login
 * with the @vport.
 *
 * Return code
 *   0 - successfully issued fabric registration login for @vport
 *   -ENXIO -- failed to issue fabric registration login for @vport
 **/
335
int
336
lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
已提交
337
{
J
James Smart 已提交
338
	struct lpfc_hba  *phba = vport->phba;
已提交
339
	LPFC_MBOXQ_t *mbox;
340
	struct lpfc_dmabuf *mp;
341 342
	struct lpfc_nodelist *ndlp;
	struct serv_parm *sp;
已提交
343
	int rc;
344
	int err = 0;
已提交
345

346 347
	sp = &phba->fc_fabparam;
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
348
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
349
		err = 1;
350
		goto fail;
351
	}
352 353

	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
354 355
	if (!mbox) {
		err = 2;
356
		goto fail;
357
	}
358 359 360 361 362 363

	vport->port_state = LPFC_FABRIC_CFG_LINK;
	lpfc_config_link(phba, mbox);
	mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
	mbox->vport = vport;

364
	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
365 366
	if (rc == MBX_NOT_FINISHED) {
		err = 3;
367
		goto fail_free_mbox;
368
	}
369 370

	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
371 372
	if (!mbox) {
		err = 4;
373
		goto fail;
374
	}
375
	rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 0);
376 377
	if (rc) {
		err = 5;
378
		goto fail_free_mbox;
379
	}
380 381 382

	mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
	mbox->vport = vport;
383 384 385
	/* increment the reference count on ndlp to hold reference
	 * for the callback routine.
	 */
386 387
	mbox->context2 = lpfc_nlp_get(ndlp);

388
	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
389 390
	if (rc == MBX_NOT_FINISHED) {
		err = 6;
391
		goto fail_issue_reg_login;
392
	}
393 394 395 396

	return 0;

fail_issue_reg_login:
397 398 399
	/* decrement the reference count on ndlp just incremented
	 * for the failed mbox command.
	 */
400 401 402 403 404 405 406 407 408
	lpfc_nlp_put(ndlp);
	mp = (struct lpfc_dmabuf *) mbox->context1;
	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	kfree(mp);
fail_free_mbox:
	mempool_free(mbox, phba->mbox_mem_pool);

fail:
	lpfc_vport_set_state(vport, FC_VPORT_FAILED);
409
	lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
410
		"0249 Cannot issue Register Fabric login: Err %d\n", err);
411 412 413
	return -ENXIO;
}

414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482
/**
 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
 * the @vport. This mailbox command is necessary for FCoE only.
 *
 * Return code
 *   0 - successfully issued REG_VFI for @vport
 *   A failure code otherwise.
 **/
static int
lpfc_issue_reg_vfi(struct lpfc_vport *vport)
{
	struct lpfc_hba  *phba = vport->phba;
	LPFC_MBOXQ_t *mboxq;
	struct lpfc_nodelist *ndlp;
	struct serv_parm *sp;
	struct lpfc_dmabuf *dmabuf;
	int rc = 0;

	sp = &phba->fc_fabparam;
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
		rc = -ENODEV;
		goto fail;
	}

	dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
	if (!dmabuf) {
		rc = -ENOMEM;
		goto fail;
	}
	dmabuf->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &dmabuf->phys);
	if (!dmabuf->virt) {
		rc = -ENOMEM;
		goto fail_free_dmabuf;
	}
	mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!mboxq) {
		rc = -ENOMEM;
		goto fail_free_coherent;
	}
	vport->port_state = LPFC_FABRIC_CFG_LINK;
	memcpy(dmabuf->virt, &phba->fc_fabparam, sizeof(vport->fc_sparam));
	lpfc_reg_vfi(mboxq, vport, dmabuf->phys);
	mboxq->mbox_cmpl = lpfc_mbx_cmpl_reg_vfi;
	mboxq->vport = vport;
	mboxq->context1 = dmabuf;
	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
	if (rc == MBX_NOT_FINISHED) {
		rc = -ENXIO;
		goto fail_free_mbox;
	}
	return 0;

fail_free_mbox:
	mempool_free(mboxq, phba->mbox_mem_pool);
fail_free_coherent:
	lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
fail_free_dmabuf:
	kfree(dmabuf);
fail:
	lpfc_vport_set_state(vport, FC_VPORT_FAILED);
	lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
		"0289 Issue Register VFI failed: Err %d\n", rc);
	return rc;
}

483
/**
484
 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502
 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @sp: pointer to service parameter data structure.
 * @irsp: pointer to the IOCB within the lpfc response IOCB.
 *
 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
 * port in a fabric topology. It properly sets up the parameters to the @ndlp
 * from the IOCB response. It also check the newly assigned N_Port ID to the
 * @vport against the previously assigned N_Port ID. If it is different from
 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
 * is invoked on all the remaining nodes with the @vport to unregister the
 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
 * is invoked to register login to the fabric.
 *
 * Return code
 *   0 - Success (currently, always return 0)
 **/
503 504 505 506 507 508 509 510 511
static int
lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
			   struct serv_parm *sp, IOCB_t *irsp)
{
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
	struct lpfc_nodelist *np;
	struct lpfc_nodelist *next_np;

J
James Smart 已提交
512 513 514
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_FABRIC;
	spin_unlock_irq(shost->host_lock);
已提交
515 516 517 518 519 520 521 522

	phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
	if (sp->cmn.edtovResolution)	/* E_D_TOV ticks are in nanoseconds */
		phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;

	phba->fc_ratov = (be32_to_cpu(sp->cmn.w2.r_a_tov) + 999) / 1000;

	if (phba->fc_topology == TOPOLOGY_LOOP) {
J
James Smart 已提交
523 524 525
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PUBLIC_LOOP;
		spin_unlock_irq(shost->host_lock);
已提交
526 527 528 529 530
	} else {
		/*
		 * If we are a N-port connected to a Fabric, fixup sparam's so
		 * logins to devices on remote loops work.
		 */
J
James Smart 已提交
531
		vport->fc_sparam.cmn.altBbCredit = 1;
已提交
532 533
	}

J
James Smart 已提交
534
	vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
已提交
535
	memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
536
	memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
已提交
537 538 539 540 541 542 543 544 545 546 547 548 549
	ndlp->nlp_class_sup = 0;
	if (sp->cls1.classValid)
		ndlp->nlp_class_sup |= FC_COS_CLASS1;
	if (sp->cls2.classValid)
		ndlp->nlp_class_sup |= FC_COS_CLASS2;
	if (sp->cls3.classValid)
		ndlp->nlp_class_sup |= FC_COS_CLASS3;
	if (sp->cls4.classValid)
		ndlp->nlp_class_sup |= FC_COS_CLASS4;
	ndlp->nlp_maxframe = ((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) |
				sp->cmn.bbRcvSizeLsb;
	memcpy(&phba->fc_fabparam, sp, sizeof(struct serv_parm));

550 551
	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
		if (sp->cmn.response_multiple_NPort) {
552 553 554 555 556
			lpfc_printf_vlog(vport, KERN_WARNING,
					 LOG_ELS | LOG_VPORT,
					 "1816 FLOGI NPIV supported, "
					 "response data 0x%x\n",
					 sp->cmn.response_multiple_NPort);
557 558 559
			phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
		} else {
			/* Because we asked f/w for NPIV it still expects us
560 561 562 563 564
			to call reg_vnpid atleast for the physcial host */
			lpfc_printf_vlog(vport, KERN_WARNING,
					 LOG_ELS | LOG_VPORT,
					 "1817 Fabric does not support NPIV "
					 "- configuring single port mode.\n");
565 566 567
			phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
		}
	}
已提交
568

569 570
	if ((vport->fc_prevDID != vport->fc_myDID) &&
		!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
已提交
571

572 573 574 575 576
		/* If our NportID changed, we need to ensure all
		 * remaining NPORTs get unreg_login'ed.
		 */
		list_for_each_entry_safe(np, next_np,
					&vport->fc_nodes, nlp_listp) {
577
			if (!NLP_CHK_NODE_ACT(np))
578
				continue;
579 580 581 582 583 584 585 586 587 588
			if ((np->nlp_state != NLP_STE_NPR_NODE) ||
				   !(np->nlp_flag & NLP_NPR_ADISC))
				continue;
			spin_lock_irq(shost->host_lock);
			np->nlp_flag &= ~NLP_NPR_ADISC;
			spin_unlock_irq(shost->host_lock);
			lpfc_unreg_rpi(vport, np);
		}
		if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
			lpfc_mbx_unreg_vpi(vport);
589
			spin_lock_irq(shost->host_lock);
590
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
591
			spin_unlock_irq(shost->host_lock);
592
		}
593 594 595 596 597 598 599 600 601
		/*
		 * If VPI is unreged, driver need to do INIT_VPI
		 * before re-registering
		 */
		if (phba->sli_rev == LPFC_SLI_REV4) {
			spin_lock_irq(shost->host_lock);
			vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
			spin_unlock_irq(shost->host_lock);
		}
602
	}
已提交
603

604 605 606 607 608 609 610 611 612 613
	if (phba->sli_rev < LPFC_SLI_REV4) {
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
		if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
		    vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
			lpfc_register_new_vport(phba, vport, ndlp);
		else
			lpfc_issue_fabric_reglogin(vport);
	} else {
		ndlp->nlp_type |= NLP_FABRIC;
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
614 615
		if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
			(vport->vpi_state & LPFC_VPI_REGISTERED)) {
616 617
			lpfc_start_fdiscs(phba);
			lpfc_do_scr_ns_plogi(phba, vport);
618
		} else if (vport->fc_flag & FC_VFI_REGISTERED)
619
			lpfc_issue_init_vpi(vport);
620
		else
621
			lpfc_issue_reg_vfi(vport);
622
	}
已提交
623 624
	return 0;
}
625
/**
626
 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644
 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @sp: pointer to service parameter data structure.
 *
 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
 * in a point-to-point topology. First, the @vport's N_Port Name is compared
 * with the received N_Port Name: if the @vport's N_Port Name is greater than
 * the received N_Port Name lexicographically, this node shall assign local
 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
 * this node shall just wait for the remote node to issue PLOGI and assign
 * N_Port IDs.
 *
 * Return code
 *   0 - Success
 *   -ENXIO - Fail
 **/
已提交
645
static int
J
James Smart 已提交
646 647
lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
			  struct serv_parm *sp)
已提交
648
{
J
James Smart 已提交
649 650
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
651 652 653
	LPFC_MBOXQ_t *mbox;
	int rc;

J
James Smart 已提交
654 655 656
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
	spin_unlock_irq(shost->host_lock);
已提交
657 658 659

	phba->fc_edtov = FF_DEF_EDTOV;
	phba->fc_ratov = FF_DEF_RATOV;
J
James Smart 已提交
660
	rc = memcmp(&vport->fc_portname, &sp->portName,
661
		    sizeof(vport->fc_portname));
已提交
662 663
	if (rc >= 0) {
		/* This side will initiate the PLOGI */
J
James Smart 已提交
664 665 666
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PT2PT_PLOGI;
		spin_unlock_irq(shost->host_lock);
已提交
667 668 669 670 671 672 673 674

		/*
		 * N_Port ID cannot be 0, set our to LocalID the other
		 * side will be RemoteID.
		 */

		/* not equal */
		if (rc)
J
James Smart 已提交
675
			vport->fc_myDID = PT2PT_LocalID;
已提交
676 677 678 679 680 681 682 683

		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
		if (!mbox)
			goto fail;

		lpfc_config_link(phba, mbox);

		mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
684
		mbox->vport = vport;
685
		rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
已提交
686 687 688 689
		if (rc == MBX_NOT_FINISHED) {
			mempool_free(mbox, phba->mbox_mem_pool);
			goto fail;
		}
690 691 692
		/* Decrement ndlp reference count indicating that ndlp can be
		 * safely released when other references to it are done.
		 */
693
		lpfc_nlp_put(ndlp);
已提交
694

J
James Smart 已提交
695
		ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
已提交
696 697 698 699 700 701 702 703
		if (!ndlp) {
			/*
			 * Cannot find existing Fabric ndlp, so allocate a
			 * new one
			 */
			ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
			if (!ndlp)
				goto fail;
J
James Smart 已提交
704
			lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
705 706 707 708 709
		} else if (!NLP_CHK_NODE_ACT(ndlp)) {
			ndlp = lpfc_enable_node(vport, ndlp,
						NLP_STE_UNUSED_NODE);
			if(!ndlp)
				goto fail;
已提交
710 711 712
		}

		memcpy(&ndlp->nlp_portname, &sp->portName,
J
James Smart 已提交
713
		       sizeof(struct lpfc_name));
已提交
714
		memcpy(&ndlp->nlp_nodename, &sp->nodeName,
J
James Smart 已提交
715
		       sizeof(struct lpfc_name));
716
		/* Set state will put ndlp onto node list if not already done */
J
James Smart 已提交
717 718
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
		spin_lock_irq(shost->host_lock);
已提交
719
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
720
		spin_unlock_irq(shost->host_lock);
721 722 723 724 725
	} else
		/* This side will wait for the PLOGI, decrement ndlp reference
		 * count indicating that ndlp can be released when other
		 * references to it are done.
		 */
726
		lpfc_nlp_put(ndlp);
已提交
727

728 729 730
	/* If we are pt2pt with another NPort, force NPIV off! */
	phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;

J
James Smart 已提交
731 732 733
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_PT2PT;
	spin_unlock_irq(shost->host_lock);
已提交
734 735

	/* Start discovery - this should just do CLEAR_LA */
J
James Smart 已提交
736
	lpfc_disc_start(vport);
已提交
737
	return 0;
738
fail:
已提交
739 740 741
	return -ENXIO;
}

742
/**
743
 * lpfc_cmpl_els_flogi - Completion callback function for flogi
744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the top-level completion callback function for issuing
 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
 * retry has been made (either immediately or delayed with lpfc_els_retry()
 * returning 1), the command IOCB will be released and function returned.
 * If the retry attempt has been given up (possibly reach the maximum
 * number of retries), one additional decrement of ndlp reference shall be
 * invoked before going out after releasing the command IOCB. This will
 * actually release the remote node (Note, lpfc_els_free_iocb() will also
 * invoke one decrement of ndlp reference count). If no error reported in
 * the IOCB status, the command Port ID field is used to determine whether
 * this is a point-to-point topology or a fabric topology: if the Port ID
 * field is assigned, it is a fabric topology; otherwise, it is a
 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
 * specific topology completion conditions.
 **/
已提交
765
static void
766 767
lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
768
{
J
James Smart 已提交
769 770
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
771 772 773 774
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_nodelist *ndlp = cmdiocb->context1;
	struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
	struct serv_parm *sp;
775
	uint16_t fcf_index;
已提交
776 777 778
	int rc;

	/* Check to see if link went down during discovery */
J
James Smart 已提交
779
	if (lpfc_els_chk_latt(vport)) {
780 781 782
		/* One additional decrement on node reference count to
		 * trigger the release of the node
		 */
783
		lpfc_nlp_put(ndlp);
已提交
784 785 786
		goto out;
	}

J
James Smart 已提交
787 788 789 790 791
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"FLOGI cmpl:      status:x%x/x%x state:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		vport->port_state);

已提交
792
	if (irsp->ulpStatus) {
793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840
		/*
		 * In case of FIP mode, perform round robin FCF failover
		 * due to new FCF discovery
		 */
		if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
		    (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
			lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
					"2611 FLOGI failed on registered "
					"FCF record fcf_index:%d, trying "
					"to perform round robin failover\n",
					phba->fcf.current_rec.fcf_indx);
			fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
			if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
				/*
				 * Exhausted the eligible FCF record list,
				 * fail through to retry FLOGI on current
				 * FCF record.
				 */
				lpfc_printf_log(phba, KERN_WARNING,
						LOG_FIP | LOG_ELS,
						"2760 FLOGI exhausted FCF "
						"round robin failover list, "
						"retry FLOGI on the current "
						"registered FCF index:%d\n",
						phba->fcf.current_rec.fcf_indx);
				spin_lock_irq(&phba->hbalock);
				phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
				spin_unlock_irq(&phba->hbalock);
			} else {
				rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba,
								   fcf_index);
				if (rc) {
					lpfc_printf_log(phba, KERN_WARNING,
							LOG_FIP | LOG_ELS,
							"2761 FLOGI round "
							"robin FCF failover "
							"read FCF failed "
							"rc:x%x, fcf_index:"
							"%d\n", rc,
						phba->fcf.current_rec.fcf_indx);
					spin_lock_irq(&phba->hbalock);
					phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
					spin_unlock_irq(&phba->hbalock);
				} else
					goto out;
			}
		}

已提交
841
		/* Check for retry */
J
James Smart 已提交
842
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
843
			goto out;
J
James Smart 已提交
844

已提交
845
		/* FLOGI failed, so there is no fabric */
J
James Smart 已提交
846 847 848
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
		spin_unlock_irq(shost->host_lock);
已提交
849

850
		/* If private loop, then allow max outstanding els to be
已提交
851 852 853 854
		 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
		 * alpa map would take too long otherwise.
		 */
		if (phba->alpa_map[0] == 0) {
855
			vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
已提交
856 857 858
		}

		/* FLOGI failure */
859 860
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0100 FLOGI failure Status:x%x/x%x TMO:x%x\n",
861 862
				 irsp->ulpStatus, irsp->un.ulpWord[4],
				 irsp->ulpTimeout);
已提交
863 864
		goto flogifail;
	}
865 866
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
J
James Smart 已提交
867
	vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
868
	spin_unlock_irq(shost->host_lock);
已提交
869 870 871 872 873 874 875 876 877 878

	/*
	 * The FLogI succeeded.  Sync the data for the CPU before
	 * accessing it.
	 */
	prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);

	sp = prsp->virt + sizeof(uint32_t);

	/* FLOGI completes successfully */
879
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
880
			 "0101 FLOGI completes successfully "
881 882 883
			 "Data: x%x x%x x%x x%x\n",
			 irsp->un.ulpWord[4], sp->cmn.e_d_tov,
			 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
已提交
884

J
James Smart 已提交
885
	if (vport->port_state == LPFC_FLOGI) {
已提交
886 887 888 889 890
		/*
		 * If Common Service Parameters indicate Nport
		 * we are point to point, if Fport we are Fabric.
		 */
		if (sp->cmn.fPort)
J
James Smart 已提交
891
			rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
已提交
892
		else
J
James Smart 已提交
893
			rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
已提交
894

895 896
		if (!rc) {
			/* Mark the FCF discovery process done */
897 898 899 900 901 902 903 904
			if (phba->hba_flag & HBA_FIP_SUPPORT)
				lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
						LOG_ELS,
						"2769 FLOGI successful on FCF "
						"record: current_fcf_index:"
						"x%x, terminate FCF round "
						"robin failover process\n",
						phba->fcf.current_rec.fcf_indx);
905 906 907
			spin_lock_irq(&phba->hbalock);
			phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
			spin_unlock_irq(&phba->hbalock);
已提交
908
			goto out;
909
		}
已提交
910 911 912
	}

flogifail:
913
	lpfc_nlp_put(ndlp);
已提交
914

J
James Smart 已提交
915
	if (!lpfc_error_lost_link(irsp)) {
已提交
916
		/* FLOGI failed, so just use loop map to make discovery list */
J
James Smart 已提交
917
		lpfc_disc_list_loopmap(vport);
已提交
918 919

		/* Start discovery */
J
James Smart 已提交
920
		lpfc_disc_start(vport);
921 922 923 924 925 926
	} else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
			((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
			(irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) &&
			(phba->link_state != LPFC_CLEAR_LA)) {
		/* If FLOGI failed enable link interrupt. */
		lpfc_issue_clear_la(phba, vport);
已提交
927 928 929 930 931
	}
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

932
/**
933
 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953
 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a Fabric Login (FLOGI) Request ELS command
 * for a @vport. The initiator service parameters are put into the payload
 * of the FLOGI Request IOCB and the top-level callback function pointer
 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the FLOGI ELS command.
 *
 * Return code
 *   0 - successfully issued flogi iocb for @vport
 *   1 - failed to issue flogi iocb for @vport
 **/
已提交
954
static int
J
James Smart 已提交
955
lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
956 957
		     uint8_t retry)
{
J
James Smart 已提交
958
	struct lpfc_hba  *phba = vport->phba;
已提交
959 960 961 962 963 964 965 966 967 968 969
	struct serv_parm *sp;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	uint8_t *pcmd;
	uint16_t cmdsize;
	uint32_t tmo;
	int rc;

	pring = &phba->sli.ring[LPFC_ELS_RING];

970
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
J
James Smart 已提交
971 972
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_FLOGI);
973

974
	if (!elsiocb)
975
		return 1;
已提交
976 977 978 979 980 981

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	/* For FLOGI request, remainder of payload is service parameters */
	*((uint32_t *) (pcmd)) = ELS_CMD_FLOGI;
982 983
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
984 985 986 987 988 989 990 991 992 993 994 995 996
	sp = (struct serv_parm *) pcmd;

	/* Setup CSPs accordingly for Fabric */
	sp->cmn.e_d_tov = 0;
	sp->cmn.w2.r_a_tov = 0;
	sp->cls1.classValid = 0;
	sp->cls2.seqDelivery = 1;
	sp->cls3.seqDelivery = 1;
	if (sp->cmn.fcphLow < FC_PH3)
		sp->cmn.fcphLow = FC_PH3;
	if (sp->cmn.fcphHigh < FC_PH3)
		sp->cmn.fcphHigh = FC_PH3;

997 998 999 1000 1001 1002 1003
	if  (phba->sli_rev == LPFC_SLI_REV4) {
		elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
		elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
		/* FLOGI needs to be 3 for WQE FCFI */
		/* Set the fcfi to the fcfi we registered with */
		elsiocb->iocb.ulpContext = phba->fcf.fcfi;
	} else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
1004 1005 1006 1007 1008 1009
		sp->cmn.request_multiple_Nport = 1;
		/* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
		icmd->ulpCt_h = 1;
		icmd->ulpCt_l = 0;
	}

J
James Smart 已提交
1010 1011 1012 1013 1014
	if (phba->fc_topology != TOPOLOGY_LOOP) {
		icmd->un.elsreq64.myID = 0;
		icmd->un.elsreq64.fl = 1;
	}

已提交
1015 1016
	tmo = phba->fc_ratov;
	phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
J
James Smart 已提交
1017
	lpfc_set_disctmo(vport);
已提交
1018 1019 1020 1021
	phba->fc_ratov = tmo;

	phba->fc_stat.elsXmitFLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
J
James Smart 已提交
1022 1023 1024 1025 1026

	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FLOGI:     opt:x%x",
		phba->sli3_options, 0, 0);

1027
	rc = lpfc_issue_fabric_iocb(phba, elsiocb);
已提交
1028 1029
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
1030
		return 1;
已提交
1031
	}
1032
	return 0;
已提交
1033 1034
}

1035
/**
1036
 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1037 1038 1039 1040 1041 1042 1043 1044 1045 1046
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
 * list and issues an abort IOCB commond on each outstanding IOCB that
 * contains a active Fabric_DID ndlp. Note that this function is to issue
 * the abort IOCB command on all the outstanding IOCBs, thus when this
 * function returns, it does not guarantee all the IOCBs are actually aborted.
 *
 * Return code
D
Daniel Mack 已提交
1047
 *   0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1048
 **/
已提交
1049
int
J
James Smart 已提交
1050
lpfc_els_abort_flogi(struct lpfc_hba *phba)
已提交
1051 1052 1053 1054 1055 1056 1057 1058
{
	struct lpfc_sli_ring *pring;
	struct lpfc_iocbq *iocb, *next_iocb;
	struct lpfc_nodelist *ndlp;
	IOCB_t *icmd;

	/* Abort outstanding I/O on NPort <nlp_DID> */
	lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
1059 1060
			"0201 Abort outstanding I/O on NPort x%x\n",
			Fabric_DID);
已提交
1061 1062 1063 1064 1065 1066 1067

	pring = &phba->sli.ring[LPFC_ELS_RING];

	/*
	 * Check the txcmplq for an iocb that matches the nport the driver is
	 * searching for.
	 */
J
James Smart 已提交
1068
	spin_lock_irq(&phba->hbalock);
已提交
1069 1070
	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
		icmd = &iocb->iocb;
J
James Smart 已提交
1071 1072
		if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
		    icmd->un.elsreq64.bdl.ulpIoTag32) {
已提交
1073
			ndlp = (struct lpfc_nodelist *)(iocb->context1);
1074 1075
			if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
			    (ndlp->nlp_DID == Fabric_DID))
1076
				lpfc_sli_issue_abort_iotag(phba, pring, iocb);
已提交
1077 1078
		}
	}
J
James Smart 已提交
1079
	spin_unlock_irq(&phba->hbalock);
已提交
1080 1081 1082 1083

	return 0;
}

1084
/**
1085
 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues an initial Fabric Login (FLOGI) for the @vport
 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
 * @vport.
 *
 * Return code
 *   0 - failed to issue initial flogi for @vport
 *   1 - successfully issued initial flogi for @vport
 **/
已提交
1100
int
J
James Smart 已提交
1101
lpfc_initial_flogi(struct lpfc_vport *vport)
已提交
1102
{
J
James Smart 已提交
1103
	struct lpfc_hba *phba = vport->phba;
已提交
1104 1105
	struct lpfc_nodelist *ndlp;

1106 1107 1108
	vport->port_state = LPFC_FLOGI;
	lpfc_set_disctmo(vport);

1109
	/* First look for the Fabric ndlp */
J
James Smart 已提交
1110
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
1111
	if (!ndlp) {
已提交
1112
		/* Cannot find existing Fabric ndlp, so allocate a new one */
1113 1114 1115
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 0;
J
James Smart 已提交
1116
		lpfc_nlp_init(vport, ndlp, Fabric_DID);
1117 1118
		/* Set the node type */
		ndlp->nlp_type |= NLP_FABRIC;
1119 1120 1121 1122 1123 1124 1125
		/* Put ndlp onto node list */
		lpfc_enqueue_node(vport, ndlp);
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		/* re-setup ndlp without removing from node list */
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp)
			return 0;
已提交
1126
	}
1127

