lpfc_els.c 92.5 KB
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/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
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 * Fibre Channel Host Bus Adapters.                                *
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 * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
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 * EMULEX and SLI are trademarks of Emulex.                        *
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 * www.emulex.com                                                  *
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 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
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 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
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 * 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.                                     *
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 *******************************************************************/

#include <linux/blkdev.h>
#include <linux/pci.h>
#include <linux/interrupt.h>

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#include <scsi/scsi.h>
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#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>

#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"

static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
			  struct lpfc_iocbq *);
static int lpfc_max_els_tries = 3;

static int
lpfc_els_chk_latt(struct lpfc_hba * phba)
{
	struct lpfc_sli *psli;
	LPFC_MBOXQ_t *mbox;
	uint32_t ha_copy;
	int rc;

	psli = &phba->sli;

	if ((phba->hba_state >= LPFC_HBA_READY) ||
	    (phba->hba_state == LPFC_LINK_DOWN))
		return 0;

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

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

	/* Pending Link Event during Discovery */
	lpfc_printf_log(phba, KERN_WARNING, LOG_DISCOVERY,
			"%d:0237 Pending Link Event during "
			"Discovery: State x%x\n",
			phba->brd_no, phba->hba_state);

	/* 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.
	 */
	spin_lock_irq(phba->host->host_lock);
	phba->fc_flag |= FC_ABORT_DISCOVERY;
	spin_unlock_irq(phba->host->host_lock);

	if (phba->hba_state != LPFC_CLEAR_LA) {
		if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL))) {
			phba->hba_state = LPFC_CLEAR_LA;
			lpfc_clear_la(phba, mbox);
			mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la;
			rc = lpfc_sli_issue_mbox (phba, mbox,
						  (MBX_NOWAIT | MBX_STOP_IOCB));
			if (rc == MBX_NOT_FINISHED) {
				mempool_free(mbox, phba->mbox_mem_pool);
				phba->hba_state = LPFC_HBA_ERROR;
			}
		}
	}

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	return 1;
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}

static struct lpfc_iocbq *
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lpfc_prep_els_iocb(struct lpfc_hba * phba, uint8_t expectRsp,
		   uint16_t cmdSize, uint8_t retry, struct lpfc_nodelist * ndlp,
		   uint32_t did, uint32_t elscmd)
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{
	struct lpfc_sli_ring *pring;
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	struct lpfc_iocbq *elsiocb;
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	struct lpfc_dmabuf *pcmd, *prsp, *pbuflist;
	struct ulp_bde64 *bpl;
	IOCB_t *icmd;

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

	if (phba->hba_state < LPFC_LINK_UP)
		return  NULL;

	/* Allocate buffer for  command iocb */
	spin_lock_irq(phba->host->host_lock);
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	elsiocb = lpfc_sli_get_iocbq(phba);
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	spin_unlock_irq(phba->host->host_lock);

	if (elsiocb == NULL)
		return NULL;
	icmd = &elsiocb->iocb;

	/* fill in BDEs for command */
	/* Allocate buffer for command payload */
	if (((pcmd = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL)) == 0) ||
	    ((pcmd->virt = lpfc_mbuf_alloc(phba,
					   MEM_PRI, &(pcmd->phys))) == 0)) {
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		kfree(pcmd);
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		spin_lock_irq(phba->host->host_lock);
		lpfc_sli_release_iocbq(phba, elsiocb);
		spin_unlock_irq(phba->host->host_lock);
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		return NULL;
	}

	INIT_LIST_HEAD(&pcmd->list);

	/* Allocate buffer for response payload */
	if (expectRsp) {
		prsp = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
		if (prsp)
			prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
						     &prsp->phys);
		if (prsp == 0 || prsp->virt == 0) {
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			kfree(prsp);
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			lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
			kfree(pcmd);
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			spin_lock_irq(phba->host->host_lock);
			lpfc_sli_release_iocbq(phba, elsiocb);
			spin_unlock_irq(phba->host->host_lock);
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			return NULL;
		}
		INIT_LIST_HEAD(&prsp->list);
	} else {
		prsp = NULL;
	}

	/* Allocate buffer for Buffer ptr list */
	pbuflist = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
	if (pbuflist)
	    pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
					     &pbuflist->phys);
	if (pbuflist == 0 || pbuflist->virt == 0) {
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		spin_lock_irq(phba->host->host_lock);
		lpfc_sli_release_iocbq(phba, elsiocb);
		spin_unlock_irq(phba->host->host_lock);
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		lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
		lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
		kfree(pcmd);
		kfree(prsp);
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		kfree(pbuflist);
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		return NULL;
	}

	INIT_LIST_HEAD(&pbuflist->list);

	icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
	icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
	icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BDL;
	if (expectRsp) {
		icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
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		icmd->un.elsreq64.remoteID = did;	/* DID */
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		icmd->ulpCommand = CMD_ELS_REQUEST64_CR;
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		icmd->ulpTimeout = phba->fc_ratov * 2;
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	} else {
		icmd->un.elsreq64.bdl.bdeSize = sizeof (struct ulp_bde64);
		icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
	}

	icmd->ulpBdeCount = 1;
	icmd->ulpLe = 1;
	icmd->ulpClass = CLASS3;

	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;
		bpl->tus.f.bdeFlags = BUFF_USE_RCV;
		bpl->tus.w = le32_to_cpu(bpl->tus.w);
	}

	/* Save for completion so we can release these resources */
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	elsiocb->context1 = lpfc_nlp_get(ndlp);
	elsiocb->context2 = pcmd;
	elsiocb->context3 = pbuflist;
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	elsiocb->retry = retry;
	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> */
		lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
				"%d:0116 Xmit ELS command x%x to remote "
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				"NPORT x%x I/O tag: x%x, HBA state: x%x\n",
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				phba->brd_no, elscmd,
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				did, elsiocb->iotag, phba->hba_state);
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	} else {
		/* Xmit ELS response <elsCmd> to remote NPORT <did> */
		lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
				"%d:0117 Xmit ELS response x%x to remote "
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				"NPORT x%x I/O tag: x%x, size: x%x\n",
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				phba->brd_no, elscmd,
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				ndlp->nlp_DID, elsiocb->iotag, cmdSize);
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	}

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	return elsiocb;
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}


static int
lpfc_cmpl_els_flogi_fabric(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
		struct serv_parm *sp, IOCB_t *irsp)
{
	LPFC_MBOXQ_t *mbox;
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	struct lpfc_dmabuf *mp;
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	int rc;

	spin_lock_irq(phba->host->host_lock);
	phba->fc_flag |= FC_FABRIC;
	spin_unlock_irq(phba->host->host_lock);

	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) {
		spin_lock_irq(phba->host->host_lock);
		phba->fc_flag |= FC_PUBLIC_LOOP;
		spin_unlock_irq(phba->host->host_lock);
	} else {
		/*
		 * If we are a N-port connected to a Fabric, fixup sparam's so
		 * logins to devices on remote loops work.
		 */
		phba->fc_sparam.cmn.altBbCredit = 1;
	}

	phba->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
	memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
	memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
	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));

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

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

	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
	if (rc == MBX_NOT_FINISHED)
		goto fail_free_mbox;

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

	if (lpfc_reg_login(phba, Fabric_DID, (uint8_t *) sp, mbox, 0))
		goto fail_free_mbox;

	mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
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	mbox->context2 = lpfc_nlp_get(ndlp);
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	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT | MBX_STOP_IOCB);
	if (rc == MBX_NOT_FINISHED)
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		goto fail_issue_reg_login;
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	return 0;

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 fail_issue_reg_login:
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	lpfc_nlp_put(ndlp);
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	mp = (struct lpfc_dmabuf *) mbox->context1;
	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	kfree(mp);
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 fail_free_mbox:
	mempool_free(mbox, phba->mbox_mem_pool);
 fail:
	return -ENXIO;
}

/*
 * We FLOGIed into an NPort, initiate pt2pt protocol
 */
static int
lpfc_cmpl_els_flogi_nport(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp,
		struct serv_parm *sp)
{
	LPFC_MBOXQ_t *mbox;
	int rc;

	spin_lock_irq(phba->host->host_lock);
	phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
	spin_unlock_irq(phba->host->host_lock);

	phba->fc_edtov = FF_DEF_EDTOV;
	phba->fc_ratov = FF_DEF_RATOV;
	rc = memcmp(&phba->fc_portname, &sp->portName,
			sizeof(struct lpfc_name));
	if (rc >= 0) {
		/* This side will initiate the PLOGI */
		spin_lock_irq(phba->host->host_lock);
		phba->fc_flag |= FC_PT2PT_PLOGI;
		spin_unlock_irq(phba->host->host_lock);

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

		/* not equal */
		if (rc)
			phba->fc_myDID = PT2PT_LocalID;

		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;
		rc = lpfc_sli_issue_mbox(phba, mbox,
				MBX_NOWAIT | MBX_STOP_IOCB);
		if (rc == MBX_NOT_FINISHED) {
			mempool_free(mbox, phba->mbox_mem_pool);
			goto fail;
		}
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		lpfc_nlp_put(ndlp);
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		ndlp = lpfc_findnode_did(phba, PT2PT_RemoteID);
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		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;

			lpfc_nlp_init(phba, ndlp, PT2PT_RemoteID);
		}

		memcpy(&ndlp->nlp_portname, &sp->portName,
				sizeof(struct lpfc_name));
		memcpy(&ndlp->nlp_nodename, &sp->nodeName,
				sizeof(struct lpfc_name));
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		lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
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		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
	} else {
		/* This side will wait for the PLOGI */
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		lpfc_nlp_put(ndlp);
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	}

	spin_lock_irq(phba->host->host_lock);
	phba->fc_flag |= FC_PT2PT;
	spin_unlock_irq(phba->host->host_lock);

	/* Start discovery - this should just do CLEAR_LA */
	lpfc_disc_start(phba);
	return 0;
 fail:
	return -ENXIO;
}

static void
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lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
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{
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_nodelist *ndlp = cmdiocb->context1;
	struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
	struct serv_parm *sp;
	int rc;

	/* Check to see if link went down during discovery */
	if (lpfc_els_chk_latt(phba)) {
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		lpfc_nlp_put(ndlp);
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		goto out;
	}

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			goto out;
		}
		/* FLOGI failed, so there is no fabric */
		spin_lock_irq(phba->host->host_lock);
		phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
		spin_unlock_irq(phba->host->host_lock);

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		/* If private loop, then allow max outstanding els to be
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		 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
		 * alpa map would take too long otherwise.
		 */
		if (phba->alpa_map[0] == 0) {
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			phba->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
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		}

		/* FLOGI failure */
		lpfc_printf_log(phba,
				KERN_INFO,
				LOG_ELS,
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				"%d:0100 FLOGI failure Data: x%x x%x x%x\n",
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				phba->brd_no,
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				irsp->ulpStatus, irsp->un.ulpWord[4],
				irsp->ulpTimeout);
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		goto flogifail;
	}

	/*
	 * 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 */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0101 FLOGI completes sucessfully "
			"Data: x%x x%x x%x x%x\n",
			phba->brd_no,
			irsp->un.ulpWord[4], sp->cmn.e_d_tov,
			sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);

	if (phba->hba_state == LPFC_FLOGI) {
		/*
		 * If Common Service Parameters indicate Nport
		 * we are point to point, if Fport we are Fabric.
		 */
		if (sp->cmn.fPort)
			rc = lpfc_cmpl_els_flogi_fabric(phba, ndlp, sp, irsp);
		else
			rc = lpfc_cmpl_els_flogi_nport(phba, ndlp, sp);

		if (!rc)
			goto out;
	}

flogifail:
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	lpfc_nlp_put(ndlp);
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	if (irsp->ulpStatus != IOSTAT_LOCAL_REJECT ||
	    (irsp->un.ulpWord[4] != IOERR_SLI_ABORTED &&
	     irsp->un.ulpWord[4] != IOERR_SLI_DOWN)) {
		/* FLOGI failed, so just use loop map to make discovery list */
		lpfc_disc_list_loopmap(phba);

