lpfc_els.c 219.0 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) 2004-2009 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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 *******************************************************************/
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/* See Fibre Channel protocol T11 FC-LS for details */
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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>

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#include "lpfc_hw4.h"
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#include "lpfc_hw.h"
#include "lpfc_sli.h"
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#include "lpfc_sli4.h"
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#include "lpfc_nl.h"
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#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
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#include "lpfc_vport.h"
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#include "lpfc_debugfs.h"
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static int lpfc_els_retry(struct lpfc_hba *, struct lpfc_iocbq *,
			  struct lpfc_iocbq *);
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static void lpfc_cmpl_fabric_iocb(struct lpfc_hba *, struct lpfc_iocbq *,
			struct lpfc_iocbq *);
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static void lpfc_fabric_abort_vport(struct lpfc_vport *vport);
static int lpfc_issue_els_fdisc(struct lpfc_vport *vport,
				struct lpfc_nodelist *ndlp, uint8_t retry);
static int lpfc_issue_fabric_iocb(struct lpfc_hba *phba,
				  struct lpfc_iocbq *iocb);
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static int lpfc_max_els_tries = 3;

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/**
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 * lpfc_els_chk_latt - Check host link attention event for a vport
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 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine checks whether there is an outstanding host link
 * attention event during the discovery process with the @vport. It is done
 * by reading the HBA's Host Attention (HA) register. If there is any host
 * link attention events during this @vport's discovery process, the @vport
 * shall be marked as FC_ABORT_DISCOVERY, a host link attention clear shall
 * be issued if the link state is not already in host link cleared state,
 * and a return code shall indicate whether the host link attention event
 * had happened.
 *
 * Note that, if either the host link is in state LPFC_LINK_DOWN or @vport
 * state in LPFC_VPORT_READY, the request for checking host link attention
 * event will be ignored and a return code shall indicate no host link
 * attention event had happened.
 *
 * Return codes
 *   0 - no host link attention event happened
 *   1 - host link attention event happened
 **/
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int
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lpfc_els_chk_latt(struct lpfc_vport *vport)
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{
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	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
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	uint32_t ha_copy;

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	if (vport->port_state >= LPFC_VPORT_READY ||
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	    phba->link_state == LPFC_LINK_DOWN ||
	    phba->sli_rev > LPFC_SLI_REV3)
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		return 0;

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

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

	/* Pending Link Event during Discovery */
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	lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
			 "0237 Pending Link Event during "
			 "Discovery: State x%x\n",
			 phba->pport->port_state);
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	/* 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.
	 */
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	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_ABORT_DISCOVERY;
	spin_unlock_irq(shost->host_lock);
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	if (phba->link_state != LPFC_CLEAR_LA)
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		lpfc_issue_clear_la(phba, vport);
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	return 1;
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}

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/**
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 * lpfc_prep_els_iocb - Allocate and prepare a lpfc iocb data structure
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 * @vport: pointer to a host virtual N_Port data structure.
 * @expectRsp: flag indicating whether response is expected.
 * @cmdSize: size of the ELS command.
 * @retry: number of retries to the command IOCB when it fails.
 * @ndlp: pointer to a node-list data structure.
 * @did: destination identifier.
 * @elscmd: the ELS command code.
 *
 * This routine is used for allocating a lpfc-IOCB data structure from
 * the driver lpfc-IOCB free-list and prepare the IOCB with the parameters
 * passed into the routine for discovery state machine to issue an Extended
 * Link Service (ELS) commands. It is a generic lpfc-IOCB allocation
 * and preparation routine that is used by all the discovery state machine
 * routines and the ELS command-specific fields will be later set up by
 * the individual discovery machine routines after calling this routine
 * allocating and preparing a generic IOCB data structure. It fills in the
 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
 * payload and response payload (if expected). The reference count on the
 * ndlp is incremented by 1 and the reference to the ndlp is put into
 * context1 of the IOCB data structure for this IOCB to hold the ndlp
 * reference for the command's callback function to access later.
 *
 * Return code
 *   Pointer to the newly allocated/prepared els iocb data structure
 *   NULL - when els iocb data structure allocation/preparation failed
 **/
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struct lpfc_iocbq *
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lpfc_prep_els_iocb(struct lpfc_vport *vport, uint8_t expectRsp,
		   uint16_t cmdSize, uint8_t retry,
		   struct lpfc_nodelist *ndlp, uint32_t did,
		   uint32_t elscmd)
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{
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	struct lpfc_hba  *phba = vport->phba;
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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;


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	if (!lpfc_is_link_up(phba))
		return NULL;
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	/* Allocate buffer for  command iocb */
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	elsiocb = lpfc_sli_get_iocbq(phba);
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	if (elsiocb == NULL)
		return NULL;
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	/*
	 * If this command is for fabric controller and HBA running
	 * in FIP mode send FLOGI, FDISC and LOGO as FIP frames.
	 */
	if ((did == Fabric_DID) &&
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		(phba->hba_flag & HBA_FIP_SUPPORT) &&
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		((elscmd == ELS_CMD_FLOGI) ||
		 (elscmd == ELS_CMD_FDISC) ||
		 (elscmd == ELS_CMD_LOGO)))
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		switch (elscmd) {
		case ELS_CMD_FLOGI:
		elsiocb->iocb_flag |= ((ELS_ID_FLOGI << LPFC_FIP_ELS_ID_SHIFT)
					& LPFC_FIP_ELS_ID_MASK);
		break;
		case ELS_CMD_FDISC:
		elsiocb->iocb_flag |= ((ELS_ID_FDISC << LPFC_FIP_ELS_ID_SHIFT)
					& LPFC_FIP_ELS_ID_MASK);
		break;
		case ELS_CMD_LOGO:
		elsiocb->iocb_flag |= ((ELS_ID_LOGO << LPFC_FIP_ELS_ID_SHIFT)
					& LPFC_FIP_ELS_ID_MASK);
		break;
		}
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	else
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		elsiocb->iocb_flag &= ~LPFC_FIP_ELS_ID_MASK;
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	icmd = &elsiocb->iocb;

	/* fill in BDEs for command */
	/* Allocate buffer for command payload */
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	pcmd = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
	if (pcmd)
		pcmd->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &pcmd->phys);
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	if (!pcmd || !pcmd->virt)
		goto els_iocb_free_pcmb_exit;
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	INIT_LIST_HEAD(&pcmd->list);

	/* Allocate buffer for response payload */
	if (expectRsp) {
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		prsp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
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		if (prsp)
			prsp->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
						     &prsp->phys);
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		if (!prsp || !prsp->virt)
			goto els_iocb_free_prsp_exit;
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		INIT_LIST_HEAD(&prsp->list);
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	} else
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		prsp = NULL;

	/* Allocate buffer for Buffer ptr list */
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	pbuflist = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
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	if (pbuflist)
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		pbuflist->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
						 &pbuflist->phys);
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	if (!pbuflist || !pbuflist->virt)
		goto els_iocb_free_pbuf_exit;
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	INIT_LIST_HEAD(&pbuflist->list);

	icmd->un.elsreq64.bdl.addrHigh = putPaddrHigh(pbuflist->phys);
	icmd->un.elsreq64.bdl.addrLow = putPaddrLow(pbuflist->phys);
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	icmd->un.elsreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
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	icmd->un.elsreq64.remoteID = did;	/* DID */
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	if (expectRsp) {
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		icmd->un.elsreq64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
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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 {
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		icmd->un.elsreq64.bdl.bdeSize = sizeof(struct ulp_bde64);
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		icmd->ulpCommand = CMD_XMIT_ELS_RSP64_CX;
	}
	icmd->ulpBdeCount = 1;
	icmd->ulpLe = 1;
	icmd->ulpClass = CLASS3;

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

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

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	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;
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		bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
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		bpl->tus.w = le32_to_cpu(bpl->tus.w);
	}

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	/* prevent preparing iocb with NULL ndlp reference */
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	elsiocb->context1 = lpfc_nlp_get(ndlp);
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	if (!elsiocb->context1)
		goto els_iocb_free_pbuf_exit;
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	elsiocb->context2 = pcmd;
	elsiocb->context3 = pbuflist;
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	elsiocb->retry = retry;
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	elsiocb->vport = vport;
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	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> */
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		lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
				 "0116 Xmit ELS command x%x to remote "
				 "NPORT x%x I/O tag: x%x, port state: x%x\n",
				 elscmd, did, elsiocb->iotag,
				 vport->port_state);
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	} else {
		/* Xmit ELS response <elsCmd> to remote NPORT <did> */
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		lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
				 "0117 Xmit ELS response x%x to remote "
				 "NPORT x%x I/O tag: x%x, size: x%x\n",
				 elscmd, ndlp->nlp_DID, elsiocb->iotag,
				 cmdSize);
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	}
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	return elsiocb;
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els_iocb_free_pbuf_exit:
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	if (expectRsp)
		lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
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	kfree(pbuflist);

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

els_iocb_free_pcmb_exit:
	kfree(pcmd);
	lpfc_sli_release_iocbq(phba, elsiocb);
	return NULL;
}
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/**
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 * lpfc_issue_fabric_reglogin - Issue fabric registration login for a vport
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 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues a fabric registration login for a @vport. An
 * active ndlp node with Fabric_DID must already exist for this @vport.
 * The routine invokes two mailbox commands to carry out fabric registration
 * login through the HBA firmware: the first mailbox command requests the
 * HBA to perform link configuration for the @vport; and the second mailbox
 * command requests the HBA to perform the actual fabric registration login
 * with the @vport.
 *
 * Return code
 *   0 - successfully issued fabric registration login for @vport
 *   -ENXIO -- failed to issue fabric registration login for @vport
 **/
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int
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lpfc_issue_fabric_reglogin(struct lpfc_vport *vport)
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{
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	struct lpfc_hba  *phba = vport->phba;
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	LPFC_MBOXQ_t *mbox;
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	struct lpfc_dmabuf *mp;
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	struct lpfc_nodelist *ndlp;
	struct serv_parm *sp;
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	int rc;
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	int err = 0;
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	sp = &phba->fc_fabparam;
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
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	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
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		err = 1;
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		goto fail;
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	}
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	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
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	if (!mbox) {
		err = 2;
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		goto fail;
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	}
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	vport->port_state = LPFC_FABRIC_CFG_LINK;
	lpfc_config_link(phba, mbox);
	mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
	mbox->vport = vport;

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	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
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	if (rc == MBX_NOT_FINISHED) {
		err = 3;
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		goto fail_free_mbox;
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	}
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	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
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	if (!mbox) {
		err = 4;
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		goto fail;
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	}
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	rc = lpfc_reg_rpi(phba, vport->vpi, Fabric_DID, (uint8_t *)sp, mbox, 0);
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	if (rc) {
		err = 5;
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		goto fail_free_mbox;
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	}
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	mbox->mbox_cmpl = lpfc_mbx_cmpl_fabric_reg_login;
	mbox->vport = vport;
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	/* increment the reference count on ndlp to hold reference
	 * for the callback routine.
	 */
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	mbox->context2 = lpfc_nlp_get(ndlp);

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	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
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	if (rc == MBX_NOT_FINISHED) {
		err = 6;
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		goto fail_issue_reg_login;
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	}
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	return 0;

fail_issue_reg_login:
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	/* decrement the reference count on ndlp just incremented
	 * for the failed mbox command.
	 */
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	lpfc_nlp_put(ndlp);
	mp = (struct lpfc_dmabuf *) mbox->context1;
	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	kfree(mp);
fail_free_mbox:
	mempool_free(mbox, phba->mbox_mem_pool);

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

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/**
 * lpfc_issue_reg_vfi - Register VFI for this vport's fabric login
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues a REG_VFI mailbox for the vfi, vpi, fcfi triplet for
 * the @vport. This mailbox command is necessary for FCoE only.
 *
 * Return code
 *   0 - successfully issued REG_VFI for @vport
 *   A failure code otherwise.
 **/
static int
lpfc_issue_reg_vfi(struct lpfc_vport *vport)
{
	struct lpfc_hba  *phba = vport->phba;
	LPFC_MBOXQ_t *mboxq;
	struct lpfc_nodelist *ndlp;
	struct serv_parm *sp;
	struct lpfc_dmabuf *dmabuf;
	int rc = 0;

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

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

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

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/**
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 * lpfc_cmpl_els_flogi_fabric - Completion function for flogi to a fabric port
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 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @sp: pointer to service parameter data structure.
 * @irsp: pointer to the IOCB within the lpfc response IOCB.
 *
 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
 * function to handle the completion of a Fabric Login (FLOGI) into a fabric
 * port in a fabric topology. It properly sets up the parameters to the @ndlp
 * from the IOCB response. It also check the newly assigned N_Port ID to the
 * @vport against the previously assigned N_Port ID. If it is different from
 * the previously assigned Destination ID (DID), the lpfc_unreg_rpi() routine
 * is invoked on all the remaining nodes with the @vport to unregister the
 * Remote Port Indicators (RPIs). Finally, the lpfc_issue_fabric_reglogin()
 * is invoked to register login to the fabric.
 *
 * Return code
 *   0 - Success (currently, always return 0)
 **/
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static int
lpfc_cmpl_els_flogi_fabric(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
			   struct serv_parm *sp, IOCB_t *irsp)
{
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
	struct lpfc_nodelist *np;
	struct lpfc_nodelist *next_np;

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	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_FABRIC;
	spin_unlock_irq(shost->host_lock);
已提交
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	phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
	if (sp->cmn.edtovResolution)	/* E_D_TOV ticks are in nanoseconds */
		phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;

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

	if (phba->fc_topology == TOPOLOGY_LOOP) {
J
James Smart 已提交
522 523 524
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PUBLIC_LOOP;
		spin_unlock_irq(shost->host_lock);
已提交
525 526 527 528 529
	} else {
		/*
		 * If we are a N-port connected to a Fabric, fixup sparam's so
		 * logins to devices on remote loops work.
		 */
J
James Smart 已提交
530
		vport->fc_sparam.cmn.altBbCredit = 1;
已提交
531 532
	}

J
James Smart 已提交
533
	vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
已提交
534
	memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
535
	memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
已提交
536 537 538 539 540 541 542 543 544 545 546 547 548
	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));

549 550
	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
		if (sp->cmn.response_multiple_NPort) {
551 552 553 554 555
			lpfc_printf_vlog(vport, KERN_WARNING,
					 LOG_ELS | LOG_VPORT,
					 "1816 FLOGI NPIV supported, "
					 "response data 0x%x\n",
					 sp->cmn.response_multiple_NPort);
556 557 558
			phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
		} else {
			/* Because we asked f/w for NPIV it still expects us
559 560 561 562 563
			to call reg_vnpid atleast for the physcial host */
			lpfc_printf_vlog(vport, KERN_WARNING,
					 LOG_ELS | LOG_VPORT,
					 "1817 Fabric does not support NPIV "
					 "- configuring single port mode.\n");
564 565 566
			phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
		}
	}
已提交
567

568 569
	if ((vport->fc_prevDID != vport->fc_myDID) &&
		!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
已提交
570

571 572 573 574 575
		/* If our NportID changed, we need to ensure all
		 * remaining NPORTs get unreg_login'ed.
		 */
		list_for_each_entry_safe(np, next_np,
					&vport->fc_nodes, nlp_listp) {
576
			if (!NLP_CHK_NODE_ACT(np))
577
				continue;
578 579 580 581 582 583 584 585 586 587
			if ((np->nlp_state != NLP_STE_NPR_NODE) ||
				   !(np->nlp_flag & NLP_NPR_ADISC))
				continue;
			spin_lock_irq(shost->host_lock);
			np->nlp_flag &= ~NLP_NPR_ADISC;
			spin_unlock_irq(shost->host_lock);
			lpfc_unreg_rpi(vport, np);
		}
		if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
			lpfc_mbx_unreg_vpi(vport);
588
			spin_lock_irq(shost->host_lock);
589
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
590
			spin_unlock_irq(shost->host_lock);
591
		}
592 593 594 595 596 597 598 599 600
		/*
		 * If VPI is unreged, driver need to do INIT_VPI
		 * before re-registering
		 */
		if (phba->sli_rev == LPFC_SLI_REV4) {
			spin_lock_irq(shost->host_lock);
			vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
			spin_unlock_irq(shost->host_lock);
		}
601
	}
已提交
602

603 604 605 606 607 608 609 610 611 612
	if (phba->sli_rev < LPFC_SLI_REV4) {
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
		if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
		    vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
			lpfc_register_new_vport(phba, vport, ndlp);
		else
			lpfc_issue_fabric_reglogin(vport);
	} else {
		ndlp->nlp_type |= NLP_FABRIC;
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
613 614
		if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
			(vport->vpi_state & LPFC_VPI_REGISTERED)) {
615 616
			lpfc_start_fdiscs(phba);
			lpfc_do_scr_ns_plogi(phba, vport);
617
		} else if (vport->fc_flag & FC_VFI_REGISTERED)
618
			lpfc_issue_init_vpi(vport);
619
		else
620
			lpfc_issue_reg_vfi(vport);
621
	}
已提交
622 623
	return 0;
}
624
/**
625
 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643
 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @sp: pointer to service parameter data structure.
 *
 * This routine is invoked by the lpfc_cmpl_els_flogi() completion callback
 * function to handle the completion of a Fabric Login (FLOGI) into an N_Port
 * in a point-to-point topology. First, the @vport's N_Port Name is compared
 * with the received N_Port Name: if the @vport's N_Port Name is greater than
 * the received N_Port Name lexicographically, this node shall assign local
 * N_Port ID (PT2PT_LocalID: 1) and remote N_Port ID (PT2PT_RemoteID: 2) and
 * will send out Port Login (PLOGI) with the N_Port IDs assigned. Otherwise,
 * this node shall just wait for the remote node to issue PLOGI and assign
 * N_Port IDs.
 *
 * Return code
 *   0 - Success
 *   -ENXIO - Fail
 **/
已提交
644
static int
J
James Smart 已提交
645 646
lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
			  struct serv_parm *sp)
已提交
647
{
J
James Smart 已提交
648 649
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
650 651 652
	LPFC_MBOXQ_t *mbox;
	int rc;