1128
	if (lpfc_issue_els_flogi(vport, ndlp, 0))
1129 1130 1131
		/* This decrement of reference count to node shall kick off
		 * the release of the node.
		 */
1132
		lpfc_nlp_put(ndlp);
1133

1134
	return 1;
已提交
1135 1136
}

1137
/**
1138
 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues an initial Fabric Discover (FDISC) for the @vport
 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
 * is then invoked with the @vport and the ndlp to perform the FDISC for the
 * @vport.
 *
 * Return code
 *   0 - failed to issue initial fdisc for @vport
 *   1 - successfully issued initial fdisc for @vport
 **/
1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166
int
lpfc_initial_fdisc(struct lpfc_vport *vport)
{
	struct lpfc_hba *phba = vport->phba;
	struct lpfc_nodelist *ndlp;

	/* First look for the Fabric ndlp */
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
	if (!ndlp) {
		/* Cannot find existing Fabric ndlp, so allocate a new one */
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 0;
		lpfc_nlp_init(vport, ndlp, Fabric_DID);
1167 1168 1169 1170 1171 1172 1173
		/* Put ndlp onto node list */
		lpfc_enqueue_node(vport, ndlp);
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		/* re-setup ndlp without removing from node list */
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp)
			return 0;
1174
	}
1175

1176
	if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1177 1178 1179
		/* decrement node reference count to trigger the release of
		 * the node.
		 */
1180
		lpfc_nlp_put(ndlp);
1181
		return 0;
1182 1183 1184
	}
	return 1;
}
1185

1186
/**
1187
 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1188 1189 1190 1191 1192 1193 1194 1195 1196
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine checks whether there are more remaining Port Logins
 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
 * to issue ELS PLOGIs up to the configured discover threads with the
 * @vport (@vport->cfg_discovery_threads). The function also decrement
 * the @vport's num_disc_node by 1 if it is not already 0.
 **/
1197
void
J
James Smart 已提交
1198
lpfc_more_plogi(struct lpfc_vport *vport)
已提交
1199 1200 1201
{
	int sentplogi;

J
James Smart 已提交
1202 1203
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1204 1205

	/* Continue discovery with <num_disc_nodes> PLOGIs to go */
1206 1207 1208 1209 1210
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0232 Continue discovery with %d PLOGIs to go "
			 "Data: x%x x%x x%x\n",
			 vport->num_disc_nodes, vport->fc_plogi_cnt,
			 vport->fc_flag, vport->port_state);
已提交
1211
	/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1212 1213 1214 1215
	if (vport->fc_flag & FC_NLP_MORE)
		/* go thru NPR nodes and issue any remaining ELS PLOGIs */
		sentplogi = lpfc_els_disc_plogi(vport);

已提交
1216 1217 1218
	return;
}

1219
/**
1220
 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
 * @phba: pointer to lpfc hba data structure.
 * @prsp: pointer to response IOCB payload.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
 * The following cases are considered N_Port confirmed:
 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
 * it does not have WWPN assigned either. If the WWPN is confirmed, the
 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
 * 1) if there is a node on vport list other than the @ndlp with the same
 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
 * on that node to release the RPI associated with the node; 2) if there is
 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
 * into, a new node shall be allocated (or activated). In either case, the
 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
 * be released and the new_ndlp shall be put on to the vport node list and
 * its pointer returned as the confirmed node.
 *
 * Note that before the @ndlp got "released", the keepDID from not-matching
 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
 * of the @ndlp. This is because the release of @ndlp is actually to put it
 * into an inactive state on the vport node list and the vport node list
 * management algorithm does not allow two node with a same DID.
 *
 * Return code
 *   pointer to the PLOGI N_Port @ndlp
 **/
1250
static struct lpfc_nodelist *
1251
lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1252 1253
			 struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
1254
	struct lpfc_vport    *vport = ndlp->vport;
1255
	struct lpfc_nodelist *new_ndlp;
1256 1257
	struct lpfc_rport_data *rdata;
	struct fc_rport *rport;
1258
	struct serv_parm *sp;
1259
	uint8_t  name[sizeof(struct lpfc_name)];
1260
	uint32_t rc, keepDID = 0;
1261

J
James Smart 已提交
1262 1263 1264 1265 1266 1267
	/* Fabric nodes can have the same WWPN so we don't bother searching
	 * by WWPN.  Just return the ndlp that was given to us.
	 */
	if (ndlp->nlp_type & NLP_FABRIC)
		return ndlp;

1268
	sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1269
	memset(name, 0, sizeof(struct lpfc_name));
1270

1271
	/* Now we find out if the NPort we are logging into, matches the WWPN
1272 1273
	 * we have for that ndlp. If not, we have some work to do.
	 */
J
James Smart 已提交
1274
	new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1275

1276
	if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1277 1278 1279
		return ndlp;

	if (!new_ndlp) {
J
James Smart 已提交
1280 1281
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
1282 1283
		if (!rc)
			return ndlp;
1284 1285 1286
		new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
		if (!new_ndlp)
			return ndlp;
J
James Smart 已提交
1287
		lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1288
	} else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1289 1290 1291 1292
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
		if (!rc)
			return ndlp;
1293 1294 1295 1296
		new_ndlp = lpfc_enable_node(vport, new_ndlp,
						NLP_STE_UNUSED_NODE);
		if (!new_ndlp)
			return ndlp;
1297 1298 1299
		keepDID = new_ndlp->nlp_DID;
	} else
		keepDID = new_ndlp->nlp_DID;
1300

J
James Smart 已提交
1301
	lpfc_unreg_rpi(vport, new_ndlp);
1302
	new_ndlp->nlp_DID = ndlp->nlp_DID;
1303
	new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1304 1305 1306 1307 1308

	if (ndlp->nlp_flag & NLP_NPR_2B_DISC)
		new_ndlp->nlp_flag |= NLP_NPR_2B_DISC;
	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;

1309
	/* Set state will put new_ndlp on to node list if not already done */
J
James Smart 已提交
1310
	lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1311

J
James Smart 已提交
1312
	/* Move this back to NPR state */
1313 1314 1315 1316
	if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
		/* The new_ndlp is replacing ndlp totally, so we need
		 * to put ndlp on UNUSED list and try to free it.
		 */
1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329

		/* Fix up the rport accordingly */
		rport =  ndlp->rport;
		if (rport) {
			rdata = rport->dd_data;
			if (rdata->pnode == ndlp) {
				lpfc_nlp_put(ndlp);
				ndlp->rport = NULL;
				rdata->pnode = lpfc_nlp_get(new_ndlp);
				new_ndlp->rport = rport;
			}
			new_ndlp->nlp_type = ndlp->nlp_type;
		}
1330 1331 1332 1333 1334 1335 1336 1337 1338
		/* We shall actually free the ndlp with both nlp_DID and
		 * nlp_portname fields equals 0 to avoid any ndlp on the
		 * nodelist never to be used.
		 */
		if (ndlp->nlp_DID == 0) {
			spin_lock_irq(&phba->ndlp_lock);
			NLP_SET_FREE_REQ(ndlp);
			spin_unlock_irq(&phba->ndlp_lock);
		}
1339

1340 1341
		/* Two ndlps cannot have the same did on the nodelist */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1342
		lpfc_drop_node(vport, ndlp);
1343
	}
1344
	else {
J
James Smart 已提交
1345
		lpfc_unreg_rpi(vport, ndlp);
1346 1347
		/* Two ndlps cannot have the same did */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1348
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1349
	}
1350 1351 1352
	return new_ndlp;
}

1353
/**
1354
 * lpfc_end_rscn - Check and handle more rscn for a vport
1355 1356 1357 1358 1359 1360 1361 1362 1363
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine checks whether more Registration State Change
 * Notifications (RSCNs) came in while the discovery state machine was in
 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
 * handling the RSCNs.
 **/
1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384
void
lpfc_end_rscn(struct lpfc_vport *vport)
{
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

	if (vport->fc_flag & FC_RSCN_MODE) {
		/*
		 * Check to see if more RSCNs came in while we were
		 * processing this one.
		 */
		if (vport->fc_rscn_id_cnt ||
		    (vport->fc_flag & FC_RSCN_DISCOVERY) != 0)
			lpfc_els_handle_rscn(vport);
		else {
			spin_lock_irq(shost->host_lock);
			vport->fc_flag &= ~FC_RSCN_MODE;
			spin_unlock_irq(shost->host_lock);
		}
	}
}

1385
/**
1386
 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function for issuing the Port
 * Login (PLOGI) command. For PLOGI completion, there must be an active
 * ndlp on the vport node list that matches the remote node ID from the
 * PLOGI reponse IOCB. If such ndlp does not exist, the PLOGI is simply
 * ignored and command IOCB released. The PLOGI response IOCB status is
 * checked for error conditons. If there is error status reported, PLOGI
 * retry shall be attempted by invoking the lpfc_els_retry() routine.
 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
 * (DSM) is set for this PLOGI completion. Finally, it checks whether
 * there are additional N_Port nodes with the vport that need to perform
 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
 * PLOGIs.
 **/
已提交
1405
static void
J
James Smart 已提交
1406 1407
lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1408
{
J
James Smart 已提交
1409 1410
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1411 1412
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
1413
	struct lpfc_dmabuf *prsp;
已提交
1414 1415 1416 1417 1418 1419
	int disc, rc, did, type;

	/* we pass cmdiocb to state machine which needs rspiocb as well */
	cmdiocb->context_un.rsp_iocb = rspiocb;

	irsp = &rspiocb->iocb;
J
James Smart 已提交
1420 1421 1422 1423 1424
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"PLOGI cmpl:      status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		irsp->un.elsreq64.remoteID);

J
James Smart 已提交
1425
	ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1426
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1427 1428 1429 1430 1431 1432
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0136 PLOGI completes to NPort x%x "
				 "with no ndlp. Data: x%x x%x x%x\n",
				 irsp->un.elsreq64.remoteID,
				 irsp->ulpStatus, irsp->un.ulpWord[4],
				 irsp->ulpIoTag);
1433
		goto out;
1434
	}
已提交
1435 1436 1437 1438

	/* Since ndlp can be freed in the disc state machine, note if this node
	 * is being used during discovery.
	 */
J
James Smart 已提交
1439
	spin_lock_irq(shost->host_lock);
已提交
1440
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1441
	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
1442
	spin_unlock_irq(shost->host_lock);
已提交
1443 1444 1445
	rc   = 0;

	/* PLOGI completes to NPort <nlp_DID> */
1446 1447 1448 1449 1450
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0102 PLOGI completes to NPort x%x "
			 "Data: x%x x%x x%x x%x x%x\n",
			 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
			 irsp->ulpTimeout, disc, vport->num_disc_nodes);
已提交
1451
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1452 1453
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1454
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1455
		spin_unlock_irq(shost->host_lock);
已提交
1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467
		goto out;
	}

	/* ndlp could be freed in DSM, save these values now */
	type = ndlp->nlp_type;
	did = ndlp->nlp_DID;

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			if (disc) {
J
James Smart 已提交
1468
				spin_lock_irq(shost->host_lock);
已提交
1469
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1470
				spin_unlock_irq(shost->host_lock);
已提交
1471 1472 1473 1474
			}
			goto out;
		}
		/* PLOGI failed */
1475 1476 1477 1478
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
1479
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1480
		if (lpfc_error_lost_link(irsp))
1481
			rc = NLP_STE_FREED_NODE;
1482
		else
J
James Smart 已提交
1483
			rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1484
						     NLP_EVT_CMPL_PLOGI);
已提交
1485 1486
	} else {
		/* Good status, call state machine */
1487
		prsp = list_entry(((struct lpfc_dmabuf *)
1488 1489 1490
				   cmdiocb->context2)->list.next,
				  struct lpfc_dmabuf, list);
		ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
J
James Smart 已提交
1491
		rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1492
					     NLP_EVT_CMPL_PLOGI);
已提交
1493 1494
	}

J
James Smart 已提交
1495
	if (disc && vport->num_disc_nodes) {
已提交
1496
		/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1497
		lpfc_more_plogi(vport);
已提交
1498

J
James Smart 已提交
1499 1500 1501 1502
		if (vport->num_disc_nodes == 0) {
			spin_lock_irq(shost->host_lock);
			vport->fc_flag &= ~FC_NDISC_ACTIVE;
			spin_unlock_irq(shost->host_lock);
已提交
1503

J
James Smart 已提交
1504
			lpfc_can_disctmo(vport);
1505
			lpfc_end_rscn(vport);
已提交
1506 1507 1508 1509 1510 1511 1512 1513
		}
	}

out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1514
/**
1515
 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534
 * @vport: pointer to a host virtual N_Port data structure.
 * @did: destination port identifier.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a Port Login (PLOGI) command to a remote N_Port
 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
 * This routine constructs the proper feilds of the PLOGI IOCB and invokes
 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the PLOGI ELS command.
 *
 * Return code
 *   0 - Successfully issued a plogi for @vport
 *   1 - failed to issue a plogi for @vport
 **/
已提交
1535
int
J
James Smart 已提交
1536
lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
已提交
1537
{
J
James Smart 已提交
1538
	struct lpfc_hba  *phba = vport->phba;
已提交
1539 1540
	struct serv_parm *sp;
	IOCB_t *icmd;
1541
	struct lpfc_nodelist *ndlp;
已提交
1542 1543 1544 1545
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
1546
	int ret;
已提交
1547 1548 1549

	psli = &phba->sli;

1550
	ndlp = lpfc_findnode_did(vport, did);
1551 1552
	if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
		ndlp = NULL;
1553

1554
	/* If ndlp is not NULL, we will bump the reference count on it */
1555
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1556
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
J
James Smart 已提交
1557
				     ELS_CMD_PLOGI);
1558 1559
	if (!elsiocb)
		return 1;
已提交
1560 1561 1562 1563 1564 1565

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	/* For PLOGI request, remainder of payload is service parameters */
	*((uint32_t *) (pcmd)) = ELS_CMD_PLOGI;
1566 1567
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
1568 1569 1570 1571 1572 1573 1574 1575
	sp = (struct serv_parm *) pcmd;

	if (sp->cmn.fcphLow < FC_PH_4_3)
		sp->cmn.fcphLow = FC_PH_4_3;

	if (sp->cmn.fcphHigh < FC_PH3)
		sp->cmn.fcphHigh = FC_PH3;

J
James Smart 已提交
1576 1577 1578 1579
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PLOGI:     did:x%x",
		did, 0, 0);

已提交
1580 1581
	phba->fc_stat.elsXmitPLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1582
	ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1583 1584

	if (ret == IOCB_ERROR) {
已提交
1585
		lpfc_els_free_iocb(phba, elsiocb);
1586
		return 1;
已提交
1587
	}
1588
	return 0;
已提交
1589 1590
}

1591
/**
1592
 * lpfc_cmpl_els_prli - Completion callback function for prli
1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function for a Process Login
 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
 * status. If there is error status reported, PRLI retry shall be attempted
 * by invoking the lpfc_els_retry() routine. Otherwise, the state
 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
 * ndlp to mark the PRLI completion.
 **/
已提交
1604
static void
J
James Smart 已提交
1605 1606
lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
1607
{
J
James Smart 已提交
1608 1609
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1610 1611 1612 1613 1614 1615 1616 1617 1618 1619
	IOCB_t *irsp;
	struct lpfc_sli *psli;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
	/* we pass cmdiocb to state machine which needs rspiocb as well */
	cmdiocb->context_un.rsp_iocb = rspiocb;

	irsp = &(rspiocb->iocb);
	ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
J
James Smart 已提交
1620
	spin_lock_irq(shost->host_lock);
已提交
1621
	ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1622
	spin_unlock_irq(shost->host_lock);
已提交
1623

J
James Smart 已提交
1624 1625 1626 1627
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"PRLI cmpl:       status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		ndlp->nlp_DID);
已提交
1628
	/* PRLI completes to NPort <nlp_DID> */
1629 1630 1631 1632 1633
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0103 PRLI completes to NPort x%x "
			 "Data: x%x x%x x%x x%x\n",
			 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
			 irsp->ulpTimeout, vport->num_disc_nodes);
已提交
1634

J
James Smart 已提交
1635
	vport->fc_prli_sent--;
已提交
1636
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1637
	if (lpfc_els_chk_latt(vport))
已提交
1638 1639 1640 1641 1642 1643 1644 1645 1646
		goto out;

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			goto out;
		}
		/* PRLI failed */
1647 1648 1649 1650
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "2754 PRLI failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
1651
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1652
		if (lpfc_error_lost_link(irsp))
已提交
1653
			goto out;
1654
		else
J
James Smart 已提交
1655
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1656
						NLP_EVT_CMPL_PRLI);
1657
	} else
已提交
1658
		/* Good status, call state machine */
J
James Smart 已提交
1659
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1660
					NLP_EVT_CMPL_PRLI);
已提交
1661 1662 1663 1664 1665
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1666
/**
1667
 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686
 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a Process Login (PRLI) ELS command for the
 * @vport. The PRLI service parameters are set up in the payload of the
 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
 * is put to the IOCB completion callback func field before invoking the
 * routine lpfc_sli_issue_iocb() to send out PRLI command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the PRLI ELS command.
 *
 * Return code
 *   0 - successfully issued prli iocb command for @vport
 *   1 - failed to issue prli iocb command for @vport
 **/
已提交
1687
int
J
James Smart 已提交
1688
lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1689 1690
		    uint8_t retry)
{
J
James Smart 已提交
1691 1692
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba *phba = vport->phba;
已提交
1693 1694 1695 1696 1697 1698
	PRLI *npr;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

1699
	cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
J
James Smart 已提交
1700 1701
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_PRLI);
1702
	if (!elsiocb)
1703
		return 1;
已提交
1704 1705 1706 1707 1708

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	/* For PRLI request, remainder of payload is service parameters */
1709
	memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
已提交
1710
	*((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
1711
	pcmd += sizeof(uint32_t);
已提交
1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730

	/* For PRLI, remainder of payload is PRLI parameter page */
	npr = (PRLI *) pcmd;
	/*
	 * If our firmware version is 3.20 or later,
	 * set the following bits for FC-TAPE support.
	 */
	if (phba->vpd.rev.feaLevelHigh >= 0x02) {
		npr->ConfmComplAllowed = 1;
		npr->Retry = 1;
		npr->TaskRetryIdReq = 1;
	}
	npr->estabImagePair = 1;
	npr->readXferRdyDis = 1;

	/* For FCP support */
	npr->prliType = PRLI_FCP_TYPE;
	npr->initiatorFunc = 1;

J
James Smart 已提交
1731 1732 1733 1734
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PRLI:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
1735 1736
	phba->fc_stat.elsXmitPRLI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
J
James Smart 已提交
1737
	spin_lock_irq(shost->host_lock);
已提交
1738
	ndlp->nlp_flag |= NLP_PRLI_SND;
J
James Smart 已提交
1739
	spin_unlock_irq(shost->host_lock);
1740 1741
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
J
James Smart 已提交
1742
		spin_lock_irq(shost->host_lock);
已提交
1743
		ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1744
		spin_unlock_irq(shost->host_lock);
已提交
1745
		lpfc_els_free_iocb(phba, elsiocb);
1746
		return 1;
已提交
1747
	}
J
James Smart 已提交
1748
	vport->fc_prli_sent++;
1749
	return 0;
已提交
1750 1751
}

1752
/**
1753
 * lpfc_rscn_disc - Perform rscn discovery for a vport
1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine performs Registration State Change Notification (RSCN)
 * discovery for a @vport. If the @vport's node port recovery count is not
 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
 * the nodes that need recovery. If none of the PLOGI were needed through
 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
 * invoked to check and handle possible more RSCN came in during the period
 * of processing the current ones.
 **/
static void
lpfc_rscn_disc(struct lpfc_vport *vport)
{
	lpfc_can_disctmo(vport);

	/* RSCN discovery */
	/* go thru NPR nodes and issue ELS PLOGIs */
	if (vport->fc_npr_cnt)
		if (lpfc_els_disc_plogi(vport))
			return;

	lpfc_end_rscn(vport);
}

/**
1779
 * lpfc_adisc_done - Complete the adisc phase of discovery
1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798
 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
 *
 * This function is called when the final ADISC is completed during discovery.
 * This function handles clearing link attention or issuing reg_vpi depending
 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
 * discovery.
 * This function is called with no locks held.
 **/
static void
lpfc_adisc_done(struct lpfc_vport *vport)
{
	struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba   *phba = vport->phba;

	/*
	 * For NPIV, cmpl_reg_vpi will set port_state to READY,
	 * and continue discovery.
	 */
	if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1799 1800
	    !(vport->fc_flag & FC_RSCN_MODE) &&
	    (phba->sli_rev < LPFC_SLI_REV4)) {
1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829
		lpfc_issue_reg_vpi(phba, vport);
		return;
	}
	/*
	* For SLI2, we need to set port_state to READY
	* and continue discovery.
	*/
	if (vport->port_state < LPFC_VPORT_READY) {
		/* If we get here, there is nothing to ADISC */
		if (vport->port_type == LPFC_PHYSICAL_PORT)
			lpfc_issue_clear_la(phba, vport);
		if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
			vport->num_disc_nodes = 0;
			/* go thru NPR list, issue ELS PLOGIs */
			if (vport->fc_npr_cnt)
				lpfc_els_disc_plogi(vport);
			if (!vport->num_disc_nodes) {
				spin_lock_irq(shost->host_lock);
				vport->fc_flag &= ~FC_NDISC_ACTIVE;
				spin_unlock_irq(shost->host_lock);
				lpfc_can_disctmo(vport);
				lpfc_end_rscn(vport);
			}
		}
		vport->port_state = LPFC_VPORT_READY;
	} else
		lpfc_rscn_disc(vport);
}

1830
/**
1831
 * lpfc_more_adisc - Issue more adisc as needed
1832 1833 1834 1835 1836 1837 1838
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine determines whether there are more ndlps on a @vport
 * node list need to have Address Discover (ADISC) issued. If so, it will
 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
 * remaining nodes which need to have ADISC sent.
 **/
1839
void
J
James Smart 已提交
1840
lpfc_more_adisc(struct lpfc_vport *vport)
已提交
1841 1842 1843
{
	int sentadisc;

J
James Smart 已提交
1844 1845
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1846
	/* Continue discovery with <num_disc_nodes> ADISCs to go */
1847 1848 1849 1850 1851
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0210 Continue discovery with %d ADISCs to go "
			 "Data: x%x x%x x%x\n",
			 vport->num_disc_nodes, vport->fc_adisc_cnt,
			 vport->fc_flag, vport->port_state);
已提交
1852
	/* Check to see if there are more ADISCs to be sent */
J
James Smart 已提交
1853 1854 1855 1856
	if (vport->fc_flag & FC_NLP_MORE) {
		lpfc_set_disctmo(vport);
		/* go thru NPR nodes and issue any remaining ELS ADISCs */
		sentadisc = lpfc_els_disc_adisc(vport);
已提交
1857
	}
1858 1859
	if (!vport->num_disc_nodes)
		lpfc_adisc_done(vport);
已提交
1860 1861 1862
	return;
}

1863
/**
1864
 * lpfc_cmpl_els_adisc - Completion callback function for adisc
1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion function for issuing the Address Discover
 * (ADISC) command. It first checks to see whether link went down during
 * the discovery process. If so, the node will be marked as node port
 * recovery for issuing discover IOCB by the link attention handler and
 * exit. Otherwise, the response status is checked. If error was reported
 * in the response status, the ADISC command shall be retried by invoking
 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
 * the response status, the state machine is invoked to set transition
 * with respect to NLP_EVT_CMPL_ADISC event.
 **/
已提交
1879
static void
J
James Smart 已提交
1880 1881
lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1882
{
J
James Smart 已提交
1883 1884
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1885 1886
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
1887
	int  disc;
已提交
1888 1889 1890 1891 1892 1893 1894

	/* we pass cmdiocb to state machine which needs rspiocb as well */
	cmdiocb->context_un.rsp_iocb = rspiocb;

	irsp = &(rspiocb->iocb);
	ndlp = (struct lpfc_nodelist *) cmdiocb->context1;

J
James Smart 已提交
1895 1896 1897 1898 1899
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"ADISC cmpl:      status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		ndlp->nlp_DID);

已提交
1900 1901 1902
	/* Since ndlp can be freed in the disc state machine, note if this node
	 * is being used during discovery.
	 */
J
James Smart 已提交
1903
	spin_lock_irq(shost->host_lock);
已提交
1904
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1905
	ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
J
James Smart 已提交
1906
	spin_unlock_irq(shost->host_lock);
已提交
1907
	/* ADISC completes to NPort <nlp_DID> */
1908 1909 1910 1911 1912
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0104 ADISC completes to NPort x%x "
			 "Data: x%x x%x x%x x%x x%x\n",
			 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
			 irsp->ulpTimeout, disc, vport->num_disc_nodes);
已提交
1913
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1914 1915
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1916
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1917
		spin_unlock_irq(shost->host_lock);
已提交
1918 1919 1920 1921 1922 1923 1924 1925
		goto out;
	}

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			if (disc) {
J
James Smart 已提交
1926
				spin_lock_irq(shost->host_lock);
已提交
1927
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1928 1929
				spin_unlock_irq(shost->host_lock);
				lpfc_set_disctmo(vport);
已提交
1930 1931 1932 1933
			}
			goto out;
		}
		/* ADISC failed */
1934 1935 1936 1937
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
1938
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1939
		if (!lpfc_error_lost_link(irsp))
J
James Smart 已提交
1940
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
J
James Smart 已提交
1941
						NLP_EVT_CMPL_ADISC);
1942
	} else
已提交
1943
		/* Good status, call state machine */
J
James Smart 已提交
1944
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
已提交
1945 1946
					NLP_EVT_CMPL_ADISC);

1947 1948
	/* Check to see if there are more ADISCs to be sent */
	if (disc && vport->num_disc_nodes)
J
James Smart 已提交
1949
		lpfc_more_adisc(vport);
已提交
1950 1951 1952 1953 1954
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1955
/**
1956
 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974
 * @vport: pointer to a virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues an Address Discover (ADISC) for an @ndlp on a
 * @vport. It prepares the payload of the ADISC ELS command, updates the
 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
 * to issue the ADISC ELS command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the ADISC ELS command.
 *
 * Return code
 *   0 - successfully issued adisc
 *   1 - failed to issue adisc
 **/
已提交
1975
int
J
James Smart 已提交
1976
lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1977 1978
		     uint8_t retry)
{
J
James Smart 已提交
1979 1980
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
1981 1982 1983 1984 1985 1986
	ADISC *ap;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