		/* Start discovery */
		lpfc_disc_start(phba);
	}

out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

static int
lpfc_issue_els_flogi(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
		     uint8_t retry)
{
	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];

	cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
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	elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
						 ndlp->nlp_DID, ELS_CMD_FLOGI);
	if (!elsiocb)
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		return 1;
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	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;
	pcmd += sizeof (uint32_t);
	memcpy(pcmd, &phba->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;
	if (sp->cmn.fcphLow < FC_PH3)
		sp->cmn.fcphLow = FC_PH3;
	if (sp->cmn.fcphHigh < FC_PH3)
		sp->cmn.fcphHigh = FC_PH3;

	tmo = phba->fc_ratov;
	phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
	lpfc_set_disctmo(phba);
	phba->fc_ratov = tmo;

	phba->fc_stat.elsXmitFLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
	spin_lock_irq(phba->host->host_lock);
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	spin_unlock_irq(phba->host->host_lock);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
556
		return 1;
已提交
557
	}
558
	return 0;
已提交
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}

int
lpfc_els_abort_flogi(struct lpfc_hba * phba)
{
	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,
			"%d:0201 Abort outstanding I/O on NPort x%x\n",
			phba->brd_no, Fabric_DID);

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

	/*
	 * Check the txcmplq for an iocb that matches the nport the driver is
	 * searching for.
	 */
	spin_lock_irq(phba->host->host_lock);
	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
		icmd = &iocb->iocb;
		if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR) {
			ndlp = (struct lpfc_nodelist *)(iocb->context1);
585 586
			if (ndlp && (ndlp->nlp_DID == Fabric_DID))
				lpfc_sli_issue_abort_iotag(phba, pring, iocb);
已提交
587 588 589 590 591 592 593 594
		}
	}
	spin_unlock_irq(phba->host->host_lock);

	return 0;
}

int
595
lpfc_initial_flogi(struct lpfc_hba *phba)
已提交
596 597 598
{
	struct lpfc_nodelist *ndlp;

599
	/* First look for the Fabric ndlp */
600
	ndlp = lpfc_findnode_did(phba, Fabric_DID);
601
	if (!ndlp) {
已提交
602
		/* Cannot find existing Fabric ndlp, so allocate a new one */
603 604 605
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 0;
已提交
606
		lpfc_nlp_init(phba, ndlp, Fabric_DID);
607
	} else {
608
		lpfc_dequeue_node(phba, ndlp);
已提交
609 610
	}
	if (lpfc_issue_els_flogi(phba, ndlp, 0)) {
611
		lpfc_nlp_put(ndlp);
已提交
612
	}
613
	return 1;
已提交
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}

static void
lpfc_more_plogi(struct lpfc_hba * phba)
{
	int sentplogi;

	if (phba->num_disc_nodes)
		phba->num_disc_nodes--;

	/* Continue discovery with <num_disc_nodes> PLOGIs to go */
	lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
			"%d:0232 Continue discovery with %d PLOGIs to go "
			"Data: x%x x%x x%x\n",
			phba->brd_no, phba->num_disc_nodes, phba->fc_plogi_cnt,
			phba->fc_flag, phba->hba_state);

	/* Check to see if there are more PLOGIs to be sent */
	if (phba->fc_flag & FC_NLP_MORE) {
		/* go thru NPR list and issue any remaining ELS PLOGIs */
		sentplogi = lpfc_els_disc_plogi(phba);
	}
	return;
}

639
static struct lpfc_nodelist *
640
lpfc_plogi_confirm_nport(struct lpfc_hba *phba, struct lpfc_dmabuf *prsp,
641 642 643 644 645 646 647 648
			 struct lpfc_nodelist *ndlp)
{
	struct lpfc_nodelist *new_ndlp;
	uint32_t *lp;
	struct serv_parm *sp;
	uint8_t name[sizeof (struct lpfc_name)];
	uint32_t rc;

J
James Smart 已提交
649 650 651 652 653 654
	/* 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;

655 656
	lp = (uint32_t *) prsp->virt;
	sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
657
	memset(name, 0, sizeof(struct lpfc_name));
658

659
	/* Now we find out if the NPort we are logging into, matches the WWPN
660 661
	 * we have for that ndlp. If not, we have some work to do.
	 */
662
	new_ndlp = lpfc_findnode_wwpn(phba, &sp->portName);
663

664
	if (new_ndlp == ndlp)
665 666 667
		return ndlp;

	if (!new_ndlp) {
668 669 670 671
		rc =
		   memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name));
		if (!rc)
			return ndlp;
672 673 674 675 676 677 678 679 680
		new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
		if (!new_ndlp)
			return ndlp;

		lpfc_nlp_init(phba, new_ndlp, ndlp->nlp_DID);
	}

	lpfc_unreg_rpi(phba, new_ndlp);
	new_ndlp->nlp_DID = ndlp->nlp_DID;
681
	new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
682
	lpfc_nlp_set_state(phba, new_ndlp, ndlp->nlp_state);
683 684

	/* Move this back to NPR list */
685 686
	if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0)
		lpfc_drop_node(phba, ndlp);
687 688 689
	else {
		lpfc_unreg_rpi(phba, ndlp);
		ndlp->nlp_DID = 0; /* Two ndlps cannot have the same did */
690
		lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
691
	}
692 693 694
	return new_ndlp;
}

已提交
695 696 697 698 699 700
static void
lpfc_cmpl_els_plogi(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
		    struct lpfc_iocbq * rspiocb)
{
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
701
	struct lpfc_dmabuf *prsp;
已提交
702 703 704 705 706 707
	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;
708
	ndlp = lpfc_findnode_did(phba, irsp->un.elsreq64.remoteID);
709 710
	if (!ndlp)
		goto out;
已提交
711 712 713 714 715

	/* Since ndlp can be freed in the disc state machine, note if this node
	 * is being used during discovery.
	 */
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
716
	spin_lock_irq(phba->host->host_lock);
717
	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
718
	spin_unlock_irq(phba->host->host_lock);
已提交
719 720 721 722 723
	rc   = 0;

	/* PLOGI completes to NPort <nlp_DID> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0102 PLOGI completes to NPort x%x "
724
			"Data: x%x x%x x%x x%x x%x\n",
已提交
725
			phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
726 727
			irsp->un.ulpWord[4], irsp->ulpTimeout, disc,
			phba->num_disc_nodes);
已提交
728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756

	/* Check to see if link went down during discovery */
	if (lpfc_els_chk_latt(phba)) {
		spin_lock_irq(phba->host->host_lock);
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
		spin_unlock_irq(phba->host->host_lock);
		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) {
				spin_lock_irq(phba->host->host_lock);
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
				spin_unlock_irq(phba->host->host_lock);
			}
			goto out;
		}

		/* PLOGI failed */
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
		if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
		   ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
757
		   (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
已提交
758
		   (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
759
			rc = NLP_STE_FREED_NODE;
760
		} else {
已提交
761 762 763 764 765
			rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb,
					NLP_EVT_CMPL_PLOGI);
		}
	} else {
		/* Good status, call state machine */
766 767 768 769
		prsp = list_entry(((struct lpfc_dmabuf *)
			cmdiocb->context2)->list.next,
			struct lpfc_dmabuf, list);
		ndlp = lpfc_plogi_confirm_nport(phba, prsp, ndlp);
已提交
770 771 772 773 774 775 776 777
		rc = lpfc_disc_state_machine(phba, ndlp, cmdiocb,
					NLP_EVT_CMPL_PLOGI);
	}

	if (disc && phba->num_disc_nodes) {
		/* Check to see if there are more PLOGIs to be sent */
		lpfc_more_plogi(phba);

778 779 780 781
		if (phba->num_disc_nodes == 0) {
			spin_lock_irq(phba->host->host_lock);
			phba->fc_flag &= ~FC_NDISC_ACTIVE;
			spin_unlock_irq(phba->host->host_lock);
已提交
782

783 784 785 786 787 788 789 790 791 792 793 794 795 796
			lpfc_can_disctmo(phba);
			if (phba->fc_flag & FC_RSCN_MODE) {
				/*
				 * Check to see if more RSCNs came in while
				 * we were processing this one.
				 */
				if ((phba->fc_rscn_id_cnt == 0) &&
			    	(!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
					spin_lock_irq(phba->host->host_lock);
					phba->fc_flag &= ~FC_RSCN_MODE;
					spin_unlock_irq(phba->host->host_lock);
				} else {
					lpfc_els_handle_rscn(phba);
				}
已提交
797 798 799 800 801 802 803 804 805 806
			}
		}
	}

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

int
807
lpfc_issue_els_plogi(struct lpfc_hba * phba, uint32_t did, uint8_t retry)
已提交
808 809 810 811 812 813 814 815 816 817 818 819 820
{
	struct serv_parm *sp;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */

	cmdsize = (sizeof (uint32_t) + sizeof (struct serv_parm));
R
Randy Dunlap 已提交
821
	elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, NULL, did,
822
								ELS_CMD_PLOGI);
823 824
	if (!elsiocb)
		return 1;
已提交
825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846

	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;
	pcmd += sizeof (uint32_t);
	memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
	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;

	phba->fc_stat.elsXmitPLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
	spin_lock_irq(phba->host->host_lock);
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		spin_unlock_irq(phba->host->host_lock);
		lpfc_els_free_iocb(phba, elsiocb);
847
		return 1;
已提交
848 849
	}
	spin_unlock_irq(phba->host->host_lock);
850
	return 0;
已提交
851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873
}

static void
lpfc_cmpl_els_prli(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
		   struct lpfc_iocbq * rspiocb)
{
	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;
	spin_lock_irq(phba->host->host_lock);
	ndlp->nlp_flag &= ~NLP_PRLI_SND;
	spin_unlock_irq(phba->host->host_lock);

	/* PRLI completes to NPort <nlp_DID> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0103 PRLI completes to NPort x%x "
874
			"Data: x%x x%x x%x x%x\n",
已提交
875
			phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
876 877
			irsp->un.ulpWord[4], irsp->ulpTimeout,
			phba->num_disc_nodes);
已提交
878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893

	phba->fc_prli_sent--;
	/* Check to see if link went down during discovery */
	if (lpfc_els_chk_latt(phba))
		goto out;

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			goto out;
		}
		/* PRLI failed */
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
		if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
		   ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
894
		   (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
已提交
895 896
		   (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
			goto out;
897
		} else {
已提交
898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926
			lpfc_disc_state_machine(phba, ndlp, cmdiocb,
					NLP_EVT_CMPL_PRLI);
		}
	} else {
		/* Good status, call state machine */
		lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_PRLI);
	}

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

int
lpfc_issue_els_prli(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
		    uint8_t retry)
{
	PRLI *npr;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */

	cmdsize = (sizeof (uint32_t) + sizeof (PRLI));
927 928 929
	elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
					ndlp->nlp_DID, ELS_CMD_PRLI);
	if (!elsiocb)
930
		return 1;
已提交
931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965

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

	/* For PRLI request, remainder of payload is service parameters */
	memset(pcmd, 0, (sizeof (PRLI) + sizeof (uint32_t)));
	*((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
	pcmd += sizeof (uint32_t);

	/* 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;

	phba->fc_stat.elsXmitPRLI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
	spin_lock_irq(phba->host->host_lock);
	ndlp->nlp_flag |= NLP_PRLI_SND;
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		ndlp->nlp_flag &= ~NLP_PRLI_SND;
		spin_unlock_irq(phba->host->host_lock);
		lpfc_els_free_iocb(phba, elsiocb);
966
		return 1;
已提交
967 968 969
	}
	spin_unlock_irq(phba->host->host_lock);
	phba->fc_prli_sent++;
970
	return 0;
已提交
971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043
}

static void
lpfc_more_adisc(struct lpfc_hba * phba)
{
	int sentadisc;

	if (phba->num_disc_nodes)
		phba->num_disc_nodes--;

	/* Continue discovery with <num_disc_nodes> ADISCs to go */
	lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
			"%d:0210 Continue discovery with %d ADISCs to go "
			"Data: x%x x%x x%x\n",
			phba->brd_no, phba->num_disc_nodes, phba->fc_adisc_cnt,
			phba->fc_flag, phba->hba_state);

	/* Check to see if there are more ADISCs to be sent */
	if (phba->fc_flag & FC_NLP_MORE) {
		lpfc_set_disctmo(phba);