J
James Smart 已提交
653 654 655
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
	spin_unlock_irq(shost->host_lock);
已提交
656 657 658

	phba->fc_edtov = FF_DEF_EDTOV;
	phba->fc_ratov = FF_DEF_RATOV;
J
James Smart 已提交
659
	rc = memcmp(&vport->fc_portname, &sp->portName,
660
		    sizeof(vport->fc_portname));
已提交
661 662
	if (rc >= 0) {
		/* This side will initiate the PLOGI */
J
James Smart 已提交
663 664 665
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PT2PT_PLOGI;
		spin_unlock_irq(shost->host_lock);
已提交
666 667 668 669 670 671 672 673

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

		/* not equal */
		if (rc)
J
James Smart 已提交
674
			vport->fc_myDID = PT2PT_LocalID;
已提交
675 676 677 678 679 680 681 682

		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;
683
		mbox->vport = vport;
684
		rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
已提交
685 686 687 688
		if (rc == MBX_NOT_FINISHED) {
			mempool_free(mbox, phba->mbox_mem_pool);
			goto fail;
		}
689 690 691
		/* Decrement ndlp reference count indicating that ndlp can be
		 * safely released when other references to it are done.
		 */
692
		lpfc_nlp_put(ndlp);
已提交
693

J
James Smart 已提交
694
		ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
已提交
695 696 697 698 699 700 701 702
		if (!ndlp) {
			/*
			 * Cannot find existing Fabric ndlp, so allocate a
			 * new one
			 */
			ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
			if (!ndlp)
				goto fail;
J
James Smart 已提交
703
			lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
704 705 706 707 708
		} else if (!NLP_CHK_NODE_ACT(ndlp)) {
			ndlp = lpfc_enable_node(vport, ndlp,
						NLP_STE_UNUSED_NODE);
			if(!ndlp)
				goto fail;
已提交
709 710 711
		}

		memcpy(&ndlp->nlp_portname, &sp->portName,
J
James Smart 已提交
712
		       sizeof(struct lpfc_name));
已提交
713
		memcpy(&ndlp->nlp_nodename, &sp->nodeName,
J
James Smart 已提交
714
		       sizeof(struct lpfc_name));
715
		/* Set state will put ndlp onto node list if not already done */
J
James Smart 已提交
716 717
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
		spin_lock_irq(shost->host_lock);
已提交
718
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
719
		spin_unlock_irq(shost->host_lock);
720 721 722 723 724
	} else
		/* This side will wait for the PLOGI, decrement ndlp reference
		 * count indicating that ndlp can be released when other
		 * references to it are done.
		 */
725
		lpfc_nlp_put(ndlp);
已提交
726

727 728 729
	/* If we are pt2pt with another NPort, force NPIV off! */
	phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;

J
James Smart 已提交
730 731 732
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_PT2PT;
	spin_unlock_irq(shost->host_lock);
已提交
733 734

	/* Start discovery - this should just do CLEAR_LA */
J
James Smart 已提交
735
	lpfc_disc_start(vport);
已提交
736
	return 0;
737
fail:
已提交
738 739 740
	return -ENXIO;
}

741
/**
742
 * lpfc_cmpl_els_flogi - Completion callback function for flogi
743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the top-level completion callback function for issuing
 * a Fabric Login (FLOGI) command. If the response IOCB reported error,
 * the lpfc_els_retry() routine shall be invoked to retry the FLOGI. If
 * retry has been made (either immediately or delayed with lpfc_els_retry()
 * returning 1), the command IOCB will be released and function returned.
 * If the retry attempt has been given up (possibly reach the maximum
 * number of retries), one additional decrement of ndlp reference shall be
 * invoked before going out after releasing the command IOCB. This will
 * actually release the remote node (Note, lpfc_els_free_iocb() will also
 * invoke one decrement of ndlp reference count). If no error reported in
 * the IOCB status, the command Port ID field is used to determine whether
 * this is a point-to-point topology or a fabric topology: if the Port ID
 * field is assigned, it is a fabric topology; otherwise, it is a
 * point-to-point topology. The routine lpfc_cmpl_els_flogi_fabric() or
 * lpfc_cmpl_els_flogi_nport() shall be invoked accordingly to handle the
 * specific topology completion conditions.
 **/
已提交
764
static void
765 766
lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
767
{
J
James Smart 已提交
768 769
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
770 771 772 773
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_nodelist *ndlp = cmdiocb->context1;
	struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
	struct serv_parm *sp;
774
	uint16_t fcf_index;
已提交
775 776 777
	int rc;

	/* Check to see if link went down during discovery */
J
James Smart 已提交
778
	if (lpfc_els_chk_latt(vport)) {
779 780 781
		/* One additional decrement on node reference count to
		 * trigger the release of the node
		 */
782
		lpfc_nlp_put(ndlp);
已提交
783 784 785
		goto out;
	}

J
James Smart 已提交
786 787 788 789 790
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"FLOGI cmpl:      status:x%x/x%x state:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		vport->port_state);

已提交
791
	if (irsp->ulpStatus) {
792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839
		/*
		 * In case of FIP mode, perform round robin FCF failover
		 * due to new FCF discovery
		 */
		if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
		    (phba->fcf.fcf_flag & FCF_DISCOVERY)) {
			lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
					"2611 FLOGI failed on registered "
					"FCF record fcf_index:%d, trying "
					"to perform round robin failover\n",
					phba->fcf.current_rec.fcf_indx);
			fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
			if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
				/*
				 * Exhausted the eligible FCF record list,
				 * fail through to retry FLOGI on current
				 * FCF record.
				 */
				lpfc_printf_log(phba, KERN_WARNING,
						LOG_FIP | LOG_ELS,
						"2760 FLOGI exhausted FCF "
						"round robin failover list, "
						"retry FLOGI on the current "
						"registered FCF index:%d\n",
						phba->fcf.current_rec.fcf_indx);
				spin_lock_irq(&phba->hbalock);
				phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
				spin_unlock_irq(&phba->hbalock);
			} else {
				rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba,
								   fcf_index);
				if (rc) {
					lpfc_printf_log(phba, KERN_WARNING,
							LOG_FIP | LOG_ELS,
							"2761 FLOGI round "
							"robin FCF failover "
							"read FCF failed "
							"rc:x%x, fcf_index:"
							"%d\n", rc,
						phba->fcf.current_rec.fcf_indx);
					spin_lock_irq(&phba->hbalock);
					phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
					spin_unlock_irq(&phba->hbalock);
				} else
					goto out;
			}
		}

已提交
840
		/* Check for retry */
J
James Smart 已提交
841
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
842
			goto out;
J
James Smart 已提交
843

已提交
844
		/* FLOGI failed, so there is no fabric */
J
James Smart 已提交
845 846 847
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
		spin_unlock_irq(shost->host_lock);
已提交
848

849
		/* If private loop, then allow max outstanding els to be
已提交
850 851 852 853
		 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
		 * alpa map would take too long otherwise.
		 */
		if (phba->alpa_map[0] == 0) {
854
			vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
已提交
855 856 857
		}

		/* FLOGI failure */
858 859
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0100 FLOGI failure Status:x%x/x%x TMO:x%x\n",
860 861
				 irsp->ulpStatus, irsp->un.ulpWord[4],
				 irsp->ulpTimeout);
已提交
862 863
		goto flogifail;
	}
864 865 866
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
	spin_unlock_irq(shost->host_lock);
已提交
867 868 869 870 871 872 873 874 875 876

	/*
	 * 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 */
877
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
878
			 "0101 FLOGI completes successfully "
879 880 881
			 "Data: x%x x%x x%x x%x\n",
			 irsp->un.ulpWord[4], sp->cmn.e_d_tov,
			 sp->cmn.w2.r_a_tov, sp->cmn.edtovResolution);
已提交
882

J
James Smart 已提交
883
	if (vport->port_state == LPFC_FLOGI) {
已提交
884 885 886 887 888
		/*
		 * If Common Service Parameters indicate Nport
		 * we are point to point, if Fport we are Fabric.
		 */
		if (sp->cmn.fPort)
J
James Smart 已提交
889
			rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
已提交
890
		else
J
James Smart 已提交
891
			rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
已提交
892

893 894 895 896 897 898 899 900 901 902
		if (!rc) {
			/* Mark the FCF discovery process done */
			lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP | LOG_ELS,
					 "2769 FLOGI successful on FCF record: "
					 "current_fcf_index:x%x, terminate FCF "
					 "round robin failover process\n",
					 phba->fcf.current_rec.fcf_indx);
			spin_lock_irq(&phba->hbalock);
			phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
			spin_unlock_irq(&phba->hbalock);
已提交
903
			goto out;
904
		}
已提交
905 906 907
	}

flogifail:
908
	lpfc_nlp_put(ndlp);
已提交
909

J
James Smart 已提交
910
	if (!lpfc_error_lost_link(irsp)) {
已提交
911
		/* FLOGI failed, so just use loop map to make discovery list */
J
James Smart 已提交
912
		lpfc_disc_list_loopmap(vport);
已提交
913 914

		/* Start discovery */
J
James Smart 已提交
915
		lpfc_disc_start(vport);
916 917 918 919 920 921
	} else if (((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
			((irsp->un.ulpWord[4] != IOERR_SLI_ABORTED) &&
			(irsp->un.ulpWord[4] != IOERR_SLI_DOWN))) &&
			(phba->link_state != LPFC_CLEAR_LA)) {
		/* If FLOGI failed enable link interrupt. */
		lpfc_issue_clear_la(phba, vport);
已提交
922 923 924 925 926
	}
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

927
/**
928
 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948
 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a Fabric Login (FLOGI) Request ELS command
 * for a @vport. The initiator service parameters are put into the payload
 * of the FLOGI Request IOCB and the top-level callback function pointer
 * to lpfc_cmpl_els_flogi() routine is put to the IOCB completion callback
 * function field. The lpfc_issue_fabric_iocb routine is invoked to send
 * out FLOGI ELS command with one outstanding fabric IOCB at a time.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the FLOGI ELS command.
 *
 * Return code
 *   0 - successfully issued flogi iocb for @vport
 *   1 - failed to issue flogi iocb for @vport
 **/
已提交
949
static int
J
James Smart 已提交
950
lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
951 952
		     uint8_t retry)
{
J
James Smart 已提交
953
	struct lpfc_hba  *phba = vport->phba;
已提交
954 955 956 957 958 959 960 961 962 963 964
	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];

965
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
J
James Smart 已提交
966 967
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_FLOGI);
968

969
	if (!elsiocb)
970
		return 1;
已提交
971 972 973 974 975 976

	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;
977 978
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
979 980 981 982 983 984 985 986 987 988 989 990 991
	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;

992 993 994 995 996 997 998
	if  (phba->sli_rev == LPFC_SLI_REV4) {
		elsiocb->iocb.ulpCt_h = ((SLI4_CT_FCFI >> 1) & 1);
		elsiocb->iocb.ulpCt_l = (SLI4_CT_FCFI & 1);
		/* FLOGI needs to be 3 for WQE FCFI */
		/* Set the fcfi to the fcfi we registered with */
		elsiocb->iocb.ulpContext = phba->fcf.fcfi;
	} else if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
999 1000 1001 1002 1003 1004
		sp->cmn.request_multiple_Nport = 1;
		/* For FLOGI, Let FLOGI rsp set the NPortID for VPI 0 */
		icmd->ulpCt_h = 1;
		icmd->ulpCt_l = 0;
	}

J
James Smart 已提交
1005 1006 1007 1008 1009
	if (phba->fc_topology != TOPOLOGY_LOOP) {
		icmd->un.elsreq64.myID = 0;
		icmd->un.elsreq64.fl = 1;
	}

已提交
1010 1011
	tmo = phba->fc_ratov;
	phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
J
James Smart 已提交
1012
	lpfc_set_disctmo(vport);
已提交
1013 1014 1015 1016
	phba->fc_ratov = tmo;

	phba->fc_stat.elsXmitFLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
J
James Smart 已提交
1017 1018 1019 1020 1021

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

1022
	rc = lpfc_issue_fabric_iocb(phba, elsiocb);
已提交
1023 1024
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
1025
		return 1;
已提交
1026
	}
1027
	return 0;
已提交
1028 1029
}

1030
/**
1031
 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1032 1033 1034 1035 1036 1037 1038 1039 1040 1041
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine aborts all the outstanding Fabric Login (FLOGI) IOCBs
 * with a @phba. This routine walks all the outstanding IOCBs on the txcmplq
 * list and issues an abort IOCB commond on each outstanding IOCB that
 * contains a active Fabric_DID ndlp. Note that this function is to issue
 * the abort IOCB command on all the outstanding IOCBs, thus when this
 * function returns, it does not guarantee all the IOCBs are actually aborted.
 *
 * Return code
D
Daniel Mack 已提交
1042
 *   0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1043
 **/
已提交
1044
int
J
James Smart 已提交
1045
lpfc_els_abort_flogi(struct lpfc_hba *phba)
已提交
1046 1047 1048 1049 1050 1051 1052 1053
{
	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,
1054 1055
			"0201 Abort outstanding I/O on NPort x%x\n",
			Fabric_DID);
已提交
1056 1057 1058 1059 1060 1061 1062

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

	/*
	 * Check the txcmplq for an iocb that matches the nport the driver is
	 * searching for.
	 */
J
James Smart 已提交
1063
	spin_lock_irq(&phba->hbalock);
已提交
1064 1065
	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
		icmd = &iocb->iocb;
J
James Smart 已提交
1066 1067
		if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
		    icmd->un.elsreq64.bdl.ulpIoTag32) {
已提交
1068
			ndlp = (struct lpfc_nodelist *)(iocb->context1);
1069 1070
			if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
			    (ndlp->nlp_DID == Fabric_DID))
1071
				lpfc_sli_issue_abort_iotag(phba, pring, iocb);
已提交
1072 1073
		}
	}
J
James Smart 已提交
1074
	spin_unlock_irq(&phba->hbalock);
已提交
1075 1076 1077 1078

	return 0;
}

1079
/**
1080
 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues an initial Fabric Login (FLOGI) for the @vport
 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
 * it will just be enabled and made active. The lpfc_issue_els_flogi() routine
 * is then invoked with the @vport and the ndlp to perform the FLOGI for the
 * @vport.
 *
 * Return code
 *   0 - failed to issue initial flogi for @vport
 *   1 - successfully issued initial flogi for @vport
 **/
已提交
1095
int
J
James Smart 已提交
1096
lpfc_initial_flogi(struct lpfc_vport *vport)
已提交
1097
{
J
James Smart 已提交
1098
	struct lpfc_hba *phba = vport->phba;
已提交
1099 1100
	struct lpfc_nodelist *ndlp;

1101 1102 1103
	vport->port_state = LPFC_FLOGI;
	lpfc_set_disctmo(vport);

1104
	/* First look for the Fabric ndlp */
J
James Smart 已提交
1105
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
1106
	if (!ndlp) {
已提交
1107
		/* Cannot find existing Fabric ndlp, so allocate a new one */
1108 1109 1110
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 0;
J
James Smart 已提交
1111
		lpfc_nlp_init(vport, ndlp, Fabric_DID);
1112 1113
		/* Set the node type */
		ndlp->nlp_type |= NLP_FABRIC;
1114 1115 1116 1117 1118 1119 1120
		/* Put ndlp onto node list */
		lpfc_enqueue_node(vport, ndlp);
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		/* re-setup ndlp without removing from node list */
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp)
			return 0;
已提交
1121
	}
1122

1123
	if (lpfc_issue_els_flogi(vport, ndlp, 0))
1124 1125 1126
		/* This decrement of reference count to node shall kick off
		 * the release of the node.
		 */
1127
		lpfc_nlp_put(ndlp);
1128

1129
	return 1;
已提交
1130 1131
}

1132
/**
1133
 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues an initial Fabric Discover (FDISC) for the @vport
 * specified. It first searches the ndlp with the Fabric_DID (0xfffffe) from
 * the @vport's ndlp list. If no such ndlp found, it will create an ndlp and
 * put it into the @vport's ndlp list. If an inactive ndlp found on the list,
 * it will just be enabled and made active. The lpfc_issue_els_fdisc() routine
 * is then invoked with the @vport and the ndlp to perform the FDISC for the
 * @vport.
 *
 * Return code
 *   0 - failed to issue initial fdisc for @vport
 *   1 - successfully issued initial fdisc for @vport
 **/
1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161
int
lpfc_initial_fdisc(struct lpfc_vport *vport)
{
	struct lpfc_hba *phba = vport->phba;
	struct lpfc_nodelist *ndlp;

	/* First look for the Fabric ndlp */
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
	if (!ndlp) {
		/* Cannot find existing Fabric ndlp, so allocate a new one */
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 0;
		lpfc_nlp_init(vport, ndlp, Fabric_DID);
1162 1163 1164 1165 1166 1167 1168
		/* Put ndlp onto node list */
		lpfc_enqueue_node(vport, ndlp);
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		/* re-setup ndlp without removing from node list */
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp)
			return 0;
1169
	}
1170

1171
	if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1172 1173 1174
		/* decrement node reference count to trigger the release of
		 * the node.
		 */
1175
		lpfc_nlp_put(ndlp);
1176
		return 0;
1177 1178 1179
	}
	return 1;
}
1180

1181
/**
1182
 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1183 1184 1185 1186 1187 1188 1189 1190 1191
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine checks whether there are more remaining Port Logins
 * (PLOGI) to be issued for the @vport. If so, it will invoke the routine
 * lpfc_els_disc_plogi() to go through the Node Port Recovery (NPR) nodes
 * to issue ELS PLOGIs up to the configured discover threads with the
 * @vport (@vport->cfg_discovery_threads). The function also decrement
 * the @vport's num_disc_node by 1 if it is not already 0.
 **/
1192
void
J
James Smart 已提交
1193
lpfc_more_plogi(struct lpfc_vport *vport)
已提交
1194 1195 1196
{
	int sentplogi;

J
James Smart 已提交
1197 1198
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1199 1200

	/* Continue discovery with <num_disc_nodes> PLOGIs to go */
1201 1202 1203 1204 1205
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0232 Continue discovery with %d PLOGIs to go "
			 "Data: x%x x%x x%x\n",
			 vport->num_disc_nodes, vport->fc_plogi_cnt,
			 vport->fc_flag, vport->port_state);
已提交
1206
	/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1207 1208 1209 1210
	if (vport->fc_flag & FC_NLP_MORE)
		/* go thru NPR nodes and issue any remaining ELS PLOGIs */
		sentplogi = lpfc_els_disc_plogi(vport);