1987
	cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
J
James Smart 已提交
1988 1989
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ADISC);
1990
	if (!elsiocb)
1991
		return 1;
已提交
1992 1993 1994 1995 1996 1997

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	/* For ADISC request, remainder of payload is service parameters */
	*((uint32_t *) (pcmd)) = ELS_CMD_ADISC;
1998
	pcmd += sizeof(uint32_t);
已提交
1999 2000 2001 2002

	/* Fill in ADISC payload */
	ap = (ADISC *) pcmd;
	ap->hardAL_PA = phba->fc_pref_ALPA;
2003 2004
	memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
	memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
J
James Smart 已提交
2005
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
2006

J
James Smart 已提交
2007 2008 2009 2010
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue ADISC:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2011 2012
	phba->fc_stat.elsXmitADISC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
J
James Smart 已提交
2013
	spin_lock_irq(shost->host_lock);
已提交
2014
	ndlp->nlp_flag |= NLP_ADISC_SND;
J
James Smart 已提交
2015
	spin_unlock_irq(shost->host_lock);
2016 2017
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
J
James Smart 已提交
2018
		spin_lock_irq(shost->host_lock);
已提交
2019
		ndlp->nlp_flag &= ~NLP_ADISC_SND;
J
James Smart 已提交
2020
		spin_unlock_irq(shost->host_lock);
已提交
2021
		lpfc_els_free_iocb(phba, elsiocb);
2022
		return 1;
已提交
2023
	}
2024
	return 0;
已提交
2025 2026
}

2027
/**
2028
 * lpfc_cmpl_els_logo - Completion callback function for logo
2029 2030 2031 2032 2033 2034 2035 2036 2037 2038
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion function for issuing the ELS Logout (LOGO)
 * command. If no error status was reported from the LOGO response, the
 * state machine of the associated ndlp shall be invoked for transition with
 * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported,
 * the lpfc_els_retry() routine will be invoked to retry the LOGO command.
 **/
已提交
2039
static void
J
James Smart 已提交
2040 2041
lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
2042
{
J
James Smart 已提交
2043 2044 2045
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_vport *vport = ndlp->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
2046 2047 2048 2049 2050 2051 2052 2053
	IOCB_t *irsp;
	struct lpfc_sli *psli;

	psli = &phba->sli;
	/* we pass cmdiocb to state machine which needs rspiocb as well */
	cmdiocb->context_un.rsp_iocb = rspiocb;

	irsp = &(rspiocb->iocb);
J
James Smart 已提交
2054
	spin_lock_irq(shost->host_lock);
已提交
2055
	ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
2056
	spin_unlock_irq(shost->host_lock);
已提交
2057

J
James Smart 已提交
2058 2059 2060 2061
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"LOGO cmpl:       status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		ndlp->nlp_DID);
已提交
2062
	/* LOGO completes to NPort <nlp_DID> */
2063 2064 2065 2066 2067
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0105 LOGO completes to NPort x%x "
			 "Data: x%x x%x x%x x%x\n",
			 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
			 irsp->ulpTimeout, vport->num_disc_nodes);
已提交
2068
	/* Check to see if link went down during discovery */
J
James Smart 已提交
2069
	if (lpfc_els_chk_latt(vport))
已提交
2070 2071
		goto out;

2072 2073 2074 2075 2076 2077 2078 2079 2080
	if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
	        /* NLP_EVT_DEVICE_RM should unregister the RPI
		 * which should abort all outstanding IOs.
		 */
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
					NLP_EVT_DEVICE_RM);
		goto out;
	}

已提交
2081 2082
	if (irsp->ulpStatus) {
		/* Check for retry */
J
James Smart 已提交
2083
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
2084 2085 2086
			/* ELS command is being retried */
			goto out;
		/* LOGO failed */
2087 2088 2089 2090
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "2756 LOGO failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
2091
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
J
James Smart 已提交
2092
		if (lpfc_error_lost_link(irsp))
已提交
2093
			goto out;
J
James Smart 已提交
2094
		else
J
James Smart 已提交
2095
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2096
						NLP_EVT_CMPL_LOGO);
2097
	} else
2098 2099 2100
		/* Good status, call state machine.
		 * This will unregister the rpi if needed.
		 */
J
James Smart 已提交
2101
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2102
					NLP_EVT_CMPL_LOGO);
已提交
2103 2104 2105 2106 2107
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2108
/**
2109
 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127
 * @vport: pointer to a virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine constructs and issues an ELS Logout (LOGO) iocb command
 * to a remote node, referred by an @ndlp on a @vport. It constructs the
 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the LOGO ELS command.
 *
 * Return code
 *   0 - successfully issued logo
 *   1 - failed to issue logo
 **/
已提交
2128
int
J
James Smart 已提交
2129
lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
2130 2131
		    uint8_t retry)
{
J
James Smart 已提交
2132 2133
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
2134 2135 2136 2137
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;
2138
	int rc;
已提交
2139

2140 2141 2142 2143 2144 2145 2146
	spin_lock_irq(shost->host_lock);
	if (ndlp->nlp_flag & NLP_LOGO_SND) {
		spin_unlock_irq(shost->host_lock);
		return 0;
	}
	spin_unlock_irq(shost->host_lock);

2147
	cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
J
James Smart 已提交
2148 2149
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LOGO);
2150
	if (!elsiocb)
2151
		return 1;
已提交
2152 2153 2154 2155

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2156
	pcmd += sizeof(uint32_t);
已提交
2157 2158

	/* Fill in LOGO payload */
J
James Smart 已提交
2159
	*((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2160 2161
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
已提交
2162

J
James Smart 已提交
2163 2164 2165 2166
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue LOGO:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2167 2168
	phba->fc_stat.elsXmitLOGO++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
J
James Smart 已提交
2169
	spin_lock_irq(shost->host_lock);
已提交
2170
	ndlp->nlp_flag |= NLP_LOGO_SND;
J
James Smart 已提交
2171
	spin_unlock_irq(shost->host_lock);
2172
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2173 2174

	if (rc == IOCB_ERROR) {
J
James Smart 已提交
2175
		spin_lock_irq(shost->host_lock);
已提交
2176
		ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
2177
		spin_unlock_irq(shost->host_lock);
已提交
2178
		lpfc_els_free_iocb(phba, elsiocb);
2179
		return 1;
已提交
2180
	}
2181
	return 0;
已提交
2182 2183
}

2184
/**
2185
 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is a generic completion callback function for ELS commands.
 * Specifically, it is the callback function which does not need to perform
 * any command specific operations. It is currently used by the ELS command
 * issuing routines for the ELS State Change  Request (SCR),
 * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution
 * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than
 * certain debug loggings, this callback function simply invokes the
 * lpfc_els_chk_latt() routine to check whether link went down during the
 * discovery process.
 **/
已提交
2200
static void
J
James Smart 已提交
2201 2202
lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_iocbq *rspiocb)
已提交
2203
{
J
James Smart 已提交
2204
	struct lpfc_vport *vport = cmdiocb->vport;
已提交
2205 2206 2207 2208
	IOCB_t *irsp;

	irsp = &rspiocb->iocb;

J
James Smart 已提交
2209 2210 2211 2212
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"ELS cmd cmpl:    status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		irsp->un.elsreq64.remoteID);
已提交
2213
	/* ELS cmd tag <ulpIoTag> completes */
2214 2215 2216 2217
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
			 irsp->ulpIoTag, irsp->ulpStatus,
			 irsp->un.ulpWord[4], irsp->ulpTimeout);
已提交
2218
	/* Check to see if link went down during discovery */
J
James Smart 已提交
2219
	lpfc_els_chk_latt(vport);
已提交
2220 2221 2222 2223
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2224
/**
2225
 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245
 * @vport: pointer to a host virtual N_Port data structure.
 * @nportid: N_Port identifier to the remote node.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a State Change Request (SCR) to a fabric node
 * on a @vport. The remote node @nportid is passed into the function. It
 * first search the @vport node list to find the matching ndlp. If no such
 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
 * routine is invoked to send the SCR IOCB.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the SCR ELS command.
 *
 * Return code
 *   0 - Successfully issued scr command
 *   1 - Failed to issue scr command
 **/
已提交
2246
int
J
James Smart 已提交
2247
lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2248
{
J
James Smart 已提交
2249
	struct lpfc_hba  *phba = vport->phba;
已提交
2250 2251 2252 2253 2254 2255 2256 2257
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
2258
	cmdsize = (sizeof(uint32_t) + sizeof(SCR));
已提交
2259

2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271
	ndlp = lpfc_findnode_did(vport, nportid);
	if (!ndlp) {
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 1;
		lpfc_nlp_init(vport, ndlp, nportid);
		lpfc_enqueue_node(vport, ndlp);
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp)
			return 1;
	}
J
James Smart 已提交
2272 2273 2274

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_SCR);
已提交
2275

2276
	if (!elsiocb) {
2277 2278 2279
		/* This will trigger the release of the node just
		 * allocated
		 */
2280
		lpfc_nlp_put(ndlp);
2281
		return 1;
已提交
2282 2283 2284 2285 2286 2287
	}

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2288
	pcmd += sizeof(uint32_t);
已提交
2289 2290

	/* For SCR, remainder of payload is SCR parameter page */
2291
	memset(pcmd, 0, sizeof(SCR));
已提交
2292 2293
	((SCR *) pcmd)->Function = SCR_FUNC_FULL;

J
James Smart 已提交
2294 2295 2296 2297
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue SCR:       did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2298 2299
	phba->fc_stat.elsXmitSCR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2300 2301
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
2302 2303 2304 2305
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the rlease of
		 * the node.
		 */
2306
		lpfc_nlp_put(ndlp);
已提交
2307
		lpfc_els_free_iocb(phba, elsiocb);
2308
		return 1;
已提交
2309
	}
2310 2311 2312
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of node.
	 */
2313
	lpfc_nlp_put(ndlp);
2314
	return 0;
已提交
2315 2316
}

2317
/**
2318
 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338
 * @vport: pointer to a host virtual N_Port data structure.
 * @nportid: N_Port identifier to the remote node.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a Fibre Channel Address Resolution Response
 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
 * is passed into the function. It first search the @vport node list to find
 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the PARPR ELS command.
 *
 * Return code
 *   0 - Successfully issued farpr command
 *   1 - Failed to issue farpr command
 **/
已提交
2339
static int
J
James Smart 已提交
2340
lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2341
{
J
James Smart 已提交
2342
	struct lpfc_hba  *phba = vport->phba;
已提交
2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	FARP *fp;
	uint8_t *pcmd;
	uint32_t *lp;
	uint16_t cmdsize;
	struct lpfc_nodelist *ondlp;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
2354
	cmdsize = (sizeof(uint32_t) + sizeof(FARP));
已提交
2355

2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367
	ndlp = lpfc_findnode_did(vport, nportid);
	if (!ndlp) {
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 1;
		lpfc_nlp_init(vport, ndlp, nportid);
		lpfc_enqueue_node(vport, ndlp);
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp)
			return 1;
	}
J
James Smart 已提交
2368 2369 2370

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_RNID);
2371
	if (!elsiocb) {
2372 2373 2374
		/* This will trigger the release of the node just
		 * allocated
		 */
2375
		lpfc_nlp_put(ndlp);
2376
		return 1;
已提交
2377 2378 2379 2380 2381 2382
	}

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2383
	pcmd += sizeof(uint32_t);
已提交
2384 2385 2386

	/* Fill in FARPR payload */
	fp = (FARP *) (pcmd);
2387
	memset(fp, 0, sizeof(FARP));
已提交
2388 2389
	lp = (uint32_t *) pcmd;
	*lp++ = be32_to_cpu(nportid);
J
James Smart 已提交
2390
	*lp++ = be32_to_cpu(vport->fc_myDID);
已提交
2391 2392 2393
	fp->Rflags = 0;
	fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);

2394 2395
	memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
	memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
J
James Smart 已提交
2396
	ondlp = lpfc_findnode_did(vport, nportid);
2397
	if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
已提交
2398
		memcpy(&fp->OportName, &ondlp->nlp_portname,
2399
		       sizeof(struct lpfc_name));
已提交
2400
		memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2401
		       sizeof(struct lpfc_name));
已提交
2402 2403
	}

J
James Smart 已提交
2404 2405 2406 2407
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FARPR:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2408 2409
	phba->fc_stat.elsXmitFARPR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2410 2411
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
2412 2413 2414 2415
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the release of
		 * the node.
		 */
2416
		lpfc_nlp_put(ndlp);
已提交
2417
		lpfc_els_free_iocb(phba, elsiocb);
2418
		return 1;
已提交
2419
	}
2420 2421 2422
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of the node.
	 */
2423
	lpfc_nlp_put(ndlp);
2424
	return 0;
已提交
2425 2426
}

2427
/**
2428
 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2429 2430 2431 2432 2433 2434 2435 2436 2437 2438
 * @vport: pointer to a host virtual N_Port data structure.
 * @nlp: pointer to a node-list data structure.
 *
 * This routine cancels the timer with a delayed IOCB-command retry for
 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
 * removes the ELS retry event if it presents. In addition, if the
 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
 * commands are sent for the @vport's nodes that require issuing discovery
 * ADISC.
 **/
2439
void
J
James Smart 已提交
2440
lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2441
{
J
James Smart 已提交
2442
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2443
	struct lpfc_work_evt *evtp;
J
James Smart 已提交
2444

2445 2446
	if (!(nlp->nlp_flag & NLP_DELAY_TMO))
		return;
J
James Smart 已提交
2447
	spin_lock_irq(shost->host_lock);
2448
	nlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2449
	spin_unlock_irq(shost->host_lock);
2450 2451
	del_timer_sync(&nlp->nlp_delayfunc);
	nlp->nlp_last_elscmd = 0;
2452
	if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2453
		list_del_init(&nlp->els_retry_evt.evt_listp);
2454 2455 2456 2457
		/* Decrement nlp reference count held for the delayed retry */
		evtp = &nlp->els_retry_evt;
		lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
	}
2458
	if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
J
James Smart 已提交
2459
		spin_lock_irq(shost->host_lock);
2460
		nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
2461 2462
		spin_unlock_irq(shost->host_lock);
		if (vport->num_disc_nodes) {
2463 2464 2465 2466 2467 2468
			if (vport->port_state < LPFC_VPORT_READY) {
				/* Check if there are more ADISCs to be sent */
				lpfc_more_adisc(vport);
			} else {
				/* Check if there are more PLOGIs to be sent */
				lpfc_more_plogi(vport);
2469 2470 2471 2472 2473 2474 2475
				if (vport->num_disc_nodes == 0) {
					spin_lock_irq(shost->host_lock);
					vport->fc_flag &= ~FC_NDISC_ACTIVE;
					spin_unlock_irq(shost->host_lock);
					lpfc_can_disctmo(vport);
					lpfc_end_rscn(vport);
				}
2476 2477 2478 2479 2480 2481
			}
		}
	}
	return;
}

2482
/**
2483
 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495
 * @ptr: holder for the pointer to the timer function associated data (ndlp).
 *
 * This routine is invoked by the ndlp delayed-function timer to check
 * whether there is any pending ELS retry event(s) with the node. If not, it
 * simply returns. Otherwise, if there is at least one ELS delayed event, it
 * adds the delayed events to the HBA work list and invokes the
 * lpfc_worker_wake_up() routine to wake up worker thread to process the
 * event. Note that lpfc_nlp_get() is called before posting the event to
 * the work list to hold reference count of ndlp so that it guarantees the
 * reference to ndlp will still be available when the worker thread gets
 * to the event associated with the ndlp.
 **/
已提交
2496 2497 2498
void
lpfc_els_retry_delay(unsigned long ptr)
{
J
James Smart 已提交
2499 2500 2501
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
	struct lpfc_vport *vport = ndlp->vport;
	struct lpfc_hba   *phba = vport->phba;
2502
	unsigned long flags;
J
James Smart 已提交
2503
	struct lpfc_work_evt  *evtp = &ndlp->els_retry_evt;
已提交
2504

2505
	spin_lock_irqsave(&phba->hbalock, flags);
已提交
2506
	if (!list_empty(&evtp->evt_listp)) {
2507
		spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2508 2509 2510
		return;
	}

2511 2512 2513 2514
	/* We need to hold the node by incrementing the reference
	 * count until the queued work is done
	 */
	evtp->evt_arg1  = lpfc_nlp_get(ndlp);
2515 2516 2517
	if (evtp->evt_arg1) {
		evtp->evt = LPFC_EVT_ELS_RETRY;
		list_add_tail(&evtp->evt_listp, &phba->work_list);
2518
		lpfc_worker_wake_up(phba);
2519
	}
2520
	spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2521 2522 2523
	return;
}

2524
/**
2525
 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2526 2527 2528 2529 2530 2531 2532
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine is the worker-thread handler for processing the @ndlp delayed
 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
 * the last ELS command from the associated ndlp and invokes the proper ELS
 * function according to the delayed ELS command to retry the command.
 **/
已提交
2533 2534 2535
void
lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
2536 2537 2538
	struct lpfc_vport *vport = ndlp->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	uint32_t cmd, did, retry;
已提交
2539

J
James Smart 已提交
2540
	spin_lock_irq(shost->host_lock);
2541 2542 2543
	did = ndlp->nlp_DID;
	cmd = ndlp->nlp_last_elscmd;
	ndlp->nlp_last_elscmd = 0;
已提交
2544 2545

	if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
J
James Smart 已提交
2546
		spin_unlock_irq(shost->host_lock);
已提交
2547 2548 2549 2550
		return;
	}

	ndlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2551
	spin_unlock_irq(shost->host_lock);
2552 2553 2554 2555 2556 2557
	/*
	 * If a discovery event readded nlp_delayfunc after timer
	 * firing and before processing the timer, cancel the
	 * nlp_delayfunc.
	 */
	del_timer_sync(&ndlp->nlp_delayfunc);
已提交
2558
	retry = ndlp->nlp_retry;
2559
	ndlp->nlp_retry = 0;
已提交
2560 2561 2562

	switch (cmd) {
	case ELS_CMD_FLOGI:
J
James Smart 已提交
2563
		lpfc_issue_els_flogi(vport, ndlp, retry);
已提交
2564 2565
		break;
	case ELS_CMD_PLOGI:
J
James Smart 已提交
2566
		if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2567
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2568
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2569
		}
已提交
2570 2571
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
2572
		if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2573
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2574
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2575
		}
已提交
2576 2577
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
2578
		if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2579
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2580
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2581
		}
已提交
2582 2583
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
2584
		if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2585
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2586
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2587
		}
已提交
2588
		break;
2589 2590 2591
	case ELS_CMD_FDISC:
		lpfc_issue_els_fdisc(vport, ndlp, retry);
		break;
已提交
2592 2593 2594 2595
	}
	return;
}

2596
/**
2597
 * lpfc_els_retry - Make retry decision on an els command iocb
2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine makes a retry decision on an ELS command IOCB, which has
 * failed. The following ELS IOCBs use this function for retrying the command
 * when previously issued command responsed with error status: FLOGI, PLOGI,
 * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the
 * returned error status, it makes the decision whether a retry shall be
 * issued for the command, and whether a retry shall be made immediately or
 * delayed. In the former case, the corresponding ELS command issuing-function
 * is called to retry the command. In the later case, the ELS command shall
 * be posted to the ndlp delayed event and delayed function timer set to the
 * ndlp for the delayed command issusing.
 *
 * Return code
 *   0 - No retry of els command is made
 *   1 - Immediate or delayed retry of els command is made
 **/
已提交
2617
static int
J
James Smart 已提交
2618 2619
lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
	       struct lpfc_iocbq *rspiocb)
已提交
2620
{
J
James Smart 已提交
2621 2622 2623 2624 2625
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
已提交
2626 2627
	uint32_t *elscmd;
	struct ls_rjt stat;
J
James Smart 已提交
2628
	int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2629
	int logerr = 0;
J
James Smart 已提交
2630
	uint32_t cmd = 0;
2631
	uint32_t did;
已提交
2632

2633

已提交
2634 2635 2636 2637 2638 2639 2640 2641 2642
	/* Note: context2 may be 0 for internal driver abort
	 * of delays ELS command.
	 */

	if (pcmd && pcmd->virt) {
		elscmd = (uint32_t *) (pcmd->virt);
		cmd = *elscmd++;
	}

2643
	if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2644 2645 2646 2647
		did = ndlp->nlp_DID;
	else {
		/* We should only hit this case for retrying PLOGI */
		did = irsp->un.elsreq64.remoteID;
J
James Smart 已提交
2648
		ndlp = lpfc_findnode_did(vport, did);
2649 2650
		if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
		    && (cmd != ELS_CMD_PLOGI))
2651 2652 2653
			return 1;
	}

J
James Smart 已提交
2654 2655 2656 2657
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Retry ELS:       wd7:x%x wd4:x%x did:x%x",
		*(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID);

已提交
2658 2659 2660 2661 2662 2663 2664 2665
	switch (irsp->ulpStatus) {
	case IOSTAT_FCP_RSP_ERROR:
	case IOSTAT_REMOTE_STOP:
		break;

	case IOSTAT_LOCAL_REJECT:
		switch ((irsp->un.ulpWord[4] & 0xff)) {
		case IOERR_LOOP_OPEN_FAILURE:
2666 2667 2668 2669 2670 2671 2672 2673 2674
			if (cmd == ELS_CMD_FLOGI) {
				if (PCI_DEVICE_ID_HORNET ==
					phba->pcidev->device) {
					phba->fc_topology = TOPOLOGY_LOOP;
					phba->pport->fc_myDID = 0;
					phba->alpa_map[0] = 0;
					phba->alpa_map[1] = 0;
				}
			}
J
James Smart 已提交
2675
			if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
2676
				delay = 1000;
已提交
2677 2678 2679
			retry = 1;
			break;

2680
		case IOERR_ILLEGAL_COMMAND:
2681 2682 2683 2684 2685 2686 2687 2688 2689
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					 "0124 Retry illegal cmd x%x "
					 "retry:x%x delay:x%x\n",
					 cmd, cmdiocb->retry, delay);
			retry = 1;
			/* All command's retry policy */
			maxretry = 8;
			if (cmdiocb->retry > 2)
				delay = 1000;
2690 2691
			break;

已提交
2692
		case IOERR_NO_RESOURCES:
2693
			logerr = 1; /* HBA out of resources */
J
James Smart 已提交
2694 2695 2696 2697 2698 2699 2700
			retry = 1;
			if (cmdiocb->retry > 100)
				delay = 100;
			maxretry = 250;
			break;

		case IOERR_ILLEGAL_FRAME:
2701
			delay = 100;
已提交
2702 2703 2704
			retry = 1;
			break;

J
James Smart 已提交
2705
		case IOERR_SEQUENCE_TIMEOUT:
已提交
2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721
		case IOERR_INVALID_RPI:
			retry = 1;
			break;
		}
		break;

	case IOSTAT_NPORT_RJT:
	case IOSTAT_FABRIC_RJT:
		if (irsp->un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
			retry = 1;
			break;
		}
		break;

	case IOSTAT_NPORT_BSY:
	case IOSTAT_FABRIC_BSY:
2722
		logerr = 1; /* Fabric / Remote NPort out of resources */
已提交
2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735
		retry = 1;
		break;

	case IOSTAT_LS_RJT:
		stat.un.lsRjtError = be32_to_cpu(irsp->un.ulpWord[4]);
		/* Added for Vendor specifc support
		 * Just keep retrying for these Rsn / Exp codes
		 */
		switch (stat.un.b.lsRjtRsnCode) {
		case LSRJT_UNABLE_TPC:
			if (stat.un.b.lsRjtRsnCodeExp ==
			    LSEXP_CMD_IN_PROGRESS) {
				if (cmd == ELS_CMD_PLOGI) {
2736
					delay = 1000;
已提交
2737 2738 2739 2740 2741 2742
					maxretry = 48;
				}
				retry = 1;
				break;
			}
			if (cmd == ELS_CMD_PLOGI) {
2743
				delay = 1000;
已提交
2744 2745 2746 2747
				maxretry = lpfc_max_els_tries + 1;
				retry = 1;
				break;
			}
2748 2749 2750
			if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
			  (cmd == ELS_CMD_FDISC) &&
			  (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
2751 2752 2753 2754
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
						 "0125 FDISC Failed (x%x). "
						 "Fabric out of resources\n",
						 stat.un.lsRjtError);
2755 2756 2757
				lpfc_vport_set_state(vport,
						     FC_VPORT_NO_FABRIC_RSCS);
			}
已提交
2758 2759 2760
			break;

		case LSRJT_LOGICAL_BSY:
J
James Smart 已提交
2761 2762
			if ((cmd == ELS_CMD_PLOGI) ||
			    (cmd == ELS_CMD_PRLI)) {
2763
				delay = 1000;
已提交
2764
				maxretry = 48;
2765
			} else if (cmd == ELS_CMD_FDISC) {
2766 2767 2768 2769
				/* FDISC retry policy */
				maxretry = 48;
				if (cmdiocb->retry >= 32)
					delay = 1000;
已提交
2770 2771 2772
			}
			retry = 1;
			break;
2773 2774

		case LSRJT_LOGICAL_ERR:
2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785
			/* There are some cases where switches return this
			 * error when they are not ready and should be returning
			 * Logical Busy. We should delay every time.
			 */
			if (cmd == ELS_CMD_FDISC &&
			    stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
				maxretry = 3;
				delay = 1000;
				retry = 1;
				break;
			}
2786 2787 2788 2789 2790 2791
		case LSRJT_PROTOCOL_ERR:
			if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
			  (cmd == ELS_CMD_FDISC) &&
			  ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
			  (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
			  ) {
2792
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2793
						 "0122 FDISC Failed (x%x). "
2794 2795
						 "Fabric Detected Bad WWN\n",
						 stat.un.lsRjtError);
2796 2797 2798 2799
				lpfc_vport_set_state(vport,
						     FC_VPORT_FABRIC_REJ_WWN);
			}
			break;
已提交
2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810
		}
		break;

	case IOSTAT_INTERMED_RSP:
	case IOSTAT_BA_RJT:
		break;

	default:
		break;
	}

2811
	if (did == FDMI_DID)
已提交
2812 2813
		retry = 1;