		/* go thru NPR list and issue any remaining ELS ADISCs */
		sentadisc = lpfc_els_disc_adisc(phba);
	}
	return;
}

static void
lpfc_rscn_disc(struct lpfc_hba * phba)
{
	/* RSCN discovery */
	/* go thru NPR list and issue ELS PLOGIs */
	if (phba->fc_npr_cnt) {
		if (lpfc_els_disc_plogi(phba))
			return;
	}
	if (phba->fc_flag & FC_RSCN_MODE) {
		/* Check to see if more RSCNs came in while we were
		 * processing this one.
		 */
		if ((phba->fc_rscn_id_cnt == 0) &&
		    (!(phba->fc_flag & FC_RSCN_DISCOVERY))) {
			spin_lock_irq(phba->host->host_lock);
			phba->fc_flag &= ~FC_RSCN_MODE;
			spin_unlock_irq(phba->host->host_lock);
		} else {
			lpfc_els_handle_rscn(phba);
		}
	}
}

static void
lpfc_cmpl_els_adisc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
		    struct lpfc_iocbq * rspiocb)
{
	IOCB_t *irsp;
	struct lpfc_sli *psli;
	struct lpfc_nodelist *ndlp;
	LPFC_MBOXQ_t *mbox;
	int disc, rc;

	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;

	/* Since ndlp can be freed in the disc state machine, note if this node
	 * is being used during discovery.
	 */
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1044 1045 1046
	spin_lock_irq(phba->host->host_lock);
	ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
	spin_unlock_irq(phba->host->host_lock);
已提交
1047 1048 1049 1050

	/* ADISC completes to NPort <nlp_DID> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0104 ADISC completes to NPort x%x "
1051
			"Data: x%x x%x x%x x%x x%x\n",
已提交
1052
			phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
1053 1054
			irsp->un.ulpWord[4], irsp->ulpTimeout, disc,
			phba->num_disc_nodes);
已提交
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077

	/* Check to see if link went down during discovery */
	if (lpfc_els_chk_latt(phba)) {
		spin_lock_irq(phba->host->host_lock);
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
		spin_unlock_irq(phba->host->host_lock);
		goto out;
	}

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			if (disc) {
				spin_lock_irq(phba->host->host_lock);
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
				spin_unlock_irq(phba->host->host_lock);
				lpfc_set_disctmo(phba);
			}
			goto out;
		}
		/* ADISC failed */
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1078 1079 1080 1081
		if ((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
		   ((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
		   (irsp->un.ulpWord[4] != IOERR_LINK_DOWN) &&
		   (irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) {
已提交
1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114
			lpfc_disc_state_machine(phba, ndlp, cmdiocb,
					NLP_EVT_CMPL_ADISC);
		}
	} else {
		/* Good status, call state machine */
		lpfc_disc_state_machine(phba, ndlp, cmdiocb,
					NLP_EVT_CMPL_ADISC);
	}

	if (disc && phba->num_disc_nodes) {
		/* Check to see if there are more ADISCs to be sent */
		lpfc_more_adisc(phba);

		/* Check to see if we are done with ADISC authentication */
		if (phba->num_disc_nodes == 0) {
			lpfc_can_disctmo(phba);
			/* If we get here, there is nothing left to wait for */
			if ((phba->hba_state < LPFC_HBA_READY) &&
			    (phba->hba_state != LPFC_CLEAR_LA)) {
				/* Link up discovery */
				if ((mbox = mempool_alloc(phba->mbox_mem_pool,
							  GFP_KERNEL))) {
					phba->hba_state = LPFC_CLEAR_LA;
					lpfc_clear_la(phba, mbox);
					mbox->mbox_cmpl =
					    lpfc_mbx_cmpl_clear_la;
					rc = lpfc_sli_issue_mbox
						(phba, mbox,
						 (MBX_NOWAIT | MBX_STOP_IOCB));
					if (rc == MBX_NOT_FINISHED) {
						mempool_free(mbox,
						     phba->mbox_mem_pool);
						lpfc_disc_flush_list(phba);
1115
						psli->ring[(psli->extra_ring)].
已提交
1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153
						    flag &=
						    ~LPFC_STOP_IOCB_EVENT;
						psli->ring[(psli->fcp_ring)].
						    flag &=
						    ~LPFC_STOP_IOCB_EVENT;
						psli->ring[(psli->next_ring)].
						    flag &=
						    ~LPFC_STOP_IOCB_EVENT;
						phba->hba_state =
						    LPFC_HBA_READY;
					}
				}
			} else {
				lpfc_rscn_disc(phba);
			}
		}
	}
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

int
lpfc_issue_els_adisc(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
		     uint8_t retry)
{
	ADISC *ap;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */

	cmdsize = (sizeof (uint32_t) + sizeof (ADISC));
1154 1155 1156
	elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
						ndlp->nlp_DID, ELS_CMD_ADISC);
	if (!elsiocb)
1157
		return 1;
已提交
1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180

	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;
	pcmd += sizeof (uint32_t);

	/* Fill in ADISC payload */
	ap = (ADISC *) pcmd;
	ap->hardAL_PA = phba->fc_pref_ALPA;
	memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
	memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
	ap->DID = be32_to_cpu(phba->fc_myDID);

	phba->fc_stat.elsXmitADISC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
	spin_lock_irq(phba->host->host_lock);
	ndlp->nlp_flag |= NLP_ADISC_SND;
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		ndlp->nlp_flag &= ~NLP_ADISC_SND;
		spin_unlock_irq(phba->host->host_lock);
		lpfc_els_free_iocb(phba, elsiocb);
1181
		return 1;
已提交
1182 1183
	}
	spin_unlock_irq(phba->host->host_lock);
1184
	return 0;
已提交
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207
}

static void
lpfc_cmpl_els_logo(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
		   struct lpfc_iocbq * rspiocb)
{
	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;
	spin_lock_irq(phba->host->host_lock);
	ndlp->nlp_flag &= ~NLP_LOGO_SND;
	spin_unlock_irq(phba->host->host_lock);

	/* LOGO completes to NPort <nlp_DID> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0105 LOGO completes to NPort x%x "
1208
			"Data: x%x x%x x%x x%x\n",
已提交
1209
			phba->brd_no, ndlp->nlp_DID, irsp->ulpStatus,
1210 1211
			irsp->un.ulpWord[4], irsp->ulpTimeout,
			phba->num_disc_nodes);
已提交
1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226

	/* Check to see if link went down during discovery */
	if (lpfc_els_chk_latt(phba))
		goto out;

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			goto out;
		}
		/* LOGO failed */
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
		if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
		   ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
1227
		   (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
已提交
1228 1229
		   (irsp->un.ulpWord[4] == IOERR_SLI_DOWN))) {
			goto out;
1230
		} else {
已提交
1231 1232 1233 1234
			lpfc_disc_state_machine(phba, ndlp, cmdiocb,
					NLP_EVT_CMPL_LOGO);
		}
	} else {
1235 1236 1237
		/* Good status, call state machine.
		 * This will unregister the rpi if needed.
		 */
已提交
1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259
		lpfc_disc_state_machine(phba, ndlp, cmdiocb, NLP_EVT_CMPL_LOGO);
	}

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

int
lpfc_issue_els_logo(struct lpfc_hba * phba, struct lpfc_nodelist * ndlp,
		    uint8_t retry)
{
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;

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

1260
	cmdsize = (2 * sizeof (uint32_t)) + sizeof (struct lpfc_name);
1261 1262 1263
	elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
						ndlp->nlp_DID, ELS_CMD_LOGO);
	if (!elsiocb)
1264
		return 1;
已提交
1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283

	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(phba->fc_myDID);
	pcmd += sizeof (uint32_t);
	memcpy(pcmd, &phba->fc_portname, sizeof (struct lpfc_name));

	phba->fc_stat.elsXmitLOGO++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
	spin_lock_irq(phba->host->host_lock);
	ndlp->nlp_flag |= NLP_LOGO_SND;
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		ndlp->nlp_flag &= ~NLP_LOGO_SND;
		spin_unlock_irq(phba->host->host_lock);
		lpfc_els_free_iocb(phba, elsiocb);
1284
		return 1;
已提交
1285 1286
	}
	spin_unlock_irq(phba->host->host_lock);
1287
	return 0;
已提交
1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301
}

static void
lpfc_cmpl_els_cmd(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
		  struct lpfc_iocbq * rspiocb)
{
	IOCB_t *irsp;

	irsp = &rspiocb->iocb;

	/* ELS cmd tag <ulpIoTag> completes */
	lpfc_printf_log(phba,
			KERN_INFO,
			LOG_ELS,
1302
			"%d:0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
已提交
1303
			phba->brd_no,
1304 1305
			irsp->ulpIoTag, irsp->ulpStatus,
			irsp->un.ulpWord[4], irsp->ulpTimeout);
已提交
1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326

	/* Check to see if link went down during discovery */
	lpfc_els_chk_latt(phba);
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

int
lpfc_issue_els_scr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
{
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */
	cmdsize = (sizeof (uint32_t) + sizeof (SCR));
1327 1328 1329
	ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
	if (!ndlp)
		return 1;
已提交
1330 1331 1332

	lpfc_nlp_init(phba, ndlp, nportid);

1333 1334 1335
	elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
						ndlp->nlp_DID, ELS_CMD_SCR);
	if (!elsiocb) {
1336
		lpfc_nlp_put(ndlp);
1337
		return 1;
已提交
1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_SCR;
	pcmd += sizeof (uint32_t);

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

	phba->fc_stat.elsXmitSCR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
	spin_lock_irq(phba->host->host_lock);
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		spin_unlock_irq(phba->host->host_lock);
1355
		lpfc_nlp_put(ndlp);
已提交
1356
		lpfc_els_free_iocb(phba, elsiocb);
1357
		return 1;
已提交
1358 1359
	}
	spin_unlock_irq(phba->host->host_lock);
1360
	lpfc_nlp_put(ndlp);
1361
	return 0;
已提交
1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380
}

static int
lpfc_issue_els_farpr(struct lpfc_hba * phba, uint32_t nportid, uint8_t retry)
{
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	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;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */
	cmdsize = (sizeof (uint32_t) + sizeof (FARP));
1381 1382 1383
	ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
	if (!ndlp)
		return 1;
已提交
1384 1385
	lpfc_nlp_init(phba, ndlp, nportid);

1386 1387 1388
	elsiocb = lpfc_prep_els_iocb(phba, 1, cmdsize, retry, ndlp,
						ndlp->nlp_DID, ELS_CMD_RNID);
	if (!elsiocb) {
1389
		lpfc_nlp_put(ndlp);
1390
		return 1;
已提交
1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
	pcmd += sizeof (uint32_t);

	/* Fill in FARPR payload */
	fp = (FARP *) (pcmd);
	memset(fp, 0, sizeof (FARP));
	lp = (uint32_t *) pcmd;
	*lp++ = be32_to_cpu(nportid);
	*lp++ = be32_to_cpu(phba->fc_myDID);
	fp->Rflags = 0;
	fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);

	memcpy(&fp->RportName, &phba->fc_portname, sizeof (struct lpfc_name));
	memcpy(&fp->RnodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
1410
	if ((ondlp = lpfc_findnode_did(phba, nportid))) {
已提交
1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421
		memcpy(&fp->OportName, &ondlp->nlp_portname,
		       sizeof (struct lpfc_name));
		memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
		       sizeof (struct lpfc_name));
	}

	phba->fc_stat.elsXmitFARPR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
	spin_lock_irq(phba->host->host_lock);
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		spin_unlock_irq(phba->host->host_lock);
1422
		lpfc_nlp_put(ndlp);
已提交
1423
		lpfc_els_free_iocb(phba, elsiocb);
1424
		return 1;
已提交
1425 1426
	}
	spin_unlock_irq(phba->host->host_lock);
1427
	lpfc_nlp_put(ndlp);
1428
	return 0;
已提交
1429 1430
}

1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448
void
lpfc_cancel_retry_delay_tmo(struct lpfc_hba *phba, struct lpfc_nodelist * nlp)
{
	nlp->nlp_flag &= ~NLP_DELAY_TMO;
	del_timer_sync(&nlp->nlp_delayfunc);
	nlp->nlp_last_elscmd = 0;

	if (!list_empty(&nlp->els_retry_evt.evt_listp))
		list_del_init(&nlp->els_retry_evt.evt_listp);

	if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
		nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
		if (phba->num_disc_nodes) {
			/* Check to see if there are more
			 * PLOGIs to be sent
			 */
			lpfc_more_plogi(phba);