已提交
1211 1212 1213
	return;
}

1214
/**
1215
 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244
 * @phba: pointer to lpfc hba data structure.
 * @prsp: pointer to response IOCB payload.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine checks and indicates whether the WWPN of an N_Port, retrieved
 * from a PLOGI, matches the WWPN that is stored in the @ndlp for that N_POrt.
 * The following cases are considered N_Port confirmed:
 * 1) The N_Port is a Fabric ndlp; 2) The @ndlp is on vport list and matches
 * the WWPN of the N_Port logged into; 3) The @ndlp is not on vport list but
 * it does not have WWPN assigned either. If the WWPN is confirmed, the
 * pointer to the @ndlp will be returned. If the WWPN is not confirmed:
 * 1) if there is a node on vport list other than the @ndlp with the same
 * WWPN of the N_Port PLOGI logged into, the lpfc_unreg_rpi() will be invoked
 * on that node to release the RPI associated with the node; 2) if there is
 * no node found on vport list with the same WWPN of the N_Port PLOGI logged
 * into, a new node shall be allocated (or activated). In either case, the
 * parameters of the @ndlp shall be copied to the new_ndlp, the @ndlp shall
 * be released and the new_ndlp shall be put on to the vport node list and
 * its pointer returned as the confirmed node.
 *
 * Note that before the @ndlp got "released", the keepDID from not-matching
 * or inactive "new_ndlp" on the vport node list is assigned to the nlp_DID
 * of the @ndlp. This is because the release of @ndlp is actually to put it
 * into an inactive state on the vport node list and the vport node list
 * management algorithm does not allow two node with a same DID.
 *
 * Return code
 *   pointer to the PLOGI N_Port @ndlp
 **/
1245
static struct lpfc_nodelist *
1246
lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1247 1248
			 struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
1249
	struct lpfc_vport    *vport = ndlp->vport;
1250
	struct lpfc_nodelist *new_ndlp;
1251 1252
	struct lpfc_rport_data *rdata;
	struct fc_rport *rport;
1253
	struct serv_parm *sp;
1254
	uint8_t  name[sizeof(struct lpfc_name)];
1255
	uint32_t rc, keepDID = 0;
1256

J
James Smart 已提交
1257 1258 1259 1260 1261 1262
	/* 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;

1263
	sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1264
	memset(name, 0, sizeof(struct lpfc_name));
1265

1266
	/* Now we find out if the NPort we are logging into, matches the WWPN
1267 1268
	 * we have for that ndlp. If not, we have some work to do.
	 */
J
James Smart 已提交
1269
	new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1270

1271
	if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1272 1273 1274
		return ndlp;

	if (!new_ndlp) {
J
James Smart 已提交
1275 1276
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
1277 1278
		if (!rc)
			return ndlp;
1279 1280 1281
		new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
		if (!new_ndlp)
			return ndlp;
J
James Smart 已提交
1282
		lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1283
	} else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1284 1285 1286 1287
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
		if (!rc)
			return ndlp;
1288 1289 1290 1291
		new_ndlp = lpfc_enable_node(vport, new_ndlp,
						NLP_STE_UNUSED_NODE);
		if (!new_ndlp)
			return ndlp;
1292 1293 1294
		keepDID = new_ndlp->nlp_DID;
	} else
		keepDID = new_ndlp->nlp_DID;
1295

J
James Smart 已提交
1296
	lpfc_unreg_rpi(vport, new_ndlp);
1297
	new_ndlp->nlp_DID = ndlp->nlp_DID;
1298
	new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1299 1300 1301 1302 1303

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

1304
	/* Set state will put new_ndlp on to node list if not already done */
J
James Smart 已提交
1305
	lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1306

J
James Smart 已提交
1307
	/* Move this back to NPR state */
1308 1309 1310 1311
	if (memcmp(&ndlp->nlp_portname, name, sizeof(struct lpfc_name)) == 0) {
		/* The new_ndlp is replacing ndlp totally, so we need
		 * to put ndlp on UNUSED list and try to free it.
		 */
1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324

		/* Fix up the rport accordingly */
		rport =  ndlp->rport;
		if (rport) {
			rdata = rport->dd_data;
			if (rdata->pnode == ndlp) {
				lpfc_nlp_put(ndlp);
				ndlp->rport = NULL;
				rdata->pnode = lpfc_nlp_get(new_ndlp);
				new_ndlp->rport = rport;
			}
			new_ndlp->nlp_type = ndlp->nlp_type;
		}
1325 1326 1327 1328 1329 1330 1331 1332 1333
		/* We shall actually free the ndlp with both nlp_DID and
		 * nlp_portname fields equals 0 to avoid any ndlp on the
		 * nodelist never to be used.
		 */
		if (ndlp->nlp_DID == 0) {
			spin_lock_irq(&phba->ndlp_lock);
			NLP_SET_FREE_REQ(ndlp);
			spin_unlock_irq(&phba->ndlp_lock);
		}
1334

1335 1336
		/* Two ndlps cannot have the same did on the nodelist */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1337
		lpfc_drop_node(vport, ndlp);
1338
	}
1339
	else {
J
James Smart 已提交
1340
		lpfc_unreg_rpi(vport, ndlp);
1341 1342
		/* Two ndlps cannot have the same did */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1343
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1344
	}
1345 1346 1347
	return new_ndlp;
}

1348
/**
1349
 * lpfc_end_rscn - Check and handle more rscn for a vport
1350 1351 1352 1353 1354 1355 1356 1357 1358
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine checks whether more Registration State Change
 * Notifications (RSCNs) came in while the discovery state machine was in
 * the FC_RSCN_MODE. If so, the lpfc_els_handle_rscn() routine will be
 * invoked to handle the additional RSCNs for the @vport. Otherwise, the
 * FC_RSCN_MODE bit will be cleared with the @vport to mark as the end of
 * handling the RSCNs.
 **/
1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379
void
lpfc_end_rscn(struct lpfc_vport *vport)
{
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

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

1380
/**
1381
 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function for issuing the Port
 * Login (PLOGI) command. For PLOGI completion, there must be an active
 * ndlp on the vport node list that matches the remote node ID from the
 * PLOGI reponse IOCB. If such ndlp does not exist, the PLOGI is simply
 * ignored and command IOCB released. The PLOGI response IOCB status is
 * checked for error conditons. If there is error status reported, PLOGI
 * retry shall be attempted by invoking the lpfc_els_retry() routine.
 * Otherwise, the lpfc_plogi_confirm_nport() routine shall be invoked on
 * the ndlp and the NLP_EVT_CMPL_PLOGI state to the Discover State Machine
 * (DSM) is set for this PLOGI completion. Finally, it checks whether
 * there are additional N_Port nodes with the vport that need to perform
 * PLOGI. If so, the lpfc_more_plogi() routine is invoked to issue addition
 * PLOGIs.
 **/
已提交
1400
static void
J
James Smart 已提交
1401 1402
lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1403
{
J
James Smart 已提交
1404 1405
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1406 1407
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
1408
	struct lpfc_dmabuf *prsp;
已提交
1409 1410 1411 1412 1413 1414
	int disc, rc, did, type;

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

	irsp = &rspiocb->iocb;
J
James Smart 已提交
1415 1416 1417 1418 1419
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"PLOGI cmpl:      status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		irsp->un.elsreq64.remoteID);

J
James Smart 已提交
1420
	ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1421
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1422 1423 1424 1425 1426 1427
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0136 PLOGI completes to NPort x%x "
				 "with no ndlp. Data: x%x x%x x%x\n",
				 irsp->un.elsreq64.remoteID,
				 irsp->ulpStatus, irsp->un.ulpWord[4],
				 irsp->ulpIoTag);
1428
		goto out;
1429
	}
已提交
1430 1431 1432 1433

	/* Since ndlp can be freed in the disc state machine, note if this node
	 * is being used during discovery.
	 */
J
James Smart 已提交
1434
	spin_lock_irq(shost->host_lock);
已提交
1435
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1436
	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
1437
	spin_unlock_irq(shost->host_lock);
已提交
1438 1439 1440
	rc   = 0;

	/* PLOGI completes to NPort <nlp_DID> */
1441 1442 1443 1444 1445
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0102 PLOGI completes to NPort x%x "
			 "Data: x%x x%x x%x x%x x%x\n",
			 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
			 irsp->ulpTimeout, disc, vport->num_disc_nodes);
已提交
1446
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1447 1448
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1449
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1450
		spin_unlock_irq(shost->host_lock);
已提交
1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462
		goto out;
	}

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

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			if (disc) {
J
James Smart 已提交
1463
				spin_lock_irq(shost->host_lock);
已提交
1464
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1465
				spin_unlock_irq(shost->host_lock);
已提交
1466 1467 1468 1469
			}
			goto out;
		}
		/* PLOGI failed */
1470 1471 1472 1473
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
1474
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1475
		if (lpfc_error_lost_link(irsp))
1476
			rc = NLP_STE_FREED_NODE;
1477
		else
J
James Smart 已提交
1478
			rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1479
						     NLP_EVT_CMPL_PLOGI);
已提交
1480 1481
	} else {
		/* Good status, call state machine */
1482
		prsp = list_entry(((struct lpfc_dmabuf *)
1483 1484 1485
				   cmdiocb->context2)->list.next,
				  struct lpfc_dmabuf, list);
		ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
J
James Smart 已提交
1486
		rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1487
					     NLP_EVT_CMPL_PLOGI);
已提交
1488 1489
	}

J
James Smart 已提交
1490
	if (disc && vport->num_disc_nodes) {
已提交
1491
		/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1492
		lpfc_more_plogi(vport);
已提交
1493

J
James Smart 已提交
1494 1495 1496 1497
		if (vport->num_disc_nodes == 0) {
			spin_lock_irq(shost->host_lock);
			vport->fc_flag &= ~FC_NDISC_ACTIVE;
			spin_unlock_irq(shost->host_lock);
已提交
1498

J
James Smart 已提交
1499
			lpfc_can_disctmo(vport);
1500
			lpfc_end_rscn(vport);
已提交
1501 1502 1503 1504 1505 1506 1507 1508
		}
	}

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

1509
/**
1510
 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529
 * @vport: pointer to a host virtual N_Port data structure.
 * @did: destination port identifier.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a Port Login (PLOGI) command to a remote N_Port
 * (with the @did) for a @vport. Before issuing a PLOGI to a remote N_Port,
 * the ndlp with the remote N_Port DID must exist on the @vport's ndlp list.
 * This routine constructs the proper feilds of the PLOGI IOCB and invokes
 * the lpfc_sli_issue_iocb() routine to send out PLOGI ELS command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the PLOGI ELS command.
 *
 * Return code
 *   0 - Successfully issued a plogi for @vport
 *   1 - failed to issue a plogi for @vport
 **/
已提交
1530
int
J
James Smart 已提交
1531
lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
已提交
1532
{
J
James Smart 已提交
1533
	struct lpfc_hba  *phba = vport->phba;
已提交
1534 1535
	struct serv_parm *sp;
	IOCB_t *icmd;
1536
	struct lpfc_nodelist *ndlp;
已提交
1537 1538 1539 1540
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
1541
	int ret;
已提交
1542 1543 1544

	psli = &phba->sli;

1545
	ndlp = lpfc_findnode_did(vport, did);
1546 1547
	if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
		ndlp = NULL;
1548

1549
	/* If ndlp is not NULL, we will bump the reference count on it */
1550
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1551
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
J
James Smart 已提交
1552
				     ELS_CMD_PLOGI);
1553 1554
	if (!elsiocb)
		return 1;
已提交
1555 1556 1557 1558 1559 1560

	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;
1561 1562
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
1563 1564 1565 1566 1567 1568 1569 1570
	sp = (struct serv_parm *) pcmd;

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

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

J
James Smart 已提交
1571 1572 1573 1574
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PLOGI:     did:x%x",
		did, 0, 0);

已提交
1575 1576
	phba->fc_stat.elsXmitPLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1577
	ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1578 1579

	if (ret == IOCB_ERROR) {
已提交
1580
		lpfc_els_free_iocb(phba, elsiocb);
1581
		return 1;
已提交
1582
	}
1583
	return 0;
已提交
1584 1585
}

1586
/**
1587
 * lpfc_cmpl_els_prli - Completion callback function for prli
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function for a Process Login
 * (PRLI) ELS command. The PRLI response IOCB status is checked for error
 * status. If there is error status reported, PRLI retry shall be attempted
 * by invoking the lpfc_els_retry() routine. Otherwise, the state
 * NLP_EVT_CMPL_PRLI is sent to the Discover State Machine (DSM) for this
 * ndlp to mark the PRLI completion.
 **/
已提交
1599
static void
J
James Smart 已提交
1600 1601
lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
1602
{
J
James Smart 已提交
1603 1604
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1605 1606 1607 1608 1609 1610 1611 1612 1613 1614
	IOCB_t *irsp;
	struct lpfc_sli *psli;
	struct lpfc_nodelist *ndlp;

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

	irsp = &(rspiocb->iocb);
	ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
J
James Smart 已提交
1615
	spin_lock_irq(shost->host_lock);
已提交
1616
	ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1617
	spin_unlock_irq(shost->host_lock);
已提交
1618

J
James Smart 已提交
1619 1620 1621 1622
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"PRLI cmpl:       status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		ndlp->nlp_DID);
已提交
1623
	/* PRLI completes to NPort <nlp_DID> */
1624 1625 1626 1627 1628
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0103 PRLI completes to NPort x%x "
			 "Data: x%x x%x x%x x%x\n",
			 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
			 irsp->ulpTimeout, vport->num_disc_nodes);
已提交
1629

J
James Smart 已提交
1630
	vport->fc_prli_sent--;
已提交
1631
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1632
	if (lpfc_els_chk_latt(vport))
已提交
1633 1634 1635 1636 1637 1638 1639 1640 1641
		goto out;

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			goto out;
		}
		/* PRLI failed */
1642 1643 1644 1645
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "2754 PRLI failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
1646
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1647
		if (lpfc_error_lost_link(irsp))
已提交
1648
			goto out;
1649
		else
J
James Smart 已提交
1650
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1651
						NLP_EVT_CMPL_PRLI);
1652
	} else
已提交
1653
		/* Good status, call state machine */
J
James Smart 已提交
1654
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1655
					NLP_EVT_CMPL_PRLI);
已提交
1656 1657 1658 1659 1660
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1661
/**
1662
 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681
 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a Process Login (PRLI) ELS command for the
 * @vport. The PRLI service parameters are set up in the payload of the
 * PRLI Request command and the pointer to lpfc_cmpl_els_prli() routine
 * is put to the IOCB completion callback func field before invoking the
 * routine lpfc_sli_issue_iocb() to send out PRLI command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the PRLI ELS command.
 *
 * Return code
 *   0 - successfully issued prli iocb command for @vport
 *   1 - failed to issue prli iocb command for @vport
 **/
已提交
1682
int
J
James Smart 已提交
1683
lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1684 1685
		    uint8_t retry)
{
J
James Smart 已提交
1686 1687
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba *phba = vport->phba;
已提交
1688 1689 1690 1691 1692 1693
	PRLI *npr;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

1694
	cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
J
James Smart 已提交
1695 1696
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_PRLI);
1697
	if (!elsiocb)
1698
		return 1;
已提交
1699 1700 1701 1702 1703

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

	/* For PRLI request, remainder of payload is service parameters */
1704
	memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
已提交
1705
	*((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
1706
	pcmd += sizeof(uint32_t);
已提交
1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725

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

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

J
James Smart 已提交
1726 1727 1728 1729
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PRLI:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
1730 1731
	phba->fc_stat.elsXmitPRLI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
J
James Smart 已提交
1732
	spin_lock_irq(shost->host_lock);
已提交
1733
	ndlp->nlp_flag |= NLP_PRLI_SND;
J
James Smart 已提交
1734
	spin_unlock_irq(shost->host_lock);
1735 1736
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
J
James Smart 已提交
1737
		spin_lock_irq(shost->host_lock);
已提交
1738
		ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1739
		spin_unlock_irq(shost->host_lock);
已提交
1740
		lpfc_els_free_iocb(phba, elsiocb);
1741
		return 1;
已提交
1742
	}
J
James Smart 已提交
1743
	vport->fc_prli_sent++;
1744
	return 0;
已提交
1745 1746
}

1747
/**
1748
 * lpfc_rscn_disc - Perform rscn discovery for a vport
1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine performs Registration State Change Notification (RSCN)
 * discovery for a @vport. If the @vport's node port recovery count is not
 * zero, it will invoke the lpfc_els_disc_plogi() to perform PLOGI for all
 * the nodes that need recovery. If none of the PLOGI were needed through
 * the lpfc_els_disc_plogi() routine, the lpfc_end_rscn() routine shall be
 * invoked to check and handle possible more RSCN came in during the period
 * of processing the current ones.
 **/
static void
lpfc_rscn_disc(struct lpfc_vport *vport)
{
	lpfc_can_disctmo(vport);

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

	lpfc_end_rscn(vport);
}

/**
1774
 * lpfc_adisc_done - Complete the adisc phase of discovery
1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793
 * @vport: pointer to lpfc_vport hba data structure that finished all ADISCs.
 *
 * This function is called when the final ADISC is completed during discovery.
 * This function handles clearing link attention or issuing reg_vpi depending
 * on whether npiv is enabled. This function also kicks off the PLOGI phase of
 * discovery.
 * This function is called with no locks held.
 **/
static void
lpfc_adisc_done(struct lpfc_vport *vport)
{
	struct Scsi_Host   *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba   *phba = vport->phba;