2814
	if (((cmd == ELS_CMD_FLOGI) || (cmd == ELS_CMD_FDISC)) &&
2815 2816
	    (phba->fc_topology != TOPOLOGY_LOOP) &&
	    !lpfc_error_lost_link(irsp)) {
2817 2818
		/* FLOGI retry policy */
		retry = 1;
2819 2820 2821 2822 2823
		/* retry forever */
		maxretry = 0;
		if (cmdiocb->retry >= 100)
			delay = 5000;
		else if (cmdiocb->retry >= 32)
2824 2825 2826
			delay = 1000;
	}

2827 2828
	cmdiocb->retry++;
	if (maxretry && (cmdiocb->retry >= maxretry)) {
已提交
2829 2830 2831 2832
		phba->fc_stat.elsRetryExceeded++;
		retry = 0;
	}

2833 2834 2835
	if ((vport->load_flag & FC_UNLOADING) != 0)
		retry = 0;

已提交
2836 2837 2838
	if (retry) {

		/* Retry ELS command <elsCmd> to remote NPORT <did> */
2839 2840 2841 2842
		lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
				 "0107 Retry ELS command x%x to remote "
				 "NPORT x%x Data: x%x x%x\n",
				 cmd, did, cmdiocb->retry, delay);
已提交
2843

J
James Smart 已提交
2844 2845 2846 2847 2848
		if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
			((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
			((irsp->un.ulpWord[4] & 0xff) != IOERR_NO_RESOURCES))) {
			/* Don't reset timer for no resources */

已提交
2849
			/* If discovery / RSCN timer is running, reset it */
J
James Smart 已提交
2850
			if (timer_pending(&vport->fc_disctmo) ||
2851
			    (vport->fc_flag & FC_RSCN_MODE))
J
James Smart 已提交
2852
				lpfc_set_disctmo(vport);
已提交
2853 2854 2855
		}

		phba->fc_stat.elsXmitRetry++;
2856
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
已提交
2857 2858 2859
			phba->fc_stat.elsDelayRetry++;
			ndlp->nlp_retry = cmdiocb->retry;

2860 2861 2862
			/* delay is specified in milliseconds */
			mod_timer(&ndlp->nlp_delayfunc,
				jiffies + msecs_to_jiffies(delay));
J
James Smart 已提交
2863
			spin_lock_irq(shost->host_lock);
已提交
2864
			ndlp->nlp_flag |= NLP_DELAY_TMO;
J
James Smart 已提交
2865
			spin_unlock_irq(shost->host_lock);
已提交
2866

2867
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2868 2869 2870 2871 2872 2873
			if (cmd == ELS_CMD_PRLI)
				lpfc_nlp_set_state(vport, ndlp,
					NLP_STE_REG_LOGIN_ISSUE);
			else
				lpfc_nlp_set_state(vport, ndlp,
					NLP_STE_NPR_NODE);
已提交
2874 2875
			ndlp->nlp_last_elscmd = cmd;

2876
			return 1;
已提交
2877 2878 2879
		}
		switch (cmd) {
		case ELS_CMD_FLOGI:
J
James Smart 已提交
2880
			lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
2881
			return 1;
2882 2883 2884
		case ELS_CMD_FDISC:
			lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
			return 1;
已提交
2885
		case ELS_CMD_PLOGI:
2886
			if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2887
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2888
				lpfc_nlp_set_state(vport, ndlp,
2889
						   NLP_STE_PLOGI_ISSUE);
2890
			}
J
James Smart 已提交
2891
			lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
2892
			return 1;
已提交
2893
		case ELS_CMD_ADISC:
2894
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2895 2896
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
2897
			return 1;
已提交
2898
		case ELS_CMD_PRLI:
2899
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2900 2901
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
			lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
2902
			return 1;
已提交
2903
		case ELS_CMD_LOGO:
2904
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2905 2906
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
			lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
2907
			return 1;
已提交
2908 2909 2910
		}
	}
	/* No retry ELS command <elsCmd> to remote NPORT <did> */
2911 2912 2913 2914 2915 2916 2917 2918 2919
	if (logerr) {
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
			 "0137 No retry ELS command x%x to remote "
			 "NPORT x%x: Out of Resources: Error:x%x/%x\n",
			 cmd, did, irsp->ulpStatus,
			 irsp->un.ulpWord[4]);
	}
	else {
		lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2920 2921 2922 2923
			 "0108 No retry ELS command x%x to remote "
			 "NPORT x%x Retried:%d Error:x%x/%x\n",
			 cmd, did, cmdiocb->retry, irsp->ulpStatus,
			 irsp->un.ulpWord[4]);
2924
	}
2925
	return 0;
已提交
2926 2927
}

2928
/**
2929
 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941
 * @phba: pointer to lpfc hba data structure.
 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
 *
 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
 * checks to see whether there is a lpfc DMA buffer associated with the
 * response of the command IOCB. If so, it will be released before releasing
 * the lpfc DMA buffer associated with the IOCB itself.
 *
 * Return code
 *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
 **/
2942
static int
2943 2944 2945 2946
lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
{
	struct lpfc_dmabuf *buf_ptr;

2947
	/* Free the response before processing the command. */
2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959
	if (!list_empty(&buf_ptr1->list)) {
		list_remove_head(&buf_ptr1->list, buf_ptr,
				 struct lpfc_dmabuf,
				 list);
		lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
		kfree(buf_ptr);
	}
	lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
	kfree(buf_ptr1);
	return 0;
}

2960
/**
2961
 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
2962 2963 2964 2965 2966 2967 2968 2969 2970 2971
 * @phba: pointer to lpfc hba data structure.
 * @buf_ptr: pointer to the lpfc dma buffer data structure.
 *
 * This routine releases the lpfc Direct Memory Access (DMA) buffer
 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
 * pool.
 *
 * Return code
 *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
 **/
2972
static int
2973 2974 2975 2976 2977 2978 2979
lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
{
	lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
	kfree(buf_ptr);
	return 0;
}

2980
/**
2981
 * lpfc_els_free_iocb - Free a command iocb and its associated resources
2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006
 * @phba: pointer to lpfc hba data structure.
 * @elsiocb: pointer to lpfc els command iocb data structure.
 *
 * This routine frees a command IOCB and its associated resources. The
 * command IOCB data structure contains the reference to various associated
 * resources, these fields must be set to NULL if the associated reference
 * not present:
 *   context1 - reference to ndlp
 *   context2 - reference to cmd
 *   context2->next - reference to rsp
 *   context3 - reference to bpl
 *
 * It first properly decrements the reference count held on ndlp for the
 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
 * set, it invokes the lpfc_els_free_data() routine to release the Direct
 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
 * adds the DMA buffer the @phba data structure for the delayed release.
 * If reference to the Buffer Pointer List (BPL) is present, the
 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
 * invoked to release the IOCB data structure back to @phba IOCBQ list.
 *
 * Return code
 *   0 - Success (currently, always return 0)
 **/
已提交
3007
int
3008
lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
已提交
3009 3010
{
	struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
3011 3012 3013 3014 3015 3016
	struct lpfc_nodelist *ndlp;

	ndlp = (struct lpfc_nodelist *)elsiocb->context1;
	if (ndlp) {
		if (ndlp->nlp_flag & NLP_DEFER_RM) {
			lpfc_nlp_put(ndlp);
已提交
3017

3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029
			/* If the ndlp is not being used by another discovery
			 * thread, free it.
			 */
			if (!lpfc_nlp_not_used(ndlp)) {
				/* If ndlp is being used by another discovery
				 * thread, just clear NLP_DEFER_RM
				 */
				ndlp->nlp_flag &= ~NLP_DEFER_RM;
			}
		}
		else
			lpfc_nlp_put(ndlp);
3030 3031
		elsiocb->context1 = NULL;
	}
已提交
3032 3033
	/* context2  = cmd,  context2->next = rsp, context3 = bpl */
	if (elsiocb->context2) {
3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062
		if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
			/* Firmware could still be in progress of DMAing
			 * payload, so don't free data buffer till after
			 * a hbeat.
			 */
			elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
			buf_ptr = elsiocb->context2;
			elsiocb->context2 = NULL;
			if (buf_ptr) {
				buf_ptr1 = NULL;
				spin_lock_irq(&phba->hbalock);
				if (!list_empty(&buf_ptr->list)) {
					list_remove_head(&buf_ptr->list,
						buf_ptr1, struct lpfc_dmabuf,
						list);
					INIT_LIST_HEAD(&buf_ptr1->list);
					list_add_tail(&buf_ptr1->list,
						&phba->elsbuf);
					phba->elsbuf_cnt++;
				}
				INIT_LIST_HEAD(&buf_ptr->list);
				list_add_tail(&buf_ptr->list, &phba->elsbuf);
				phba->elsbuf_cnt++;
				spin_unlock_irq(&phba->hbalock);
			}
		} else {
			buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
			lpfc_els_free_data(phba, buf_ptr1);
		}
已提交
3063 3064 3065 3066
	}

	if (elsiocb->context3) {
		buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
3067
		lpfc_els_free_bpl(phba, buf_ptr);
已提交
3068
	}
3069
	lpfc_sli_release_iocbq(phba, elsiocb);
已提交
3070 3071 3072
	return 0;
}

3073
/**
3074
 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function to the Logout (LOGO)
 * Accept (ACC) Response ELS command. This routine is invoked to indicate
 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
 * release the ndlp if it has the last reference remaining (reference count
 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
 * field to NULL to inform the following lpfc_els_free_iocb() routine no
 * ndlp reference count needs to be decremented. Otherwise, the ndlp
 * reference use-count shall be decremented by the lpfc_els_free_iocb()
 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
 * IOCB data structure.
 **/
已提交
3090
static void
J
James Smart 已提交
3091 3092
lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		       struct lpfc_iocbq *rspiocb)
已提交
3093
{
J
James Smart 已提交
3094 3095
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_vport *vport = cmdiocb->vport;
J
James Smart 已提交
3096 3097 3098 3099 3100 3101
	IOCB_t *irsp;

	irsp = &rspiocb->iocb;
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"ACC LOGO cmpl:   status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
已提交
3102
	/* ACC to LOGO completes to NPort <nlp_DID> */
3103 3104 3105 3106 3107
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0109 ACC to LOGO completes to NPort x%x "
			 "Data: x%x x%x x%x\n",
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
3108 3109 3110 3111 3112 3113 3114 3115

	if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
		/* NPort Recovery mode or node is just allocated */
		if (!lpfc_nlp_not_used(ndlp)) {
			/* If the ndlp is being used by another discovery
			 * thread, just unregister the RPI.
			 */
			lpfc_unreg_rpi(vport, ndlp);
3116 3117 3118 3119 3120
		} else {
			/* Indicate the node has already released, should
			 * not reference to it from within lpfc_els_free_iocb.
			 */
			cmdiocb->context1 = NULL;
3121
		}
已提交
3122 3123 3124 3125 3126
	}
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

3127
/**
3128
 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139
 * @phba: pointer to lpfc hba data structure.
 * @pmb: pointer to the driver internal queue element for mailbox command.
 *
 * This routine is the completion callback function for unregister default
 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
 * decrements the ndlp reference count held for this completion callback
 * function. After that, it invokes the lpfc_nlp_not_used() to check
 * whether there is only one reference left on the ndlp. If so, it will
 * perform one more decrement and trigger the release of the ndlp.
 **/
J
James Smart 已提交
3140 3141 3142 3143 3144 3145
void
lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;

3146 3147 3148 3149 3150 3151 3152 3153
	/*
	 * This routine is used to register and unregister in previous SLI
	 * modes.
	 */
	if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
	    (phba->sli_rev == LPFC_SLI_REV4))
		lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);

J
James Smart 已提交
3154 3155 3156 3157
	pmb->context1 = NULL;
	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	kfree(mp);
	mempool_free(pmb, phba->mbox_mem_pool);
3158
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3159 3160 3161 3162 3163 3164 3165
		lpfc_nlp_put(ndlp);
		/* This is the end of the default RPI cleanup logic for this
		 * ndlp. If no other discovery threads are using this ndlp.
		 * we should free all resources associated with it.
		 */
		lpfc_nlp_not_used(ndlp);
	}
3166

J
James Smart 已提交
3167 3168 3169
	return;
}

3170
/**
3171
 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function for ELS Response IOCB
 * command. In normal case, this callback function just properly sets the
 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
 * field in the command IOCB is not NULL, the referred mailbox command will
 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
 * the IOCB. Under error conditions, such as when a LS_RJT is returned or a
 * link down event occurred during the discovery, the lpfc_nlp_not_used()
 * routine shall be invoked trying to release the ndlp if no other threads
 * are currently referring it.
 **/
已提交
3186
static void
J
James Smart 已提交
3187
lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3188
		  struct lpfc_iocbq *rspiocb)
已提交
3189
{
J
James Smart 已提交
3190 3191 3192
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
	struct Scsi_Host  *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
3193 3194
	IOCB_t  *irsp;
	uint8_t *pcmd;
已提交
3195
	LPFC_MBOXQ_t *mbox = NULL;
J
James Smart 已提交
3196
	struct lpfc_dmabuf *mp = NULL;
3197
	uint32_t ls_rjt = 0;
已提交
3198

J
James Smart 已提交
3199 3200
	irsp = &rspiocb->iocb;

已提交
3201 3202 3203
	if (cmdiocb->context_un.mbox)
		mbox = cmdiocb->context_un.mbox;

3204 3205 3206
	/* First determine if this is a LS_RJT cmpl. Note, this callback
	 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
	 */
3207
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3208 3209
	if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
	    (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3210
		/* A LS_RJT associated with Default RPI cleanup has its own
D
Daniel Mack 已提交
3211
		 * separate code path.
3212 3213 3214 3215 3216
		 */
		if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
			ls_rjt = 1;
	}

已提交
3217
	/* Check to see if link went down during discovery */
3218
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
已提交
3219
		if (mbox) {
3220 3221 3222 3223 3224
			mp = (struct lpfc_dmabuf *) mbox->context1;
			if (mp) {
				lpfc_mbuf_free(phba, mp->virt, mp->phys);
				kfree(mp);
			}
3225
			mempool_free(mbox, phba->mbox_mem_pool);
已提交
3226
		}
3227 3228
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
		    (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3229
			if (lpfc_nlp_not_used(ndlp)) {
3230
				ndlp = NULL;
3231 3232 3233 3234 3235 3236
				/* Indicate the node has already released,
				 * should not reference to it from within
				 * the routine lpfc_els_free_iocb.
				 */
				cmdiocb->context1 = NULL;
			}
已提交
3237 3238 3239
		goto out;
	}

J
James Smart 已提交
3240
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3241
		"ELS rsp cmpl:    status:x%x/x%x did:x%x",
J
James Smart 已提交
3242
		irsp->ulpStatus, irsp->un.ulpWord[4],
3243
		cmdiocb->iocb.un.elsreq64.remoteID);
已提交
3244
	/* ELS response tag <ulpIoTag> completes */
3245 3246 3247 3248 3249 3250 3251
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0110 ELS response tag x%x completes "
			 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
			 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
			 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
已提交
3252 3253 3254
	if (mbox) {
		if ((rspiocb->iocb.ulpStatus == 0)
		    && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
J
James Smart 已提交
3255
			lpfc_unreg_rpi(vport, ndlp);
3256 3257 3258
			/* Increment reference count to ndlp to hold the
			 * reference to ndlp for the callback function.
			 */
3259
			mbox->context2 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
3260
			mbox->vport = vport;
J
James Smart 已提交
3261 3262 3263 3264 3265 3266 3267 3268
			if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
				mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
				mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
			}
			else {
				mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
				ndlp->nlp_prev_state = ndlp->nlp_state;
				lpfc_nlp_set_state(vport, ndlp,
J
James Smart 已提交
3269
					   NLP_STE_REG_LOGIN_ISSUE);
J
James Smart 已提交
3270
			}
3271
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3272
			    != MBX_NOT_FINISHED)
已提交
3273
				goto out;
3274 3275 3276 3277 3278
			else
				/* Decrement the ndlp reference count we
				 * set for this failed mailbox command.
				 */
				lpfc_nlp_put(ndlp);
3279 3280 3281 3282 3283 3284 3285 3286

			/* ELS rsp: Cannot issue reg_login for <NPortid> */
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				"0138 ELS rsp: Cannot issue reg_login for x%x "
				"Data: x%x x%x x%x\n",
				ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
				ndlp->nlp_rpi);

3287
			if (lpfc_nlp_not_used(ndlp)) {
3288
				ndlp = NULL;
3289 3290 3291 3292 3293 3294
				/* Indicate node has already been released,
				 * should not reference to it from within
				 * the routine lpfc_els_free_iocb.
				 */
				cmdiocb->context1 = NULL;
			}
已提交
3295
		} else {
J
James Smart 已提交
3296 3297 3298
			/* Do not drop node for lpfc_els_abort'ed ELS cmds */
			if (!lpfc_error_lost_link(irsp) &&
			    ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3299
				if (lpfc_nlp_not_used(ndlp)) {
3300
					ndlp = NULL;
3301 3302 3303 3304 3305 3306 3307
					/* Indicate node has already been
					 * released, should not reference
					 * to it from within the routine
					 * lpfc_els_free_iocb.
					 */
					cmdiocb->context1 = NULL;
				}
已提交
3308 3309
			}
		}
3310 3311 3312 3313 3314 3315
		mp = (struct lpfc_dmabuf *) mbox->context1;
		if (mp) {
			lpfc_mbuf_free(phba, mp->virt, mp->phys);
			kfree(mp);
		}
		mempool_free(mbox, phba->mbox_mem_pool);
已提交
3316 3317
	}
out:
3318
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
J
James Smart 已提交
3319
		spin_lock_irq(shost->host_lock);
J
James Smart 已提交
3320
		ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
J
James Smart 已提交
3321
		spin_unlock_irq(shost->host_lock);
3322 3323 3324 3325 3326 3327 3328

		/* If the node is not being used by another discovery thread,
		 * and we are sending a reject, we are done with it.
		 * Release driver reference count here and free associated
		 * resources.
		 */
		if (ls_rjt)
3329 3330 3331 3332 3333 3334
			if (lpfc_nlp_not_used(ndlp))
				/* Indicate node has already been released,
				 * should not reference to it from within
				 * the routine lpfc_els_free_iocb.
				 */
				cmdiocb->context1 = NULL;
已提交
3335
	}
3336

已提交
3337 3338 3339 3340
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

3341
/**
3342
 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365
 * @vport: pointer to a host virtual N_Port data structure.
 * @flag: the els command code to be accepted.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 * @mbox: pointer to the driver internal queue element for mailbox command.
 *
 * This routine prepares and issues an Accept (ACC) response IOCB
 * command. It uses the @flag to properly set up the IOCB field for the
 * specific ACC response command to be issued and invokes the
 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
 * @mbox pointer is passed in, it will be put into the context_un.mbox
 * field of the IOCB for the completion callback function to issue the
 * mailbox command to the HBA later when callback is invoked.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the corresponding response ELS IOCB command.
 *
 * Return code
 *   0 - Successfully issued acc response
 *   1 - Failed to issue acc response
 **/
已提交
3366
int
J
James Smart 已提交
3367 3368
lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
		 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3369
		 LPFC_MBOXQ_t *mbox)
已提交
3370
{
J
James Smart 已提交
3371 3372
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
3373 3374 3375 3376 3377 3378 3379
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;
3380
	ELS_PKT *els_pkt_ptr;
已提交
3381 3382 3383 3384 3385 3386

	psli = &phba->sli;
	oldcmd = &oldiocb->iocb;

	switch (flag) {
	case ELS_CMD_ACC:
3387
		cmdsize = sizeof(uint32_t);
J
James Smart 已提交
3388 3389
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3390
		if (!elsiocb) {
J
James Smart 已提交
3391
			spin_lock_irq(shost->host_lock);
3392
			ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3393
			spin_unlock_irq(shost->host_lock);
3394
			return 1;
已提交
3395
		}
J
James Smart 已提交
3396

已提交
3397 3398 3399 3400
		icmd = &elsiocb->iocb;
		icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
		pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
		*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3401
		pcmd += sizeof(uint32_t);
J
James Smart 已提交
3402 3403 3404 3405

		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
			"Issue ACC:       did:x%x flg:x%x",
			ndlp->nlp_DID, ndlp->nlp_flag, 0);
已提交
3406 3407
		break;
	case ELS_CMD_PLOGI:
3408
		cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
J
James Smart 已提交
3409 3410
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3411
		if (!elsiocb)
3412
			return 1;
3413

已提交
3414 3415 3416 3417 3418 3419 3420 3421
		icmd = &elsiocb->iocb;
		icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
		pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

		if (mbox)
			elsiocb->context_un.mbox = mbox;

		*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3422 3423
		pcmd += sizeof(uint32_t);
		memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
J
James Smart 已提交
3424 3425 3426 3427

		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
			"Issue ACC PLOGI: did:x%x flg:x%x",
			ndlp->nlp_DID, ndlp->nlp_flag, 0);
已提交
3428
		break;
3429
	case ELS_CMD_PRLO:
3430
		cmdsize = sizeof(uint32_t) + sizeof(PRLO);
J
James Smart 已提交
3431
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3432 3433 3434 3435 3436 3437 3438 3439 3440
					     ndlp, ndlp->nlp_DID, ELS_CMD_PRLO);
		if (!elsiocb)
			return 1;

		icmd = &elsiocb->iocb;
		icmd->ulpContext = oldcmd->ulpContext; /* Xri */
		pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

		memcpy(pcmd, ((struct lpfc_dmabuf *) oldiocb->context2)->virt,
3441
		       sizeof(uint32_t) + sizeof(PRLO));
3442 3443 3444
		*((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
		els_pkt_ptr = (ELS_PKT *) pcmd;
		els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
J
James Smart 已提交
3445 3446 3447 3448

		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
			"Issue ACC PRLO:  did:x%x flg:x%x",
			ndlp->nlp_DID, ndlp->nlp_flag, 0);
3449
		break;
已提交
3450
	default:
3451
		return 1;
已提交
3452 3453
	}
	/* Xmit ELS ACC response tag <ulpIoTag> */
3454 3455 3456 3457 3458 3459
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
			 "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
已提交
3460
	if (ndlp->nlp_flag & NLP_LOGO_ACC) {
J
James Smart 已提交
3461
		spin_lock_irq(shost->host_lock);
3462
		ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3463
		spin_unlock_irq(shost->host_lock);
已提交
3464 3465
		elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
	} else {
J
James Smart 已提交
3466
		elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3467 3468 3469
	}

	phba->fc_stat.elsXmitACC++;
3470
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3471 3472
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3473
		return 1;
已提交
3474
	}
3475
	return 0;
已提交
3476 3477
}

3478
/**
3479
 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499
 * @vport: pointer to a virtual N_Port data structure.
 * @rejectError:
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 * @mbox: pointer to the driver internal queue element for mailbox command.
 *
 * This routine prepares and issue an Reject (RJT) response IOCB
 * command. If a @mbox pointer is passed in, it will be put into the
 * context_un.mbox field of the IOCB for the completion callback function
 * to issue to the HBA later.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the reject response ELS IOCB command.
 *
 * Return code
 *   0 - Successfully issued reject response
 *   1 - Failed to issue reject response
 **/
已提交
3500
int
J
James Smart 已提交
3501
lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
J
James Smart 已提交
3502 3503
		    struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
		    LPFC_MBOXQ_t *mbox)
已提交
3504
{
J
James Smart 已提交
3505
	struct lpfc_hba  *phba = vport->phba;
已提交
3506 3507 3508 3509 3510 3511 3512 3513 3514
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
3515
	cmdsize = 2 * sizeof(uint32_t);
J
James Smart 已提交
3516 3517
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LS_RJT);
3518
	if (!elsiocb)
3519
		return 1;
已提交
3520 3521 3522 3523 3524 3525 3526

	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = ELS_CMD_LS_RJT;
3527
	pcmd += sizeof(uint32_t);
已提交
3528 3529
	*((uint32_t *) (pcmd)) = rejectError;

3530
	if (mbox)
J
James Smart 已提交
3531 3532
		elsiocb->context_un.mbox = mbox;

已提交
3533
	/* Xmit ELS RJT <err> response tag <ulpIoTag> */
3534 3535 3536 3537 3538 3539 3540
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0129 Xmit ELS RJT x%x response tag x%x "
			 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
			 "rpi x%x\n",
			 rejectError, elsiocb->iotag,
			 elsiocb->iocb.ulpContext, ndlp->nlp_DID,
			 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
J
James Smart 已提交
3541 3542 3543 3544
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"Issue LS_RJT:    did:x%x flg:x%x err:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, rejectError);

已提交
3545
	phba->fc_stat.elsXmitLSRJT++;
J
James Smart 已提交
3546
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3547
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3548

已提交
3549 3550
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3551
		return 1;
已提交
3552
	}
3553
	return 0;
已提交
3554 3555
}

3556
/**
3557
 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574
 * @vport: pointer to a virtual N_Port data structure.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine prepares and issues an Accept (ACC) response to Address
 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the ADISC Accept response ELS IOCB command.
 *
 * Return code
 *   0 - Successfully issued acc adisc response
 *   1 - Failed to issue adisc acc response
 **/
已提交
3575
int
J
James Smart 已提交
3576 3577
lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
		       struct lpfc_nodelist *ndlp)
已提交
3578
{
J
James Smart 已提交
3579
	struct lpfc_hba  *phba = vport->phba;
已提交
3580
	ADISC *ap;
J
James Smart 已提交
3581
	IOCB_t *icmd, *oldcmd;
已提交
3582 3583 3584 3585 3586
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

3587
	cmdsize = sizeof(uint32_t) + sizeof(ADISC);
J
James Smart 已提交
3588 3589
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3590
	if (!elsiocb)
3591
		return 1;
已提交
3592