1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464
			if (phba->num_disc_nodes == 0) {
				phba->fc_flag &= ~FC_NDISC_ACTIVE;
				lpfc_can_disctmo(phba);
				if (phba->fc_flag & FC_RSCN_MODE) {
					/*
					 * Check to see if more RSCNs
					 * came in while we were
					 * processing this one.
					 */
					if((phba->fc_rscn_id_cnt==0) &&
					 !(phba->fc_flag & FC_RSCN_DISCOVERY)) {
						phba->fc_flag &= ~FC_RSCN_MODE;
					}
					else {
						lpfc_els_handle_rscn(phba);
					}
1465 1466 1467 1468 1469 1470 1471
				}
			}
		}
	}
	return;
}

已提交
1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509
void
lpfc_els_retry_delay(unsigned long ptr)
{
	struct lpfc_nodelist *ndlp;
	struct lpfc_hba *phba;
	unsigned long iflag;
	struct lpfc_work_evt  *evtp;

	ndlp = (struct lpfc_nodelist *)ptr;
	phba = ndlp->nlp_phba;
	evtp = &ndlp->els_retry_evt;

	spin_lock_irqsave(phba->host->host_lock, iflag);
	if (!list_empty(&evtp->evt_listp)) {
		spin_unlock_irqrestore(phba->host->host_lock, iflag);
		return;
	}

	evtp->evt_arg1  = ndlp;
	evtp->evt       = LPFC_EVT_ELS_RETRY;
	list_add_tail(&evtp->evt_listp, &phba->work_list);
	if (phba->work_wait)
		wake_up(phba->work_wait);

	spin_unlock_irqrestore(phba->host->host_lock, iflag);
	return;
}

void
lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
{
	struct lpfc_hba *phba;
	uint32_t cmd;
	uint32_t did;
	uint8_t retry;

	phba = ndlp->nlp_phba;
	spin_lock_irq(phba->host->host_lock);
1510 1511 1512
	did = ndlp->nlp_DID;
	cmd = ndlp->nlp_last_elscmd;
	ndlp->nlp_last_elscmd = 0;
已提交
1513 1514 1515 1516 1517 1518 1519 1520

	if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
		spin_unlock_irq(phba->host->host_lock);
		return;
	}

	ndlp->nlp_flag &= ~NLP_DELAY_TMO;
	spin_unlock_irq(phba->host->host_lock);
1521 1522 1523 1524 1525 1526
	/*
	 * 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
1527 1528 1529 1530 1531 1532 1533
	retry = ndlp->nlp_retry;

	switch (cmd) {
	case ELS_CMD_FLOGI:
		lpfc_issue_els_flogi(phba, ndlp, retry);
		break;
	case ELS_CMD_PLOGI:
1534
		if(!lpfc_issue_els_plogi(phba, ndlp->nlp_DID, retry)) {
1535
			ndlp->nlp_prev_state = ndlp->nlp_state;
1536
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_PLOGI_ISSUE);
1537
		}
已提交
1538 1539
		break;
	case ELS_CMD_ADISC:
1540
		if (!lpfc_issue_els_adisc(phba, ndlp, retry)) {
1541
			ndlp->nlp_prev_state = ndlp->nlp_state;
1542
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_ADISC_ISSUE);
1543
		}
已提交
1544 1545
		break;
	case ELS_CMD_PRLI:
1546
		if (!lpfc_issue_els_prli(phba, ndlp, retry)) {
1547
			ndlp->nlp_prev_state = ndlp->nlp_state;
1548
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_PRLI_ISSUE);
1549
		}
已提交
1550 1551
		break;
	case ELS_CMD_LOGO:
1552
		if (!lpfc_issue_els_logo(phba, ndlp, retry)) {
1553
			ndlp->nlp_prev_state = ndlp->nlp_state;
1554
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
1555
		}
已提交
1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572
		break;
	}
	return;
}

static int
lpfc_els_retry(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
	       struct lpfc_iocbq * rspiocb)
{
	IOCB_t *irsp;
	struct lpfc_dmabuf *pcmd;
	struct lpfc_nodelist *ndlp;
	uint32_t *elscmd;
	struct ls_rjt stat;
	int retry, maxretry;
	int delay;
	uint32_t cmd;
1573
	uint32_t did;
已提交
1574 1575 1576 1577 1578 1579 1580 1581

	retry = 0;
	delay = 0;
	maxretry = lpfc_max_els_tries;
	irsp = &rspiocb->iocb;
	ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	cmd = 0;
1582

已提交
1583 1584 1585 1586 1587 1588 1589 1590 1591
	/* Note: context2 may be 0 for internal driver abort
	 * of delays ELS command.
	 */

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

1592
	if (ndlp)
1593 1594 1595 1596
		did = ndlp->nlp_DID;
	else {
		/* We should only hit this case for retrying PLOGI */
		did = irsp->un.elsreq64.remoteID;
1597
		ndlp = lpfc_findnode_did(phba, did);
1598 1599 1600 1601
		if (!ndlp && (cmd != ELS_CMD_PLOGI))
			return 1;
	}

已提交
1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689
	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:
			if (cmd == ELS_CMD_PLOGI) {
				if (cmdiocb->retry == 0) {
					delay = 1;
				}
			}
			retry = 1;
			break;

		case IOERR_SEQUENCE_TIMEOUT:
			retry = 1;
			break;

		case IOERR_NO_RESOURCES:
			if (cmd == ELS_CMD_PLOGI) {
				delay = 1;
			}
			retry = 1;
			break;

		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:
		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) {
					delay = 1;
					maxretry = 48;
				}
				retry = 1;
				break;
			}
			if (cmd == ELS_CMD_PLOGI) {
				delay = 1;
				maxretry = lpfc_max_els_tries + 1;
				retry = 1;
				break;
			}
			break;

		case LSRJT_LOGICAL_BSY:
			if (cmd == ELS_CMD_PLOGI) {
				delay = 1;
				maxretry = 48;
			}
			retry = 1;
			break;
		}
		break;

	case IOSTAT_INTERMED_RSP:
	case IOSTAT_BA_RJT:
		break;

	default:
		break;
	}

1690
	if (did == FDMI_DID)
已提交
1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704
		retry = 1;

	if ((++cmdiocb->retry) >= maxretry) {
		phba->fc_stat.elsRetryExceeded++;
		retry = 0;
	}

	if (retry) {

		/* Retry ELS command <elsCmd> to remote NPORT <did> */
		lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
				"%d:0107 Retry ELS command x%x to remote "
				"NPORT x%x Data: x%x x%x\n",
				phba->brd_no,
1705
				cmd, did, cmdiocb->retry, delay);
已提交
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715

		if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) {
			/* If discovery / RSCN timer is running, reset it */
			if (timer_pending(&phba->fc_disctmo) ||
			      (phba->fc_flag & FC_RSCN_MODE)) {
				lpfc_set_disctmo(phba);
			}
		}

		phba->fc_stat.elsXmitRetry++;
1716
		if (ndlp && delay) {
已提交
1717 1718 1719 1720 1721 1722
			phba->fc_stat.elsDelayRetry++;
			ndlp->nlp_retry = cmdiocb->retry;

			mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
			ndlp->nlp_flag |= NLP_DELAY_TMO;

1723
			ndlp->nlp_prev_state = ndlp->nlp_state;
1724
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
已提交
1725 1726
			ndlp->nlp_last_elscmd = cmd;

1727
			return 1;
已提交
1728 1729 1730 1731
		}
		switch (cmd) {
		case ELS_CMD_FLOGI:
			lpfc_issue_els_flogi(phba, ndlp, cmdiocb->retry);
1732
			return 1;
已提交
1733
		case ELS_CMD_PLOGI:
1734 1735
			if (ndlp) {
				ndlp->nlp_prev_state = ndlp->nlp_state;
1736 1737
				lpfc_nlp_set_state(phba, ndlp,
						   NLP_STE_PLOGI_ISSUE);
1738 1739
			}
			lpfc_issue_els_plogi(phba, did, cmdiocb->retry);
1740
			return 1;
已提交
1741
		case ELS_CMD_ADISC:
1742
			ndlp->nlp_prev_state = ndlp->nlp_state;
1743
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_ADISC_ISSUE);
已提交
1744
			lpfc_issue_els_adisc(phba, ndlp, cmdiocb->retry);
1745
			return 1;
已提交
1746
		case ELS_CMD_PRLI:
1747
			ndlp->nlp_prev_state = ndlp->nlp_state;
1748
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_PRLI_ISSUE);
已提交
1749
			lpfc_issue_els_prli(phba, ndlp, cmdiocb->retry);
1750
			return 1;
已提交
1751
		case ELS_CMD_LOGO:
1752
			ndlp->nlp_prev_state = ndlp->nlp_state;
1753
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_NPR_NODE);
已提交
1754
			lpfc_issue_els_logo(phba, ndlp, cmdiocb->retry);
1755
			return 1;
已提交
1756 1757 1758 1759 1760 1761
		}
	}

	/* No retry ELS command <elsCmd> to remote NPORT <did> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0108 No retry ELS command x%x to remote NPORT x%x "
1762
			"Data: x%x\n",
已提交
1763
			phba->brd_no,
1764
			cmd, did, cmdiocb->retry);
已提交
1765

1766
	return 0;
已提交
1767 1768 1769
}

int
1770
lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
已提交
1771 1772 1773
{
	struct lpfc_dmabuf *buf_ptr, *buf_ptr1;

1774 1775 1776 1777
	if (elsiocb->context1) {
		lpfc_nlp_put(elsiocb->context1);
		elsiocb->context1 = NULL;
	}
已提交
1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798
	/* context2  = cmd,  context2->next = rsp, context3 = bpl */
	if (elsiocb->context2) {
		buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
		/* Free the response before processing the command.  */
		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);
	}

	if (elsiocb->context3) {
		buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
		lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
		kfree(buf_ptr);
	}
	spin_lock_irq(phba->host->host_lock);
1799
	lpfc_sli_release_iocbq(phba, elsiocb);
已提交
1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820
	spin_unlock_irq(phba->host->host_lock);
	return 0;
}

static void
lpfc_cmpl_els_logo_acc(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
		       struct lpfc_iocbq * rspiocb)
{
	struct lpfc_nodelist *ndlp;

	ndlp = (struct lpfc_nodelist *) cmdiocb->context1;

	/* ACC to LOGO completes to NPort <nlp_DID> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0109 ACC to LOGO completes to NPort x%x "
			"Data: x%x x%x x%x\n",
			phba->brd_no, ndlp->nlp_DID, ndlp->nlp_flag,
			ndlp->nlp_state, ndlp->nlp_rpi);

	switch (ndlp->nlp_state) {
	case NLP_STE_UNUSED_NODE:	/* node is just allocated */
1821
		lpfc_drop_node(phba, ndlp);
已提交
1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833
		break;
	case NLP_STE_NPR_NODE:		/* NPort Recovery mode */
		lpfc_unreg_rpi(phba, ndlp);
		break;
	default:
		break;
	}
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

static void
1834 1835
lpfc_cmpl_els_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_iocbq *rspiocb)
已提交
1836
{
J
James Smart 已提交
1837
	IOCB_t *irsp;
已提交
1838 1839
	struct lpfc_nodelist *ndlp;
	LPFC_MBOXQ_t *mbox = NULL;
1840
	struct lpfc_dmabuf *mp;
已提交
1841

J
James Smart 已提交
1842 1843
	irsp = &rspiocb->iocb;

已提交
1844 1845 1846 1847 1848 1849
	ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	if (cmdiocb->context_un.mbox)
		mbox = cmdiocb->context_un.mbox;


	/* Check to see if link went down during discovery */
1850
	if (lpfc_els_chk_latt(phba) || !ndlp) {
已提交
1851
		if (mbox) {
1852 1853 1854 1855 1856
			mp = (struct lpfc_dmabuf *) mbox->context1;
			if (mp) {
				lpfc_mbuf_free(phba, mp->virt, mp->phys);
				kfree(mp);
			}
1857
			mempool_free(mbox, phba->mbox_mem_pool);
已提交
1858 1859 1860 1861 1862 1863 1864
		}
		goto out;
	}