	/*
	 * For NPIV, cmpl_reg_vpi will set port_state to READY,
	 * and continue discovery.
	 */
	if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
1794 1795
	    !(vport->fc_flag & FC_RSCN_MODE) &&
	    (phba->sli_rev < LPFC_SLI_REV4)) {
1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824
		lpfc_issue_reg_vpi(phba, vport);
		return;
	}
	/*
	* For SLI2, we need to set port_state to READY
	* and continue discovery.
	*/
	if (vport->port_state < LPFC_VPORT_READY) {
		/* If we get here, there is nothing to ADISC */
		if (vport->port_type == LPFC_PHYSICAL_PORT)
			lpfc_issue_clear_la(phba, vport);
		if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) {
			vport->num_disc_nodes = 0;
			/* go thru NPR list, issue ELS PLOGIs */
			if (vport->fc_npr_cnt)
				lpfc_els_disc_plogi(vport);
			if (!vport->num_disc_nodes) {
				spin_lock_irq(shost->host_lock);
				vport->fc_flag &= ~FC_NDISC_ACTIVE;
				spin_unlock_irq(shost->host_lock);
				lpfc_can_disctmo(vport);
				lpfc_end_rscn(vport);
			}
		}
		vport->port_state = LPFC_VPORT_READY;
	} else
		lpfc_rscn_disc(vport);
}

1825
/**
1826
 * lpfc_more_adisc - Issue more adisc as needed
1827 1828 1829 1830 1831 1832 1833
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine determines whether there are more ndlps on a @vport
 * node list need to have Address Discover (ADISC) issued. If so, it will
 * invoke the lpfc_els_disc_adisc() routine to issue ADISC on the @vport's
 * remaining nodes which need to have ADISC sent.
 **/
1834
void
J
James Smart 已提交
1835
lpfc_more_adisc(struct lpfc_vport *vport)
已提交
1836 1837 1838
{
	int sentadisc;

J
James Smart 已提交
1839 1840
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1841
	/* Continue discovery with <num_disc_nodes> ADISCs to go */
1842 1843 1844 1845 1846
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0210 Continue discovery with %d ADISCs to go "
			 "Data: x%x x%x x%x\n",
			 vport->num_disc_nodes, vport->fc_adisc_cnt,
			 vport->fc_flag, vport->port_state);
已提交
1847
	/* Check to see if there are more ADISCs to be sent */
J
James Smart 已提交
1848 1849 1850 1851
	if (vport->fc_flag & FC_NLP_MORE) {
		lpfc_set_disctmo(vport);
		/* go thru NPR nodes and issue any remaining ELS ADISCs */
		sentadisc = lpfc_els_disc_adisc(vport);
已提交
1852
	}
1853 1854
	if (!vport->num_disc_nodes)
		lpfc_adisc_done(vport);
已提交
1855 1856 1857
	return;
}

1858
/**
1859
 * lpfc_cmpl_els_adisc - Completion callback function for adisc
1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion function for issuing the Address Discover
 * (ADISC) command. It first checks to see whether link went down during
 * the discovery process. If so, the node will be marked as node port
 * recovery for issuing discover IOCB by the link attention handler and
 * exit. Otherwise, the response status is checked. If error was reported
 * in the response status, the ADISC command shall be retried by invoking
 * the lpfc_els_retry() routine. Otherwise, if no error was reported in
 * the response status, the state machine is invoked to set transition
 * with respect to NLP_EVT_CMPL_ADISC event.
 **/
已提交
1874
static void
J
James Smart 已提交
1875 1876
lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1877
{
J
James Smart 已提交
1878 1879
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1880 1881
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
1882
	int  disc;
已提交
1883 1884 1885 1886 1887 1888 1889

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

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

J
James Smart 已提交
1890 1891 1892 1893 1894
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"ADISC cmpl:      status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		ndlp->nlp_DID);

已提交
1895 1896 1897
	/* Since ndlp can be freed in the disc state machine, note if this node
	 * is being used during discovery.
	 */
J
James Smart 已提交
1898
	spin_lock_irq(shost->host_lock);
已提交
1899
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1900
	ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
J
James Smart 已提交
1901
	spin_unlock_irq(shost->host_lock);
已提交
1902
	/* ADISC completes to NPort <nlp_DID> */
1903 1904 1905 1906 1907
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0104 ADISC completes to NPort x%x "
			 "Data: x%x x%x x%x x%x x%x\n",
			 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
			 irsp->ulpTimeout, disc, vport->num_disc_nodes);
已提交
1908
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1909 1910
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1911
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1912
		spin_unlock_irq(shost->host_lock);
已提交
1913 1914 1915 1916 1917 1918 1919 1920
		goto out;
	}

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			if (disc) {
J
James Smart 已提交
1921
				spin_lock_irq(shost->host_lock);
已提交
1922
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1923 1924
				spin_unlock_irq(shost->host_lock);
				lpfc_set_disctmo(vport);
已提交
1925 1926 1927 1928
			}
			goto out;
		}
		/* ADISC failed */
1929 1930 1931 1932
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "2755 ADISC failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
1933
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1934
		if (!lpfc_error_lost_link(irsp))
J
James Smart 已提交
1935
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
J
James Smart 已提交
1936
						NLP_EVT_CMPL_ADISC);
1937
	} else
已提交
1938
		/* Good status, call state machine */
J
James Smart 已提交
1939
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
已提交
1940 1941
					NLP_EVT_CMPL_ADISC);

1942 1943
	/* Check to see if there are more ADISCs to be sent */
	if (disc && vport->num_disc_nodes)
J
James Smart 已提交
1944
		lpfc_more_adisc(vport);
已提交
1945 1946 1947 1948 1949
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1950
/**
1951
 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
 * @vport: pointer to a virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues an Address Discover (ADISC) for an @ndlp on a
 * @vport. It prepares the payload of the ADISC ELS command, updates the
 * and states of the ndlp, and invokes the lpfc_sli_issue_iocb() routine
 * to issue the ADISC ELS command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the ADISC ELS command.
 *
 * Return code
 *   0 - successfully issued adisc
 *   1 - failed to issue adisc
 **/
已提交
1970
int
J
James Smart 已提交
1971
lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1972 1973
		     uint8_t retry)
{
J
James Smart 已提交
1974 1975
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
1976 1977 1978 1979 1980 1981
	ADISC *ap;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

1982
	cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
J
James Smart 已提交
1983 1984
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ADISC);
1985
	if (!elsiocb)
1986
		return 1;
已提交
1987 1988 1989 1990 1991 1992

	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;
1993
	pcmd += sizeof(uint32_t);
已提交
1994 1995 1996 1997

	/* Fill in ADISC payload */
	ap = (ADISC *) pcmd;
	ap->hardAL_PA = phba->fc_pref_ALPA;
1998 1999
	memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
	memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
J
James Smart 已提交
2000
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
2001

J
James Smart 已提交
2002 2003 2004 2005
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue ADISC:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2006 2007
	phba->fc_stat.elsXmitADISC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
J
James Smart 已提交
2008
	spin_lock_irq(shost->host_lock);
已提交
2009
	ndlp->nlp_flag |= NLP_ADISC_SND;
J
James Smart 已提交
2010
	spin_unlock_irq(shost->host_lock);
2011 2012
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
J
James Smart 已提交
2013
		spin_lock_irq(shost->host_lock);
已提交
2014
		ndlp->nlp_flag &= ~NLP_ADISC_SND;
J
James Smart 已提交
2015
		spin_unlock_irq(shost->host_lock);
已提交
2016
		lpfc_els_free_iocb(phba, elsiocb);
2017
		return 1;
已提交
2018
	}
2019
	return 0;
已提交
2020 2021
}

2022
/**
2023
 * lpfc_cmpl_els_logo - Completion callback function for logo
2024 2025 2026 2027 2028 2029 2030 2031 2032 2033
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion function for issuing the ELS Logout (LOGO)
 * command. If no error status was reported from the LOGO response, the
 * state machine of the associated ndlp shall be invoked for transition with
 * respect to NLP_EVT_CMPL_LOGO event. Otherwise, if error status was reported,
 * the lpfc_els_retry() routine will be invoked to retry the LOGO command.
 **/
已提交
2034
static void
J
James Smart 已提交
2035 2036
lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
2037
{
J
James Smart 已提交
2038 2039 2040
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_vport *vport = ndlp->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
2041 2042 2043 2044 2045 2046 2047 2048
	IOCB_t *irsp;
	struct lpfc_sli *psli;

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

	irsp = &(rspiocb->iocb);
J
James Smart 已提交
2049
	spin_lock_irq(shost->host_lock);
已提交
2050
	ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
2051
	spin_unlock_irq(shost->host_lock);
已提交
2052

J
James Smart 已提交
2053 2054 2055 2056
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"LOGO cmpl:       status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		ndlp->nlp_DID);
已提交
2057
	/* LOGO completes to NPort <nlp_DID> */
2058 2059 2060 2061 2062
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0105 LOGO completes to NPort x%x "
			 "Data: x%x x%x x%x x%x\n",
			 ndlp->nlp_DID, irsp->ulpStatus, irsp->un.ulpWord[4],
			 irsp->ulpTimeout, vport->num_disc_nodes);
已提交
2063
	/* Check to see if link went down during discovery */
J
James Smart 已提交
2064
	if (lpfc_els_chk_latt(vport))
已提交
2065 2066
		goto out;

2067 2068 2069 2070 2071 2072 2073 2074 2075
	if (ndlp->nlp_flag & NLP_TARGET_REMOVE) {
	        /* NLP_EVT_DEVICE_RM should unregister the RPI
		 * which should abort all outstanding IOs.
		 */
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
					NLP_EVT_DEVICE_RM);
		goto out;
	}

已提交
2076 2077
	if (irsp->ulpStatus) {
		/* Check for retry */
J
James Smart 已提交
2078
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
2079 2080 2081
			/* ELS command is being retried */
			goto out;
		/* LOGO failed */
2082 2083 2084 2085
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "2756 LOGO failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
2086
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
J
James Smart 已提交
2087
		if (lpfc_error_lost_link(irsp))
已提交
2088
			goto out;
J
James Smart 已提交
2089
		else
J
James Smart 已提交
2090
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2091
						NLP_EVT_CMPL_LOGO);
2092
	} else
2093 2094 2095
		/* Good status, call state machine.
		 * This will unregister the rpi if needed.
		 */
J
James Smart 已提交
2096
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2097
					NLP_EVT_CMPL_LOGO);
已提交
2098 2099 2100 2101 2102
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2103
/**
2104
 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122
 * @vport: pointer to a virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine constructs and issues an ELS Logout (LOGO) iocb command
 * to a remote node, referred by an @ndlp on a @vport. It constructs the
 * payload of the IOCB, properly sets up the @ndlp state, and invokes the
 * lpfc_sli_issue_iocb() routine to send out the LOGO ELS command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the LOGO ELS command.
 *
 * Return code
 *   0 - successfully issued logo
 *   1 - failed to issue logo
 **/
已提交
2123
int
J
James Smart 已提交
2124
lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
2125 2126
		    uint8_t retry)
{
J
James Smart 已提交
2127 2128
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
2129 2130 2131 2132
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;
2133
	int rc;
已提交
2134

2135 2136 2137 2138 2139 2140 2141
	spin_lock_irq(shost->host_lock);
	if (ndlp->nlp_flag & NLP_LOGO_SND) {
		spin_unlock_irq(shost->host_lock);
		return 0;
	}
	spin_unlock_irq(shost->host_lock);

2142
	cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
J
James Smart 已提交
2143 2144
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LOGO);
2145
	if (!elsiocb)
2146
		return 1;
已提交
2147 2148 2149 2150

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2151
	pcmd += sizeof(uint32_t);
已提交
2152 2153

	/* Fill in LOGO payload */
J
James Smart 已提交
2154
	*((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2155 2156
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
已提交
2157

J
James Smart 已提交
2158 2159 2160 2161
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue LOGO:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2162 2163
	phba->fc_stat.elsXmitLOGO++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
J
James Smart 已提交
2164
	spin_lock_irq(shost->host_lock);
已提交
2165
	ndlp->nlp_flag |= NLP_LOGO_SND;
J
James Smart 已提交
2166
	spin_unlock_irq(shost->host_lock);
2167
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2168 2169

	if (rc == IOCB_ERROR) {
J
James Smart 已提交
2170
		spin_lock_irq(shost->host_lock);
已提交
2171
		ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
2172
		spin_unlock_irq(shost->host_lock);
已提交
2173
		lpfc_els_free_iocb(phba, elsiocb);
2174
		return 1;
已提交
2175
	}
2176
	return 0;
已提交
2177 2178
}

2179
/**
2180
 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is a generic completion callback function for ELS commands.
 * Specifically, it is the callback function which does not need to perform
 * any command specific operations. It is currently used by the ELS command
 * issuing routines for the ELS State Change  Request (SCR),
 * lpfc_issue_els_scr(), and the ELS Fibre Channel Address Resolution
 * Protocol Response (FARPR) routine, lpfc_issue_els_farpr(). Other than
 * certain debug loggings, this callback function simply invokes the
 * lpfc_els_chk_latt() routine to check whether link went down during the
 * discovery process.
 **/
已提交
2195
static void
J
James Smart 已提交
2196 2197
lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_iocbq *rspiocb)
已提交
2198
{
J
James Smart 已提交
2199
	struct lpfc_vport *vport = cmdiocb->vport;
已提交
2200 2201 2202 2203
	IOCB_t *irsp;

	irsp = &rspiocb->iocb;

J
James Smart 已提交
2204 2205 2206 2207
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"ELS cmd cmpl:    status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4],
		irsp->un.elsreq64.remoteID);
已提交
2208
	/* ELS cmd tag <ulpIoTag> completes */
2209 2210 2211 2212
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0106 ELS cmd tag x%x completes Data: x%x x%x x%x\n",
			 irsp->ulpIoTag, irsp->ulpStatus,
			 irsp->un.ulpWord[4], irsp->ulpTimeout);
已提交
2213
	/* Check to see if link went down during discovery */
J
James Smart 已提交
2214
	lpfc_els_chk_latt(vport);
已提交
2215 2216 2217 2218
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2219
/**
2220
 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240
 * @vport: pointer to a host virtual N_Port data structure.
 * @nportid: N_Port identifier to the remote node.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a State Change Request (SCR) to a fabric node
 * on a @vport. The remote node @nportid is passed into the function. It
 * first search the @vport node list to find the matching ndlp. If no such
 * ndlp is found, a new ndlp shall be created for this (SCR) purpose. An
 * IOCB is allocated, payload prepared, and the lpfc_sli_issue_iocb()
 * routine is invoked to send the SCR IOCB.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the SCR ELS command.
 *
 * Return code
 *   0 - Successfully issued scr command
 *   1 - Failed to issue scr command
 **/
已提交
2241
int
J
James Smart 已提交
2242
lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2243
{
J
James Smart 已提交
2244
	struct lpfc_hba  *phba = vport->phba;
已提交
2245 2246 2247 2248 2249 2250 2251 2252
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
2253
	cmdsize = (sizeof(uint32_t) + sizeof(SCR));
已提交
2254

2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266
	ndlp = lpfc_findnode_did(vport, nportid);
	if (!ndlp) {
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 1;
		lpfc_nlp_init(vport, ndlp, nportid);
		lpfc_enqueue_node(vport, ndlp);
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp)
			return 1;
	}
J
James Smart 已提交
2267 2268 2269

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_SCR);
已提交
2270

2271
	if (!elsiocb) {
2272 2273 2274
		/* This will trigger the release of the node just
		 * allocated
		 */
2275
		lpfc_nlp_put(ndlp);
2276
		return 1;
已提交
2277 2278 2279 2280 2281 2282
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2283
	pcmd += sizeof(uint32_t);
已提交
2284 2285

	/* For SCR, remainder of payload is SCR parameter page */
2286
	memset(pcmd, 0, sizeof(SCR));
已提交
2287 2288
	((SCR *) pcmd)->Function = SCR_FUNC_FULL;

J
James Smart 已提交
2289 2290 2291 2292
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue SCR:       did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2293 2294
	phba->fc_stat.elsXmitSCR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2295 2296
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
2297 2298 2299 2300
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the rlease of
		 * the node.
		 */
2301
		lpfc_nlp_put(ndlp);
已提交
2302
		lpfc_els_free_iocb(phba, elsiocb);
2303
		return 1;
已提交
2304
	}
2305 2306 2307
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of node.
	 */
2308
	lpfc_nlp_put(ndlp);
2309
	return 0;
已提交
2310 2311
}

2312
/**
2313
 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333
 * @vport: pointer to a host virtual N_Port data structure.
 * @nportid: N_Port identifier to the remote node.
 * @retry: number of retries to the command IOCB.
 *
 * This routine issues a Fibre Channel Address Resolution Response
 * (FARPR) to a node on a vport. The remote node N_Port identifier (@nportid)
 * is passed into the function. It first search the @vport node list to find
 * the matching ndlp. If no such ndlp is found, a new ndlp shall be created
 * for this (FARPR) purpose. An IOCB is allocated, payload prepared, and the
 * lpfc_sli_issue_iocb() routine is invoked to send the FARPR ELS command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the PARPR ELS command.
 *
 * Return code
 *   0 - Successfully issued farpr command
 *   1 - Failed to issue farpr command
 **/
已提交
2334
static int
J
James Smart 已提交
2335
lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2336
{
J
James Smart 已提交
2337
	struct lpfc_hba  *phba = vport->phba;
已提交
2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	FARP *fp;
	uint8_t *pcmd;
	uint32_t *lp;
	uint16_t cmdsize;
	struct lpfc_nodelist *ondlp;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
2349
	cmdsize = (sizeof(uint32_t) + sizeof(FARP));
已提交
2350

2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362
	ndlp = lpfc_findnode_did(vport, nportid);
	if (!ndlp) {
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 1;
		lpfc_nlp_init(vport, ndlp, nportid);
		lpfc_enqueue_node(vport, ndlp);
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp)
			return 1;
	}
J
James Smart 已提交
2363 2364 2365

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_RNID);
2366
	if (!elsiocb) {
2367 2368 2369
		/* This will trigger the release of the node just
		 * allocated
		 */
2370
		lpfc_nlp_put(ndlp);
2371
		return 1;
已提交
2372 2373 2374 2375 2376 2377
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2378
	pcmd += sizeof(uint32_t);
已提交
2379 2380 2381

	/* Fill in FARPR payload */
	fp = (FARP *) (pcmd);
2382
	memset(fp, 0, sizeof(FARP));
已提交
2383 2384
	lp = (uint32_t *) pcmd;
	*lp++ = be32_to_cpu(nportid);
J
James Smart 已提交
2385
	*lp++ = be32_to_cpu(vport->fc_myDID);
已提交
2386 2387 2388
	fp->Rflags = 0;
	fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);