3593 3594 3595 3596
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

已提交
3597
	/* Xmit ADISC ACC response tag <ulpIoTag> */
3598 3599 3600 3601 3602 3603
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0130 Xmit ADISC ACC response iotag x%x xri: "
			 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
已提交
3604 3605 3606
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3607
	pcmd += sizeof(uint32_t);
已提交
3608 3609 3610

	ap = (ADISC *) (pcmd);
	ap->hardAL_PA = phba->fc_pref_ALPA;
3611 3612
	memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
	memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
J
James Smart 已提交
3613
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
3614

J
James Smart 已提交
3615 3616 3617 3618
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"Issue ACC ADISC: did:x%x flg:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, 0);

已提交
3619
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3620
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3621
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3622 3623
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3624
		return 1;
已提交
3625
	}
3626
	return 0;
已提交
3627 3628
}

3629
/**
3630
 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647
 * @vport: pointer to a virtual N_Port data structure.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine prepares and issues an Accept (ACC) response to Process
 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the PRLI Accept response ELS IOCB command.
 *
 * Return code
 *   0 - Successfully issued acc prli response
 *   1 - Failed to issue acc prli response
 **/
已提交
3648
int
J
James Smart 已提交
3649
lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3650
		      struct lpfc_nodelist *ndlp)
已提交
3651
{
J
James Smart 已提交
3652
	struct lpfc_hba  *phba = vport->phba;
已提交
3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664
	PRLI *npr;
	lpfc_vpd_t *vpd;
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;

3665
	cmdsize = sizeof(uint32_t) + sizeof(PRLI);
J
James Smart 已提交
3666
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3667
		ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
3668 3669
	if (!elsiocb)
		return 1;
已提交
3670

3671 3672 3673
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3674
	/* Xmit PRLI ACC response tag <ulpIoTag> */
3675 3676 3677 3678 3679 3680
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
			 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
已提交
3681 3682 3683
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
3684
	pcmd += sizeof(uint32_t);
已提交
3685 3686

	/* For PRLI, remainder of payload is PRLI parameter page */
3687
	memset(pcmd, 0, sizeof(PRLI));
已提交
3688 3689 3690 3691

	npr = (PRLI *) pcmd;
	vpd = &phba->vpd;
	/*
3692 3693
	 * If the remote port is a target and our firmware version is 3.20 or
	 * later, set the following bits for FC-TAPE support.
已提交
3694
	 */
3695 3696
	if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
	    (vpd->rev.feaLevelHigh >= 0x02)) {
已提交
3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709
		npr->ConfmComplAllowed = 1;
		npr->Retry = 1;
		npr->TaskRetryIdReq = 1;
	}

	npr->acceptRspCode = PRLI_REQ_EXECUTED;
	npr->estabImagePair = 1;
	npr->readXferRdyDis = 1;
	npr->ConfmComplAllowed = 1;

	npr->prliType = PRLI_FCP_TYPE;
	npr->initiatorFunc = 1;

J
James Smart 已提交
3710 3711 3712 3713
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"Issue ACC PRLI:  did:x%x flg:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, 0);

已提交
3714
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3715
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3716

3717
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3718 3719
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3720
		return 1;
已提交
3721
	}
3722
	return 0;
已提交
3723 3724
}

3725
/**
3726
 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750
 * @vport: pointer to a virtual N_Port data structure.
 * @format: rnid command format.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine issues a Request Node Identification Data (RNID) Accept
 * (ACC) response. It constructs the RNID ACC response command according to
 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
 * issue the response. Note that this command does not need to hold the ndlp
 * reference count for the callback. So, the ndlp reference count taken by
 * the lpfc_prep_els_iocb() routine is put back and the context1 field of
 * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that
 * there is no ndlp reference available.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function. However, for the RNID Accept Response ELS command,
 * this is undone later by this routine after the IOCB is allocated.
 *
 * Return code
 *   0 - Successfully issued acc rnid response
 *   1 - Failed to issue acc rnid response
 **/
已提交
3751
static int
J
James Smart 已提交
3752
lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
3753
		      struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
已提交
3754
{
J
James Smart 已提交
3755
	struct lpfc_hba  *phba = vport->phba;
已提交
3756
	RNID *rn;
J
James Smart 已提交
3757
	IOCB_t *icmd, *oldcmd;
已提交
3758 3759 3760 3761 3762 3763 3764
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
3765 3766
	cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
					+ (2 * sizeof(struct lpfc_name));
已提交
3767
	if (format)
3768
		cmdsize += sizeof(RNID_TOP_DISC);
已提交
3769

J
James Smart 已提交
3770 3771
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3772
	if (!elsiocb)
3773
		return 1;
已提交
3774

3775 3776 3777
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3778
	/* Xmit RNID ACC response tag <ulpIoTag> */
3779 3780 3781
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext);
已提交
3782 3783
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3784
	pcmd += sizeof(uint32_t);
已提交
3785

3786
	memset(pcmd, 0, sizeof(RNID));
已提交
3787 3788
	rn = (RNID *) (pcmd);
	rn->Format = format;
3789 3790 3791
	rn->CommonLen = (2 * sizeof(struct lpfc_name));
	memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
	memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
已提交
3792 3793 3794 3795 3796
	switch (format) {
	case 0:
		rn->SpecificLen = 0;
		break;
	case RNID_TOPOLOGY_DISC:
3797
		rn->SpecificLen = sizeof(RNID_TOP_DISC);
已提交
3798
		memcpy(&rn->un.topologyDisc.portName,
3799
		       &vport->fc_portname, sizeof(struct lpfc_name));
已提交
3800 3801 3802 3803 3804 3805 3806 3807 3808 3809
		rn->un.topologyDisc.unitType = RNID_HBA;
		rn->un.topologyDisc.physPort = 0;
		rn->un.topologyDisc.attachedNodes = 0;
		break;
	default:
		rn->CommonLen = 0;
		rn->SpecificLen = 0;
		break;
	}

J
James Smart 已提交
3810 3811 3812 3813
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"Issue ACC RNID:  did:x%x flg:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, 0);

已提交
3814
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3815
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3816
	lpfc_nlp_put(ndlp);
已提交
3817 3818 3819
	elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
				    * it could be freed */

3820
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3821 3822
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3823
		return 1;
已提交
3824
	}
3825
	return 0;
已提交
3826 3827
}

3828
/**
3829
 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues Address Discover (ADISC) ELS commands to those
 * N_Ports which are in node port recovery state and ADISC has not been issued
 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
 * IOCBs quit for later pick up. On the other hand, after walking through
 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
 * no more ADISC need to be sent.
 *
 * Return code
 *    The number of N_Ports with adisc issued.
 **/
已提交
3847
int
J
James Smart 已提交
3848
lpfc_els_disc_adisc(struct lpfc_vport *vport)
已提交
3849
{
J
James Smart 已提交
3850
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3851
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
3852
	int sentadisc = 0;
已提交
3853

3854
	/* go thru NPR nodes and issue any remaining ELS ADISCs */
J
James Smart 已提交
3855
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3856 3857
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
3858 3859 3860
		if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
		    (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
		    (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
J
James Smart 已提交
3861
			spin_lock_irq(shost->host_lock);
3862
			ndlp->nlp_flag &= ~NLP_NPR_ADISC;
J
James Smart 已提交
3863
			spin_unlock_irq(shost->host_lock);
3864
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
3865 3866
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, 0);
3867
			sentadisc++;
J
James Smart 已提交
3868 3869
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
3870
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
3871 3872 3873
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
3874
				break;
已提交
3875 3876 3877 3878
			}
		}
	}
	if (sentadisc == 0) {
J
James Smart 已提交
3879 3880 3881
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
3882
	}
3883
	return sentadisc;
已提交
3884 3885
}

3886
/**
3887
 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
 * which are in node port recovery state, with a @vport. Each time an ELS
 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
 * the per @vport number of discover count (num_disc_nodes) shall be
 * incremented. If the num_disc_nodes reaches a pre-configured threshold
 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
 * later pick up. On the other hand, after walking through all the ndlps with
 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
 * PLOGI need to be sent.
 *
 * Return code
 *   The number of N_Ports with plogi issued.
 **/
已提交
3905
int
J
James Smart 已提交
3906
lpfc_els_disc_plogi(struct lpfc_vport *vport)
已提交
3907
{
J
James Smart 已提交
3908
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3909
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
3910
	int sentplogi = 0;
已提交
3911

J
James Smart 已提交
3912 3913
	/* go thru NPR nodes and issue any remaining ELS PLOGIs */
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3914 3915
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
3916 3917 3918 3919 3920
		if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
		    (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
		    (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
		    (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
3921 3922
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
			lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
3923
			sentplogi++;
J
James Smart 已提交
3924 3925
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
3926
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
3927 3928 3929
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
3930
				break;
已提交
3931 3932 3933
			}
		}
	}
3934 3935 3936 3937
	if (sentplogi) {
		lpfc_set_disctmo(vport);
	}
	else {
J
James Smart 已提交
3938 3939 3940
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
3941
	}
3942
	return sentplogi;
已提交
3943 3944
}

3945
/**
3946
 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
3947 3948 3949 3950 3951 3952 3953
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine cleans up any Registration State Change Notification
 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
 * @vport together with the host_lock is used to prevent multiple thread
 * trying to access the RSCN array on a same @vport at the same time.
 **/
3954
void
J
James Smart 已提交
3955
lpfc_els_flush_rscn(struct lpfc_vport *vport)
已提交
3956
{
J
James Smart 已提交
3957 3958
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
3959 3960
	int i;

3961 3962 3963 3964 3965 3966 3967 3968 3969 3970
	spin_lock_irq(shost->host_lock);
	if (vport->fc_rscn_flush) {
		/* Another thread is walking fc_rscn_id_list on this vport */
		spin_unlock_irq(shost->host_lock);
		return;
	}
	/* Indicate we are walking lpfc_els_flush_rscn on this vport */
	vport->fc_rscn_flush = 1;
	spin_unlock_irq(shost->host_lock);

J
James Smart 已提交
3971
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3972
		lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
J
James Smart 已提交
3973
		vport->fc_rscn_id_list[i] = NULL;
已提交
3974
	}
J
James Smart 已提交
3975 3976 3977 3978 3979
	spin_lock_irq(shost->host_lock);
	vport->fc_rscn_id_cnt = 0;
	vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
	spin_unlock_irq(shost->host_lock);
	lpfc_can_disctmo(vport);
3980 3981
	/* Indicate we are done walking this fc_rscn_id_list */
	vport->fc_rscn_flush = 0;
已提交
3982 3983
}

3984
/**
3985
 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
3986 3987 3988 3989 3990 3991 3992 3993 3994 3995
 * @vport: pointer to a host virtual N_Port data structure.
 * @did: remote destination port identifier.
 *
 * This routine checks whether there is any pending Registration State
 * Configuration Notification (RSCN) to a @did on @vport.
 *
 * Return code
 *   None zero - The @did matched with a pending rscn
 *   0 - not able to match @did with a pending rscn
 **/
已提交
3996
int
J
James Smart 已提交
3997
lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
已提交
3998 3999 4000 4001
{
	D_ID ns_did;
	D_ID rscn_did;
	uint32_t *lp;
4002
	uint32_t payload_len, i;
4003
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
4004 4005 4006 4007 4008

	ns_did.un.word = did;

	/* Never match fabric nodes for RSCNs */
	if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
J
James Smart 已提交
4009
		return 0;
已提交
4010 4011

	/* If we are doing a FULL RSCN rediscovery, match everything */
J
James Smart 已提交
4012
	if (vport->fc_flag & FC_RSCN_DISCOVERY)
4013
		return did;
已提交
4014

4015 4016 4017 4018 4019 4020 4021 4022 4023
	spin_lock_irq(shost->host_lock);
	if (vport->fc_rscn_flush) {
		/* Another thread is walking fc_rscn_id_list on this vport */
		spin_unlock_irq(shost->host_lock);
		return 0;
	}
	/* Indicate we are walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 1;
	spin_unlock_irq(shost->host_lock);
J
James Smart 已提交
4024
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4025 4026 4027
		lp = vport->fc_rscn_id_list[i]->virt;
		payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
		payload_len -= sizeof(uint32_t);	/* take off word 0 */
已提交
4028
		while (payload_len) {
4029 4030
			rscn_did.un.word = be32_to_cpu(*lp++);
			payload_len -= sizeof(uint32_t);
4031 4032
			switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
			case RSCN_ADDRESS_FORMAT_PORT:
4033 4034 4035
				if ((ns_did.un.b.domain == rscn_did.un.b.domain)
				    && (ns_did.un.b.area == rscn_did.un.b.area)
				    && (ns_did.un.b.id == rscn_did.un.b.id))
4036
					goto return_did_out;
已提交
4037
				break;
4038
			case RSCN_ADDRESS_FORMAT_AREA:
已提交
4039 4040
				if ((ns_did.un.b.domain == rscn_did.un.b.domain)
				    && (ns_did.un.b.area == rscn_did.un.b.area))
4041
					goto return_did_out;
已提交
4042
				break;
4043
			case RSCN_ADDRESS_FORMAT_DOMAIN:
已提交
4044
				if (ns_did.un.b.domain == rscn_did.un.b.domain)
4045
					goto return_did_out;
已提交
4046
				break;
4047
			case RSCN_ADDRESS_FORMAT_FABRIC:
4048
				goto return_did_out;
已提交
4049 4050
			}
		}
4051
	}
4052 4053
	/* Indicate we are done with walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
4054
	return 0;
4055 4056 4057 4058
return_did_out:
	/* Indicate we are done with walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
	return did;
已提交
4059 4060
}

4061
/**
4062
 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
4063 4064 4065 4066 4067 4068 4069 4070 4071
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
 * state machine for a @vport's nodes that are with pending RSCN (Registration
 * State Change Notification).
 *
 * Return code
 *   0 - Successful (currently alway return 0)
 **/
已提交
4072
static int
J
James Smart 已提交
4073
lpfc_rscn_recovery_check(struct lpfc_vport *vport)
已提交
4074
{
4075
	struct lpfc_nodelist *ndlp = NULL;
已提交
4076

4077
	/* Move all affected nodes by pending RSCNs to NPR state. */
J
James Smart 已提交
4078
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4079
		if (!NLP_CHK_NODE_ACT(ndlp) ||
4080 4081
		    (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
		    !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
4082
			continue;
J
James Smart 已提交
4083
		lpfc_disc_state_machine(vport, ndlp, NULL,
4084 4085
					NLP_EVT_DEVICE_RECOVERY);
		lpfc_cancel_retry_delay_tmo(vport, ndlp);
已提交
4086
	}
4087
	return 0;
已提交
4088 4089
}

4090
/**
4091
 * lpfc_send_rscn_event - Send an RSCN event to management application
4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 *
 * lpfc_send_rscn_event sends an RSCN netlink event to management
 * applications.
 */
static void
lpfc_send_rscn_event(struct lpfc_vport *vport,
		struct lpfc_iocbq *cmdiocb)
{
	struct lpfc_dmabuf *pcmd;
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	uint32_t *payload_ptr;
	uint32_t payload_len;
	struct lpfc_rscn_event_header *rscn_event_data;

	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	payload_ptr = (uint32_t *) pcmd->virt;
	payload_len = be32_to_cpu(*payload_ptr & ~ELS_CMD_MASK);

	rscn_event_data = kmalloc(sizeof(struct lpfc_rscn_event_header) +
		payload_len, GFP_KERNEL);
	if (!rscn_event_data) {
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
			"0147 Failed to allocate memory for RSCN event\n");
		return;
	}
	rscn_event_data->event_type = FC_REG_RSCN_EVENT;
	rscn_event_data->payload_length = payload_len;
	memcpy(rscn_event_data->rscn_payload, payload_ptr,
		payload_len);

	fc_host_post_vendor_event(shost,
		fc_get_event_number(),
		sizeof(struct lpfc_els_event_header) + payload_len,
		(char *)rscn_event_data,
		LPFC_NL_VENDOR_ID);

	kfree(rscn_event_data);
}

4133
/**
4134
 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes an unsolicited RSCN (Registration State Change
 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
 * to invoke fc_host_post_event() routine to the FC transport layer. If the
 * discover state machine is about to begin discovery, it just accepts the
 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
 * contains N_Port IDs for other vports on this HBA, it just accepts the
 * RSCN and ignore processing it. If the state machine is in the recovery
 * state, the fc_rscn_id_list of this @vport is walked and the
 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
 * routine is invoked to handle the RSCN event.
 *
 * Return code
 *   0 - Just sent the acc response
 *   1 - Sent the acc response and waited for name server completion
 **/
已提交
4155
static int
J
James Smart 已提交
4156
lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4157
		  struct lpfc_nodelist *ndlp)
已提交
4158
{
J
James Smart 已提交
4159 4160
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4161
	struct lpfc_dmabuf *pcmd;
4162
	uint32_t *lp, *datap;
已提交
4163
	IOCB_t *icmd;
4164
	uint32_t payload_len, length, nportid, *cmd;
4165
	int rscn_cnt;
4166
	int rscn_id = 0, hba_id = 0;
4167
	int i;
已提交
4168 4169 4170 4171 4172

	icmd = &cmdiocb->iocb;
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;

4173 4174
	payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
	payload_len -= sizeof(uint32_t);	/* take off word 0 */
已提交
4175
	/* RSCN received */
4176 4177
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4178 4179
			 vport->fc_flag, payload_len, *lp,
			 vport->fc_rscn_id_cnt);
4180 4181 4182 4183

	/* Send an RSCN event to the management application */
	lpfc_send_rscn_event(vport, cmdiocb);

4184
	for (i = 0; i < payload_len/sizeof(uint32_t); i++)
J
James Smart 已提交
4185
		fc_host_post_event(shost, fc_get_event_number(),
4186 4187
			FCH_EVT_RSCN, lp[i]);

已提交
4188 4189 4190
	/* If we are about to begin discovery, just ACC the RSCN.
	 * Discovery processing will satisfy it.
	 */
J
James Smart 已提交
4191
	if (vport->port_state <= LPFC_NS_QRY) {
J
James Smart 已提交
4192 4193 4194 4195
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
			ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);

4196
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4197
		return 0;
已提交
4198 4199
	}

4200 4201 4202 4203
	/* If this RSCN just contains NPortIDs for other vports on this HBA,
	 * just ACC and ignore it.
	 */
	if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4204
		!(vport->cfg_peer_port_login)) {
4205 4206 4207 4208 4209 4210 4211
		i = payload_len;
		datap = lp;
		while (i > 0) {
			nportid = *datap++;
			nportid = ((be32_to_cpu(nportid)) & Mask_DID);
			i -= sizeof(uint32_t);
			rscn_id++;
4212 4213
			if (lpfc_find_vport_by_did(phba, nportid))
				hba_id++;
4214 4215 4216
		}
		if (rscn_id == hba_id) {
			/* ALL NPortIDs in RSCN are on HBA */
4217
			lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4218
					 "0219 Ignore RSCN "
4219 4220
					 "Data: x%x x%x x%x x%x\n",
					 vport->fc_flag, payload_len,
4221
					 *lp, vport->fc_rscn_id_cnt);
J
James Smart 已提交
4222 4223 4224 4225 4226
			lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
				"RCV RSCN vport:  did:x%x/ste:x%x flg:x%x",
				ndlp->nlp_DID, vport->port_state,
				ndlp->nlp_flag);

4227
			lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4228
				ndlp, NULL);
4229 4230 4231 4232
			return 0;
		}
	}

4233 4234 4235 4236
	spin_lock_irq(shost->host_lock);
	if (vport->fc_rscn_flush) {
		/* Another thread is walking fc_rscn_id_list on this vport */
		vport->fc_flag |= FC_RSCN_DISCOVERY;
4237
		spin_unlock_irq(shost->host_lock);
4238 4239
		/* Send back ACC */
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4240 4241 4242 4243 4244
		return 0;
	}
	/* Indicate we are walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 1;
	spin_unlock_irq(shost->host_lock);
4245
	/* Get the array count after successfully have the token */
4246
	rscn_cnt = vport->fc_rscn_id_cnt;
已提交
4247 4248 4249
	/* If we are already processing an RSCN, save the received
	 * RSCN payload buffer, cmdiocb->context2 to process later.
	 */
J
James Smart 已提交
4250
	if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
J
James Smart 已提交
4251 4252 4253 4254
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RSCN defer:  did:x%x/ste:x%x flg:x%x",
			ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);

4255
		spin_lock_irq(shost->host_lock);
4256 4257
		vport->fc_flag |= FC_RSCN_DEFERRED;
		if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
J
James Smart 已提交
4258 4259 4260
		    !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
			vport->fc_flag |= FC_RSCN_MODE;
			spin_unlock_irq(shost->host_lock);
4261 4262 4263 4264 4265 4266 4267
			if (rscn_cnt) {
				cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
				length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
			}
			if ((rscn_cnt) &&
			    (payload_len + length <= LPFC_BPL_SIZE)) {
				*cmd &= ELS_CMD_MASK;
4268
				*cmd |= cpu_to_be32(payload_len + length);
4269 4270 4271 4272 4273 4274 4275 4276 4277 4278
				memcpy(((uint8_t *)cmd) + length, lp,
				       payload_len);
			} else {
				vport->fc_rscn_id_list[rscn_cnt] = pcmd;
				vport->fc_rscn_id_cnt++;
				/* If we zero, cmdiocb->context2, the calling
				 * routine will not try to free it.
				 */
				cmdiocb->context2 = NULL;
			}
已提交
4279
			/* Deferred RSCN */
4280 4281 4282 4283 4284
			lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
					 "0235 Deferred RSCN "
					 "Data: x%x x%x x%x\n",
					 vport->fc_rscn_id_cnt, vport->fc_flag,
					 vport->port_state);
已提交
4285
		} else {
J
James Smart 已提交
4286 4287
			vport->fc_flag |= FC_RSCN_DISCOVERY;
			spin_unlock_irq(shost->host_lock);
已提交
4288
			/* ReDiscovery RSCN */
4289 4290 4291 4292 4293
			lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
					 "0234 ReDiscovery RSCN "
					 "Data: x%x x%x x%x\n",
					 vport->fc_rscn_id_cnt, vport->fc_flag,
					 vport->port_state);
已提交
4294
		}
4295 4296
		/* Indicate we are done walking fc_rscn_id_list on this vport */
		vport->fc_rscn_flush = 0;
已提交
4297
		/* Send back ACC */
4298
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4299
		/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4300
		lpfc_rscn_recovery_check(vport);
4301
		spin_lock_irq(shost->host_lock);
4302
		vport->fc_flag &= ~FC_RSCN_DEFERRED;
4303
		spin_unlock_irq(shost->host_lock);
4304
		return 0;
已提交
4305
	}
J
James Smart 已提交
4306 4307 4308 4309
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
		"RCV RSCN:        did:x%x/ste:x%x flg:x%x",
		ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);

J
James Smart 已提交
4310 4311 4312 4313
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_RSCN_MODE;
	spin_unlock_irq(shost->host_lock);
	vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
4314 4315
	/* Indicate we are done walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
已提交
4316 4317 4318 4319 4320
	/*
	 * If we zero, cmdiocb->context2, the calling routine will
	 * not try to free it.
	 */
	cmdiocb->context2 = NULL;
J
James Smart 已提交
4321
	lpfc_set_disctmo(vport);
已提交
4322
	/* Send back ACC */
4323
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4324
	/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4325 4326
	lpfc_rscn_recovery_check(vport);
	return lpfc_els_handle_rscn(vport);
已提交
4327 4328
}

4329
/**
4330
 * lpfc_els_handle_rscn - Handle rscn for a vport
4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine handles the Registration State Configuration Notification
 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
 * NameServer shall be issued. If CT command to the NameServer fails to be
 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
 * RSCN activities with the @vport.
 *
 * Return code
 *   0 - Cleaned up rscn on the @vport
 *   1 - Wait for plogi to name server before proceed
 **/
已提交
4345
int
J
James Smart 已提交
4346
lpfc_els_handle_rscn(struct lpfc_vport *vport)
已提交
4347 4348
{
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
4349
	struct lpfc_hba *phba = vport->phba;
已提交
4350

4351 4352 4353 4354 4355 4356
	/* Ignore RSCN if the port is being torn down. */
	if (vport->load_flag & FC_UNLOADING) {
		lpfc_els_flush_rscn(vport);
		return 0;
	}

已提交
4357
	/* Start timer for RSCN processing */
J
James Smart 已提交
4358
	lpfc_set_disctmo(vport);
已提交
4359 4360

	/* RSCN processed */
4361 4362 4363 4364
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0215 RSCN processed Data: x%x x%x x%x x%x\n",
			 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
			 vport->port_state);
已提交
4365 4366

	/* To process RSCN, first compare RSCN data with NameServer */
J
James Smart 已提交
4367
	vport->fc_ns_retry = 0;
4368 4369
	vport->num_disc_nodes = 0;

J
James Smart 已提交
4370
	ndlp = lpfc_findnode_did(vport, NameServer_DID);
4371 4372
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)
	    && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
已提交
4373
		/* Good ndlp, issue CT Request to NameServer */
4374
		if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
已提交
4375 4376
			/* Wait for NameServer query cmpl before we can
			   continue */
4377
			return 1;
已提交
4378 4379 4380
	} else {
		/* If login to NameServer does not exist, issue one */
		/* Good status, issue PLOGI to NameServer */
J
James Smart 已提交
4381
		ndlp = lpfc_findnode_did(vport, NameServer_DID);
4382
		if (ndlp && NLP_CHK_NODE_ACT(ndlp))
已提交
4383 4384
			/* Wait for NameServer login cmpl before we can
			   continue */
4385
			return 1;
J
James Smart 已提交
4386