	/* ELS response tag <ulpIoTag> completes */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0110 ELS response tag x%x completes "
1865
			"Data: x%x x%x x%x x%x x%x x%x x%x\n",
已提交
1866 1867
			phba->brd_no,
			cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
1868 1869 1870
			rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
 			ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			ndlp->nlp_rpi);
已提交
1871 1872 1873 1874 1875 1876

	if (mbox) {
		if ((rspiocb->iocb.ulpStatus == 0)
		    && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
			lpfc_unreg_rpi(phba, ndlp);
			mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
1877
			mbox->context2 = lpfc_nlp_get(ndlp);
1878
			ndlp->nlp_prev_state = ndlp->nlp_state;
1879
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_REG_LOGIN_ISSUE);
已提交
1880 1881 1882 1883 1884
			if (lpfc_sli_issue_mbox(phba, mbox,
						(MBX_NOWAIT | MBX_STOP_IOCB))
			    != MBX_NOT_FINISHED) {
				goto out;
			}
1885
			lpfc_nlp_put(ndlp);
已提交
1886 1887 1888
			/* NOTE: we should have messages for unsuccessful
			   reglogin */
		} else {
J
James Smart 已提交
1889 1890 1891 1892 1893 1894
			/* Do not call NO_LIST for lpfc_els_abort'ed ELS cmds */
			if (!((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
			      ((irsp->un.ulpWord[4] == IOERR_SLI_ABORTED) ||
			       (irsp->un.ulpWord[4] == IOERR_LINK_DOWN) ||
			       (irsp->un.ulpWord[4] == IOERR_SLI_DOWN)))) {
				if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
1895
					lpfc_drop_node(phba, ndlp);
J
James Smart 已提交
1896 1897
					ndlp = NULL;
				}
已提交
1898 1899
			}
		}
1900 1901 1902 1903 1904 1905
		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
1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929
	}
out:
	if (ndlp) {
		spin_lock_irq(phba->host->host_lock);
		ndlp->nlp_flag &= ~NLP_ACC_REGLOGIN;
		spin_unlock_irq(phba->host->host_lock);
	}
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

int
lpfc_els_rsp_acc(struct lpfc_hba * phba, uint32_t flag,
		 struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp,
		 LPFC_MBOXQ_t * mbox, uint8_t newnode)
{
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;
1930
	ELS_PKT *els_pkt_ptr;
已提交
1931 1932 1933 1934 1935 1936 1937 1938

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */
	oldcmd = &oldiocb->iocb;

	switch (flag) {
	case ELS_CMD_ACC:
		cmdsize = sizeof (uint32_t);
1939 1940 1941
		elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
					ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
		if (!elsiocb) {
1942
			ndlp->nlp_flag &= ~NLP_LOGO_ACC;
1943
			return 1;
已提交
1944 1945 1946 1947 1948 1949 1950 1951 1952
		}
		icmd = &elsiocb->iocb;
		icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
		pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
		*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
		pcmd += sizeof (uint32_t);
		break;
	case ELS_CMD_PLOGI:
		cmdsize = (sizeof (struct serv_parm) + sizeof (uint32_t));
1953 1954 1955
		elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
					ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
		if (!elsiocb)
1956
			return 1;
1957

已提交
1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968
		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;
		pcmd += sizeof (uint32_t);
		memcpy(pcmd, &phba->fc_sparam, sizeof (struct serv_parm));
		break;
1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985
	case ELS_CMD_PRLO:
		cmdsize = sizeof (uint32_t) + sizeof (PRLO);
		elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
					     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,
		       sizeof (uint32_t) + sizeof (PRLO));
		*((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
		els_pkt_ptr = (ELS_PKT *) pcmd;
		els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
		break;
已提交
1986
	default:
1987
		return 1;
已提交
1988 1989
	}

1990 1991
	if (newnode) {
		lpfc_nlp_put(ndlp);
已提交
1992
		elsiocb->context1 = NULL;
1993
	}
已提交
1994 1995 1996

	/* Xmit ELS ACC response tag <ulpIoTag> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1997 1998 1999
			"%d: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",
			phba->brd_no, elsiocb->iotag,
已提交
2000 2001 2002 2003
			elsiocb->iocb.ulpContext, ndlp->nlp_DID,
			ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);

	if (ndlp->nlp_flag & NLP_LOGO_ACC) {
2004 2005 2006
		spin_lock_irq(phba->host->host_lock);
		ndlp->nlp_flag &= ~NLP_LOGO_ACC;
		spin_unlock_irq(phba->host->host_lock);
已提交
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
		elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
	} else {
		elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
	}

	phba->fc_stat.elsXmitACC++;
	spin_lock_irq(phba->host->host_lock);
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	spin_unlock_irq(phba->host->host_lock);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
2018
		return 1;
已提交
2019
	}
2020
	return 0;
已提交
2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039
}

int
lpfc_els_rsp_reject(struct lpfc_hba * phba, uint32_t rejectError,
		    struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
{
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */

	cmdsize = 2 * sizeof (uint32_t);
2040 2041 2042
	elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
					ndlp, ndlp->nlp_DID, ELS_CMD_LS_RJT);
	if (!elsiocb)
2043
		return 1;
已提交
2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055

	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;
	pcmd += sizeof (uint32_t);
	*((uint32_t *) (pcmd)) = rejectError;

	/* Xmit ELS RJT <err> response tag <ulpIoTag> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2056 2057 2058
			"%d: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",
			phba->brd_no, rejectError, elsiocb->iotag,
已提交
2059 2060 2061 2062 2063 2064 2065 2066 2067 2068
			elsiocb->iocb.ulpContext, ndlp->nlp_DID,
			ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);

	phba->fc_stat.elsXmitLSRJT++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
	spin_lock_irq(phba->host->host_lock);
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	spin_unlock_irq(phba->host->host_lock);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
2069
		return 1;
已提交
2070
	}
2071
	return 0;
已提交
2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091
}

int
lpfc_els_rsp_adisc_acc(struct lpfc_hba * phba,
		       struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
{
	ADISC *ap;
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */

	cmdsize = sizeof (uint32_t) + sizeof (ADISC);
2092 2093 2094
	elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
					ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
	if (!elsiocb)
2095
		return 1;
已提交
2096

2097 2098 2099 2100
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

已提交
2101 2102
	/* Xmit ADISC ACC response tag <ulpIoTag> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2103 2104 2105
			"%d: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",
			phba->brd_no, elsiocb->iotag,
已提交
2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126
			elsiocb->iocb.ulpContext, ndlp->nlp_DID,
			ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);

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

	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
	pcmd += sizeof (uint32_t);

	ap = (ADISC *) (pcmd);
	ap->hardAL_PA = phba->fc_pref_ALPA;
	memcpy(&ap->portName, &phba->fc_portname, sizeof (struct lpfc_name));
	memcpy(&ap->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
	ap->DID = be32_to_cpu(phba->fc_myDID);

	phba->fc_stat.elsXmitACC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
	spin_lock_irq(phba->host->host_lock);
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	spin_unlock_irq(phba->host->host_lock);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
2127
		return 1;
已提交
2128
	}
2129
	return 0;
已提交
2130 2131 2132
}

int
2133 2134
lpfc_els_rsp_prli_acc(struct lpfc_hba *phba, struct lpfc_iocbq *oldiocb,
		      struct lpfc_nodelist *ndlp)
已提交
2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150
{
	PRLI *npr;
	lpfc_vpd_t *vpd;
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */

	cmdsize = sizeof (uint32_t) + sizeof (PRLI);
2151
	elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry, ndlp,
2152
		ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
2153 2154
	if (!elsiocb)
		return 1;
已提交
2155

2156 2157 2158 2159
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

已提交
2160 2161
	/* Xmit PRLI ACC response tag <ulpIoTag> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2162 2163 2164
			"%d: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",
			phba->brd_no, elsiocb->iotag,
已提交
2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203
			elsiocb->iocb.ulpContext, ndlp->nlp_DID,
			ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);

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

	*((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
	pcmd += sizeof (uint32_t);

	/* For PRLI, remainder of payload is PRLI parameter page */
	memset(pcmd, 0, sizeof (PRLI));

	npr = (PRLI *) pcmd;
	vpd = &phba->vpd;
	/*
	 * If our firmware version is 3.20 or later,
	 * set the following bits for FC-TAPE support.
	 */
	if (vpd->rev.feaLevelHigh >= 0x02) {
		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;

	phba->fc_stat.elsXmitACC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;

	spin_lock_irq(phba->host->host_lock);
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	spin_unlock_irq(phba->host->host_lock);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
2204
		return 1;
已提交
2205
	}
2206
	return 0;
已提交
2207 2208 2209
}

static int
2210 2211
lpfc_els_rsp_rnid_acc(struct lpfc_hba *phba, uint8_t format,
		      struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
已提交
2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230
{
	RNID *rn;
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

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

	cmdsize = sizeof (uint32_t) + sizeof (uint32_t)
		+ (2 * sizeof (struct lpfc_name));
	if (format)
		cmdsize += sizeof (RNID_TOP_DISC);

2231 2232 2233
	elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
					ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
	if (!elsiocb)
2234
		return 1;
已提交
2235

2236 2237 2238 2239
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

已提交
2240 2241 2242
	/* Xmit RNID ACC response tag <ulpIoTag> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0132 Xmit RNID ACC response tag x%x "
2243 2244
			"xri x%x\n",
			phba->brd_no, elsiocb->iotag,
已提交
2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277
			elsiocb->iocb.ulpContext);

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

	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
	pcmd += sizeof (uint32_t);

	memset(pcmd, 0, sizeof (RNID));
	rn = (RNID *) (pcmd);
	rn->Format = format;
	rn->CommonLen = (2 * sizeof (struct lpfc_name));
	memcpy(&rn->portName, &phba->fc_portname, sizeof (struct lpfc_name));
	memcpy(&rn->nodeName, &phba->fc_nodename, sizeof (struct lpfc_name));
	switch (format) {
	case 0:
		rn->SpecificLen = 0;
		break;
	case RNID_TOPOLOGY_DISC:
		rn->SpecificLen = sizeof (RNID_TOP_DISC);
		memcpy(&rn->un.topologyDisc.portName,
		       &phba->fc_portname, sizeof (struct lpfc_name));
		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;
	}

	phba->fc_stat.elsXmitACC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
2278
	lpfc_nlp_put(ndlp);
已提交
2279 2280 2281 2282 2283 2284 2285 2286
	elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
				    * it could be freed */

	spin_lock_irq(phba->host->host_lock);
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	spin_unlock_irq(phba->host->host_lock);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
2287
		return 1;
已提交
2288
	}
2289
	return 0;
已提交
2290 2291 2292
}

int
2293
lpfc_els_disc_adisc(struct lpfc_hba *phba)
已提交
2294 2295 2296 2297 2298
{
	int sentadisc;
	struct lpfc_nodelist *ndlp, *next_ndlp;

	sentadisc = 0;
2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317
	/* go thru NPR nodes and issue any remaining ELS ADISCs */
	list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_nodes, nlp_listp) {
		if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
		    (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
		    (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
			spin_lock_irq(phba->host->host_lock);
			ndlp->nlp_flag &= ~NLP_NPR_ADISC;
			spin_unlock_irq(phba->host->host_lock);
			ndlp->nlp_prev_state = ndlp->nlp_state;
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(phba, ndlp, 0);
			sentadisc++;
			phba->num_disc_nodes++;
			if (phba->num_disc_nodes >=
			    phba->cfg_discovery_threads) {
				spin_lock_irq(phba->host->host_lock);
				phba->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(phba->host->host_lock);
				break;
已提交
2318 2319 2320 2321 2322 2323 2324 2325
			}
		}
	}
	if (sentadisc == 0) {
		spin_lock_irq(phba->host->host_lock);
		phba->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(phba->host->host_lock);
	}
2326
	return sentadisc;
已提交
2327 2328 2329 2330 2331 2332 2333 2334 2335 2336
}

int
lpfc_els_disc_plogi(struct lpfc_hba * phba)
{
	int sentplogi;
	struct lpfc_nodelist *ndlp, *next_ndlp;

	sentplogi = 0;
	/* go thru NPR list and issue any remaining ELS PLOGIs */
2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352
	list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_nodes, nlp_listp) {
		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;
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_PLOGI_ISSUE);
			lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
			sentplogi++;
			phba->num_disc_nodes++;
			if (phba->num_disc_nodes >=
			    phba->cfg_discovery_threads) {
				spin_lock_irq(phba->host->host_lock);
				phba->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(phba->host->host_lock);
				break;
已提交
2353 2354 2355 2356 2357 2358 2359 2360
			}
		}
	}
	if (sentplogi == 0) {
		spin_lock_irq(phba->host->host_lock);
		phba->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(phba->host->host_lock);
	}
2361
	return sentplogi;
已提交
2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380
}

int
lpfc_els_flush_rscn(struct lpfc_hba * phba)
{
	struct lpfc_dmabuf *mp;
	int i;

	for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
		mp = phba->fc_rscn_id_list[i];
		lpfc_mbuf_free(phba, mp->virt, mp->phys);
		kfree(mp);
		phba->fc_rscn_id_list[i] = NULL;
	}
	phba->fc_rscn_id_cnt = 0;
	spin_lock_irq(phba->host->host_lock);
	phba->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
	spin_unlock_irq(phba->host->host_lock);
	lpfc_can_disctmo(phba);
2381
	return 0;
已提交
2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401
}

int
lpfc_rscn_payload_check(struct lpfc_hba * phba, uint32_t did)
{
	D_ID ns_did;
	D_ID rscn_did;
	struct lpfc_dmabuf *mp;
	uint32_t *lp;
	uint32_t payload_len, cmd, i, match;

	ns_did.un.word = did;
	match = 0;