2389 2390
	memcpy(&fp->RportName, &vport->fc_portname, sizeof(struct lpfc_name));
	memcpy(&fp->RnodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
J
James Smart 已提交
2391
	ondlp = lpfc_findnode_did(vport, nportid);
2392
	if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
已提交
2393
		memcpy(&fp->OportName, &ondlp->nlp_portname,
2394
		       sizeof(struct lpfc_name));
已提交
2395
		memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2396
		       sizeof(struct lpfc_name));
已提交
2397 2398
	}

J
James Smart 已提交
2399 2400 2401 2402
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FARPR:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2403 2404
	phba->fc_stat.elsXmitFARPR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2405 2406
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
2407 2408 2409 2410
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the release of
		 * the node.
		 */
2411
		lpfc_nlp_put(ndlp);
已提交
2412
		lpfc_els_free_iocb(phba, elsiocb);
2413
		return 1;
已提交
2414
	}
2415 2416 2417
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of the node.
	 */
2418
	lpfc_nlp_put(ndlp);
2419
	return 0;
已提交
2420 2421
}

2422
/**
2423
 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2424 2425 2426 2427 2428 2429 2430 2431 2432 2433
 * @vport: pointer to a host virtual N_Port data structure.
 * @nlp: pointer to a node-list data structure.
 *
 * This routine cancels the timer with a delayed IOCB-command retry for
 * a @vport's @ndlp. It stops the timer for the delayed function retrial and
 * removes the ELS retry event if it presents. In addition, if the
 * NLP_NPR_2B_DISC bit is set in the @nlp's nlp_flag bitmap, ADISC IOCB
 * commands are sent for the @vport's nodes that require issuing discovery
 * ADISC.
 **/
2434
void
J
James Smart 已提交
2435
lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2436
{
J
James Smart 已提交
2437
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2438
	struct lpfc_work_evt *evtp;
J
James Smart 已提交
2439

2440 2441
	if (!(nlp->nlp_flag & NLP_DELAY_TMO))
		return;
J
James Smart 已提交
2442
	spin_lock_irq(shost->host_lock);
2443
	nlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2444
	spin_unlock_irq(shost->host_lock);
2445 2446
	del_timer_sync(&nlp->nlp_delayfunc);
	nlp->nlp_last_elscmd = 0;
2447
	if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2448
		list_del_init(&nlp->els_retry_evt.evt_listp);
2449 2450 2451 2452
		/* Decrement nlp reference count held for the delayed retry */
		evtp = &nlp->els_retry_evt;
		lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
	}
2453
	if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
J
James Smart 已提交
2454
		spin_lock_irq(shost->host_lock);
2455
		nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
2456 2457
		spin_unlock_irq(shost->host_lock);
		if (vport->num_disc_nodes) {
2458 2459 2460 2461 2462 2463
			if (vport->port_state < LPFC_VPORT_READY) {
				/* Check if there are more ADISCs to be sent */
				lpfc_more_adisc(vport);
			} else {
				/* Check if there are more PLOGIs to be sent */
				lpfc_more_plogi(vport);
2464 2465 2466 2467 2468 2469 2470
				if (vport->num_disc_nodes == 0) {
					spin_lock_irq(shost->host_lock);
					vport->fc_flag &= ~FC_NDISC_ACTIVE;
					spin_unlock_irq(shost->host_lock);
					lpfc_can_disctmo(vport);
					lpfc_end_rscn(vport);
				}
2471 2472 2473 2474 2475 2476
			}
		}
	}
	return;
}

2477
/**
2478
 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490
 * @ptr: holder for the pointer to the timer function associated data (ndlp).
 *
 * This routine is invoked by the ndlp delayed-function timer to check
 * whether there is any pending ELS retry event(s) with the node. If not, it
 * simply returns. Otherwise, if there is at least one ELS delayed event, it
 * adds the delayed events to the HBA work list and invokes the
 * lpfc_worker_wake_up() routine to wake up worker thread to process the
 * event. Note that lpfc_nlp_get() is called before posting the event to
 * the work list to hold reference count of ndlp so that it guarantees the
 * reference to ndlp will still be available when the worker thread gets
 * to the event associated with the ndlp.
 **/
已提交
2491 2492 2493
void
lpfc_els_retry_delay(unsigned long ptr)
{
J
James Smart 已提交
2494 2495 2496
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
	struct lpfc_vport *vport = ndlp->vport;
	struct lpfc_hba   *phba = vport->phba;
2497
	unsigned long flags;
J
James Smart 已提交
2498
	struct lpfc_work_evt  *evtp = &ndlp->els_retry_evt;
已提交
2499

2500
	spin_lock_irqsave(&phba->hbalock, flags);
已提交
2501
	if (!list_empty(&evtp->evt_listp)) {
2502
		spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2503 2504 2505
		return;
	}

2506 2507 2508 2509
	/* We need to hold the node by incrementing the reference
	 * count until the queued work is done
	 */
	evtp->evt_arg1  = lpfc_nlp_get(ndlp);
2510 2511 2512
	if (evtp->evt_arg1) {
		evtp->evt = LPFC_EVT_ELS_RETRY;
		list_add_tail(&evtp->evt_listp, &phba->work_list);
2513
		lpfc_worker_wake_up(phba);
2514
	}
2515
	spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2516 2517 2518
	return;
}

2519
/**
2520
 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2521 2522 2523 2524 2525 2526 2527
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine is the worker-thread handler for processing the @ndlp delayed
 * event(s), posted by the lpfc_els_retry_delay() routine. It simply retrieves
 * the last ELS command from the associated ndlp and invokes the proper ELS
 * function according to the delayed ELS command to retry the command.
 **/
已提交
2528 2529 2530
void
lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
2531 2532 2533
	struct lpfc_vport *vport = ndlp->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	uint32_t cmd, did, retry;
已提交
2534

J
James Smart 已提交
2535
	spin_lock_irq(shost->host_lock);
2536 2537 2538
	did = ndlp->nlp_DID;
	cmd = ndlp->nlp_last_elscmd;
	ndlp->nlp_last_elscmd = 0;
已提交
2539 2540

	if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
J
James Smart 已提交
2541
		spin_unlock_irq(shost->host_lock);
已提交
2542 2543 2544 2545
		return;
	}

	ndlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2546
	spin_unlock_irq(shost->host_lock);
2547 2548 2549 2550 2551 2552
	/*
	 * 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
2553
	retry = ndlp->nlp_retry;
2554
	ndlp->nlp_retry = 0;
已提交
2555 2556 2557

	switch (cmd) {
	case ELS_CMD_FLOGI:
J
James Smart 已提交
2558
		lpfc_issue_els_flogi(vport, ndlp, retry);
已提交
2559 2560
		break;
	case ELS_CMD_PLOGI:
J
James Smart 已提交
2561
		if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2562
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2563
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2564
		}
已提交
2565 2566
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
2567
		if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2568
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2569
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2570
		}
已提交
2571 2572
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
2573
		if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2574
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2575
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2576
		}
已提交
2577 2578
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
2579
		if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2580
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2581
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2582
		}
已提交
2583
		break;
2584 2585 2586
	case ELS_CMD_FDISC:
		lpfc_issue_els_fdisc(vport, ndlp, retry);
		break;
已提交
2587 2588 2589 2590
	}
	return;
}

2591
/**
2592
 * lpfc_els_retry - Make retry decision on an els command iocb
2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine makes a retry decision on an ELS command IOCB, which has
 * failed. The following ELS IOCBs use this function for retrying the command
 * when previously issued command responsed with error status: FLOGI, PLOGI,
 * PRLI, ADISC, LOGO, and FDISC. Based on the ELS command type and the
 * returned error status, it makes the decision whether a retry shall be
 * issued for the command, and whether a retry shall be made immediately or
 * delayed. In the former case, the corresponding ELS command issuing-function
 * is called to retry the command. In the later case, the ELS command shall
 * be posted to the ndlp delayed event and delayed function timer set to the
 * ndlp for the delayed command issusing.
 *
 * Return code
 *   0 - No retry of els command is made
 *   1 - Immediate or delayed retry of els command is made
 **/
已提交
2612
static int
J
James Smart 已提交
2613 2614
lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
	       struct lpfc_iocbq *rspiocb)
已提交
2615
{
J
James Smart 已提交
2616 2617 2618 2619 2620
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
已提交
2621 2622
	uint32_t *elscmd;
	struct ls_rjt stat;
J
James Smart 已提交
2623
	int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2624
	int logerr = 0;
J
James Smart 已提交
2625
	uint32_t cmd = 0;
2626
	uint32_t did;
已提交
2627

2628

已提交
2629 2630 2631 2632 2633 2634 2635 2636 2637
	/* Note: context2 may be 0 for internal driver abort
	 * of delays ELS command.
	 */

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

2638
	if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2639 2640 2641 2642
		did = ndlp->nlp_DID;
	else {
		/* We should only hit this case for retrying PLOGI */
		did = irsp->un.elsreq64.remoteID;
J
James Smart 已提交
2643
		ndlp = lpfc_findnode_did(vport, did);
2644 2645
		if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
		    && (cmd != ELS_CMD_PLOGI))
2646 2647 2648
			return 1;
	}

J
James Smart 已提交
2649 2650 2651 2652
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Retry ELS:       wd7:x%x wd4:x%x did:x%x",
		*(((uint32_t *) irsp) + 7), irsp->un.ulpWord[4], ndlp->nlp_DID);

已提交
2653 2654 2655 2656 2657 2658 2659 2660
	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:
2661 2662 2663 2664 2665 2666 2667 2668 2669
			if (cmd == ELS_CMD_FLOGI) {
				if (PCI_DEVICE_ID_HORNET ==
					phba->pcidev->device) {
					phba->fc_topology = TOPOLOGY_LOOP;
					phba->pport->fc_myDID = 0;
					phba->alpa_map[0] = 0;
					phba->alpa_map[1] = 0;
				}
			}
J
James Smart 已提交
2670
			if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
2671
				delay = 1000;
已提交
2672 2673 2674
			retry = 1;
			break;

2675
		case IOERR_ILLEGAL_COMMAND:
2676 2677 2678 2679 2680 2681 2682 2683 2684
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					 "0124 Retry illegal cmd x%x "
					 "retry:x%x delay:x%x\n",
					 cmd, cmdiocb->retry, delay);
			retry = 1;
			/* All command's retry policy */
			maxretry = 8;
			if (cmdiocb->retry > 2)
				delay = 1000;
2685 2686
			break;

已提交
2687
		case IOERR_NO_RESOURCES:
2688
			logerr = 1; /* HBA out of resources */
J
James Smart 已提交
2689 2690 2691 2692 2693 2694 2695
			retry = 1;
			if (cmdiocb->retry > 100)
				delay = 100;
			maxretry = 250;
			break;

		case IOERR_ILLEGAL_FRAME:
2696
			delay = 100;
已提交
2697 2698 2699
			retry = 1;
			break;

J
James Smart 已提交
2700
		case IOERR_SEQUENCE_TIMEOUT:
已提交
2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716
		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:
2717
		logerr = 1; /* Fabric / Remote NPort out of resources */
已提交
2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730
		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) {
2731
					delay = 1000;
已提交
2732 2733 2734 2735 2736 2737
					maxretry = 48;
				}
				retry = 1;
				break;
			}
			if (cmd == ELS_CMD_PLOGI) {
2738
				delay = 1000;
已提交
2739 2740 2741 2742
				maxretry = lpfc_max_els_tries + 1;
				retry = 1;
				break;
			}
2743 2744 2745
			if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
			  (cmd == ELS_CMD_FDISC) &&
			  (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
2746 2747 2748 2749
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
						 "0125 FDISC Failed (x%x). "
						 "Fabric out of resources\n",
						 stat.un.lsRjtError);
2750 2751 2752
				lpfc_vport_set_state(vport,
						     FC_VPORT_NO_FABRIC_RSCS);
			}
已提交
2753 2754 2755
			break;

		case LSRJT_LOGICAL_BSY:
J
James Smart 已提交
2756 2757
			if ((cmd == ELS_CMD_PLOGI) ||
			    (cmd == ELS_CMD_PRLI)) {
2758
				delay = 1000;
已提交
2759
				maxretry = 48;
2760
			} else if (cmd == ELS_CMD_FDISC) {
2761 2762 2763 2764
				/* FDISC retry policy */
				maxretry = 48;
				if (cmdiocb->retry >= 32)
					delay = 1000;
已提交
2765 2766 2767
			}
			retry = 1;
			break;
2768 2769

		case LSRJT_LOGICAL_ERR:
2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780
			/* There are some cases where switches return this
			 * error when they are not ready and should be returning
			 * Logical Busy. We should delay every time.
			 */
			if (cmd == ELS_CMD_FDISC &&
			    stat.un.b.lsRjtRsnCodeExp == LSEXP_PORT_LOGIN_REQ) {
				maxretry = 3;
				delay = 1000;
				retry = 1;
				break;
			}
2781 2782 2783 2784 2785 2786
		case LSRJT_PROTOCOL_ERR:
			if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
			  (cmd == ELS_CMD_FDISC) &&
			  ((stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_PNAME) ||
			  (stat.un.b.lsRjtRsnCodeExp == LSEXP_INVALID_NPORT_ID))
			  ) {
2787
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2788
						 "0122 FDISC Failed (x%x). "
2789 2790
						 "Fabric Detected Bad WWN\n",
						 stat.un.lsRjtError);
2791 2792 2793 2794
				lpfc_vport_set_state(vport,
						     FC_VPORT_FABRIC_REJ_WWN);
			}
			break;
已提交
2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805
		}
		break;

	case IOSTAT_INTERMED_RSP:
	case IOSTAT_BA_RJT:
		break;

	default:
		break;
	}

2806
	if (did == FDMI_DID)
已提交
2807 2808
		retry = 1;

2809
	if (((cmd == ELS_CMD_FLOGI) || (cmd == ELS_CMD_FDISC)) &&
2810 2811
	    (phba->fc_topology != TOPOLOGY_LOOP) &&
	    !lpfc_error_lost_link(irsp)) {
2812 2813
		/* FLOGI retry policy */
		retry = 1;
2814 2815 2816 2817 2818
		/* retry forever */
		maxretry = 0;
		if (cmdiocb->retry >= 100)
			delay = 5000;
		else if (cmdiocb->retry >= 32)
2819 2820 2821
			delay = 1000;
	}

2822 2823
	cmdiocb->retry++;
	if (maxretry && (cmdiocb->retry >= maxretry)) {
已提交
2824 2825 2826 2827
		phba->fc_stat.elsRetryExceeded++;
		retry = 0;
	}

2828 2829 2830
	if ((vport->load_flag & FC_UNLOADING) != 0)
		retry = 0;

已提交
2831 2832 2833
	if (retry) {

		/* Retry ELS command <elsCmd> to remote NPORT <did> */
2834 2835 2836 2837
		lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
				 "0107 Retry ELS command x%x to remote "
				 "NPORT x%x Data: x%x x%x\n",
				 cmd, did, cmdiocb->retry, delay);
已提交
2838

J
James Smart 已提交
2839 2840 2841 2842 2843
		if (((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_ADISC)) &&
			((irsp->ulpStatus != IOSTAT_LOCAL_REJECT) ||
			((irsp->un.ulpWord[4] & 0xff) != IOERR_NO_RESOURCES))) {
			/* Don't reset timer for no resources */

已提交
2844
			/* If discovery / RSCN timer is running, reset it */
J
James Smart 已提交
2845
			if (timer_pending(&vport->fc_disctmo) ||
2846
			    (vport->fc_flag & FC_RSCN_MODE))
J
James Smart 已提交
2847
				lpfc_set_disctmo(vport);
已提交
2848 2849 2850
		}

		phba->fc_stat.elsXmitRetry++;
2851
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
已提交
2852 2853 2854
			phba->fc_stat.elsDelayRetry++;
			ndlp->nlp_retry = cmdiocb->retry;

2855 2856 2857
			/* delay is specified in milliseconds */
			mod_timer(&ndlp->nlp_delayfunc,
				jiffies + msecs_to_jiffies(delay));
J
James Smart 已提交
2858
			spin_lock_irq(shost->host_lock);
已提交
2859
			ndlp->nlp_flag |= NLP_DELAY_TMO;
J
James Smart 已提交
2860
			spin_unlock_irq(shost->host_lock);
已提交
2861

2862
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2863 2864 2865 2866 2867 2868
			if (cmd == ELS_CMD_PRLI)
				lpfc_nlp_set_state(vport, ndlp,
					NLP_STE_REG_LOGIN_ISSUE);
			else
				lpfc_nlp_set_state(vport, ndlp,
					NLP_STE_NPR_NODE);
已提交
2869 2870
			ndlp->nlp_last_elscmd = cmd;

2871
			return 1;
已提交
2872 2873 2874
		}
		switch (cmd) {
		case ELS_CMD_FLOGI:
J
James Smart 已提交
2875
			lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
2876
			return 1;
2877 2878 2879
		case ELS_CMD_FDISC:
			lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
			return 1;
已提交
2880
		case ELS_CMD_PLOGI:
2881
			if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2882
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2883
				lpfc_nlp_set_state(vport, ndlp,
2884
						   NLP_STE_PLOGI_ISSUE);
2885
			}
J
James Smart 已提交
2886
			lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
2887
			return 1;
已提交
2888
		case ELS_CMD_ADISC:
2889
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2890 2891
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
2892
			return 1;
已提交
2893
		case ELS_CMD_PRLI:
2894
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2895 2896
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
			lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
2897
			return 1;
已提交
2898
		case ELS_CMD_LOGO:
2899
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2900 2901
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
			lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
2902
			return 1;
已提交
2903 2904 2905
		}
	}
	/* No retry ELS command <elsCmd> to remote NPORT <did> */
2906 2907 2908 2909 2910 2911 2912 2913 2914
	if (logerr) {
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
			 "0137 No retry ELS command x%x to remote "
			 "NPORT x%x: Out of Resources: Error:x%x/%x\n",
			 cmd, did, irsp->ulpStatus,
			 irsp->un.ulpWord[4]);
	}
	else {
		lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
2915 2916 2917 2918
			 "0108 No retry ELS command x%x to remote "
			 "NPORT x%x Retried:%d Error:x%x/%x\n",
			 cmd, did, cmdiocb->retry, irsp->ulpStatus,
			 irsp->un.ulpWord[4]);
2919
	}
2920
	return 0;
已提交
2921 2922
}