4387 4388 4389 4390 4391 4392 4393 4394
		if (ndlp) {
			ndlp = lpfc_enable_node(vport, ndlp,
						NLP_STE_PLOGI_ISSUE);
			if (!ndlp) {
				lpfc_els_flush_rscn(vport);
				return 0;
			}
			ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
已提交
4395
		} else {
4396 4397 4398 4399 4400
			ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
			if (!ndlp) {
				lpfc_els_flush_rscn(vport);
				return 0;
			}
J
James Smart 已提交
4401
			lpfc_nlp_init(vport, ndlp, NameServer_DID);
4402
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
4403
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
已提交
4404
		}
4405 4406 4407 4408 4409 4410
		ndlp->nlp_type |= NLP_FABRIC;
		lpfc_issue_els_plogi(vport, NameServer_DID, 0);
		/* Wait for NameServer login cmpl before we can
		 * continue
		 */
		return 1;
已提交
4411 4412
	}

J
James Smart 已提交
4413
	lpfc_els_flush_rscn(vport);
4414
	return 0;
已提交
4415 4416
}

4417
/**
4418
 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
 * point topology. As an unsolicited FLOGI should not be received in a loop
 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
 * lpfc_check_sparm() routine is invoked to check the parameters in the
 * unsolicited FLOGI. If parameters validation failed, the routine
 * lpfc_els_rsp_reject() shall be called with reject reason code set to
 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
 * FLOGI shall be compared with the Port WWN of the @vport to determine who
 * will initiate PLOGI. The higher lexicographical value party shall has
 * higher priority (as the winning port) and will initiate PLOGI and
 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
 *
 * Return code
 *   0 - Successfully processed the unsolicited flogi
 *   1 - Failed to process the unsolicited flogi
 **/
已提交
4442
static int
J
James Smart 已提交
4443
lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4444
		   struct lpfc_nodelist *ndlp)
已提交
4445
{
J
James Smart 已提交
4446 4447
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461
	struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	uint32_t *lp = (uint32_t *) pcmd->virt;
	IOCB_t *icmd = &cmdiocb->iocb;
	struct serv_parm *sp;
	LPFC_MBOXQ_t *mbox;
	struct ls_rjt stat;
	uint32_t cmd, did;
	int rc;

	cmd = *lp++;
	sp = (struct serv_parm *) lp;

	/* FLOGI received */

J
James Smart 已提交
4462
	lpfc_set_disctmo(vport);
已提交
4463 4464 4465 4466 4467 4468 4469

	if (phba->fc_topology == TOPOLOGY_LOOP) {
		/* We should never receive a FLOGI in loop mode, ignore it */
		did = icmd->un.elsreq64.remoteID;

		/* An FLOGI ELS command <elsCmd> was received from DID <did> in
		   Loop Mode */
4470 4471 4472 4473
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0113 An FLOGI ELS command x%x was "
				 "received from DID x%x in Loop Mode\n",
				 cmd, did);
4474
		return 1;
已提交
4475 4476 4477 4478
	}

	did = Fabric_DID;

4479
	if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1))) {
已提交
4480 4481 4482 4483
		/* For a FLOGI we accept, then if our portname is greater
		 * then the remote portname we initiate Nport login.
		 */

J
James Smart 已提交
4484
		rc = memcmp(&vport->fc_portname, &sp->portName,
4485
			    sizeof(struct lpfc_name));
已提交
4486 4487

		if (!rc) {
J
James Smart 已提交
4488 4489
			mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
			if (!mbox)
4490
				return 1;
J
James Smart 已提交
4491

已提交
4492 4493 4494 4495
			lpfc_linkdown(phba);
			lpfc_init_link(phba, mbox,
				       phba->cfg_topology,
				       phba->cfg_link_speed);
4496
			mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
已提交
4497
			mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4498
			mbox->vport = vport;
4499
			rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4500
			lpfc_set_loopback_flag(phba);
已提交
4501
			if (rc == MBX_NOT_FINISHED) {
4502
				mempool_free(mbox, phba->mbox_mem_pool);
已提交
4503
			}
4504
			return 1;
4505
		} else if (rc > 0) {	/* greater than */
J
James Smart 已提交
4506 4507 4508
			spin_lock_irq(shost->host_lock);
			vport->fc_flag |= FC_PT2PT_PLOGI;
			spin_unlock_irq(shost->host_lock);
已提交
4509
		}
J
James Smart 已提交
4510 4511 4512 4513
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PT2PT;
		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
		spin_unlock_irq(shost->host_lock);
已提交
4514 4515 4516 4517 4518 4519
	} else {
		/* Reject this request because invalid parameters */
		stat.un.b.lsRjtRsvd0 = 0;
		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
		stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
		stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4520 4521
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
4522
		return 1;
已提交
4523 4524 4525
	}

	/* Send back ACC */
4526
	lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
已提交
4527

4528
	return 0;
已提交
4529 4530
}

4531
/**
4532
 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Request Node Identification Data (RNID) IOCB
 * received as an ELS unsolicited event. Only when the RNID specified format
 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
 * Accept (ACC) the RNID ELS command. All the other RNID formats are
 * rejected by invoking the lpfc_els_rsp_reject() routine.
 *
 * Return code
 *   0 - Successfully processed rnid iocb (currently always return 0)
 **/
已提交
4547
static int
J
James Smart 已提交
4548 4549
lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	IOCB_t *icmd;
	RNID *rn;
	struct ls_rjt stat;
	uint32_t cmd, did;

	icmd = &cmdiocb->iocb;
	did = icmd->un.elsreq64.remoteID;
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;

	cmd = *lp++;
	rn = (RNID *) lp;

	/* RNID received */

	switch (rn->Format) {
	case 0:
	case RNID_TOPOLOGY_DISC:
		/* Send back ACC */
J
James Smart 已提交
4572
		lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
已提交
4573 4574 4575 4576 4577 4578 4579
		break;
	default:
		/* Reject this request because format not supported */
		stat.un.b.lsRjtRsvd0 = 0;
		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
		stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
		stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4580 4581
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
已提交
4582
	}
4583
	return 0;
已提交
4584 4585
}

4586
/**
4587
 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes a Link Incident Report Registration(LIRR) IOCB
 * received as an ELS unsolicited event. Currently, this function just invokes
 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
 *
 * Return code
 *   0 - Successfully processed lirr iocb (currently always return 0)
 **/
已提交
4599
static int
J
James Smart 已提交
4600 4601
lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
4602 4603 4604 4605 4606 4607 4608 4609
{
	struct ls_rjt stat;

	/* For now, unconditionally reject this command */
	stat.un.b.lsRjtRsvd0 = 0;
	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
	stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
	stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4610
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4611 4612 4613
	return 0;
}

4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636
/**
 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
 * received as an ELS unsolicited event. A request to RRQ shall only
 * be accepted if the Originator Nx_Port N_Port_ID or the Responder
 * Nx_Port N_Port_ID of the target Exchange is the same as the
 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
 * not accepted, an LS_RJT with reason code "Unable to perform
 * command request" and reason code explanation "Invalid Originator
 * S_ID" shall be returned. For now, we just unconditionally accept
 * RRQ from the target.
 **/
static void
lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
{
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
}

4637
/**
4638
 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655
 * @phba: pointer to lpfc hba data structure.
 * @pmb: pointer to the driver internal queue element for mailbox command.
 *
 * This routine is the completion callback function for the MBX_READ_LNK_STAT
 * mailbox command. This callback function is to actually send the Accept
 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
 * mailbox command, constructs the RPS response with the link statistics
 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
 * response to the RPS.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the RPS Accept Response ELS IOCB command.
 *
 **/
4656
static void
4657
lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4658 4659 4660 4661 4662 4663 4664 4665 4666 4667
{
	MAILBOX_t *mb;
	IOCB_t *icmd;
	RPS_RSP *rps_rsp;
	uint8_t *pcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_nodelist *ndlp;
	uint16_t xri, status;
	uint32_t cmdsize;

4668
	mb = &pmb->u.mb;
4669 4670 4671

	ndlp = (struct lpfc_nodelist *) pmb->context2;
	xri = (uint16_t) ((unsigned long)(pmb->context1));
R
Randy Dunlap 已提交
4672 4673
	pmb->context1 = NULL;
	pmb->context2 = NULL;
4674 4675

	if (mb->mbxStatus) {
4676
		mempool_free(pmb, phba->mbox_mem_pool);
4677 4678 4679 4680
		return;
	}

	cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
4681
	mempool_free(pmb, phba->mbox_mem_pool);
J
James Smart 已提交
4682 4683 4684
	elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
				     lpfc_max_els_tries, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
4685 4686

	/* Decrement the ndlp reference count from previous mbox command */
4687
	lpfc_nlp_put(ndlp);
4688

4689
	if (!elsiocb)
4690 4691 4692 4693 4694 4695 4696
		return;

	icmd = &elsiocb->iocb;
	icmd->ulpContext = xri;

	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4697
	pcmd += sizeof(uint32_t); /* Skip past command */
4698 4699 4700 4701 4702 4703
	rps_rsp = (RPS_RSP *)pcmd;

	if (phba->fc_topology != TOPOLOGY_LOOP)
		status = 0x10;
	else
		status = 0x8;
J
James Smart 已提交
4704
	if (phba->pport->fc_flag & FC_FABRIC)
4705 4706 4707
		status |= 0x4;

	rps_rsp->rsvd1 = 0;
4708 4709 4710 4711 4712 4713 4714
	rps_rsp->portStatus = cpu_to_be16(status);
	rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
	rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
	rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
	rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
	rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
	rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
4715
	/* Xmit ELS RPS ACC response tag <ulpIoTag> */
4716 4717 4718 4719 4720 4721
	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
			 "0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
			 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
J
James Smart 已提交
4722
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4723
	phba->fc_stat.elsXmitACC++;
4724
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
4725 4726 4727 4728
		lpfc_els_free_iocb(phba, elsiocb);
	return;
}

4729
/**
4730
 * lpfc_els_rcv_rps - Process an unsolicited rps iocb
4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Read Port Status (RPS) IOCB received as an
 * ELS unsolicited event. It first checks the remote port state. If the
 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
 * state, it invokes the lpfc_els_rsp_reject() routine to send the reject
 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
 * for reading the HBA link statistics. It is for the callback function,
 * lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
 * to actually sending out RPS Accept (ACC) response.
 *
 * Return codes
 *   0 - Successfully processed rps iocb (currently always return 0)
 **/
4747
static int
J
James Smart 已提交
4748 4749
lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
已提交
4750
{
J
James Smart 已提交
4751
	struct lpfc_hba *phba = vport->phba;
已提交
4752
	uint32_t *lp;
4753 4754 4755 4756 4757 4758
	uint8_t flag;
	LPFC_MBOXQ_t *mbox;
	struct lpfc_dmabuf *pcmd;
	RPS *rps;
	struct ls_rjt stat;

4759
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4760 4761 4762
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
		/* reject the unsolicited RPS request and done with it */
		goto reject_out;
4763 4764 4765 4766 4767 4768 4769 4770

	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;
	flag = (be32_to_cpu(*lp++) & 0xf);
	rps = (RPS *) lp;

	if ((flag == 0) ||
	    ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
J
James Smart 已提交
4771
	    ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
4772
				    sizeof(struct lpfc_name)) == 0))) {
J
James Smart 已提交
4773

4774 4775
		printk("Fix me....\n");
		dump_stack();
J
James Smart 已提交
4776 4777
		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
		if (mbox) {
4778 4779
			lpfc_read_lnk_stat(phba, mbox);
			mbox->context1 =
4780
			    (void *)((unsigned long) cmdiocb->iocb.ulpContext);
4781
			mbox->context2 = lpfc_nlp_get(ndlp);
4782
			mbox->vport = vport;
4783
			mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
4784
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
4785
				!= MBX_NOT_FINISHED)
4786 4787
				/* Mbox completion will send ELS Response */
				return 0;
4788 4789 4790
			/* Decrement reference count used for the failed mbox
			 * command.
			 */
4791
			lpfc_nlp_put(ndlp);
4792 4793 4794
			mempool_free(mbox, phba->mbox_mem_pool);
		}
	}
4795 4796 4797

reject_out:
	/* issue rejection response */
4798 4799 4800 4801
	stat.un.b.lsRjtRsvd0 = 0;
	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
	stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
	stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4802
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4803 4804 4805
	return 0;
}

4806
/**
4807
 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdsize: size of the ELS command.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the RPL Accept Response ELS command.
 *
 * Return code
 *   0 - Successfully issued ACC RPL ELS command
 *   1 - Failed to issue ACC RPL ELS command
 **/
4825
static int
J
James Smart 已提交
4826 4827
lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
		     struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4828
{
J
James Smart 已提交
4829 4830
	struct lpfc_hba *phba = vport->phba;
	IOCB_t *icmd, *oldcmd;
4831 4832 4833
	RPL_RSP rpl_rsp;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
已提交
4834

J
James Smart 已提交
4835 4836
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
4837

4838
	if (!elsiocb)
4839
		return 1;
4840

4841 4842 4843 4844 4845 4846
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

	pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4847
	pcmd += sizeof(uint16_t);
4848 4849 4850 4851 4852 4853 4854
	*((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
	pcmd += sizeof(uint16_t);

	/* Setup the RPL ACC payload */
	rpl_rsp.listLen = be32_to_cpu(1);
	rpl_rsp.index = 0;
	rpl_rsp.port_num_blk.portNum = 0;
J
James Smart 已提交
4855 4856
	rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
	memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
4857 4858 4859
	    sizeof(struct lpfc_name));
	memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
	/* Xmit ELS RPL ACC response tag <ulpIoTag> */
4860 4861 4862 4863 4864 4865 4866
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0120 Xmit ELS RPL ACC response tag x%x "
			 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
			 "rpi x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
J
James Smart 已提交
4867
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4868
	phba->fc_stat.elsXmitACC++;
4869 4870
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
4871 4872 4873 4874 4875 4876
		lpfc_els_free_iocb(phba, elsiocb);
		return 1;
	}
	return 0;
}

4877
/**
4878
 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Read Port List (RPL) IOCB received as an ELS
 * unsolicited event. It first checks the remote port state. If the remote
 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
 * invokes the lpfc_els_rsp_reject() routine to send reject response.
 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
 * to accept the RPL.
 *
 * Return code
 *   0 - Successfully processed rpl iocb (currently always return 0)
 **/
4893
static int
J
James Smart 已提交
4894 4895
lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
4896 4897 4898 4899 4900 4901 4902 4903
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	uint32_t maxsize;
	uint16_t cmdsize;
	RPL *rpl;
	struct ls_rjt stat;

4904 4905
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
4906
		/* issue rejection response */
4907 4908 4909 4910
		stat.un.b.lsRjtRsvd0 = 0;
		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
		stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
		stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4911 4912
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
4913 4914
		/* rejected the unsolicited RPL request and done with it */
		return 0;
4915 4916
	}

已提交
4917 4918
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;
4919
	rpl = (RPL *) (lp + 1);
已提交
4920

4921
	maxsize = be32_to_cpu(rpl->maxsize);
已提交
4922

4923 4924 4925 4926 4927
	/* We support only one port */
	if ((rpl->index == 0) &&
	    ((maxsize == 0) ||
	     ((maxsize * sizeof(uint32_t)) >= sizeof(RPL_RSP)))) {
		cmdsize = sizeof(uint32_t) + sizeof(RPL_RSP);
4928
	} else {
4929 4930
		cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
	}
J
James Smart 已提交
4931
	lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
已提交
4932 4933 4934 4935

	return 0;
}

4936
/**
4937
 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959
 * @vport: pointer to a virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Fibre Channel Address Resolution Protocol
 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
 * remote PortName is compared against the FC PortName stored in the @vport
 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
 * compared against the FC NodeName stored in the @vport data structure.
 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
 * invoked to send out FARP Response to the remote node. Before sending the
 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
 * routine is invoked to log into the remote port first.
 *
 * Return code
 *   0 - Either the FARP Match Mode not supported or successfully processed
 **/
已提交
4960
static int
J
James Smart 已提交
4961 4962
lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	IOCB_t *icmd;
	FARP *fp;
	uint32_t cmd, cnt, did;

	icmd = &cmdiocb->iocb;
	did = icmd->un.elsreq64.remoteID;
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;

	cmd = *lp++;
	fp = (FARP *) lp;
	/* FARP-REQ received from DID <did> */
4978 4979
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0601 FARP-REQ received from DID x%x\n", did);
已提交
4980 4981
	/* We will only support match on WWPN or WWNN */
	if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
4982
		return 0;
已提交
4983 4984 4985 4986 4987
	}

	cnt = 0;
	/* If this FARP command is searching for my portname */
	if (fp->Mflags & FARP_MATCH_PORT) {
J
James Smart 已提交
4988
		if (memcmp(&fp->RportName, &vport->fc_portname,
4989
			   sizeof(struct lpfc_name)) == 0)
已提交
4990 4991 4992 4993 4994
			cnt = 1;
	}

	/* If this FARP command is searching for my nodename */
	if (fp->Mflags & FARP_MATCH_NODE) {
J
James Smart 已提交
4995
		if (memcmp(&fp->RnodeName, &vport->fc_nodename,
4996
			   sizeof(struct lpfc_name)) == 0)
已提交
4997 4998 4999 5000 5001 5002 5003 5004
			cnt = 1;
	}

	if (cnt) {
		if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) ||
		   (ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
			/* Log back into the node before sending the FARP. */
			if (fp->Rflags & FARP_REQUEST_PLOGI) {
5005
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
5006
				lpfc_nlp_set_state(vport, ndlp,
5007
						   NLP_STE_PLOGI_ISSUE);
J
James Smart 已提交
5008
				lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
已提交
5009 5010 5011
			}

			/* Send a FARP response to that node */
J
James Smart 已提交
5012 5013
			if (fp->Rflags & FARP_REQUEST_FARPR)
				lpfc_issue_els_farpr(vport, did, 0);
已提交
5014 5015
		}
	}
5016
	return 0;
已提交
5017 5018
}

5019
/**
5020
 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Fibre Channel Address Resolution Protocol
 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
 * the FARP response request.
 *
 * Return code
 *   0 - Successfully processed FARPR IOCB (currently always return 0)
 **/
已提交
5033
static int
J
James Smart 已提交
5034 5035
lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_nodelist  *ndlp)
已提交
5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	IOCB_t *icmd;
	uint32_t cmd, did;

	icmd = &cmdiocb->iocb;
	did = icmd->un.elsreq64.remoteID;
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;

	cmd = *lp++;
	/* FARP-RSP received from DID <did> */
5049 5050
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0600 FARP-RSP received from DID x%x\n", did);
已提交
5051
	/* ACCEPT the Farp resp request */
5052
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
5053 5054 5055 5056

	return 0;
}

5057
/**
5058
 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @fan_ndlp: pointer to a node-list data structure.
 *
 * This routine processes a Fabric Address Notification (FAN) IOCB
 * command received as an ELS unsolicited event. The FAN ELS command will
 * only be processed on a physical port (i.e., the @vport represents the
 * physical port). The fabric NodeName and PortName from the FAN IOCB are
 * compared against those in the phba data structure. If any of those is
 * different, the lpfc_initial_flogi() routine is invoked to initialize
 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
 * is invoked to register login to the fabric.
 *
 * Return code
 *   0 - Successfully processed fan iocb (currently always return 0).
 **/
已提交
5076
static int
J
James Smart 已提交
5077 5078
lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *fan_ndlp)
已提交
5079
{
5080
	struct lpfc_hba *phba = vport->phba;
已提交
5081
	uint32_t *lp;
5082
	FAN *fp;
已提交
5083

5084 5085 5086
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
	lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
	fp = (FAN *) ++lp;
5087
	/* FAN received; Fan does not have a reply sequence */
5088 5089
	if ((vport == phba->pport) &&
	    (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
5090
		if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
5091
			    sizeof(struct lpfc_name))) ||
5092
		    (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
5093 5094
			    sizeof(struct lpfc_name)))) {
			/* This port has switched fabrics. FLOGI is required */
J
James Smart 已提交
5095
			lpfc_initial_flogi(vport);
5096 5097 5098
		} else {
			/* FAN verified - skip FLOGI */
			vport->fc_myDID = vport->fc_prevDID;
5099 5100 5101 5102
			if (phba->sli_rev < LPFC_SLI_REV4)
				lpfc_issue_fabric_reglogin(vport);
			else
				lpfc_issue_reg_vfi(vport);
5103
		}
已提交
5104
	}
5105
	return 0;
已提交
5106 5107
}

5108
/**
5109
 * lpfc_els_timeout - Handler funciton to the els timer
5110 5111 5112 5113 5114 5115 5116 5117
 * @ptr: holder for the timer function associated data.
 *
 * This routine is invoked by the ELS timer after timeout. It posts the ELS
 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
 * up the worker thread. It is for the worker thread to invoke the routine
 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
 **/
已提交
5118 5119 5120
void
lpfc_els_timeout(unsigned long ptr)
{
J
James Smart 已提交
5121 5122
	struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
	struct lpfc_hba   *phba = vport->phba;
5123
	uint32_t tmo_posted;
已提交
5124 5125
	unsigned long iflag;

J
James Smart 已提交
5126
	spin_lock_irqsave(&vport->work_port_lock, iflag);
5127 5128
	tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
	if (!tmo_posted)
J
James Smart 已提交
5129
		vport->work_port_events |= WORKER_ELS_TMO;
5130
	spin_unlock_irqrestore(&vport->work_port_lock, iflag);
5131

5132 5133
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
已提交
5134 5135 5136
	return;
}

5137
/**
5138
 * lpfc_els_timeout_handler - Process an els timeout event
5139 5140 5141 5142 5143 5144 5145
 * @vport: pointer to a virtual N_Port data structure.
 *
 * This routine is the actual handler function that processes an ELS timeout
 * event. It walks the ELS ring to get and abort all the IOCBs (except the
 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
 * invoking the lpfc_sli_issue_abort_iotag() routine.
 **/
已提交
5146
void
J
James Smart 已提交
5147
lpfc_els_timeout_handler(struct lpfc_vport *vport)
已提交
5148
{
J
James Smart 已提交
5149
	struct lpfc_hba  *phba = vport->phba;
已提交
5150 5151 5152 5153
	struct lpfc_sli_ring *pring;
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;
	struct lpfc_dmabuf *pcmd;
J
James Smart 已提交
5154
	uint32_t els_command = 0;
已提交
5155
	uint32_t timeout;
J
James Smart 已提交
5156
	uint32_t remote_ID = 0xffffffff;
已提交
5157

J
James Smart 已提交
5158
	spin_lock_irq(&phba->hbalock);
已提交
5159 5160 5161 5162 5163 5164 5165
	timeout = (uint32_t)(phba->fc_ratov << 1);

	pring = &phba->sli.ring[LPFC_ELS_RING];

	list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
		cmd = &piocb->iocb;

J
James Smart 已提交
5166 5167 5168
		if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
		    piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
		    piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
已提交
5169
			continue;
J
James Smart 已提交
5170 5171 5172 5173

		if (piocb->vport != vport)
			continue;

已提交
5174
		pcmd = (struct lpfc_dmabuf *) piocb->context2;
J
James Smart 已提交
5175 5176
		if (pcmd)
			els_command = *(uint32_t *) (pcmd->virt);
已提交
5177

5178 5179 5180 5181 5182
		if (els_command == ELS_CMD_FARP ||
		    els_command == ELS_CMD_FARPR ||
		    els_command == ELS_CMD_FDISC)
			continue;

已提交
5183
		if (piocb->drvrTimeout > 0) {
5184
			if (piocb->drvrTimeout >= timeout)
已提交
5185
				piocb->drvrTimeout -= timeout;
5186
			else
已提交
5187 5188 5189 5190
				piocb->drvrTimeout = 0;
			continue;
		}

J
James Smart 已提交
5191 5192
		remote_ID = 0xffffffff;
		if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
已提交
5193
			remote_ID = cmd->un.elsreq64.remoteID;
J
James Smart 已提交
5194 5195 5196
		else {
			struct lpfc_nodelist *ndlp;
			ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
5197
			if (ndlp && NLP_CHK_NODE_ACT(ndlp))
J
James Smart 已提交
5198
				remote_ID = ndlp->nlp_DID;
已提交
5199
		}
5200 5201 5202 5203
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0127 ELS timeout Data: x%x x%x x%x "
				 "x%x\n", els_command,
				 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
5204
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
5205
	}
J
James Smart 已提交
5206
	spin_unlock_irq(&phba->hbalock);
5207

J
James Smart 已提交
5208 5209
	if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
		mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
已提交
5210 5211
}

5212
/**
5213
 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine is used to clean up all the outstanding ELS commands on a
 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
 * routine. After that, it walks the ELS transmit queue to remove all the
 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
 * the IOCBs with a non-NULL completion callback function, the callback
 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
 * callback function, the IOCB will simply be released. Finally, it walks
 * the ELS transmit completion queue to issue an abort IOCB to any transmit
 * completion queue IOCB that is associated with the @vport and is not
 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
 * part of the discovery state machine) out to HBA by invoking the
 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
 * the IOCBs are aborted when this function returns.
 **/
已提交
5232
void
J
James Smart 已提交
5233
lpfc_els_flush_cmd(struct lpfc_vport *vport)
已提交
5234
{
5235
	LIST_HEAD(completions);
J
James Smart 已提交
5236
	struct lpfc_hba  *phba = vport->phba;
5237
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
已提交
5238 5239
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;
5240 5241

	lpfc_fabric_abort_vport(vport);
已提交
5242

J
James Smart 已提交
5243
	spin_lock_irq(&phba->hbalock);
已提交
5244 5245 5246 5247 5248 5249 5250 5251
	list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
		cmd = &piocb->iocb;

		if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
			continue;
		}

		/* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
5252 5253 5254 5255
		if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
		    cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
		    cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
		    cmd->ulpCommand == CMD_ABORT_XRI_CN)
已提交
5256 5257
			continue;

J
James Smart 已提交
5258 5259 5260
		if (piocb->vport != vport)
			continue;

5261
		list_move_tail(&piocb->list, &completions);
5262
		pring->txq_cnt--;
已提交
5263 5264 5265 5266 5267 5268 5269
	}

	list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
		if (piocb->iocb_flag & LPFC_IO_LIBDFC) {
			continue;
		}

J
James Smart 已提交
5270 5271 5272
		if (piocb->vport != vport)
			continue;

5273
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
5274
	}
J
James Smart 已提交
5275
	spin_unlock_irq(&phba->hbalock);
5276