	/* Never match fabric nodes for RSCNs */
	if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
		return(0);

	/* If we are doing a FULL RSCN rediscovery, match everything */
	if (phba->fc_flag & FC_RSCN_DISCOVERY) {
2402
		return did;
已提交
2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449
	}

	for (i = 0; i < phba->fc_rscn_id_cnt; i++) {
		mp = phba->fc_rscn_id_list[i];
		lp = (uint32_t *) mp->virt;
		cmd = *lp++;
		payload_len = be32_to_cpu(cmd) & 0xffff; /* payload length */
		payload_len -= sizeof (uint32_t);	/* take off word 0 */
		while (payload_len) {
			rscn_did.un.word = *lp++;
			rscn_did.un.word = be32_to_cpu(rscn_did.un.word);
			payload_len -= sizeof (uint32_t);
			switch (rscn_did.un.b.resv) {
			case 0:	/* Single N_Port ID effected */
				if (ns_did.un.word == rscn_did.un.word) {
					match = did;
				}
				break;
			case 1:	/* Whole N_Port Area effected */
				if ((ns_did.un.b.domain == rscn_did.un.b.domain)
				    && (ns_did.un.b.area == rscn_did.un.b.area))
					{
						match = did;
					}
				break;
			case 2:	/* Whole N_Port Domain effected */
				if (ns_did.un.b.domain == rscn_did.un.b.domain)
					{
						match = did;
					}
				break;
			case 3:	/* Whole Fabric effected */
				match = did;
				break;
			default:
				/* Unknown Identifier in RSCN list */
				lpfc_printf_log(phba, KERN_ERR, LOG_DISCOVERY,
						"%d:0217 Unknown Identifier in "
						"RSCN payload Data: x%x\n",
						phba->brd_no, rscn_did.un.word);
				break;
			}
			if (match) {
				break;
			}
		}
	}
2450
	return match;
已提交
2451 2452 2453
}

static int
2454
lpfc_rscn_recovery_check(struct lpfc_hba *phba)
已提交
2455
{
2456
	struct lpfc_nodelist *ndlp = NULL;
已提交
2457 2458

	/* Look at all nodes effected by pending RSCNs and move
2459
	 * them to NPR state.
已提交
2460 2461
	 */

2462 2463 2464 2465
	list_for_each_entry(ndlp, &phba->fc_nodes, nlp_listp) {
		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE ||
		    lpfc_rscn_payload_check(phba, ndlp->nlp_DID) == 0)
			continue;
已提交
2466

2467
		lpfc_disc_state_machine(phba, ndlp, NULL,
已提交
2468
					NLP_EVT_DEVICE_RECOVERY);
2469

2470 2471 2472 2473 2474 2475
		/*
		 * Make sure NLP_DELAY_TMO is NOT running after a device
		 * recovery event.
		 */
		if (ndlp->nlp_flag & NLP_DELAY_TMO)
			lpfc_cancel_retry_delay_tmo(phba, ndlp);
已提交
2476
	}
2477

2478
	return 0;
已提交
2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489
}

static int
lpfc_els_rcv_rscn(struct lpfc_hba * phba,
		  struct lpfc_iocbq * cmdiocb,
		  struct lpfc_nodelist * ndlp, uint8_t newnode)
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	IOCB_t *icmd;
	uint32_t payload_len, cmd;
2490
	int i;
已提交
2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508

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

	cmd = *lp++;
	payload_len = be32_to_cpu(cmd) & 0xffff;	/* payload length */
	payload_len -= sizeof (uint32_t);	/* take off word 0 */
	cmd &= ELS_CMD_MASK;

	/* RSCN received */
	lpfc_printf_log(phba,
			KERN_INFO,
			LOG_DISCOVERY,
			"%d:0214 RSCN received Data: x%x x%x x%x x%x\n",
			phba->brd_no,
			phba->fc_flag, payload_len, *lp, phba->fc_rscn_id_cnt);

2509 2510 2511 2512
	for (i = 0; i < payload_len/sizeof(uint32_t); i++)
		fc_host_post_event(phba->host, fc_get_event_number(),
			FCH_EVT_RSCN, lp[i]);

已提交
2513 2514 2515
	/* If we are about to begin discovery, just ACC the RSCN.
	 * Discovery processing will satisfy it.
	 */
2516
	if (phba->hba_state <= LPFC_NS_QRY) {
已提交
2517 2518
		lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
								newnode);
2519
		return 0;
已提交
2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560
	}

	/* If we are already processing an RSCN, save the received
	 * RSCN payload buffer, cmdiocb->context2 to process later.
	 */
	if (phba->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
		if ((phba->fc_rscn_id_cnt < FC_MAX_HOLD_RSCN) &&
		    !(phba->fc_flag & FC_RSCN_DISCOVERY)) {
			spin_lock_irq(phba->host->host_lock);
			phba->fc_flag |= FC_RSCN_MODE;
			spin_unlock_irq(phba->host->host_lock);
			phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;

			/* If we zero, cmdiocb->context2, the calling
			 * routine will not try to free it.
			 */
			cmdiocb->context2 = NULL;

			/* Deferred RSCN */
			lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
					"%d:0235 Deferred RSCN "
					"Data: x%x x%x x%x\n",
					phba->brd_no, phba->fc_rscn_id_cnt,
					phba->fc_flag, phba->hba_state);
		} else {
			spin_lock_irq(phba->host->host_lock);
			phba->fc_flag |= FC_RSCN_DISCOVERY;
			spin_unlock_irq(phba->host->host_lock);
			/* ReDiscovery RSCN */
			lpfc_printf_log(phba, KERN_INFO, LOG_DISCOVERY,
					"%d:0234 ReDiscovery RSCN "
					"Data: x%x x%x x%x\n",
					phba->brd_no, phba->fc_rscn_id_cnt,
					phba->fc_flag, phba->hba_state);
		}
		/* Send back ACC */
		lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL,
								newnode);

		/* send RECOVERY event for ALL nodes that match RSCN payload */
		lpfc_rscn_recovery_check(phba);
2561
		return 0;
已提交
2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579
	}

	phba->fc_flag |= FC_RSCN_MODE;
	phba->fc_rscn_id_list[phba->fc_rscn_id_cnt++] = pcmd;
	/*
	 * If we zero, cmdiocb->context2, the calling routine will
	 * not try to free it.
	 */
	cmdiocb->context2 = NULL;

	lpfc_set_disctmo(phba);

	/* Send back ACC */
	lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, newnode);

	/* send RECOVERY event for ALL nodes that match RSCN payload */
	lpfc_rscn_recovery_check(phba);

2580
	return lpfc_els_handle_rscn(phba);
已提交
2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601
}

int
lpfc_els_handle_rscn(struct lpfc_hba * phba)
{
	struct lpfc_nodelist *ndlp;

	/* Start timer for RSCN processing */
	lpfc_set_disctmo(phba);

	/* RSCN processed */
	lpfc_printf_log(phba,
			KERN_INFO,
			LOG_DISCOVERY,
			"%d:0215 RSCN processed Data: x%x x%x x%x x%x\n",
			phba->brd_no,
			phba->fc_flag, 0, phba->fc_rscn_id_cnt,
			phba->hba_state);

	/* To process RSCN, first compare RSCN data with NameServer */
	phba->fc_ns_retry = 0;
2602 2603
	ndlp = lpfc_findnode_did(phba, NameServer_DID);
	if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
已提交
2604 2605 2606 2607
		/* Good ndlp, issue CT Request to NameServer */
		if (lpfc_ns_cmd(phba, ndlp, SLI_CTNS_GID_FT) == 0) {
			/* Wait for NameServer query cmpl before we can
			   continue */
2608
			return 1;
已提交
2609 2610 2611 2612
		}
	} else {
		/* If login to NameServer does not exist, issue one */
		/* Good status, issue PLOGI to NameServer */
2613
		ndlp = lpfc_findnode_did(phba, NameServer_DID);
2614
		if (ndlp) {
已提交
2615 2616
			/* Wait for NameServer login cmpl before we can
			   continue */
2617
			return 1;
已提交
2618
		}
2619 2620
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp) {
已提交
2621
			lpfc_els_flush_rscn(phba);
2622
			return 0;
已提交
2623 2624 2625
		} else {
			lpfc_nlp_init(phba, ndlp, NameServer_DID);
			ndlp->nlp_type |= NLP_FABRIC;
2626
			ndlp->nlp_prev_state = ndlp->nlp_state;
2627
			lpfc_nlp_set_state(phba, ndlp, NLP_STE_PLOGI_ISSUE);
2628
			lpfc_issue_els_plogi(phba, NameServer_DID, 0);
已提交
2629 2630
			/* Wait for NameServer login cmpl before we can
			   continue */
2631
			return 1;
已提交
2632 2633 2634 2635
		}
	}

	lpfc_els_flush_rscn(phba);
2636
	return 0;
已提交
2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669
}

static int
lpfc_els_rcv_flogi(struct lpfc_hba * phba,
		   struct lpfc_iocbq * cmdiocb,
		   struct lpfc_nodelist * ndlp, uint8_t newnode)
{
	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 */

	lpfc_set_disctmo(phba);

	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 */
		lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
				"%d:0113 An FLOGI ELS command x%x was received "
				"from DID x%x in Loop Mode\n",
				phba->brd_no, cmd, did);
2670
		return 1;
已提交
2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685
	}

	did = Fabric_DID;

	if ((lpfc_check_sparm(phba, ndlp, sp, CLASS3))) {
		/* For a FLOGI we accept, then if our portname is greater
		 * then the remote portname we initiate Nport login.
		 */

		rc = memcmp(&phba->fc_portname, &sp->portName,
			    sizeof (struct lpfc_name));

		if (!rc) {
			if ((mbox = mempool_alloc(phba->mbox_mem_pool,
						  GFP_KERNEL)) == 0) {
2686
				return 1;
已提交
2687 2688 2689 2690 2691 2692 2693 2694 2695
			}
			lpfc_linkdown(phba);
			lpfc_init_link(phba, mbox,
				       phba->cfg_topology,
				       phba->cfg_link_speed);
			mbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
			mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
			rc = lpfc_sli_issue_mbox
				(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB));
2696
			lpfc_set_loopback_flag(phba);
已提交
2697
			if (rc == MBX_NOT_FINISHED) {
2698
				mempool_free(mbox, phba->mbox_mem_pool);
已提交
2699
			}
2700
			return 1;
2701
		} else if (rc > 0) {	/* greater than */
已提交
2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714
			spin_lock_irq(phba->host->host_lock);
			phba->fc_flag |= FC_PT2PT_PLOGI;
			spin_unlock_irq(phba->host->host_lock);
		}
		phba->fc_flag |= FC_PT2PT;
		phba->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
	} 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;
		lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
2715
		return 1;
已提交
2716 2717 2718 2719 2720
	}

	/* Send back ACC */
	lpfc_els_rsp_acc(phba, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL, newnode);

2721
	return 0;
已提交
2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758
}

static int
lpfc_els_rcv_rnid(struct lpfc_hba * phba,
		  struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
{
	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 */
		lpfc_els_rsp_rnid_acc(phba, rn->Format, cmdiocb, ndlp);
		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;
		lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
	}
2759
	return 0;
已提交
2760 2761 2762
}

static int
2763 2764
lpfc_els_rcv_lirr(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776
{
	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;
	lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
	return 0;
}