2923
/**
2924
 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936
 * @phba: pointer to lpfc hba data structure.
 * @buf_ptr1: pointer to the lpfc DMA buffer data structure.
 *
 * This routine releases the lpfc DMA (Direct Memory Access) buffer(s)
 * associated with a command IOCB back to the lpfc DMA buffer pool. It first
 * checks to see whether there is a lpfc DMA buffer associated with the
 * response of the command IOCB. If so, it will be released before releasing
 * the lpfc DMA buffer associated with the IOCB itself.
 *
 * Return code
 *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
 **/
2937
static int
2938 2939 2940 2941
lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
{
	struct lpfc_dmabuf *buf_ptr;

2942
	/* Free the response before processing the command. */
2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954
	if (!list_empty(&buf_ptr1->list)) {
		list_remove_head(&buf_ptr1->list, buf_ptr,
				 struct lpfc_dmabuf,
				 list);
		lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
		kfree(buf_ptr);
	}
	lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
	kfree(buf_ptr1);
	return 0;
}

2955
/**
2956
 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
2957 2958 2959 2960 2961 2962 2963 2964 2965 2966
 * @phba: pointer to lpfc hba data structure.
 * @buf_ptr: pointer to the lpfc dma buffer data structure.
 *
 * This routine releases the lpfc Direct Memory Access (DMA) buffer
 * associated with a Buffer Pointer List (BPL) back to the lpfc DMA buffer
 * pool.
 *
 * Return code
 *   0 - Successfully released lpfc DMA buffer (currently, always return 0)
 **/
2967
static int
2968 2969 2970 2971 2972 2973 2974
lpfc_els_free_bpl(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr)
{
	lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
	kfree(buf_ptr);
	return 0;
}

2975
/**
2976
 * lpfc_els_free_iocb - Free a command iocb and its associated resources
2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001
 * @phba: pointer to lpfc hba data structure.
 * @elsiocb: pointer to lpfc els command iocb data structure.
 *
 * This routine frees a command IOCB and its associated resources. The
 * command IOCB data structure contains the reference to various associated
 * resources, these fields must be set to NULL if the associated reference
 * not present:
 *   context1 - reference to ndlp
 *   context2 - reference to cmd
 *   context2->next - reference to rsp
 *   context3 - reference to bpl
 *
 * It first properly decrements the reference count held on ndlp for the
 * IOCB completion callback function. If LPFC_DELAY_MEM_FREE flag is not
 * set, it invokes the lpfc_els_free_data() routine to release the Direct
 * Memory Access (DMA) buffers associated with the IOCB. Otherwise, it
 * adds the DMA buffer the @phba data structure for the delayed release.
 * If reference to the Buffer Pointer List (BPL) is present, the
 * lpfc_els_free_bpl() routine is invoked to release the DMA memory
 * associated with BPL. Finally, the lpfc_sli_release_iocbq() routine is
 * invoked to release the IOCB data structure back to @phba IOCBQ list.
 *
 * Return code
 *   0 - Success (currently, always return 0)
 **/
已提交
3002
int
3003
lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
已提交
3004 3005
{
	struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
3006 3007 3008 3009 3010 3011
	struct lpfc_nodelist *ndlp;

	ndlp = (struct lpfc_nodelist *)elsiocb->context1;
	if (ndlp) {
		if (ndlp->nlp_flag & NLP_DEFER_RM) {
			lpfc_nlp_put(ndlp);
已提交
3012

3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024
			/* If the ndlp is not being used by another discovery
			 * thread, free it.
			 */
			if (!lpfc_nlp_not_used(ndlp)) {
				/* If ndlp is being used by another discovery
				 * thread, just clear NLP_DEFER_RM
				 */
				ndlp->nlp_flag &= ~NLP_DEFER_RM;
			}
		}
		else
			lpfc_nlp_put(ndlp);
3025 3026
		elsiocb->context1 = NULL;
	}
已提交
3027 3028
	/* context2  = cmd,  context2->next = rsp, context3 = bpl */
	if (elsiocb->context2) {
3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057
		if (elsiocb->iocb_flag & LPFC_DELAY_MEM_FREE) {
			/* Firmware could still be in progress of DMAing
			 * payload, so don't free data buffer till after
			 * a hbeat.
			 */
			elsiocb->iocb_flag &= ~LPFC_DELAY_MEM_FREE;
			buf_ptr = elsiocb->context2;
			elsiocb->context2 = NULL;
			if (buf_ptr) {
				buf_ptr1 = NULL;
				spin_lock_irq(&phba->hbalock);
				if (!list_empty(&buf_ptr->list)) {
					list_remove_head(&buf_ptr->list,
						buf_ptr1, struct lpfc_dmabuf,
						list);
					INIT_LIST_HEAD(&buf_ptr1->list);
					list_add_tail(&buf_ptr1->list,
						&phba->elsbuf);
					phba->elsbuf_cnt++;
				}
				INIT_LIST_HEAD(&buf_ptr->list);
				list_add_tail(&buf_ptr->list, &phba->elsbuf);
				phba->elsbuf_cnt++;
				spin_unlock_irq(&phba->hbalock);
			}
		} else {
			buf_ptr1 = (struct lpfc_dmabuf *) elsiocb->context2;
			lpfc_els_free_data(phba, buf_ptr1);
		}
已提交
3058 3059 3060 3061
	}

	if (elsiocb->context3) {
		buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
3062
		lpfc_els_free_bpl(phba, buf_ptr);
已提交
3063
	}
3064
	lpfc_sli_release_iocbq(phba, elsiocb);
已提交
3065 3066 3067
	return 0;
}

3068
/**
3069
 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function to the Logout (LOGO)
 * Accept (ACC) Response ELS command. This routine is invoked to indicate
 * the completion of the LOGO process. It invokes the lpfc_nlp_not_used() to
 * release the ndlp if it has the last reference remaining (reference count
 * is 1). If succeeded (meaning ndlp released), it sets the IOCB context1
 * field to NULL to inform the following lpfc_els_free_iocb() routine no
 * ndlp reference count needs to be decremented. Otherwise, the ndlp
 * reference use-count shall be decremented by the lpfc_els_free_iocb()
 * routine. Finally, the lpfc_els_free_iocb() is invoked to release the
 * IOCB data structure.
 **/
已提交
3085
static void
J
James Smart 已提交
3086 3087
lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		       struct lpfc_iocbq *rspiocb)
已提交
3088
{
J
James Smart 已提交
3089 3090
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_vport *vport = cmdiocb->vport;
J
James Smart 已提交
3091 3092 3093 3094 3095 3096
	IOCB_t *irsp;

	irsp = &rspiocb->iocb;
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"ACC LOGO cmpl:   status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4], ndlp->nlp_DID);
已提交
3097
	/* ACC to LOGO completes to NPort <nlp_DID> */
3098 3099 3100 3101 3102
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0109 ACC to LOGO completes to NPort x%x "
			 "Data: x%x x%x x%x\n",
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
3103 3104 3105 3106 3107 3108 3109 3110

	if (ndlp->nlp_state == NLP_STE_NPR_NODE) {
		/* NPort Recovery mode or node is just allocated */
		if (!lpfc_nlp_not_used(ndlp)) {
			/* If the ndlp is being used by another discovery
			 * thread, just unregister the RPI.
			 */
			lpfc_unreg_rpi(vport, ndlp);
3111 3112 3113 3114 3115
		} else {
			/* Indicate the node has already released, should
			 * not reference to it from within lpfc_els_free_iocb.
			 */
			cmdiocb->context1 = NULL;
3116
		}
已提交
3117 3118 3119 3120 3121
	}
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

3122
/**
3123
 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134
 * @phba: pointer to lpfc hba data structure.
 * @pmb: pointer to the driver internal queue element for mailbox command.
 *
 * This routine is the completion callback function for unregister default
 * RPI (Remote Port Index) mailbox command to the @phba. It simply releases
 * the associated lpfc Direct Memory Access (DMA) buffer back to the pool and
 * decrements the ndlp reference count held for this completion callback
 * function. After that, it invokes the lpfc_nlp_not_used() to check
 * whether there is only one reference left on the ndlp. If so, it will
 * perform one more decrement and trigger the release of the ndlp.
 **/
J
James Smart 已提交
3135 3136 3137 3138 3139 3140
void
lpfc_mbx_cmpl_dflt_rpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
	struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1);
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;

3141 3142 3143 3144 3145 3146 3147 3148
	/*
	 * This routine is used to register and unregister in previous SLI
	 * modes.
	 */
	if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
	    (phba->sli_rev == LPFC_SLI_REV4))
		lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);

J
James Smart 已提交
3149 3150 3151 3152
	pmb->context1 = NULL;
	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	kfree(mp);
	mempool_free(pmb, phba->mbox_mem_pool);
3153
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3154 3155 3156 3157 3158 3159 3160
		lpfc_nlp_put(ndlp);
		/* This is the end of the default RPI cleanup logic for this
		 * ndlp. If no other discovery threads are using this ndlp.
		 * we should free all resources associated with it.
		 */
		lpfc_nlp_not_used(ndlp);
	}
3161

J
James Smart 已提交
3162 3163 3164
	return;
}

3165
/**
3166
 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function for ELS Response IOCB
 * command. In normal case, this callback function just properly sets the
 * nlp_flag bitmap in the ndlp data structure, if the mbox command reference
 * field in the command IOCB is not NULL, the referred mailbox command will
 * be send out, and then invokes the lpfc_els_free_iocb() routine to release
 * the IOCB. Under error conditions, such as when a LS_RJT is returned or a
 * link down event occurred during the discovery, the lpfc_nlp_not_used()
 * routine shall be invoked trying to release the ndlp if no other threads
 * are currently referring it.
 **/
已提交
3181
static void
J
James Smart 已提交
3182
lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3183
		  struct lpfc_iocbq *rspiocb)
已提交
3184
{
J
James Smart 已提交
3185 3186 3187
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_vport *vport = ndlp ? ndlp->vport : NULL;
	struct Scsi_Host  *shost = vport ? lpfc_shost_from_vport(vport) : NULL;
3188 3189
	IOCB_t  *irsp;
	uint8_t *pcmd;
已提交
3190
	LPFC_MBOXQ_t *mbox = NULL;
J
James Smart 已提交
3191
	struct lpfc_dmabuf *mp = NULL;
3192
	uint32_t ls_rjt = 0;
已提交
3193

J
James Smart 已提交
3194 3195
	irsp = &rspiocb->iocb;

已提交
3196 3197 3198
	if (cmdiocb->context_un.mbox)
		mbox = cmdiocb->context_un.mbox;

3199 3200 3201
	/* First determine if this is a LS_RJT cmpl. Note, this callback
	 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
	 */
3202
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3203 3204
	if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
	    (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3205
		/* A LS_RJT associated with Default RPI cleanup has its own
D
Daniel Mack 已提交
3206
		 * separate code path.
3207 3208 3209 3210 3211
		 */
		if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
			ls_rjt = 1;
	}

已提交
3212
	/* Check to see if link went down during discovery */
3213
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
已提交
3214
		if (mbox) {
3215 3216 3217 3218 3219
			mp = (struct lpfc_dmabuf *) mbox->context1;
			if (mp) {
				lpfc_mbuf_free(phba, mp->virt, mp->phys);
				kfree(mp);
			}
3220
			mempool_free(mbox, phba->mbox_mem_pool);
已提交
3221
		}
3222 3223
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
		    (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3224
			if (lpfc_nlp_not_used(ndlp)) {
3225
				ndlp = NULL;
3226 3227 3228 3229 3230 3231
				/* Indicate the node has already released,
				 * should not reference to it from within
				 * the routine lpfc_els_free_iocb.
				 */
				cmdiocb->context1 = NULL;
			}
已提交
3232 3233 3234
		goto out;
	}

J
James Smart 已提交
3235
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3236
		"ELS rsp cmpl:    status:x%x/x%x did:x%x",
J
James Smart 已提交
3237
		irsp->ulpStatus, irsp->un.ulpWord[4],
3238
		cmdiocb->iocb.un.elsreq64.remoteID);
已提交
3239
	/* ELS response tag <ulpIoTag> completes */
3240 3241 3242 3243 3244 3245 3246
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0110 ELS response tag x%x completes "
			 "Data: x%x x%x x%x x%x x%x x%x x%x\n",
			 cmdiocb->iocb.ulpIoTag, rspiocb->iocb.ulpStatus,
			 rspiocb->iocb.un.ulpWord[4], rspiocb->iocb.ulpTimeout,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
已提交
3247 3248 3249
	if (mbox) {
		if ((rspiocb->iocb.ulpStatus == 0)
		    && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
J
James Smart 已提交
3250
			lpfc_unreg_rpi(vport, ndlp);
3251 3252 3253
			/* Increment reference count to ndlp to hold the
			 * reference to ndlp for the callback function.
			 */
3254
			mbox->context2 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
3255
			mbox->vport = vport;
J
James Smart 已提交
3256 3257 3258 3259 3260 3261 3262 3263
			if (ndlp->nlp_flag & NLP_RM_DFLT_RPI) {
				mbox->mbox_flag |= LPFC_MBX_IMED_UNREG;
				mbox->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
			}
			else {
				mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
				ndlp->nlp_prev_state = ndlp->nlp_state;
				lpfc_nlp_set_state(vport, ndlp,
J
James Smart 已提交
3264
					   NLP_STE_REG_LOGIN_ISSUE);
J
James Smart 已提交
3265
			}
3266
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3267
			    != MBX_NOT_FINISHED)
已提交
3268
				goto out;
3269 3270 3271 3272 3273
			else
				/* Decrement the ndlp reference count we
				 * set for this failed mailbox command.
				 */
				lpfc_nlp_put(ndlp);
3274 3275 3276 3277 3278 3279 3280 3281

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

3282
			if (lpfc_nlp_not_used(ndlp)) {
3283
				ndlp = NULL;
3284 3285 3286 3287 3288 3289
				/* Indicate node has already been released,
				 * should not reference to it from within
				 * the routine lpfc_els_free_iocb.
				 */
				cmdiocb->context1 = NULL;
			}
已提交
3290
		} else {
J
James Smart 已提交
3291 3292 3293
			/* Do not drop node for lpfc_els_abort'ed ELS cmds */
			if (!lpfc_error_lost_link(irsp) &&
			    ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3294
				if (lpfc_nlp_not_used(ndlp)) {
3295
					ndlp = NULL;
3296 3297 3298 3299 3300 3301 3302
					/* Indicate node has already been
					 * released, should not reference
					 * to it from within the routine
					 * lpfc_els_free_iocb.
					 */
					cmdiocb->context1 = NULL;
				}
已提交
3303 3304
			}
		}
3305 3306 3307 3308 3309 3310
		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
3311 3312
	}
out:
3313
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
J
James Smart 已提交
3314
		spin_lock_irq(shost->host_lock);
J
James Smart 已提交
3315
		ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
J
James Smart 已提交
3316
		spin_unlock_irq(shost->host_lock);
3317 3318 3319 3320 3321 3322 3323

		/* If the node is not being used by another discovery thread,
		 * and we are sending a reject, we are done with it.
		 * Release driver reference count here and free associated
		 * resources.
		 */
		if (ls_rjt)
3324 3325 3326 3327 3328 3329
			if (lpfc_nlp_not_used(ndlp))
				/* Indicate node has already been released,
				 * should not reference to it from within
				 * the routine lpfc_els_free_iocb.
				 */
				cmdiocb->context1 = NULL;
已提交
3330
	}
3331

已提交
3332 3333 3334 3335
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

3336
/**
3337
 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360
 * @vport: pointer to a host virtual N_Port data structure.
 * @flag: the els command code to be accepted.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 * @mbox: pointer to the driver internal queue element for mailbox command.
 *
 * This routine prepares and issues an Accept (ACC) response IOCB
 * command. It uses the @flag to properly set up the IOCB field for the
 * specific ACC response command to be issued and invokes the
 * lpfc_sli_issue_iocb() routine to send out ACC response IOCB. If a
 * @mbox pointer is passed in, it will be put into the context_un.mbox
 * field of the IOCB for the completion callback function to issue the
 * mailbox command to the HBA later when callback is invoked.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the corresponding response ELS IOCB command.
 *
 * Return code
 *   0 - Successfully issued acc response
 *   1 - Failed to issue acc response
 **/
已提交
3361
int
J
James Smart 已提交
3362 3363
lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
		 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3364
		 LPFC_MBOXQ_t *mbox)
已提交
3365
{
J
James Smart 已提交
3366 3367
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
3368 3369 3370 3371 3372 3373 3374
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;
3375
	ELS_PKT *els_pkt_ptr;
已提交
3376 3377 3378 3379 3380 3381

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

	switch (flag) {
	case ELS_CMD_ACC:
3382
		cmdsize = sizeof(uint32_t);
J
James Smart 已提交
3383 3384
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3385
		if (!elsiocb) {
J
James Smart 已提交
3386
			spin_lock_irq(shost->host_lock);
3387
			ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3388
			spin_unlock_irq(shost->host_lock);
3389
			return 1;
已提交
3390
		}
J
James Smart 已提交
3391

已提交
3392 3393 3394 3395
		icmd = &elsiocb->iocb;
		icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
		pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
		*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3396
		pcmd += sizeof(uint32_t);
J
James Smart 已提交
3397 3398 3399 3400

		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
			"Issue ACC:       did:x%x flg:x%x",
			ndlp->nlp_DID, ndlp->nlp_flag, 0);
已提交
3401 3402
		break;
	case ELS_CMD_PLOGI:
3403
		cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
J
James Smart 已提交
3404 3405
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3406
		if (!elsiocb)
3407
			return 1;
3408

已提交
3409 3410 3411 3412 3413 3414 3415 3416
		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;
3417 3418
		pcmd += sizeof(uint32_t);
		memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
J
James Smart 已提交
3419 3420 3421 3422