5277 5278 5279
	/* Cancell all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
5280

已提交
5281 5282 5283
	return;
}

5284
/**
5285
 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine is used to clean up all the outstanding ELS commands on a
 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
 * routine. After that, it walks the ELS transmit queue to remove all the
 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
 * the IOCBs with the completion callback function associated, the callback
 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
 * callback function associated, the IOCB will simply be released. Finally,
 * it walks the ELS transmit completion queue to issue an abort IOCB to any
 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
 * management plane IOCBs that are not part of the discovery state machine)
 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
 **/
5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329
void
lpfc_els_flush_all_cmd(struct lpfc_hba  *phba)
{
	LIST_HEAD(completions);
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;

	lpfc_fabric_abort_hba(phba);
	spin_lock_irq(&phba->hbalock);
	list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
		cmd = &piocb->iocb;
		if (piocb->iocb_flag & LPFC_IO_LIBDFC)
			continue;
		/* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
		if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
		    cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
		    cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
		    cmd->ulpCommand == CMD_ABORT_XRI_CN)
			continue;
		list_move_tail(&piocb->list, &completions);
		pring->txq_cnt--;
	}
	list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
		if (piocb->iocb_flag & LPFC_IO_LIBDFC)
			continue;
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
	}
	spin_unlock_irq(&phba->hbalock);
5330 5331 5332 5333 5334

	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);

5335 5336 5337
	return;
}

5338
/**
5339
 * lpfc_send_els_failure_event - Posts an ELS command failure event
5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380
 * @phba: Pointer to hba context object.
 * @cmdiocbp: Pointer to command iocb which reported error.
 * @rspiocbp: Pointer to response iocb which reported error.
 *
 * This function sends an event when there is an ELS command
 * failure.
 **/
void
lpfc_send_els_failure_event(struct lpfc_hba *phba,
			struct lpfc_iocbq *cmdiocbp,
			struct lpfc_iocbq *rspiocbp)
{
	struct lpfc_vport *vport = cmdiocbp->vport;
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_lsrjt_event lsrjt_event;
	struct lpfc_fabric_event_header fabric_event;
	struct ls_rjt stat;
	struct lpfc_nodelist *ndlp;
	uint32_t *pcmd;

	ndlp = cmdiocbp->context1;
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
		return;

	if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
		lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
		lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
		memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
			sizeof(struct lpfc_name));
		memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
			sizeof(struct lpfc_name));
		pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
			cmdiocbp->context2)->virt);
		lsrjt_event.command = *pcmd;
		stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
		lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
		lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
		fc_host_post_vendor_event(shost,
			fc_get_event_number(),
			sizeof(lsrjt_event),
			(char *)&lsrjt_event,
5381
			LPFC_NL_VENDOR_ID);
5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398
		return;
	}
	if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
		(rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
		fabric_event.event_type = FC_REG_FABRIC_EVENT;
		if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
			fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
		else
			fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
		memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
			sizeof(struct lpfc_name));
		memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
			sizeof(struct lpfc_name));
		fc_host_post_vendor_event(shost,
			fc_get_event_number(),
			sizeof(fabric_event),
			(char *)&fabric_event,
5399
			LPFC_NL_VENDOR_ID);
5400 5401 5402 5403 5404 5405
		return;
	}

}

/**
5406
 * lpfc_send_els_event - Posts unsolicited els event
5407 5408 5409 5410 5411 5412 5413 5414 5415 5416
 * @vport: Pointer to vport object.
 * @ndlp: Pointer FC node object.
 * @cmd: ELS command code.
 *
 * This function posts an event when there is an incoming
 * unsolicited ELS command.
 **/
static void
lpfc_send_els_event(struct lpfc_vport *vport,
		    struct lpfc_nodelist *ndlp,
5417
		    uint32_t *payload)
5418
{
5419 5420
	struct lpfc_els_event_header *els_data = NULL;
	struct lpfc_logo_event *logo_data = NULL;
5421 5422
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443
	if (*payload == ELS_CMD_LOGO) {
		logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
		if (!logo_data) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				"0148 Failed to allocate memory "
				"for LOGO event\n");
			return;
		}
		els_data = &logo_data->header;
	} else {
		els_data = kmalloc(sizeof(struct lpfc_els_event_header),
			GFP_KERNEL);
		if (!els_data) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				"0149 Failed to allocate memory "
				"for ELS event\n");
			return;
		}
	}
	els_data->event_type = FC_REG_ELS_EVENT;
	switch (*payload) {
5444
	case ELS_CMD_PLOGI:
5445
		els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
5446 5447
		break;
	case ELS_CMD_PRLO:
5448
		els_data->subcategory = LPFC_EVENT_PRLO_RCV;
5449 5450
		break;
	case ELS_CMD_ADISC:
5451 5452 5453 5454 5455 5456 5457
		els_data->subcategory = LPFC_EVENT_ADISC_RCV;
		break;
	case ELS_CMD_LOGO:
		els_data->subcategory = LPFC_EVENT_LOGO_RCV;
		/* Copy the WWPN in the LOGO payload */
		memcpy(logo_data->logo_wwpn, &payload[2],
			sizeof(struct lpfc_name));
5458 5459
		break;
	default:
5460
		kfree(els_data);
5461 5462
		return;
	}
5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479
	memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
	memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
	if (*payload == ELS_CMD_LOGO) {
		fc_host_post_vendor_event(shost,
			fc_get_event_number(),
			sizeof(struct lpfc_logo_event),
			(char *)logo_data,
			LPFC_NL_VENDOR_ID);
		kfree(logo_data);
	} else {
		fc_host_post_vendor_event(shost,
			fc_get_event_number(),
			sizeof(struct lpfc_els_event_header),
			(char *)els_data,
			LPFC_NL_VENDOR_ID);
		kfree(els_data);
	}
5480 5481 5482 5483 5484

	return;
}


5485
/**
5486
 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498
 * @phba: pointer to lpfc hba data structure.
 * @pring: pointer to a SLI ring.
 * @vport: pointer to a host virtual N_Port data structure.
 * @elsiocb: pointer to lpfc els command iocb data structure.
 *
 * This routine is used for processing the IOCB associated with a unsolicited
 * event. It first determines whether there is an existing ndlp that matches
 * the DID from the unsolicited IOCB. If not, it will create a new one with
 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
 * IOCB is then used to invoke the proper routine and to set up proper state
 * of the discovery state machine.
 **/
5499 5500
static void
lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5501
		      struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
已提交
5502
{
5503
	struct Scsi_Host  *shost;
已提交
5504 5505
	struct lpfc_nodelist *ndlp;
	struct ls_rjt stat;
5506
	uint32_t *payload;
J
James Smart 已提交
5507
	uint32_t cmd, did, newnode, rjt_err = 0;
5508
	IOCB_t *icmd = &elsiocb->iocb;
已提交
5509

5510
	if (!vport || !(elsiocb->context2))
已提交
5511
		goto dropit;
J
James Smart 已提交
5512

已提交
5513
	newnode = 0;
5514 5515
	payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
	cmd = *payload;
5516
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
5517
		lpfc_post_buffer(phba, pring, 1);
已提交
5518

J
James Smart 已提交
5519 5520 5521 5522 5523
	did = icmd->un.rcvels.remoteID;
	if (icmd->ulpStatus) {
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV Unsol ELS:  status:x%x/x%x did:x%x",
			icmd->ulpStatus, icmd->un.ulpWord[4], did);
已提交
5524
		goto dropit;
J
James Smart 已提交
5525
	}
已提交
5526 5527

	/* Check to see if link went down during discovery */
5528
	if (lpfc_els_chk_latt(vport))
已提交
5529 5530
		goto dropit;

5531
	/* Ignore traffic received during vport shutdown. */
5532 5533 5534
	if (vport->load_flag & FC_UNLOADING)
		goto dropit;

J
James Smart 已提交
5535
	ndlp = lpfc_findnode_did(vport, did);
5536
	if (!ndlp) {
已提交
5537
		/* Cannot find existing Fabric ndlp, so allocate a new one */
5538
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5539
		if (!ndlp)
已提交
5540 5541
			goto dropit;

J
James Smart 已提交
5542
		lpfc_nlp_init(vport, ndlp, did);
5543
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
已提交
5544
		newnode = 1;
5545
		if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
已提交
5546
			ndlp->nlp_type |= NLP_FABRIC;
5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		ndlp = lpfc_enable_node(vport, ndlp,
					NLP_STE_UNUSED_NODE);
		if (!ndlp)
			goto dropit;
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
		newnode = 1;
		if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
			ndlp->nlp_type |= NLP_FABRIC;
	} else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
		/* This is similar to the new node path */
		ndlp = lpfc_nlp_get(ndlp);
		if (!ndlp)
			goto dropit;
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
		newnode = 1;
5563
	}
已提交
5564 5565

	phba->fc_stat.elsRcvFrame++;
5566

5567
	elsiocb->context1 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
5568
	elsiocb->vport = vport;
已提交
5569 5570 5571 5572 5573

	if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
		cmd &= ELS_CMD_MASK;
	}
	/* ELS command <elsCmd> received from NPORT <did> */
5574 5575 5576
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0112 ELS command x%x received from NPORT x%x "
			 "Data: x%x\n", cmd, did, vport->port_state);
已提交
5577 5578
	switch (cmd) {
	case ELS_CMD_PLOGI:
J
James Smart 已提交
5579 5580 5581 5582
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV PLOGI:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5583
		phba->fc_stat.elsRcvPLOGI++;
J
James Smart 已提交
5584 5585
		ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);

5586
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5587
		if (vport->port_state < LPFC_DISC_AUTH) {
5588 5589 5590 5591 5592 5593 5594 5595 5596
			if (!(phba->pport->fc_flag & FC_PT2PT) ||
				(phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
				rjt_err = LSRJT_UNABLE_TPC;
				break;
			}
			/* We get here, and drop thru, if we are PT2PT with
			 * another NPort and the other side has initiated
			 * the PLOGI before responding to our FLOGI.
			 */
已提交
5597
		}
5598 5599 5600 5601 5602 5603

		shost = lpfc_shost_from_vport(vport);
		spin_lock_irq(shost->host_lock);
		ndlp->nlp_flag &= ~NLP_TARGET_REMOVE;
		spin_unlock_irq(shost->host_lock);

J
James Smart 已提交
5604 5605
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PLOGI);
J
James Smart 已提交
5606

已提交
5607 5608
		break;
	case ELS_CMD_FLOGI:
J
James Smart 已提交
5609 5610 5611 5612
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV FLOGI:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5613
		phba->fc_stat.elsRcvFLOGI++;
5614
		lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
5615
		if (newnode)
5616
			lpfc_nlp_put(ndlp);
已提交
5617 5618
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
5619 5620 5621 5622
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV LOGO:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5623
		phba->fc_stat.elsRcvLOGO++;
5624
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5625
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5626
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5627 5628
			break;
		}
J
James Smart 已提交
5629
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
已提交
5630 5631
		break;
	case ELS_CMD_PRLO:
J
James Smart 已提交
5632 5633 5634 5635
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV PRLO:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5636
		phba->fc_stat.elsRcvPRLO++;
5637
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5638
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5639
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5640 5641
			break;
		}
J
James Smart 已提交
5642
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
已提交
5643 5644 5645
		break;
	case ELS_CMD_RSCN:
		phba->fc_stat.elsRcvRSCN++;
5646
		lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
5647
		if (newnode)
5648
			lpfc_nlp_put(ndlp);
已提交
5649 5650
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
5651 5652 5653 5654
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV ADISC:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

5655
		lpfc_send_els_event(vport, ndlp, payload);
已提交
5656
		phba->fc_stat.elsRcvADISC++;
J
James Smart 已提交
5657
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5658
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5659 5660
			break;
		}
J
James Smart 已提交
5661 5662
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_ADISC);
已提交
5663 5664
		break;
	case ELS_CMD_PDISC:
J
James Smart 已提交
5665 5666 5667 5668
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV PDISC:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5669
		phba->fc_stat.elsRcvPDISC++;
J
James Smart 已提交
5670
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5671
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5672 5673
			break;
		}
J
James Smart 已提交
5674 5675
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PDISC);
已提交
5676 5677
		break;
	case ELS_CMD_FARPR:
J
James Smart 已提交
5678 5679 5680 5681
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV FARPR:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5682
		phba->fc_stat.elsRcvFARPR++;
J
James Smart 已提交
5683
		lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
已提交
5684 5685
		break;
	case ELS_CMD_FARP:
J
James Smart 已提交
5686 5687 5688 5689
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV FARP:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5690
		phba->fc_stat.elsRcvFARP++;
J
James Smart 已提交
5691
		lpfc_els_rcv_farp(vport, elsiocb, ndlp);
已提交
5692 5693
		break;
	case ELS_CMD_FAN:
J
James Smart 已提交
5694 5695 5696 5697
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV FAN:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5698
		phba->fc_stat.elsRcvFAN++;
J
James Smart 已提交
5699
		lpfc_els_rcv_fan(vport, elsiocb, ndlp);
已提交
5700 5701
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
5702 5703 5704 5705
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV PRLI:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5706
		phba->fc_stat.elsRcvPRLI++;
J
James Smart 已提交
5707
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5708
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5709 5710
			break;
		}
J
James Smart 已提交
5711
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
已提交
5712
		break;
5713
	case ELS_CMD_LIRR:
J
James Smart 已提交
5714 5715 5716 5717
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV LIRR:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

5718
		phba->fc_stat.elsRcvLIRR++;
J
James Smart 已提交
5719
		lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
5720
		if (newnode)
5721
			lpfc_nlp_put(ndlp);
5722 5723
		break;
	case ELS_CMD_RPS:
J
James Smart 已提交
5724 5725 5726 5727
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RPS:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

5728
		phba->fc_stat.elsRcvRPS++;
J
James Smart 已提交
5729
		lpfc_els_rcv_rps(vport, elsiocb, ndlp);
5730
		if (newnode)
5731
			lpfc_nlp_put(ndlp);
5732 5733
		break;
	case ELS_CMD_RPL:
J
James Smart 已提交
5734 5735 5736 5737
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RPL:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

5738
		phba->fc_stat.elsRcvRPL++;
J
James Smart 已提交
5739
		lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
5740
		if (newnode)
5741
			lpfc_nlp_put(ndlp);
5742
		break;
已提交
5743
	case ELS_CMD_RNID:
J
James Smart 已提交
5744 5745 5746 5747
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RNID:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5748
		phba->fc_stat.elsRcvRNID++;
J
James Smart 已提交
5749
		lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
5750
		if (newnode)
5751
			lpfc_nlp_put(ndlp);
已提交
5752
		break;
5753 5754 5755 5756 5757 5758 5759 5760 5761 5762
	case ELS_CMD_RRQ:
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RRQ:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

		phba->fc_stat.elsRcvRRQ++;
		lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
		if (newnode)
			lpfc_nlp_put(ndlp);
		break;
已提交
5763
	default:
J
James Smart 已提交
5764 5765 5766 5767
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV ELS cmd:     cmd:x%x did:x%x/ste:x%x",
			cmd, did, vport->port_state);

已提交
5768
		/* Unsupported ELS command, reject */
J
James Smart 已提交
5769
		rjt_err = LSRJT_INVALID_CMD;
已提交
5770 5771

		/* Unknown ELS command <elsCmd> received from NPORT <did> */
5772 5773 5774
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0115 Unknown ELS command x%x "
				 "received from NPORT x%x\n", cmd, did);
5775
		if (newnode)
5776
			lpfc_nlp_put(ndlp);
已提交
5777 5778 5779 5780 5781
		break;
	}

	/* check if need to LS_RJT received ELS cmd */
	if (rjt_err) {
5782
		memset(&stat, 0, sizeof(stat));
J
James Smart 已提交
5783
		stat.un.b.lsRjtRsnCode = rjt_err;
5784
		stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
J
James Smart 已提交
5785 5786
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
			NULL);
已提交
5787 5788
	}

5789 5790
	lpfc_nlp_put(elsiocb->context1);
	elsiocb->context1 = NULL;
5791 5792 5793
	return;

dropit:
5794
	if (vport && !(vport->load_flag & FC_UNLOADING))
5795 5796
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
			"0111 Dropping received ELS cmd "
5797
			"Data: x%x x%x x%x\n",
5798
			icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
5799 5800 5801
	phba->fc_stat.elsRcvDrop++;
}

5802
/**
5803
 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814
 * @phba: pointer to lpfc hba data structure.
 * @vpi: host virtual N_Port identifier.
 *
 * This routine finds a vport on a HBA (referred by @phba) through a
 * @vpi. The function walks the HBA's vport list and returns the address
 * of the vport with the matching @vpi.
 *
 * Return code
 *    NULL - No vport with the matching @vpi found
 *    Otherwise - Address to the vport with the matching @vpi.
 **/
5815
struct lpfc_vport *
5816 5817 5818
lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
{
	struct lpfc_vport *vport;
5819
	unsigned long flags;
5820

5821
	spin_lock_irqsave(&phba->hbalock, flags);
5822
	list_for_each_entry(vport, &phba->port_list, listentry) {
5823 5824
		if (vport->vpi == vpi) {
			spin_unlock_irqrestore(&phba->hbalock, flags);
5825
			return vport;
5826
		}
5827
	}
5828
	spin_unlock_irqrestore(&phba->hbalock, flags);
5829 5830
	return NULL;
}
5831

5832
/**
5833
 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
5834 5835 5836 5837 5838 5839 5840 5841 5842 5843
 * @phba: pointer to lpfc hba data structure.
 * @pring: pointer to a SLI ring.
 * @elsiocb: pointer to lpfc els iocb data structure.
 *
 * This routine is used to process an unsolicited event received from a SLI
 * (Service Level Interface) ring. The actual processing of the data buffer
 * associated with the unsolicited event is done by invoking the routine
 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
 * SLI ring on which the unsolicited event was received.
 **/
5844 5845 5846 5847 5848 5849 5850
void
lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
		     struct lpfc_iocbq *elsiocb)
{
	struct lpfc_vport *vport = phba->pport;
	IOCB_t *icmd = &elsiocb->iocb;
	dma_addr_t paddr;
5851 5852 5853
	struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
	struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;

5854
	elsiocb->context1 = NULL;
5855 5856
	elsiocb->context2 = NULL;
	elsiocb->context3 = NULL;
5857

5858 5859 5860 5861
	if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
		lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
	} else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
	    (icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING) {
5862 5863
		phba->fc_stat.NoRcvBuf++;
		/* Not enough posted buffers; Try posting more buffers */
5864
		if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
5865
			lpfc_post_buffer(phba, pring, 0);
5866 5867 5868
		return;
	}

5869 5870 5871 5872 5873
	if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
	    (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
	     icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
		if (icmd->unsli3.rcvsli3.vpi == 0xffff)
			vport = phba->pport;
5874 5875 5876
		else
			vport = lpfc_find_vport_by_vpid(phba,
				icmd->unsli3.rcvsli3.vpi - phba->vpi_base);
5877
	}
5878 5879 5880
	/* If there are no BDEs associated
	 * with this IOCB, there is nothing to do.
	 */
5881 5882 5883
	if (icmd->ulpBdeCount == 0)
		return;

5884 5885 5886
	/* type of ELS cmd is first 32bit word
	 * in packet
	 */
5887
	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
5888
		elsiocb->context2 = bdeBuf1;
5889 5890 5891
	} else {
		paddr = getPaddr(icmd->un.cont64[0].addrHigh,
				 icmd->un.cont64[0].addrLow);
5892 5893
		elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
							     paddr);
5894 5895
	}

5896 5897 5898 5899 5900
	lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
	/*
	 * The different unsolicited event handlers would tell us
	 * if they are done with "mp" by setting context2 to NULL.
	 */
已提交
5901
	if (elsiocb->context2) {
5902 5903
		lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
		elsiocb->context2 = NULL;
已提交
5904
	}
5905 5906

	/* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
5907
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
5908
	    icmd->ulpBdeCount == 2) {
5909 5910
		elsiocb->context2 = bdeBuf2;
		lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5911 5912
		/* free mp if we are done with it */
		if (elsiocb->context2) {
5913 5914 5915 5916 5917 5918
			lpfc_in_buf_free(phba, elsiocb->context2);
			elsiocb->context2 = NULL;
		}
	}
}

5919
/**
5920
 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931
 * @phba: pointer to lpfc hba data structure.
 * @vport: pointer to a virtual N_Port data structure.
 *
 * This routine issues a Port Login (PLOGI) to the Name Server with
 * State Change Request (SCR) for a @vport. This routine will create an
 * ndlp for the Name Server associated to the @vport if such node does
 * not already exist. The PLOGI to Name Server is issued by invoking the
 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
 * (FDMI) is configured to the @vport, a FDMI node will be created and
 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
 **/
5932 5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945
void
lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
	struct lpfc_nodelist *ndlp, *ndlp_fdmi;

	ndlp = lpfc_findnode_did(vport, NameServer_DID);
	if (!ndlp) {
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp) {
			if (phba->fc_topology == TOPOLOGY_LOOP) {
				lpfc_disc_start(vport);
				return;
			}
			lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5946 5947
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					 "0251 NameServer login: no memory\n");
5948 5949 5950
			return;
		}
		lpfc_nlp_init(vport, ndlp, NameServer_DID);
5951 5952 5953 5954 5955 5956 5957 5958 5959 5960 5961 5962
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp) {
			if (phba->fc_topology == TOPOLOGY_LOOP) {
				lpfc_disc_start(vport);
				return;
			}
			lpfc_vport_set_state(vport, FC_VPORT_FAILED);
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					"0348 NameServer login: node freed\n");
			return;
		}
5963
	}
5964
	ndlp->nlp_type |= NLP_FABRIC;
5965 5966 5967 5968 5969

	lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);

	if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5970 5971
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0252 Cannot issue NameServer login\n");
5972 5973 5974
		return;
	}

5975
	if (vport->cfg_fdmi_on) {
5976 5977 5978 5979 5980
		ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
					  GFP_KERNEL);
		if (ndlp_fdmi) {
			lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
			ndlp_fdmi->nlp_type |= NLP_FABRIC;
5981 5982
			lpfc_nlp_set_state(vport, ndlp_fdmi,
				NLP_STE_PLOGI_ISSUE);
5983 5984 5985 5986 5987 5988 5989
			lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
					     0);
		}
	}
	return;
}

5990
/**
5991
 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
5992 5993 5994 5995 5996 5997 5998 5999 6000 6001
 * @phba: pointer to lpfc hba data structure.
 * @pmb: pointer to the driver internal queue element for mailbox command.
 *
 * This routine is the completion callback function to register new vport
 * mailbox command. If the new vport mailbox command completes successfully,
 * the fabric registration login shall be performed on physical port (the
 * new vport created is actually a physical port, with VPI 0) or the port
 * login to Name Server for State Change Request (SCR) will be performed
 * on virtual port (real virtual port, with VPI greater than 0).
 **/
6002 6003 6004 6005 6006 6007
static void
lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
	struct lpfc_vport *vport = pmb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
6008
	MAILBOX_t *mb = &pmb->u.mb;
6009
	int rc;
6010

6011
	spin_lock_irq(shost->host_lock);
6012
	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
6013
	spin_unlock_irq(shost->host_lock);
6014 6015

	if (mb->mbxStatus) {
6016 6017 6018
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				 "0915 Register VPI failed: 0x%x\n",
				 mb->mbxStatus);
6019 6020 6021 6022

		switch (mb->mbxStatus) {
		case 0x11:	/* unsupported feature */
		case 0x9603:	/* max_vpi exceeded */
6023
		case 0x9602:	/* Link event since CLEAR_LA */
6024 6025 6026 6027 6028 6029 6030
			/* giving up on vport registration */
			lpfc_vport_set_state(vport, FC_VPORT_FAILED);
			spin_lock_irq(shost->host_lock);
			vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
			spin_unlock_irq(shost->host_lock);
			lpfc_can_disctmo(vport);
			break;
6031 6032 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 6045 6046 6047 6048 6049 6050
		/* If reg_vpi fail with invalid VPI status, re-init VPI */
		case 0x20:
			spin_lock_irq(shost->host_lock);
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
			spin_unlock_irq(shost->host_lock);
			lpfc_init_vpi(phba, pmb, vport->vpi);
			pmb->vport = vport;
			pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
			rc = lpfc_sli_issue_mbox(phba, pmb,
				MBX_NOWAIT);
			if (rc == MBX_NOT_FINISHED) {
				lpfc_printf_vlog(vport,
					KERN_ERR, LOG_MBOX,
					"2732 Failed to issue INIT_VPI"
					" mailbox command\n");
			} else {
				lpfc_nlp_put(ndlp);
				return;
			}

6051 6052 6053
		default:
			/* Try to recover from this error */
			lpfc_mbx_unreg_vpi(vport);
6054
			spin_lock_irq(shost->host_lock);
6055
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6056
			spin_unlock_irq(shost->host_lock);
J
James Smart 已提交
6057 6058
			if (vport->port_type == LPFC_PHYSICAL_PORT
				&& !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
6059 6060 6061
				lpfc_initial_flogi(vport);
			else
				lpfc_initial_fdisc(vport);
6062 6063 6064
			break;
		}
	} else {
6065
		spin_lock_irq(shost->host_lock);
6066
		vport->vpi_state |= LPFC_VPI_REGISTERED;
6067 6068
		spin_unlock_irq(shost->host_lock);
		if (vport == phba->pport) {
6069 6070
			if (phba->sli_rev < LPFC_SLI_REV4)
				lpfc_issue_fabric_reglogin(vport);
6071
			else {
6072 6073 6074 6075 6076 6077
				/*
				 * If the physical port is instantiated using
				 * FDISC, do not start vport discovery.
				 */
				if (vport->port_state != LPFC_FDISC)
					lpfc_start_fdiscs(phba);
6078 6079 6080
				lpfc_do_scr_ns_plogi(phba, vport);
			}
		} else
6081 6082
			lpfc_do_scr_ns_plogi(phba, vport);
	}
6083 6084 6085 6086 6087 6088

	/* Now, we decrement the ndlp reference count held for this
	 * callback function
	 */
	lpfc_nlp_put(ndlp);