2777
static void
2778
lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796
{
	struct lpfc_sli *psli;
	struct lpfc_sli_ring *pring;
	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;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];
	mb = &pmb->mb;

	ndlp = (struct lpfc_nodelist *) pmb->context2;
	xri = (uint16_t) ((unsigned long)(pmb->context1));
R
Randy Dunlap 已提交
2797 2798
	pmb->context1 = NULL;
	pmb->context2 = NULL;
2799 2800

	if (mb->mbxStatus) {
2801
		mempool_free(pmb, phba->mbox_mem_pool);
2802 2803 2804 2805
		return;
	}

	cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
2806
	mempool_free(pmb, phba->mbox_mem_pool);
2807 2808
	elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, lpfc_max_els_tries, ndlp,
						ndlp->nlp_DID, ELS_CMD_ACC);
2809
	lpfc_nlp_put(ndlp);
2810
	if (!elsiocb)
2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838
		return;

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

	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
	pcmd += sizeof (uint32_t); /* Skip past command */
	rps_rsp = (RPS_RSP *)pcmd;

	if (phba->fc_topology != TOPOLOGY_LOOP)
		status = 0x10;
	else
		status = 0x8;
	if (phba->fc_flag & FC_FABRIC)
		status |= 0x4;

	rps_rsp->rsvd1 = 0;
	rps_rsp->portStatus = be16_to_cpu(status);
	rps_rsp->linkFailureCnt = be32_to_cpu(mb->un.varRdLnk.linkFailureCnt);
	rps_rsp->lossSyncCnt = be32_to_cpu(mb->un.varRdLnk.lossSyncCnt);
	rps_rsp->lossSignalCnt = be32_to_cpu(mb->un.varRdLnk.lossSignalCnt);
	rps_rsp->primSeqErrCnt = be32_to_cpu(mb->un.varRdLnk.primSeqErrCnt);
	rps_rsp->invalidXmitWord = be32_to_cpu(mb->un.varRdLnk.invalidXmitWord);
	rps_rsp->crcCnt = be32_to_cpu(mb->un.varRdLnk.crcCnt);

	/* Xmit ELS RPS ACC response tag <ulpIoTag> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2839 2840 2841
			"%d: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",
			phba->brd_no, elsiocb->iotag,
2842 2843 2844 2845 2846
			elsiocb->iocb.ulpContext, ndlp->nlp_DID,
			ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);

	elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;
	phba->fc_stat.elsXmitACC++;
2847

2848 2849 2850 2851 2852 2853 2854 2855
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
	}
	return;
}

static int
lpfc_els_rcv_rps(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
已提交
2856 2857 2858
		 struct lpfc_nodelist * ndlp)
{
	uint32_t *lp;
2859 2860 2861 2862 2863 2864
	uint8_t flag;
	LPFC_MBOXQ_t *mbox;
	struct lpfc_dmabuf *pcmd;
	RPS *rps;
	struct ls_rjt stat;

2865 2866
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886
		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;
		lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
	}

	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)) ||
	    ((flag == 2) && (memcmp(&rps->un.portName, &phba->fc_portname,
			   sizeof (struct lpfc_name)) == 0))) {
		if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC))) {
			lpfc_read_lnk_stat(phba, mbox);
			mbox->context1 =
			    (void *)((unsigned long)cmdiocb->iocb.ulpContext);
2887
			mbox->context2 = lpfc_nlp_get(ndlp);
2888 2889 2890 2891 2892 2893
			mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
			if (lpfc_sli_issue_mbox (phba, mbox,
			    (MBX_NOWAIT | MBX_STOP_IOCB)) != MBX_NOT_FINISHED) {
				/* Mbox completion will send ELS Response */
				return 0;
			}
2894
			lpfc_nlp_put(ndlp);
2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905
			mempool_free(mbox, phba->mbox_mem_pool);
		}
	}
	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;
	lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
	return 0;
}

2906
static int
2907 2908 2909
lpfc_els_rsp_rpl_acc(struct lpfc_hba * phba, uint16_t cmdsize,
		 struct lpfc_iocbq * oldiocb, struct lpfc_nodelist * ndlp)
{
已提交
2910
	IOCB_t *icmd;
2911 2912 2913
	IOCB_t *oldcmd;
	RPL_RSP rpl_rsp;
	struct lpfc_iocbq *elsiocb;
已提交
2914 2915
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
2916
	uint8_t *pcmd;
已提交
2917 2918

	psli = &phba->sli;
2919 2920
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */

2921 2922 2923
	elsiocb = lpfc_prep_els_iocb(phba, 0, cmdsize, oldiocb->retry,
					ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
	if (!elsiocb)
2924
		return 1;
2925

2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

	pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
	pcmd += sizeof (uint16_t);
	*((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;
	rpl_rsp.port_num_blk.portID = be32_to_cpu(phba->fc_myDID);
	memcpy(&rpl_rsp.port_num_blk.portName, &phba->fc_portname,
	    sizeof(struct lpfc_name));

	memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));


	/* Xmit ELS RPL ACC response tag <ulpIoTag> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
2949 2950 2951
			"%d: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",
			phba->brd_no, elsiocb->iotag,
2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975
			elsiocb->iocb.ulpContext, ndlp->nlp_DID,
			ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);

	elsiocb->iocb_cmpl = lpfc_cmpl_els_acc;

	phba->fc_stat.elsXmitACC++;
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
		return 1;
	}
	return 0;
}

static int
lpfc_els_rcv_rpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
		 struct lpfc_nodelist * ndlp)
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	uint32_t maxsize;
	uint16_t cmdsize;
	RPL *rpl;
	struct ls_rjt stat;

2976 2977
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
2978 2979 2980 2981 2982 2983 2984
		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;
		lpfc_els_rsp_reject(phba, stat.un.lsRjtError, cmdiocb, ndlp);
	}

已提交
2985 2986
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;
2987
	rpl = (RPL *) (lp + 1);
已提交
2988

2989
	maxsize = be32_to_cpu(rpl->maxsize);
已提交
2990

2991 2992 2993 2994 2995
	/* 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);
2996
	} else {
2997 2998 2999
		cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
	}
	lpfc_els_rsp_rpl_acc(phba, cmdsize, cmdiocb, ndlp);
已提交
3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024

	return 0;
}

static int
lpfc_els_rcv_farp(struct lpfc_hba * phba,
		  struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
{
	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> */
	lpfc_printf_log(phba,
			 KERN_INFO,
3025
			 LOG_ELS,
已提交
3026 3027 3028 3029 3030
			 "%d:0601 FARP-REQ received from DID x%x\n",
			 phba->brd_no, did);

	/* We will only support match on WWPN or WWNN */
	if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
3031
		return 0;
已提交
3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053
	}

	cnt = 0;
	/* If this FARP command is searching for my portname */
	if (fp->Mflags & FARP_MATCH_PORT) {
		if (memcmp(&fp->RportName, &phba->fc_portname,
			   sizeof (struct lpfc_name)) == 0)
			cnt = 1;
	}

	/* If this FARP command is searching for my nodename */
	if (fp->Mflags & FARP_MATCH_NODE) {
		if (memcmp(&fp->RnodeName, &phba->fc_nodename,
			   sizeof (struct lpfc_name)) == 0)
			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) {
3054
				ndlp->nlp_prev_state = ndlp->nlp_state;
3055 3056
				lpfc_nlp_set_state(phba, ndlp,
						   NLP_STE_PLOGI_ISSUE);
3057
				lpfc_issue_els_plogi(phba, ndlp->nlp_DID, 0);
已提交
3058 3059 3060 3061 3062 3063 3064 3065
			}

			/* Send a FARP response to that node */
			if (fp->Rflags & FARP_REQUEST_FARPR) {
				lpfc_issue_els_farpr(phba, did, 0);
			}
		}
	}
3066
	return 0;
已提交
3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086
}

static int
lpfc_els_rcv_farpr(struct lpfc_hba * phba,
		   struct lpfc_iocbq * cmdiocb, struct lpfc_nodelist * ndlp)
{
	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> */
	lpfc_printf_log(phba,
			 KERN_INFO,
3087
			 LOG_ELS,
已提交
3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098
			 "%d:0600 FARP-RSP received from DID x%x\n",
			 phba->brd_no, did);

	/* ACCEPT the Farp resp request */
	lpfc_els_rsp_acc(phba, ELS_CMD_ACC, cmdiocb, ndlp, NULL, 0);

	return 0;
}

static int
lpfc_els_rcv_fan(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
3099
		 struct lpfc_nodelist * fan_ndlp)
已提交
3100 3101 3102 3103 3104
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	IOCB_t *icmd;
	uint32_t cmd, did;
3105 3106 3107 3108
	FAN *fp;
	struct lpfc_nodelist *ndlp, *next_ndlp;

	/* FAN received */
3109
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS, "%d:0265 FAN received\n",
3110
								phba->brd_no);
已提交
3111 3112 3113

	icmd = &cmdiocb->iocb;
	did = icmd->un.elsreq64.remoteID;
3114 3115
	pcmd = (struct lpfc_dmabuf *)cmdiocb->context2;
	lp = (uint32_t *)pcmd->virt;
已提交
3116 3117

	cmd = *lp++;
3118
	fp = (FAN *)lp;
已提交
3119

3120
	/* FAN received; Fan does not have a reply sequence */
已提交
3121 3122

	if (phba->hba_state == LPFC_LOCAL_CFG_LINK) {
3123 3124 3125 3126 3127 3128 3129
		if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
			sizeof(struct lpfc_name)) != 0) ||
		    (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
			sizeof(struct lpfc_name)) != 0)) {
			/*
			 * This node has switched fabrics.  FLOGI is required
			 * Clean up the old rpi's
已提交
3130
			 */
3131 3132

			list_for_each_entry_safe(ndlp, next_ndlp,
3133 3134 3135
						 &phba->fc_nodes, nlp_listp) {
				if (ndlp->nlp_state != NLP_STE_NPR_NODE)
					continue;
3136 3137 3138 3139 3140
				if (ndlp->nlp_type & NLP_FABRIC) {
					/*
					 * Clean up old Fabric, Nameserver and
					 * other NLP_FABRIC logins
					 */
3141
					lpfc_drop_node(phba, ndlp);
3142
				} else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) {
3143 3144 3145 3146 3147 3148 3149 3150 3151 3152
					/* Fail outstanding I/O now since this
					 * device is marked for PLOGI
					 */
					lpfc_unreg_rpi(phba, ndlp);
				}
			}

			phba->hba_state = LPFC_FLOGI;
			lpfc_set_disctmo(phba);
			lpfc_initial_flogi(phba);
3153
			return 0;
已提交
3154
		}
3155 3156 3157
		/* Discovery not needed,
		 * move the nodes to their original state.
		 */
3158 3159 3160 3161
		list_for_each_entry_safe(ndlp, next_ndlp, &phba->fc_nodes,
					 nlp_listp) {
			if (ndlp->nlp_state != NLP_STE_NPR_NODE)
				continue;
已提交
3162

3163 3164 3165
			switch (ndlp->nlp_prev_state) {
			case NLP_STE_UNMAPPED_NODE:
				ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
3166 3167
				lpfc_nlp_set_state(phba, ndlp,
						   NLP_STE_UNMAPPED_NODE);
3168 3169 3170 3171
				break;

			case NLP_STE_MAPPED_NODE:
				ndlp->nlp_prev_state = NLP_STE_NPR_NODE;
3172 3173
				lpfc_nlp_set_state(phba, ndlp,
						   NLP_STE_MAPPED_NODE);
3174 3175 3176 3177 3178 3179 3180 3181
				break;

			default:
				break;
			}
		}

		/* Start discovery - this should just do CLEAR_LA */
已提交
3182 3183
		lpfc_disc_start(phba);
	}
3184
	return 0;
已提交
3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213
}

void
lpfc_els_timeout(unsigned long ptr)
{
	struct lpfc_hba *phba;
	unsigned long iflag;

	phba = (struct lpfc_hba *)ptr;
	if (phba == 0)
		return;
	spin_lock_irqsave(phba->host->host_lock, iflag);
	if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
		phba->work_hba_events |= WORKER_ELS_TMO;
		if (phba->work_wait)
			wake_up(phba->work_wait);
	}
	spin_unlock_irqrestore(phba->host->host_lock, iflag);
	return;
}

void
lpfc_els_timeout_handler(struct lpfc_hba *phba)
{
	struct lpfc_sli_ring *pring;
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;
	struct lpfc_dmabuf *pcmd;
	uint32_t *elscmd;
3214
	uint32_t els_command=0;
已提交
3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232
	uint32_t timeout;
	uint32_t remote_ID;

	if (phba == 0)
		return;
	spin_lock_irq(phba->host->host_lock);
	/* If the timer is already canceled do nothing */
	if (!(phba->work_hba_events & WORKER_ELS_TMO)) {
		spin_unlock_irq(phba->host->host_lock);
		return;
	}
	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;