		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
			"Issue ACC PLOGI: did:x%x flg:x%x",
			ndlp->nlp_DID, ndlp->nlp_flag, 0);
已提交
3423
		break;
3424
	case ELS_CMD_PRLO:
3425
		cmdsize = sizeof(uint32_t) + sizeof(PRLO);
J
James Smart 已提交
3426
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3427 3428 3429 3430 3431 3432 3433 3434 3435
					     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,
3436
		       sizeof(uint32_t) + sizeof(PRLO));
3437 3438 3439
		*((uint32_t *) (pcmd)) = ELS_CMD_PRLO_ACC;
		els_pkt_ptr = (ELS_PKT *) pcmd;
		els_pkt_ptr->un.prlo.acceptRspCode = PRLO_REQ_EXECUTED;
J
James Smart 已提交
3440 3441 3442 3443

		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
			"Issue ACC PRLO:  did:x%x flg:x%x",
			ndlp->nlp_DID, ndlp->nlp_flag, 0);
3444
		break;
已提交
3445
	default:
3446
		return 1;
已提交
3447 3448
	}
	/* Xmit ELS ACC response tag <ulpIoTag> */
3449 3450 3451 3452 3453 3454
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0128 Xmit ELS ACC response tag x%x, XRI: x%x, "
			 "DID: x%x, nlp_flag: x%x nlp_state: x%x RPI: x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
已提交
3455
	if (ndlp->nlp_flag & NLP_LOGO_ACC) {
J
James Smart 已提交
3456
		spin_lock_irq(shost->host_lock);
3457
		ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3458
		spin_unlock_irq(shost->host_lock);
已提交
3459 3460
		elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
	} else {
J
James Smart 已提交
3461
		elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3462 3463 3464
	}

	phba->fc_stat.elsXmitACC++;
3465
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3466 3467
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3468
		return 1;
已提交
3469
	}
3470
	return 0;
已提交
3471 3472
}

3473
/**
3474
 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494
 * @vport: pointer to a virtual N_Port data structure.
 * @rejectError:
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 * @mbox: pointer to the driver internal queue element for mailbox command.
 *
 * This routine prepares and issue an Reject (RJT) response IOCB
 * command. If a @mbox pointer is passed in, it will be put into the
 * context_un.mbox field of the IOCB for the completion callback function
 * to issue to the HBA later.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the reject response ELS IOCB command.
 *
 * Return code
 *   0 - Successfully issued reject response
 *   1 - Failed to issue reject response
 **/
已提交
3495
int
J
James Smart 已提交
3496
lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
J
James Smart 已提交
3497 3498
		    struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
		    LPFC_MBOXQ_t *mbox)
已提交
3499
{
J
James Smart 已提交
3500
	struct lpfc_hba  *phba = vport->phba;
已提交
3501 3502 3503 3504 3505 3506 3507 3508 3509
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
3510
	cmdsize = 2 * sizeof(uint32_t);
J
James Smart 已提交
3511 3512
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LS_RJT);
3513
	if (!elsiocb)
3514
		return 1;
已提交
3515 3516 3517 3518 3519 3520 3521

	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;
3522
	pcmd += sizeof(uint32_t);
已提交
3523 3524
	*((uint32_t *) (pcmd)) = rejectError;

3525
	if (mbox)
J
James Smart 已提交
3526 3527
		elsiocb->context_un.mbox = mbox;

已提交
3528
	/* Xmit ELS RJT <err> response tag <ulpIoTag> */
3529 3530 3531 3532 3533 3534 3535
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0129 Xmit ELS RJT x%x response tag x%x "
			 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
			 "rpi x%x\n",
			 rejectError, elsiocb->iotag,
			 elsiocb->iocb.ulpContext, ndlp->nlp_DID,
			 ndlp->nlp_flag, ndlp->nlp_state, ndlp->nlp_rpi);
J
James Smart 已提交
3536 3537 3538 3539
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"Issue LS_RJT:    did:x%x flg:x%x err:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, rejectError);

已提交
3540
	phba->fc_stat.elsXmitLSRJT++;
J
James Smart 已提交
3541
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3542
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3543

已提交
3544 3545
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3546
		return 1;
已提交
3547
	}
3548
	return 0;
已提交
3549 3550
}

3551
/**
3552
 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569
 * @vport: pointer to a virtual N_Port data structure.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine prepares and issues an Accept (ACC) response to Address
 * Discover (ADISC) ELS command. It simply prepares the payload of the IOCB
 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the ADISC Accept response ELS IOCB command.
 *
 * Return code
 *   0 - Successfully issued acc adisc response
 *   1 - Failed to issue adisc acc response
 **/
已提交
3570
int
J
James Smart 已提交
3571 3572
lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
		       struct lpfc_nodelist *ndlp)
已提交
3573
{
J
James Smart 已提交
3574
	struct lpfc_hba  *phba = vport->phba;
已提交
3575
	ADISC *ap;
J
James Smart 已提交
3576
	IOCB_t *icmd, *oldcmd;
已提交
3577 3578 3579 3580 3581
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

3582
	cmdsize = sizeof(uint32_t) + sizeof(ADISC);
J
James Smart 已提交
3583 3584
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3585
	if (!elsiocb)
3586
		return 1;
已提交
3587

3588 3589 3590 3591
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

已提交
3592
	/* Xmit ADISC ACC response tag <ulpIoTag> */
3593 3594 3595 3596 3597 3598
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0130 Xmit ADISC ACC response iotag x%x xri: "
			 "x%x, did x%x, nlp_flag x%x, nlp_state x%x rpi x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
已提交
3599 3600 3601
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3602
	pcmd += sizeof(uint32_t);
已提交
3603 3604 3605

	ap = (ADISC *) (pcmd);
	ap->hardAL_PA = phba->fc_pref_ALPA;
3606 3607
	memcpy(&ap->portName, &vport->fc_portname, sizeof(struct lpfc_name));
	memcpy(&ap->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
J
James Smart 已提交
3608
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
3609

J
James Smart 已提交
3610 3611 3612 3613
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"Issue ACC ADISC: did:x%x flg:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, 0);

已提交
3614
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3615
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3616
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3617 3618
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3619
		return 1;
已提交
3620
	}
3621
	return 0;
已提交
3622 3623
}

3624
/**
3625
 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642
 * @vport: pointer to a virtual N_Port data structure.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine prepares and issues an Accept (ACC) response to Process
 * Login (PRLI) ELS command. It simply prepares the payload of the IOCB
 * and invokes the lpfc_sli_issue_iocb() routine to send out the command.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the PRLI Accept response ELS IOCB command.
 *
 * Return code
 *   0 - Successfully issued acc prli response
 *   1 - Failed to issue acc prli response
 **/
已提交
3643
int
J
James Smart 已提交
3644
lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3645
		      struct lpfc_nodelist *ndlp)
已提交
3646
{
J
James Smart 已提交
3647
	struct lpfc_hba  *phba = vport->phba;
已提交
3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659
	PRLI *npr;
	lpfc_vpd_t *vpd;
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;

3660
	cmdsize = sizeof(uint32_t) + sizeof(PRLI);
J
James Smart 已提交
3661
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3662
		ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
3663 3664
	if (!elsiocb)
		return 1;
已提交
3665

3666 3667 3668
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3669
	/* Xmit PRLI ACC response tag <ulpIoTag> */
3670 3671 3672 3673 3674 3675
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0131 Xmit PRLI ACC response tag x%x xri x%x, "
			 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
已提交
3676 3677 3678
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
3679
	pcmd += sizeof(uint32_t);
已提交
3680 3681

	/* For PRLI, remainder of payload is PRLI parameter page */
3682
	memset(pcmd, 0, sizeof(PRLI));
已提交
3683 3684 3685 3686

	npr = (PRLI *) pcmd;
	vpd = &phba->vpd;
	/*
3687 3688
	 * If the remote port is a target and our firmware version is 3.20 or
	 * later, set the following bits for FC-TAPE support.
已提交
3689
	 */
3690 3691
	if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
	    (vpd->rev.feaLevelHigh >= 0x02)) {
已提交
3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704
		npr->ConfmComplAllowed = 1;
		npr->Retry = 1;
		npr->TaskRetryIdReq = 1;
	}

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

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

J
James Smart 已提交
3705 3706 3707 3708
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"Issue ACC PRLI:  did:x%x flg:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, 0);

已提交
3709
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3710
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3711

3712
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3713 3714
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3715
		return 1;
已提交
3716
	}
3717
	return 0;
已提交
3718 3719
}

3720
/**
3721
 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745
 * @vport: pointer to a virtual N_Port data structure.
 * @format: rnid command format.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine issues a Request Node Identification Data (RNID) Accept
 * (ACC) response. It constructs the RNID ACC response command according to
 * the proper @format and then calls the lpfc_sli_issue_iocb() routine to
 * issue the response. Note that this command does not need to hold the ndlp
 * reference count for the callback. So, the ndlp reference count taken by
 * the lpfc_prep_els_iocb() routine is put back and the context1 field of
 * IOCB is set to NULL to indicate to the lpfc_els_free_iocb() routine that
 * there is no ndlp reference available.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function. However, for the RNID Accept Response ELS command,
 * this is undone later by this routine after the IOCB is allocated.
 *
 * Return code
 *   0 - Successfully issued acc rnid response
 *   1 - Failed to issue acc rnid response
 **/
已提交
3746
static int
J
James Smart 已提交
3747
lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
3748
		      struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
已提交
3749
{
J
James Smart 已提交
3750
	struct lpfc_hba  *phba = vport->phba;
已提交
3751
	RNID *rn;
J
James Smart 已提交
3752
	IOCB_t *icmd, *oldcmd;
已提交
3753 3754 3755 3756 3757 3758 3759
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
3760 3761
	cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
					+ (2 * sizeof(struct lpfc_name));
已提交
3762
	if (format)
3763
		cmdsize += sizeof(RNID_TOP_DISC);
已提交
3764

J
James Smart 已提交
3765 3766
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3767
	if (!elsiocb)
3768
		return 1;
已提交
3769

3770 3771 3772
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3773
	/* Xmit RNID ACC response tag <ulpIoTag> */
3774 3775 3776
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0132 Xmit RNID ACC response tag x%x xri x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext);
已提交
3777 3778
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3779
	pcmd += sizeof(uint32_t);
已提交
3780

3781
	memset(pcmd, 0, sizeof(RNID));
已提交
3782 3783
	rn = (RNID *) (pcmd);
	rn->Format = format;
3784 3785 3786
	rn->CommonLen = (2 * sizeof(struct lpfc_name));
	memcpy(&rn->portName, &vport->fc_portname, sizeof(struct lpfc_name));
	memcpy(&rn->nodeName, &vport->fc_nodename, sizeof(struct lpfc_name));
已提交
3787 3788 3789 3790 3791
	switch (format) {
	case 0:
		rn->SpecificLen = 0;
		break;
	case RNID_TOPOLOGY_DISC:
3792
		rn->SpecificLen = sizeof(RNID_TOP_DISC);
已提交
3793
		memcpy(&rn->un.topologyDisc.portName,
3794
		       &vport->fc_portname, sizeof(struct lpfc_name));
已提交
3795 3796 3797 3798 3799 3800 3801 3802 3803 3804
		rn->un.topologyDisc.unitType = RNID_HBA;
		rn->un.topologyDisc.physPort = 0;
		rn->un.topologyDisc.attachedNodes = 0;
		break;
	default:
		rn->CommonLen = 0;
		rn->SpecificLen = 0;
		break;
	}

J
James Smart 已提交
3805 3806 3807 3808
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"Issue ACC RNID:  did:x%x flg:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, 0);

已提交
3809
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3810
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3811
	lpfc_nlp_put(ndlp);
已提交
3812 3813 3814
	elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
				    * it could be freed */

3815
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3816 3817
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3818
		return 1;
已提交
3819
	}
3820
	return 0;
已提交
3821 3822
}

3823
/**
3824
 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues Address Discover (ADISC) ELS commands to those
 * N_Ports which are in node port recovery state and ADISC has not been issued
 * for the @vport. Each time an ELS ADISC IOCB is issued by invoking the
 * lpfc_issue_els_adisc() routine, the per @vport number of discover count
 * (num_disc_nodes) shall be incremented. If the num_disc_nodes reaches a
 * pre-configured threshold (cfg_discovery_threads), the @vport fc_flag will
 * be marked with FC_NLP_MORE bit and the process of issuing remaining ADISC
 * IOCBs quit for later pick up. On the other hand, after walking through
 * all the ndlps with the @vport and there is none ADISC IOCB issued, the
 * @vport fc_flag shall be cleared with FC_NLP_MORE bit indicating there is
 * no more ADISC need to be sent.
 *
 * Return code
 *    The number of N_Ports with adisc issued.
 **/
已提交
3842
int
J
James Smart 已提交
3843
lpfc_els_disc_adisc(struct lpfc_vport *vport)
已提交
3844
{
J
James Smart 已提交
3845
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3846
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
3847
	int sentadisc = 0;
已提交
3848

3849
	/* go thru NPR nodes and issue any remaining ELS ADISCs */
J
James Smart 已提交
3850
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3851 3852
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
3853 3854 3855
		if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
		    (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
		    (ndlp->nlp_flag & NLP_NPR_ADISC) != 0) {
J
James Smart 已提交
3856
			spin_lock_irq(shost->host_lock);
3857
			ndlp->nlp_flag &= ~NLP_NPR_ADISC;
J
James Smart 已提交
3858
			spin_unlock_irq(shost->host_lock);
3859
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
3860 3861
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, 0);
3862
			sentadisc++;
J
James Smart 已提交
3863 3864
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
3865
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
3866 3867 3868
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
3869
				break;
已提交
3870 3871 3872 3873
			}
		}
	}
	if (sentadisc == 0) {
J
James Smart 已提交
3874 3875 3876
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
3877
	}
3878
	return sentadisc;
已提交
3879 3880
}

3881
/**
3882
 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine issues Port Login (PLOGI) ELS commands to all the N_Ports
 * which are in node port recovery state, with a @vport. Each time an ELS
 * ADISC PLOGI IOCB is issued by invoking the lpfc_issue_els_plogi() routine,
 * the per @vport number of discover count (num_disc_nodes) shall be
 * incremented. If the num_disc_nodes reaches a pre-configured threshold
 * (cfg_discovery_threads), the @vport fc_flag will be marked with FC_NLP_MORE
 * bit set and quit the process of issuing remaining ADISC PLOGIN IOCBs for
 * later pick up. On the other hand, after walking through all the ndlps with
 * the @vport and there is none ADISC PLOGI IOCB issued, the @vport fc_flag
 * shall be cleared with the FC_NLP_MORE bit indicating there is no more ADISC
 * PLOGI need to be sent.
 *
 * Return code
 *   The number of N_Ports with plogi issued.
 **/
已提交
3900
int
J
James Smart 已提交
3901
lpfc_els_disc_plogi(struct lpfc_vport *vport)
已提交
3902
{
J
James Smart 已提交
3903
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3904
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
3905
	int sentplogi = 0;
已提交
3906

J
James Smart 已提交
3907 3908
	/* go thru NPR nodes and issue any remaining ELS PLOGIs */
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3909 3910
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
3911 3912 3913 3914 3915
		if (ndlp->nlp_state == NLP_STE_NPR_NODE &&
		    (ndlp->nlp_flag & NLP_NPR_2B_DISC) != 0 &&
		    (ndlp->nlp_flag & NLP_DELAY_TMO) == 0 &&
		    (ndlp->nlp_flag & NLP_NPR_ADISC) == 0) {
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
3916 3917
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
			lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
3918
			sentplogi++;
J
James Smart 已提交
3919 3920
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
3921
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
3922 3923 3924
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
3925
				break;
已提交
3926 3927 3928
			}
		}
	}
3929 3930 3931 3932
	if (sentplogi) {
		lpfc_set_disctmo(vport);
	}
	else {
J
James Smart 已提交
3933 3934 3935
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
3936
	}
3937
	return sentplogi;
已提交
3938 3939
}

3940
/**
3941
 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
3942 3943 3944 3945 3946 3947 3948
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine cleans up any Registration State Change Notification
 * (RSCN) activity with a @vport. Note that the fc_rscn_flush flag of the
 * @vport together with the host_lock is used to prevent multiple thread
 * trying to access the RSCN array on a same @vport at the same time.
 **/
3949
void
J
James Smart 已提交
3950
lpfc_els_flush_rscn(struct lpfc_vport *vport)
已提交
3951
{
J
James Smart 已提交
3952 3953
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
3954 3955
	int i;

3956 3957 3958 3959 3960 3961 3962 3963 3964 3965
	spin_lock_irq(shost->host_lock);
	if (vport->fc_rscn_flush) {
		/* Another thread is walking fc_rscn_id_list on this vport */
		spin_unlock_irq(shost->host_lock);
		return;
	}
	/* Indicate we are walking lpfc_els_flush_rscn on this vport */
	vport->fc_rscn_flush = 1;
	spin_unlock_irq(shost->host_lock);

J
James Smart 已提交
3966
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3967
		lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
J
James Smart 已提交
3968
		vport->fc_rscn_id_list[i] = NULL;
已提交
3969
	}
J
James Smart 已提交
3970 3971 3972 3973 3974
	spin_lock_irq(shost->host_lock);
	vport->fc_rscn_id_cnt = 0;
	vport->fc_flag &= ~(FC_RSCN_MODE | FC_RSCN_DISCOVERY);
	spin_unlock_irq(shost->host_lock);
	lpfc_can_disctmo(vport);
3975 3976
	/* Indicate we are done walking this fc_rscn_id_list */
	vport->fc_rscn_flush = 0;
已提交
3977 3978
}

3979
/**
3980
 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
3981 3982 3983 3984 3985 3986 3987 3988 3989 3990
 * @vport: pointer to a host virtual N_Port data structure.
 * @did: remote destination port identifier.
 *
 * This routine checks whether there is any pending Registration State
 * Configuration Notification (RSCN) to a @did on @vport.
 *
 * Return code
 *   None zero - The @did matched with a pending rscn
 *   0 - not able to match @did with a pending rscn
 **/
已提交
3991
int
J
James Smart 已提交
3992
lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
已提交
3993 3994 3995 3996
{
	D_ID ns_did;
	D_ID rscn_did;
	uint32_t *lp;
3997
	uint32_t payload_len, i;
3998
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3999 4000 4001 4002 4003

	ns_did.un.word = did;