6089 6090 6091 6092
	mempool_free(pmb, phba->mbox_mem_pool);
	return;
}

6093
/**
6094
 * lpfc_register_new_vport - Register a new vport with a HBA
6095 6096 6097 6098 6099 6100 6101
 * @phba: pointer to lpfc hba data structure.
 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine registers the @vport as a new virtual port with a HBA.
 * It is done through a registering vpi mailbox command.
 **/
6102
void
6103 6104 6105
lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
			struct lpfc_nodelist *ndlp)
{
6106
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6107 6108 6109 6110
	LPFC_MBOXQ_t *mbox;

	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (mbox) {
6111
		lpfc_reg_vpi(vport, mbox);
6112 6113 6114
		mbox->vport = vport;
		mbox->context2 = lpfc_nlp_get(ndlp);
		mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
6115
		if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
6116
		    == MBX_NOT_FINISHED) {
6117 6118 6119 6120
			/* mailbox command not success, decrement ndlp
			 * reference count for this command
			 */
			lpfc_nlp_put(ndlp);
6121 6122
			mempool_free(mbox, phba->mbox_mem_pool);

6123 6124
			lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				"0253 Register VPI: Can't send mbox\n");
6125
			goto mbox_err_exit;
6126 6127
		}
	} else {
6128 6129
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				 "0254 Register VPI: no memory\n");
6130
		goto mbox_err_exit;
6131
	}
6132 6133 6134 6135 6136 6137 6138 6139
	return;

mbox_err_exit:
	lpfc_vport_set_state(vport, FC_VPORT_FAILED);
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
	spin_unlock_irq(shost->host_lock);
	return;
6140 6141
}

6142
/**
6143
 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
6144 6145
 * @phba: pointer to lpfc hba data structure.
 *
6146
 * This routine cancels the retry delay timers to all the vports.
6147 6148
 **/
void
6149
lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
6150 6151 6152 6153
{
	struct lpfc_vport **vports;
	struct lpfc_nodelist *ndlp;
	uint32_t link_state;
6154
	int i;
6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171

	/* Treat this failure as linkdown for all vports */
	link_state = phba->link_state;
	lpfc_linkdown(phba);
	phba->link_state = link_state;

	vports = lpfc_create_vport_work_array(phba);

	if (vports) {
		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
			ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
			if (ndlp)
				lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
			lpfc_els_flush_cmd(vports[i]);
		}
		lpfc_destroy_vport_work_array(phba, vports);
	}
6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188 6189
}

/**
 * lpfc_retry_pport_discovery - Start timer to retry FLOGI.
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine abort all pending discovery commands and
 * start a timer to retry FLOGI for the physical port
 * discovery.
 **/
void
lpfc_retry_pport_discovery(struct lpfc_hba *phba)
{
	struct lpfc_nodelist *ndlp;
	struct Scsi_Host  *shost;

	/* Cancel the all vports retry delay retry timers */
	lpfc_cancel_all_vport_retry_delay_timer(phba);
6190 6191 6192 6193 6194 6195 6196 6197 6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227

	/* If fabric require FLOGI, then re-instantiate physical login */
	ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
	if (!ndlp)
		return;

	shost = lpfc_shost_from_vport(phba->pport);
	mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
	spin_lock_irq(shost->host_lock);
	ndlp->nlp_flag |= NLP_DELAY_TMO;
	spin_unlock_irq(shost->host_lock);
	ndlp->nlp_last_elscmd = ELS_CMD_FLOGI;
	phba->pport->port_state = LPFC_FLOGI;
	return;
}

/**
 * lpfc_fabric_login_reqd - Check if FLOGI required.
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to FDISC command iocb.
 * @rspiocb: pointer to FDISC response iocb.
 *
 * This routine checks if a FLOGI is reguired for FDISC
 * to succeed.
 **/
static int
lpfc_fabric_login_reqd(struct lpfc_hba *phba,
		struct lpfc_iocbq *cmdiocb,
		struct lpfc_iocbq *rspiocb)
{

	if ((rspiocb->iocb.ulpStatus != IOSTAT_FABRIC_RJT) ||
		(rspiocb->iocb.un.ulpWord[4] != RJT_LOGIN_REQUIRED))
		return 0;
	else
		return 1;
}

6228
/**
6229
 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
6230 6231 6232 6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function to a Fabric Discover
 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
 * single threaded, each FDISC completion callback function will reset
 * the discovery timer for all vports such that the timers will not get
 * unnecessary timeout. The function checks the FDISC IOCB status. If error
 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
 * assigned to the vport has been changed with the completion of the FDISC
 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
 * are unregistered from the HBA, and then the lpfc_register_new_vport()
 * routine is invoked to register new vport with the HBA. Otherwise, the
 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
 * Server for State Change Request (SCR).
 **/
6248 6249 6250 6251 6252 6253 6254 6255 6256 6257 6258 6259
static void
lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
{
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_nodelist *np;
	struct lpfc_nodelist *next_np;
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_iocbq *piocb;

6260 6261 6262 6263
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
			 irsp->ulpStatus, irsp->un.ulpWord[4],
			 vport->fc_prevDID);
6264 6265 6266 6267 6268 6269 6270 6271
	/* Since all FDISCs are being single threaded, we
	 * must reset the discovery timer for ALL vports
	 * waiting to send FDISC when one completes.
	 */
	list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
		lpfc_set_disctmo(piocb->vport);
	}

J
James Smart 已提交
6272 6273 6274 6275
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"FDISC cmpl:      status:x%x/x%x prevdid:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);

6276
	if (irsp->ulpStatus) {
6277 6278 6279 6280 6281 6282

		if (lpfc_fabric_login_reqd(phba, cmdiocb, rspiocb)) {
			lpfc_retry_pport_discovery(phba);
			goto out;
		}

6283 6284 6285 6286
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
			goto out;
		/* FDISC failed */
6287
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6288
				 "0126 FDISC failed. (%d/%d)\n",
6289
				 irsp->ulpStatus, irsp->un.ulpWord[4]);
6290 6291 6292
		goto fdisc_failed;
	}
	spin_lock_irq(shost->host_lock);
6293
	vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
J
James Smart 已提交
6294
	vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
6295 6296 6297 6298
	vport->fc_flag |= FC_FABRIC;
	if (vport->phba->fc_topology == TOPOLOGY_LOOP)
		vport->fc_flag |=  FC_PUBLIC_LOOP;
	spin_unlock_irq(shost->host_lock);
6299

6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313
	vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
	lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
	if ((vport->fc_prevDID != vport->fc_myDID) &&
		!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
		/* If our NportID changed, we need to ensure all
		 * remaining NPORTs get unreg_login'ed so we can
		 * issue unreg_vpi.
		 */
		list_for_each_entry_safe(np, next_np,
			&vport->fc_nodes, nlp_listp) {
			if (!NLP_CHK_NODE_ACT(ndlp) ||
			    (np->nlp_state != NLP_STE_NPR_NODE) ||
			    !(np->nlp_flag & NLP_NPR_ADISC))
				continue;
6314
			spin_lock_irq(shost->host_lock);
6315
			np->nlp_flag &= ~NLP_NPR_ADISC;
6316
			spin_unlock_irq(shost->host_lock);
6317
			lpfc_unreg_rpi(vport, np);
6318
		}
6319 6320 6321
		lpfc_mbx_unreg_vpi(vport);
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6322 6323
		if (phba->sli_rev == LPFC_SLI_REV4)
			vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
J
James Smart 已提交
6324 6325
		else
			vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
6326
		spin_unlock_irq(shost->host_lock);
6327 6328
	}

6329 6330 6331
	if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
		lpfc_issue_init_vpi(vport);
	else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
6332 6333 6334 6335 6336 6337 6338 6339 6340
		lpfc_register_new_vport(phba, vport, ndlp);
	else
		lpfc_do_scr_ns_plogi(phba, vport);
	goto out;
fdisc_failed:
	lpfc_vport_set_state(vport, FC_VPORT_FAILED);
	/* Cancel discovery timer */
	lpfc_can_disctmo(vport);
	lpfc_nlp_put(ndlp);
6341 6342 6343 6344
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

6345
/**
6346
 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
6347 6348 6349 6350 6351 6352 6353 6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 6364
 * @vport: pointer to a virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
 * routine to issue the IOCB, which makes sure only one outstanding fabric
 * IOCB will be sent off HBA at any given time.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the FDISC ELS command.
 *
 * Return code
 *   0 - Successfully issued fdisc iocb command
 *   1 - Failed to issue fdisc iocb command
 **/
A
Adrian Bunk 已提交
6365
static int
6366 6367 6368 6369 6370 6371 6372 6373 6374 6375 6376 6377
lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
		     uint8_t retry)
{
	struct lpfc_hba *phba = vport->phba;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct serv_parm *sp;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int did = ndlp->nlp_DID;
	int rc;

6378
	vport->port_state = LPFC_FDISC;
6379 6380 6381 6382 6383
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
				     ELS_CMD_FDISC);
	if (!elsiocb) {
		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6384 6385
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0255 Issue FDISC: no IOCB\n");
6386 6387 6388 6389 6390 6391 6392
		return 1;
	}

	icmd = &elsiocb->iocb;
	icmd->un.elsreq64.myID = 0;
	icmd->un.elsreq64.fl = 1;

6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403
	if  (phba->sli_rev == LPFC_SLI_REV4) {
		/* FDISC needs to be 1 for WQE VPI */
		elsiocb->iocb.ulpCt_h = (SLI4_CT_VPI >> 1) & 1;
		elsiocb->iocb.ulpCt_l = SLI4_CT_VPI & 1 ;
		/* Set the ulpContext to the vpi */
		elsiocb->iocb.ulpContext = vport->vpi + phba->vpi_base;
	} else {
		/* For FDISC, Let FDISC rsp set the NPortID for this VPI */
		icmd->ulpCt_h = 1;
		icmd->ulpCt_l = 0;
	}
6404 6405 6406 6407 6408 6409 6410 6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430

	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_FDISC;
	pcmd += sizeof(uint32_t); /* CSP Word 1 */
	memcpy(pcmd, &vport->phba->pport->fc_sparam, sizeof(struct serv_parm));
	sp = (struct serv_parm *) pcmd;
	/* Setup CSPs accordingly for Fabric */
	sp->cmn.e_d_tov = 0;
	sp->cmn.w2.r_a_tov = 0;
	sp->cls1.classValid = 0;
	sp->cls2.seqDelivery = 1;
	sp->cls3.seqDelivery = 1;

	pcmd += sizeof(uint32_t); /* CSP Word 2 */
	pcmd += sizeof(uint32_t); /* CSP Word 3 */
	pcmd += sizeof(uint32_t); /* CSP Word 4 */
	pcmd += sizeof(uint32_t); /* Port Name */
	memcpy(pcmd, &vport->fc_portname, 8);
	pcmd += sizeof(uint32_t); /* Node Name */
	pcmd += sizeof(uint32_t); /* Node Name */
	memcpy(pcmd, &vport->fc_nodename, 8);

	lpfc_set_disctmo(vport);

	phba->fc_stat.elsXmitFDISC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_fdisc;

J
James Smart 已提交
6431 6432 6433 6434
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FDISC:     did:x%x",
		did, 0, 0);

6435 6436 6437 6438
	rc = lpfc_issue_fabric_iocb(phba, elsiocb);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6439 6440
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0256 Issue FDISC: Cannot send IOCB\n");
6441 6442 6443 6444 6445 6446
		return 1;
	}
	lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
	return 0;
}

6447
/**
6448
 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
6449 6450 6451 6452 6453 6454 6455 6456 6457 6458 6459 6460
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function to the issuing of a LOGO
 * ELS command off a vport. It frees the command IOCB and then decrement the
 * reference count held on ndlp for this completion function, indicating that
 * the reference to the ndlp is no long needed. Note that the
 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
 * callback function and an additional explicit ndlp reference decrementation
 * will trigger the actual release of the ndlp.
 **/
6461 6462 6463 6464 6465
static void
lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
			struct lpfc_iocbq *rspiocb)
{
	struct lpfc_vport *vport = cmdiocb->vport;
J
James Smart 已提交
6466
	IOCB_t *irsp;
6467 6468
	struct lpfc_nodelist *ndlp;
	ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
J
James Smart 已提交
6469 6470 6471 6472 6473

	irsp = &rspiocb->iocb;
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"LOGO npiv cmpl:  status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
6474 6475 6476

	lpfc_els_free_iocb(phba, cmdiocb);
	vport->unreg_vpi_cmpl = VPORT_ERROR;
6477 6478 6479

	/* Trigger the release of the ndlp after logo */
	lpfc_nlp_put(ndlp);
6480 6481
}

6482
/**
6483
 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
6484 6485 6486 6487 6488 6489 6490 6491 6492 6493 6494 6495 6496 6497
 * @vport: pointer to a virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the LOGO ELS command.
 *
 * Return codes
 *   0 - Successfully issued logo off the @vport
 *   1 - Failed to issue logo off the @vport
 **/
6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523
int
lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

	cmdsize = 2 * sizeof(uint32_t) + sizeof(struct lpfc_name);
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp, ndlp->nlp_DID,
				     ELS_CMD_LOGO);
	if (!elsiocb)
		return 1;

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
	pcmd += sizeof(uint32_t);

	/* Fill in LOGO payload */
	*((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));

J
James Smart 已提交
6524 6525 6526 6527
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue LOGO npiv  did:x%x flg:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, 0);

6528 6529 6530 6531
	elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
	spin_lock_irq(shost->host_lock);
	ndlp->nlp_flag |= NLP_LOGO_SND;
	spin_unlock_irq(shost->host_lock);
6532 6533
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
6534 6535 6536 6537 6538 6539 6540 6541 6542
		spin_lock_irq(shost->host_lock);
		ndlp->nlp_flag &= ~NLP_LOGO_SND;
		spin_unlock_irq(shost->host_lock);
		lpfc_els_free_iocb(phba, elsiocb);
		return 1;
	}
	return 0;
}

6543
/**
6544
 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
6545 6546 6547 6548 6549 6550 6551 6552 6553
 * @ptr: holder for the timer function associated data.
 *
 * This routine is invoked by the fabric iocb block timer after
 * timeout. It posts the fabric iocb block timeout event by setting the
 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
 * posted event WORKER_FABRIC_BLOCK_TMO.
 **/
6554 6555 6556 6557 6558 6559
void
lpfc_fabric_block_timeout(unsigned long ptr)
{
	struct lpfc_hba  *phba = (struct lpfc_hba *) ptr;
	unsigned long iflags;
	uint32_t tmo_posted;
6560

6561 6562 6563 6564 6565 6566
	spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
	tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
	if (!tmo_posted)
		phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);

6567 6568 6569
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
	return;
6570 6571
}

6572
/**
6573
 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
6574 6575 6576 6577 6578 6579 6580 6581
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine issues one fabric iocb from the driver internal list to
 * the HBA. It first checks whether it's ready to issue one fabric iocb to
 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
 * remove one pending fabric iocb from the driver internal list and invokes
 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
 **/
6582 6583 6584 6585 6586 6587 6588 6589 6590 6591 6592
static void
lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
{
	struct lpfc_iocbq *iocb;
	unsigned long iflags;
	int ret;
	IOCB_t *cmd;

repeat:
	iocb = NULL;
	spin_lock_irqsave(&phba->hbalock, iflags);
6593
	/* Post any pending iocb to the SLI layer */
6594 6595 6596 6597
	if (atomic_read(&phba->fabric_iocb_count) == 0) {
		list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
				 list);
		if (iocb)
6598
			/* Increment fabric iocb count to hold the position */
6599 6600 6601 6602 6603 6604 6605 6606
			atomic_inc(&phba->fabric_iocb_count);
	}
	spin_unlock_irqrestore(&phba->hbalock, iflags);
	if (iocb) {
		iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
		iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
		iocb->iocb_flag |= LPFC_IO_FABRIC;

J
James Smart 已提交
6607 6608 6609 6610
		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched1:   ste:x%x",
			iocb->vport->port_state, 0, 0);

6611
		ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6612 6613 6614 6615 6616 6617 6618 6619 6620 6621 6622 6623 6624 6625 6626 6627 6628 6629

		if (ret == IOCB_ERROR) {
			iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
			iocb->fabric_iocb_cmpl = NULL;
			iocb->iocb_flag &= ~LPFC_IO_FABRIC;
			cmd = &iocb->iocb;
			cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
			cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
			iocb->iocb_cmpl(phba, iocb, iocb);

			atomic_dec(&phba->fabric_iocb_count);
			goto repeat;
		}
	}

	return;
}

6630
/**
6631
 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
6632 6633 6634 6635 6636 6637 6638
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine unblocks the  issuing fabric iocb command. The function
 * will clear the fabric iocb block bit and then invoke the routine
 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
 * from the driver internal fabric iocb list.
 **/
6639 6640 6641 6642 6643 6644 6645 6646 6647
void
lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
{
	clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);

	lpfc_resume_fabric_iocbs(phba);
	return;
}

6648
/**
6649
 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
6650 6651 6652 6653 6654 6655 6656
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine blocks the issuing fabric iocb for a specified amount of
 * time (currently 100 ms). This is done by set the fabric iocb block bit
 * and set up a timeout timer for 100ms. When the block bit is set, no more
 * fabric iocb will be issued out of the HBA.
 **/
6657 6658 6659 6660 6661 6662
static void
lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
{
	int blocked;

	blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6663
	/* Start a timer to unblock fabric iocbs after 100ms */
6664 6665 6666 6667 6668 6669
	if (!blocked)
		mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );

	return;
}

6670
/**
6671
 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
6672 6673 6674 6675 6676 6677 6678 6679 6680 6681 6682
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the callback function that is put to the fabric iocb's
 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback
 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
 * function first restores and invokes the original iocb's callback function
 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
 **/
6683 6684 6685 6686 6687 6688 6689 6690 6691 6692 6693 6694 6695 6696
static void
lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
	struct lpfc_iocbq *rspiocb)
{
	struct ls_rjt stat;

	if ((cmdiocb->iocb_flag & LPFC_IO_FABRIC) != LPFC_IO_FABRIC)
		BUG();

	switch (rspiocb->iocb.ulpStatus) {
		case IOSTAT_NPORT_RJT:
		case IOSTAT_FABRIC_RJT:
			if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
				lpfc_block_fabric_iocbs(phba);
6697
			}
6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717 6718 6719 6720 6721 6722 6723
			break;

		case IOSTAT_NPORT_BSY:
		case IOSTAT_FABRIC_BSY:
			lpfc_block_fabric_iocbs(phba);
			break;

		case IOSTAT_LS_RJT:
			stat.un.lsRjtError =
				be32_to_cpu(rspiocb->iocb.un.ulpWord[4]);
			if ((stat.un.b.lsRjtRsnCode == LSRJT_UNABLE_TPC) ||
				(stat.un.b.lsRjtRsnCode == LSRJT_LOGICAL_BSY))
				lpfc_block_fabric_iocbs(phba);
			break;
	}

	if (atomic_read(&phba->fabric_iocb_count) == 0)
		BUG();

	cmdiocb->iocb_cmpl = cmdiocb->fabric_iocb_cmpl;
	cmdiocb->fabric_iocb_cmpl = NULL;
	cmdiocb->iocb_flag &= ~LPFC_IO_FABRIC;
	cmdiocb->iocb_cmpl(phba, cmdiocb, rspiocb);

	atomic_dec(&phba->fabric_iocb_count);
	if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
6724 6725
		/* Post any pending iocbs to HBA */
		lpfc_resume_fabric_iocbs(phba);
6726 6727 6728
	}
}

6729
/**
6730
 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742 6743 6744 6745 6746 6747 6748 6749 6750 6751 6752
 * @phba: pointer to lpfc hba data structure.
 * @iocb: pointer to lpfc command iocb data structure.
 *
 * This routine is used as the top-level API for issuing a fabric iocb command
 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
 * function makes sure that only one fabric bound iocb will be outstanding at
 * any given time. As such, this function will first check to see whether there
 * is already an outstanding fabric iocb on the wire. If so, it will put the
 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
 * issued later. Otherwise, it will issue the iocb on the wire and update the
 * fabric iocb count it indicate that there is one fabric iocb on the wire.
 *
 * Note, this implementation has a potential sending out fabric IOCBs out of
 * order. The problem is caused by the construction of the "ready" boolen does
 * not include the condition that the internal fabric IOCB list is empty. As
 * such, it is possible a fabric IOCB issued by this routine might be "jump"
 * ahead of the fabric IOCBs in the internal list.
 *
 * Return code
 *   IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
 *   IOCB_ERROR - failed to issue fabric iocb
 **/
A
Adrian Bunk 已提交
6753
static int
6754 6755 6756 6757 6758 6759 6760 6761 6762 6763 6764 6765 6766
lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
{
	unsigned long iflags;
	int ready;
	int ret;

	if (atomic_read(&phba->fabric_iocb_count) > 1)
		BUG();

	spin_lock_irqsave(&phba->hbalock, iflags);
	ready = atomic_read(&phba->fabric_iocb_count) == 0 &&
		!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);

6767 6768 6769
	if (ready)
		/* Increment fabric iocb count to hold the position */
		atomic_inc(&phba->fabric_iocb_count);
6770 6771 6772 6773 6774 6775
	spin_unlock_irqrestore(&phba->hbalock, iflags);
	if (ready) {
		iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
		iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
		iocb->iocb_flag |= LPFC_IO_FABRIC;

J
James Smart 已提交
6776 6777 6778 6779
		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched2:   ste:x%x",
			iocb->vport->port_state, 0, 0);

6780
		ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6781 6782 6783 6784 6785 6786 6787 6788 6789 6790 6791 6792 6793 6794 6795 6796

		if (ret == IOCB_ERROR) {
			iocb->iocb_cmpl = iocb->fabric_iocb_cmpl;
			iocb->fabric_iocb_cmpl = NULL;
			iocb->iocb_flag &= ~LPFC_IO_FABRIC;
			atomic_dec(&phba->fabric_iocb_count);
		}
	} else {
		spin_lock_irqsave(&phba->hbalock, iflags);
		list_add_tail(&iocb->list, &phba->fabric_iocb_list);
		spin_unlock_irqrestore(&phba->hbalock, iflags);
		ret = IOCB_SUCCESS;
	}
	return ret;
}

6797
/**
6798
 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
6799 6800 6801 6802 6803 6804 6805 6806 6807
 * @vport: pointer to a virtual N_Port data structure.
 *
 * This routine aborts all the IOCBs associated with a @vport from the
 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
 * list, removes each IOCB associated with the @vport off the list, set the
 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
 * associated with the IOCB.
 **/
A
Adrian Bunk 已提交
6808
static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822 6823 6824
{
	LIST_HEAD(completions);
	struct lpfc_hba  *phba = vport->phba;
	struct lpfc_iocbq *tmp_iocb, *piocb;

	spin_lock_irq(&phba->hbalock);
	list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
				 list) {

		if (piocb->vport != vport)
			continue;

		list_move_tail(&piocb->list, &completions);
	}
	spin_unlock_irq(&phba->hbalock);

6825 6826 6827
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
6828 6829
}

6830
/**
6831
 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
6832 6833 6834 6835 6836 6837 6838 6839 6840
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine aborts all the IOCBs associated with an @ndlp from the
 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
 * list, removes each IOCB associated with the @ndlp off the list, set the
 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
 * associated with the IOCB.
 **/
6841 6842 6843
void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
{
	LIST_HEAD(completions);
6844
	struct lpfc_hba  *phba = ndlp->phba;
6845 6846 6847 6848 6849 6850 6851 6852 6853
	struct lpfc_iocbq *tmp_iocb, *piocb;
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];

	spin_lock_irq(&phba->hbalock);
	list_for_each_entry_safe(piocb, tmp_iocb, &phba->fabric_iocb_list,
				 list) {
		if ((lpfc_check_sli_ndlp(phba, pring, piocb, ndlp))) {

			list_move_tail(&piocb->list, &completions);
6854
		}
已提交
6855
	}
6856 6857
	spin_unlock_irq(&phba->hbalock);

6858 6859 6860
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
6861 6862
}

6863
/**
6864
 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
6865 6866 6867 6868 6869 6870 6871 6872 6873
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine aborts all the IOCBs currently on the driver internal
 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
 * list, removes IOCBs off the list, set the status feild to
 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
 * the IOCB.
 **/
6874 6875 6876 6877 6878 6879 6880 6881
void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
{
	LIST_HEAD(completions);

	spin_lock_irq(&phba->hbalock);
	list_splice_init(&phba->fabric_iocb_list, &completions);
	spin_unlock_irq(&phba->hbalock);

6882 6883 6884
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
已提交
6885
}
6886 6887 6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902

/**
 * lpfc_sli4_els_xri_aborted - Slow-path process of els xri abort
 * @phba: pointer to lpfc hba data structure.
 * @axri: pointer to the els xri abort wcqe structure.
 *
 * This routine is invoked by the worker thread to process a SLI4 slow-path
 * ELS aborted xri.
 **/
void
lpfc_sli4_els_xri_aborted(struct lpfc_hba *phba,
			  struct sli4_wcqe_xri_aborted *axri)
{
	uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
	struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
	unsigned long iflag = 0;

6903 6904
	spin_lock_irqsave(&phba->hbalock, iflag);
	spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
6905 6906 6907 6908 6909 6910
	list_for_each_entry_safe(sglq_entry, sglq_next,
			&phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
		if (sglq_entry->sli4_xritag == xri) {
			list_del(&sglq_entry->list);
			list_add_tail(&sglq_entry->list,
				&phba->sli4_hba.lpfc_sgl_list);
6911 6912
			sglq_entry->state = SGL_FREED;
			spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
6913 6914 6915 6916
			spin_unlock_irqrestore(&phba->hbalock, iflag);
			return;
		}
	}
6917 6918 6919 6920 6921 6922 6923 6924 6925
	spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
	sglq_entry = __lpfc_get_active_sglq(phba, xri);
	if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
		spin_unlock_irqrestore(&phba->hbalock, iflag);
		return;
	}
	sglq_entry->state = SGL_XRI_ABORTED;
	spin_unlock_irqrestore(&phba->hbalock, iflag);
	return;
6926
}