3233 3234 3235
		if ((piocb->iocb_flag & LPFC_IO_LIBDFC) ||
			(piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN) ||
			(piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)) {
已提交
3236 3237 3238
			continue;
		}
		pcmd = (struct lpfc_dmabuf *) piocb->context2;
3239 3240 3241 3242
		if (pcmd) {
			elscmd = (uint32_t *) (pcmd->virt);
			els_command = *elscmd;
		}
已提交
3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259

		if ((els_command == ELS_CMD_FARP)
		    || (els_command == ELS_CMD_FARPR)) {
			continue;
		}

		if (piocb->drvrTimeout > 0) {
			if (piocb->drvrTimeout >= timeout) {
				piocb->drvrTimeout -= timeout;
			} else {
				piocb->drvrTimeout = 0;
			}
			continue;
		}

		if (cmd->ulpCommand == CMD_GEN_REQUEST64_CR) {
			struct lpfc_nodelist *ndlp;
3260
			ndlp = __lpfc_findnode_rpi(phba, cmd->ulpContext);
已提交
3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272
			remote_ID = ndlp->nlp_DID;
		} else {
			remote_ID = cmd->un.elsreq64.remoteID;
		}

		lpfc_printf_log(phba,
				KERN_ERR,
				LOG_ELS,
				"%d:0127 ELS timeout Data: x%x x%x x%x x%x\n",
				phba->brd_no, els_command,
				remote_ID, cmd->ulpCommand, cmd->ulpIoTag);

3273
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
3274
	}
3275 3276 3277
	if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
		mod_timer(&phba->els_tmofunc, jiffies + HZ * timeout);

已提交
3278 3279 3280 3281
	spin_unlock_irq(phba->host->host_lock);
}

void
3282
lpfc_els_flush_cmd(struct lpfc_hba *phba)
已提交
3283
{
3284
	LIST_HEAD(completions);
3285
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
已提交
3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;

	spin_lock_irq(phba->host->host_lock);
	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 */
3298 3299 3300 3301
		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
3302 3303
			continue;

3304
		list_move_tail(&piocb->list, &completions);
3305
		pring->txq_cnt--;
已提交
3306 3307 3308 3309 3310 3311 3312 3313 3314 3315

	}

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

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

3316
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
3317 3318
	}
	spin_unlock_irq(phba->host->host_lock);
3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332

	while(!list_empty(&completions)) {
		piocb = list_get_first(&completions, struct lpfc_iocbq, list);
		cmd = &piocb->iocb;
		list_del(&piocb->list);

		if (piocb->iocb_cmpl) {
			cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
			cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
			(piocb->iocb_cmpl) (phba, piocb, piocb);
		} else
			lpfc_sli_release_iocbq(phba, piocb);
	}

已提交
3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400
	return;
}

void
lpfc_els_unsol_event(struct lpfc_hba * phba,
		     struct lpfc_sli_ring * pring, struct lpfc_iocbq * elsiocb)
{
	struct lpfc_sli *psli;
	struct lpfc_nodelist *ndlp;
	struct lpfc_dmabuf *mp;
	uint32_t *lp;
	IOCB_t *icmd;
	struct ls_rjt stat;
	uint32_t cmd;
	uint32_t did;
	uint32_t newnode;
	uint32_t drop_cmd = 0;	/* by default do NOT drop received cmd */
	uint32_t rjt_err = 0;

	psli = &phba->sli;
	icmd = &elsiocb->iocb;

	if ((icmd->ulpStatus == IOSTAT_LOCAL_REJECT) &&
		((icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING)) {
		/* Not enough posted buffers; Try posting more buffers */
		phba->fc_stat.NoRcvBuf++;
		lpfc_post_buffer(phba, pring, 0, 1);
		return;
	}

	/* If there are no BDEs associated with this IOCB,
	 * there is nothing to do.
	 */
	if (icmd->ulpBdeCount == 0)
		return;

	/* type of ELS cmd is first 32bit word in packet */
	mp = lpfc_sli_ringpostbuf_get(phba, pring, getPaddr(icmd->un.
							    cont64[0].
							    addrHigh,
							    icmd->un.
							    cont64[0].addrLow));
	if (mp == 0) {
		drop_cmd = 1;
		goto dropit;
	}

	newnode = 0;
	lp = (uint32_t *) mp->virt;
	cmd = *lp++;
	lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], 1, 1);

	if (icmd->ulpStatus) {
		lpfc_mbuf_free(phba, mp->virt, mp->phys);
		kfree(mp);
		drop_cmd = 1;
		goto dropit;
	}

	/* Check to see if link went down during discovery */
	if (lpfc_els_chk_latt(phba)) {
		lpfc_mbuf_free(phba, mp->virt, mp->phys);
		kfree(mp);
		drop_cmd = 1;
		goto dropit;
	}

	did = icmd->un.rcvels.remoteID;
3401
	ndlp = lpfc_findnode_did(phba, did);
3402
	if (!ndlp) {
已提交
3403
		/* Cannot find existing Fabric ndlp, so allocate a new one */
3404 3405
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp) {
已提交
3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416
			lpfc_mbuf_free(phba, mp->virt, mp->phys);
			kfree(mp);
			drop_cmd = 1;
			goto dropit;
		}

		lpfc_nlp_init(phba, ndlp, did);
		newnode = 1;
		if ((did & Fabric_DID_MASK) == Fabric_DID_MASK) {
			ndlp->nlp_type |= NLP_FABRIC;
		}
3417
		lpfc_nlp_set_state(phba, ndlp, NLP_STE_UNUSED_NODE);
已提交
3418 3419 3420
	}

	phba->fc_stat.elsRcvFrame++;
3421 3422 3423
	if (elsiocb->context1)
		lpfc_nlp_put(elsiocb->context1);
	elsiocb->context1 = lpfc_nlp_get(ndlp);
已提交
3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437
	elsiocb->context2 = mp;

	if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
		cmd &= ELS_CMD_MASK;
	}
	/* ELS command <elsCmd> received from NPORT <did> */
	lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
			"%d:0112 ELS command x%x received from NPORT x%x "
			"Data: x%x\n", phba->brd_no, cmd, did, phba->hba_state);

	switch (cmd) {
	case ELS_CMD_PLOGI:
		phba->fc_stat.elsRcvPLOGI++;
		if (phba->hba_state < LPFC_DISC_AUTH) {
3438
			rjt_err = 1;
已提交
3439 3440
			break;
		}
3441
		ndlp = lpfc_plogi_confirm_nport(phba, mp, ndlp);
已提交
3442 3443 3444 3445 3446
		lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PLOGI);
		break;
	case ELS_CMD_FLOGI:
		phba->fc_stat.elsRcvFLOGI++;
		lpfc_els_rcv_flogi(phba, elsiocb, ndlp, newnode);
3447 3448
		if (newnode)
			lpfc_drop_node(phba, ndlp);
已提交
3449 3450 3451 3452
		break;
	case ELS_CMD_LOGO:
		phba->fc_stat.elsRcvLOGO++;
		if (phba->hba_state < LPFC_DISC_AUTH) {
3453
			rjt_err = 1;
已提交
3454 3455 3456 3457 3458 3459 3460
			break;
		}
		lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
		break;
	case ELS_CMD_PRLO:
		phba->fc_stat.elsRcvPRLO++;
		if (phba->hba_state < LPFC_DISC_AUTH) {
3461
			rjt_err = 1;
已提交
3462 3463 3464 3465 3466 3467 3468
			break;
		}
		lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
		break;
	case ELS_CMD_RSCN:
		phba->fc_stat.elsRcvRSCN++;
		lpfc_els_rcv_rscn(phba, elsiocb, ndlp, newnode);
3469 3470
		if (newnode)
			lpfc_drop_node(phba, ndlp);
已提交
3471 3472 3473 3474
		break;
	case ELS_CMD_ADISC:
		phba->fc_stat.elsRcvADISC++;
		if (phba->hba_state < LPFC_DISC_AUTH) {
3475
			rjt_err = 1;
已提交
3476 3477 3478 3479 3480 3481 3482
			break;
		}
		lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_ADISC);
		break;
	case ELS_CMD_PDISC:
		phba->fc_stat.elsRcvPDISC++;
		if (phba->hba_state < LPFC_DISC_AUTH) {
3483
			rjt_err = 1;
已提交
3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502
			break;
		}
		lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PDISC);
		break;
	case ELS_CMD_FARPR:
		phba->fc_stat.elsRcvFARPR++;
		lpfc_els_rcv_farpr(phba, elsiocb, ndlp);
		break;
	case ELS_CMD_FARP:
		phba->fc_stat.elsRcvFARP++;
		lpfc_els_rcv_farp(phba, elsiocb, ndlp);
		break;
	case ELS_CMD_FAN:
		phba->fc_stat.elsRcvFAN++;
		lpfc_els_rcv_fan(phba, elsiocb, ndlp);
		break;
	case ELS_CMD_PRLI:
		phba->fc_stat.elsRcvPRLI++;
		if (phba->hba_state < LPFC_DISC_AUTH) {
3503
			rjt_err = 1;
已提交
3504 3505 3506 3507
			break;
		}
		lpfc_disc_state_machine(phba, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
		break;
3508 3509 3510
	case ELS_CMD_LIRR:
		phba->fc_stat.elsRcvLIRR++;
		lpfc_els_rcv_lirr(phba, elsiocb, ndlp);
3511 3512
		if (newnode)
			lpfc_drop_node(phba, ndlp);
3513 3514 3515 3516
		break;
	case ELS_CMD_RPS:
		phba->fc_stat.elsRcvRPS++;
		lpfc_els_rcv_rps(phba, elsiocb, ndlp);
3517 3518
		if (newnode)
			lpfc_drop_node(phba, ndlp);
3519 3520 3521 3522
		break;
	case ELS_CMD_RPL:
		phba->fc_stat.elsRcvRPL++;
		lpfc_els_rcv_rpl(phba, elsiocb, ndlp);
3523 3524
		if (newnode)
			lpfc_drop_node(phba, ndlp);
3525
		break;
已提交
3526 3527 3528
	case ELS_CMD_RNID:
		phba->fc_stat.elsRcvRNID++;
		lpfc_els_rcv_rnid(phba, elsiocb, ndlp);
3529 3530
		if (newnode)
			lpfc_drop_node(phba, ndlp);
已提交
3531 3532 3533
		break;
	default:
		/* Unsupported ELS command, reject */
3534
		rjt_err = 1;
已提交
3535 3536 3537 3538 3539

		/* Unknown ELS command <elsCmd> received from NPORT <did> */
		lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
				"%d:0115 Unknown ELS command x%x received from "
				"NPORT x%x\n", phba->brd_no, cmd, did);
3540 3541
		if (newnode)
			lpfc_drop_node(phba, ndlp);
已提交
3542 3543 3544 3545 3546 3547 3548
		break;
	}

	/* check if need to LS_RJT received ELS cmd */
	if (rjt_err) {
		stat.un.b.lsRjtRsvd0 = 0;
		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
3549
		stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
已提交
3550 3551 3552 3553
		stat.un.b.vendorUnique = 0;
		lpfc_els_rsp_reject(phba, stat.un.lsRjtError, elsiocb, ndlp);
	}

3554 3555
	lpfc_nlp_put(elsiocb->context1);
	elsiocb->context1 = NULL;
已提交
3556 3557 3558 3559 3560 3561 3562 3563 3564
	if (elsiocb->context2) {
		lpfc_mbuf_free(phba, mp->virt, mp->phys);
		kfree(mp);
	}
dropit:
	/* check if need to drop received ELS cmd */
	if (drop_cmd == 1) {
		lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
				"%d:0111 Dropping received ELS cmd "
3565 3566 3567
				"Data: x%x x%x x%x\n", phba->brd_no,
				icmd->ulpStatus, icmd->un.ulpWord[4],
				icmd->ulpTimeout);
已提交
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		phba->fc_stat.elsRcvDrop++;
	}
	return;
}