	/* Never match fabric nodes for RSCNs */
	if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
J
James Smart 已提交
4004
		return 0;
已提交
4005 4006

	/* If we are doing a FULL RSCN rediscovery, match everything */
J
James Smart 已提交
4007
	if (vport->fc_flag & FC_RSCN_DISCOVERY)
4008
		return did;
已提交
4009

4010 4011 4012 4013 4014 4015 4016 4017 4018
	spin_lock_irq(shost->host_lock);
	if (vport->fc_rscn_flush) {
		/* Another thread is walking fc_rscn_id_list on this vport */
		spin_unlock_irq(shost->host_lock);
		return 0;
	}
	/* Indicate we are walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 1;
	spin_unlock_irq(shost->host_lock);
J
James Smart 已提交
4019
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4020 4021 4022
		lp = vport->fc_rscn_id_list[i]->virt;
		payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
		payload_len -= sizeof(uint32_t);	/* take off word 0 */
已提交
4023
		while (payload_len) {
4024 4025
			rscn_did.un.word = be32_to_cpu(*lp++);
			payload_len -= sizeof(uint32_t);
4026 4027
			switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
			case RSCN_ADDRESS_FORMAT_PORT:
4028 4029 4030
				if ((ns_did.un.b.domain == rscn_did.un.b.domain)
				    && (ns_did.un.b.area == rscn_did.un.b.area)
				    && (ns_did.un.b.id == rscn_did.un.b.id))
4031
					goto return_did_out;
已提交
4032
				break;
4033
			case RSCN_ADDRESS_FORMAT_AREA:
已提交
4034 4035
				if ((ns_did.un.b.domain == rscn_did.un.b.domain)
				    && (ns_did.un.b.area == rscn_did.un.b.area))
4036
					goto return_did_out;
已提交
4037
				break;
4038
			case RSCN_ADDRESS_FORMAT_DOMAIN:
已提交
4039
				if (ns_did.un.b.domain == rscn_did.un.b.domain)
4040
					goto return_did_out;
已提交
4041
				break;
4042
			case RSCN_ADDRESS_FORMAT_FABRIC:
4043
				goto return_did_out;
已提交
4044 4045
			}
		}
4046
	}
4047 4048
	/* Indicate we are done with walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
4049
	return 0;
4050 4051 4052 4053
return_did_out:
	/* Indicate we are done with walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
	return did;
已提交
4054 4055
}

4056
/**
4057
 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
4058 4059 4060 4061 4062 4063 4064 4065 4066
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine sends recovery (NLP_EVT_DEVICE_RECOVERY) event to the
 * state machine for a @vport's nodes that are with pending RSCN (Registration
 * State Change Notification).
 *
 * Return code
 *   0 - Successful (currently alway return 0)
 **/
已提交
4067
static int
J
James Smart 已提交
4068
lpfc_rscn_recovery_check(struct lpfc_vport *vport)
已提交
4069
{
4070
	struct lpfc_nodelist *ndlp = NULL;
已提交
4071

4072
	/* Move all affected nodes by pending RSCNs to NPR state. */
J
James Smart 已提交
4073
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4074
		if (!NLP_CHK_NODE_ACT(ndlp) ||
4075 4076
		    (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
		    !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
4077
			continue;
J
James Smart 已提交
4078
		lpfc_disc_state_machine(vport, ndlp, NULL,
4079 4080
					NLP_EVT_DEVICE_RECOVERY);
		lpfc_cancel_retry_delay_tmo(vport, ndlp);
已提交
4081
	}
4082
	return 0;
已提交
4083 4084
}

4085
/**
4086
 * lpfc_send_rscn_event - Send an RSCN event to management application
4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 *
 * lpfc_send_rscn_event sends an RSCN netlink event to management
 * applications.
 */
static void
lpfc_send_rscn_event(struct lpfc_vport *vport,
		struct lpfc_iocbq *cmdiocb)
{
	struct lpfc_dmabuf *pcmd;
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	uint32_t *payload_ptr;
	uint32_t payload_len;
	struct lpfc_rscn_event_header *rscn_event_data;

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

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

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

	kfree(rscn_event_data);
}

4128
/**
4129
 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes an unsolicited RSCN (Registration State Change
 * Notification) IOCB. First, the payload of the unsolicited RSCN is walked
 * to invoke fc_host_post_event() routine to the FC transport layer. If the
 * discover state machine is about to begin discovery, it just accepts the
 * RSCN and the discovery process will satisfy the RSCN. If this RSCN only
 * contains N_Port IDs for other vports on this HBA, it just accepts the
 * RSCN and ignore processing it. If the state machine is in the recovery
 * state, the fc_rscn_id_list of this @vport is walked and the
 * lpfc_rscn_recovery_check() routine is invoked to send recovery event for
 * all nodes that match RSCN payload. Otherwise, the lpfc_els_handle_rscn()
 * routine is invoked to handle the RSCN event.
 *
 * Return code
 *   0 - Just sent the acc response
 *   1 - Sent the acc response and waited for name server completion
 **/
已提交
4150
static int
J
James Smart 已提交
4151
lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4152
		  struct lpfc_nodelist *ndlp)
已提交
4153
{
J
James Smart 已提交
4154 4155
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4156
	struct lpfc_dmabuf *pcmd;
4157
	uint32_t *lp, *datap;
已提交
4158
	IOCB_t *icmd;
4159
	uint32_t payload_len, length, nportid, *cmd;
4160
	int rscn_cnt;
4161
	int rscn_id = 0, hba_id = 0;
4162
	int i;
已提交
4163 4164 4165 4166 4167

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

4168 4169
	payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
	payload_len -= sizeof(uint32_t);	/* take off word 0 */
已提交
4170
	/* RSCN received */
4171 4172
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4173 4174
			 vport->fc_flag, payload_len, *lp,
			 vport->fc_rscn_id_cnt);
4175 4176 4177 4178

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

4179
	for (i = 0; i < payload_len/sizeof(uint32_t); i++)
J
James Smart 已提交
4180
		fc_host_post_event(shost, fc_get_event_number(),
4181 4182
			FCH_EVT_RSCN, lp[i]);

已提交
4183 4184 4185
	/* If we are about to begin discovery, just ACC the RSCN.
	 * Discovery processing will satisfy it.
	 */
J
James Smart 已提交
4186
	if (vport->port_state <= LPFC_NS_QRY) {
J
James Smart 已提交
4187 4188 4189 4190
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RSCN ignore: did:x%x/ste:x%x flg:x%x",
			ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);

4191
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4192
		return 0;
已提交
4193 4194
	}

4195 4196 4197 4198
	/* If this RSCN just contains NPortIDs for other vports on this HBA,
	 * just ACC and ignore it.
	 */
	if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
4199
		!(vport->cfg_peer_port_login)) {
4200 4201 4202 4203 4204 4205 4206
		i = payload_len;
		datap = lp;
		while (i > 0) {
			nportid = *datap++;
			nportid = ((be32_to_cpu(nportid)) & Mask_DID);
			i -= sizeof(uint32_t);
			rscn_id++;
4207 4208
			if (lpfc_find_vport_by_did(phba, nportid))
				hba_id++;
4209 4210 4211
		}
		if (rscn_id == hba_id) {
			/* ALL NPortIDs in RSCN are on HBA */
4212
			lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4213
					 "0219 Ignore RSCN "
4214 4215
					 "Data: x%x x%x x%x x%x\n",
					 vport->fc_flag, payload_len,
4216
					 *lp, vport->fc_rscn_id_cnt);
J
James Smart 已提交
4217 4218 4219 4220 4221
			lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
				"RCV RSCN vport:  did:x%x/ste:x%x flg:x%x",
				ndlp->nlp_DID, vport->port_state,
				ndlp->nlp_flag);

4222
			lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4223
				ndlp, NULL);
4224 4225 4226 4227
			return 0;
		}
	}

4228 4229 4230 4231
	spin_lock_irq(shost->host_lock);
	if (vport->fc_rscn_flush) {
		/* Another thread is walking fc_rscn_id_list on this vport */
		vport->fc_flag |= FC_RSCN_DISCOVERY;
4232
		spin_unlock_irq(shost->host_lock);
4233 4234
		/* Send back ACC */
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4235 4236 4237 4238 4239
		return 0;
	}
	/* Indicate we are walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 1;
	spin_unlock_irq(shost->host_lock);
4240
	/* Get the array count after successfully have the token */
4241
	rscn_cnt = vport->fc_rscn_id_cnt;
已提交
4242 4243 4244
	/* If we are already processing an RSCN, save the received
	 * RSCN payload buffer, cmdiocb->context2 to process later.
	 */
J
James Smart 已提交
4245
	if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
J
James Smart 已提交
4246 4247 4248 4249
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RSCN defer:  did:x%x/ste:x%x flg:x%x",
			ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);

4250
		spin_lock_irq(shost->host_lock);
4251 4252
		vport->fc_flag |= FC_RSCN_DEFERRED;
		if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
J
James Smart 已提交
4253 4254 4255
		    !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
			vport->fc_flag |= FC_RSCN_MODE;
			spin_unlock_irq(shost->host_lock);
4256 4257 4258 4259 4260 4261 4262
			if (rscn_cnt) {
				cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt;
				length = be32_to_cpu(*cmd & ~ELS_CMD_MASK);
			}
			if ((rscn_cnt) &&
			    (payload_len + length <= LPFC_BPL_SIZE)) {
				*cmd &= ELS_CMD_MASK;
4263
				*cmd |= cpu_to_be32(payload_len + length);
4264 4265 4266 4267 4268 4269 4270 4271 4272 4273
				memcpy(((uint8_t *)cmd) + length, lp,
				       payload_len);
			} else {
				vport->fc_rscn_id_list[rscn_cnt] = pcmd;
				vport->fc_rscn_id_cnt++;
				/* If we zero, cmdiocb->context2, the calling
				 * routine will not try to free it.
				 */
				cmdiocb->context2 = NULL;
			}
已提交
4274
			/* Deferred RSCN */
4275 4276 4277 4278 4279
			lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
					 "0235 Deferred RSCN "
					 "Data: x%x x%x x%x\n",
					 vport->fc_rscn_id_cnt, vport->fc_flag,
					 vport->port_state);
已提交
4280
		} else {
J
James Smart 已提交
4281 4282
			vport->fc_flag |= FC_RSCN_DISCOVERY;
			spin_unlock_irq(shost->host_lock);
已提交
4283
			/* ReDiscovery RSCN */
4284 4285 4286 4287 4288
			lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
					 "0234 ReDiscovery RSCN "
					 "Data: x%x x%x x%x\n",
					 vport->fc_rscn_id_cnt, vport->fc_flag,
					 vport->port_state);
已提交
4289
		}
4290 4291
		/* Indicate we are done walking fc_rscn_id_list on this vport */
		vport->fc_rscn_flush = 0;
已提交
4292
		/* Send back ACC */
4293
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4294
		/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4295
		lpfc_rscn_recovery_check(vport);
4296
		spin_lock_irq(shost->host_lock);
4297
		vport->fc_flag &= ~FC_RSCN_DEFERRED;
4298
		spin_unlock_irq(shost->host_lock);
4299
		return 0;
已提交
4300
	}
J
James Smart 已提交
4301 4302 4303 4304
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
		"RCV RSCN:        did:x%x/ste:x%x flg:x%x",
		ndlp->nlp_DID, vport->port_state, ndlp->nlp_flag);

J
James Smart 已提交
4305 4306 4307 4308
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_RSCN_MODE;
	spin_unlock_irq(shost->host_lock);
	vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd;
4309 4310
	/* Indicate we are done walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
已提交
4311 4312 4313 4314 4315
	/*
	 * If we zero, cmdiocb->context2, the calling routine will
	 * not try to free it.
	 */
	cmdiocb->context2 = NULL;
J
James Smart 已提交
4316
	lpfc_set_disctmo(vport);
已提交
4317
	/* Send back ACC */
4318
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4319
	/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4320 4321
	lpfc_rscn_recovery_check(vport);
	return lpfc_els_handle_rscn(vport);
已提交
4322 4323
}

4324
/**
4325
 * lpfc_els_handle_rscn - Handle rscn for a vport
4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine handles the Registration State Configuration Notification
 * (RSCN) for a @vport. If login to NameServer does not exist, a new ndlp shall
 * be created and a Port Login (PLOGI) to the NameServer is issued. Otherwise,
 * if the ndlp to NameServer exists, a Common Transport (CT) command to the
 * NameServer shall be issued. If CT command to the NameServer fails to be
 * issued, the lpfc_els_flush_rscn() routine shall be invoked to clean up any
 * RSCN activities with the @vport.
 *
 * Return code
 *   0 - Cleaned up rscn on the @vport
 *   1 - Wait for plogi to name server before proceed
 **/
已提交
4340
int
J
James Smart 已提交
4341
lpfc_els_handle_rscn(struct lpfc_vport *vport)
已提交
4342 4343
{
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
4344
	struct lpfc_hba *phba = vport->phba;
已提交
4345

4346 4347 4348 4349 4350 4351
	/* Ignore RSCN if the port is being torn down. */
	if (vport->load_flag & FC_UNLOADING) {
		lpfc_els_flush_rscn(vport);
		return 0;
	}

已提交
4352
	/* Start timer for RSCN processing */
J
James Smart 已提交
4353
	lpfc_set_disctmo(vport);
已提交
4354 4355

	/* RSCN processed */
4356 4357 4358 4359
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0215 RSCN processed Data: x%x x%x x%x x%x\n",
			 vport->fc_flag, 0, vport->fc_rscn_id_cnt,
			 vport->port_state);
已提交
4360 4361

	/* To process RSCN, first compare RSCN data with NameServer */
J
James Smart 已提交
4362
	vport->fc_ns_retry = 0;
4363 4364
	vport->num_disc_nodes = 0;

J
James Smart 已提交
4365
	ndlp = lpfc_findnode_did(vport, NameServer_DID);
4366 4367
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)
	    && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
已提交
4368
		/* Good ndlp, issue CT Request to NameServer */
4369
		if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
已提交
4370 4371
			/* Wait for NameServer query cmpl before we can
			   continue */
4372
			return 1;
已提交
4373 4374 4375
	} else {
		/* If login to NameServer does not exist, issue one */
		/* Good status, issue PLOGI to NameServer */
J
James Smart 已提交
4376
		ndlp = lpfc_findnode_did(vport, NameServer_DID);
4377
		if (ndlp && NLP_CHK_NODE_ACT(ndlp))
已提交
4378 4379
			/* Wait for NameServer login cmpl before we can
			   continue */
4380
			return 1;
J
James Smart 已提交
4381

4382 4383 4384 4385 4386 4387 4388 4389
		if (ndlp) {
			ndlp = lpfc_enable_node(vport, ndlp,
						NLP_STE_PLOGI_ISSUE);
			if (!ndlp) {
				lpfc_els_flush_rscn(vport);
				return 0;
			}
			ndlp->nlp_prev_state = NLP_STE_UNUSED_NODE;
已提交
4390
		} else {
4391 4392 4393 4394 4395
			ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
			if (!ndlp) {
				lpfc_els_flush_rscn(vport);
				return 0;
			}
J
James Smart 已提交
4396
			lpfc_nlp_init(vport, ndlp, NameServer_DID);
4397
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
4398
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
已提交
4399
		}
4400 4401 4402 4403 4404 4405
		ndlp->nlp_type |= NLP_FABRIC;
		lpfc_issue_els_plogi(vport, NameServer_DID, 0);
		/* Wait for NameServer login cmpl before we can
		 * continue
		 */
		return 1;
已提交
4406 4407
	}

J
James Smart 已提交
4408
	lpfc_els_flush_rscn(vport);
4409
	return 0;
已提交
4410 4411
}

4412
/**
4413
 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Fabric Login (FLOGI) IOCB received as an ELS
 * unsolicited event. An unsolicited FLOGI can be received in a point-to-
 * point topology. As an unsolicited FLOGI should not be received in a loop
 * mode, any unsolicited FLOGI received in loop mode shall be ignored. The
 * lpfc_check_sparm() routine is invoked to check the parameters in the
 * unsolicited FLOGI. If parameters validation failed, the routine
 * lpfc_els_rsp_reject() shall be called with reject reason code set to
 * LSEXP_SPARM_OPTIONS to reject the FLOGI. Otherwise, the Port WWN in the
 * FLOGI shall be compared with the Port WWN of the @vport to determine who
 * will initiate PLOGI. The higher lexicographical value party shall has
 * higher priority (as the winning port) and will initiate PLOGI and
 * communicate Port_IDs (Addresses) for both nodes in PLOGI. The result
 * of this will be marked in the @vport fc_flag field with FC_PT2PT_PLOGI
 * and then the lpfc_els_rsp_acc() routine is invoked to accept the FLOGI.
 *
 * Return code
 *   0 - Successfully processed the unsolicited flogi
 *   1 - Failed to process the unsolicited flogi
 **/
已提交
4437
static int
J
James Smart 已提交
4438
lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4439
		   struct lpfc_nodelist *ndlp)
已提交
4440
{
J
James Smart 已提交
4441 4442
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456
	struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	uint32_t *lp = (uint32_t *) pcmd->virt;
	IOCB_t *icmd = &cmdiocb->iocb;
	struct serv_parm *sp;
	LPFC_MBOXQ_t *mbox;
	struct ls_rjt stat;
	uint32_t cmd, did;
	int rc;

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

	/* FLOGI received */

J
James Smart 已提交
4457
	lpfc_set_disctmo(vport);
已提交
4458 4459 4460 4461 4462 4463 4464

	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 */
4465 4466 4467 4468
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0113 An FLOGI ELS command x%x was "
				 "received from DID x%x in Loop Mode\n",
				 cmd, did);
4469
		return 1;
已提交
4470 4471 4472 4473
	}

	did = Fabric_DID;

4474
	if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1))) {
已提交
4475 4476 4477 4478
		/* For a FLOGI we accept, then if our portname is greater
		 * then the remote portname we initiate Nport login.
		 */

J
James Smart 已提交
4479
		rc = memcmp(&vport->fc_portname, &sp->portName,
4480
			    sizeof(struct lpfc_name));
已提交
4481 4482

		if (!rc) {
J
James Smart 已提交
4483 4484
			mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
			if (!mbox)
4485
				return 1;
J
James Smart 已提交
4486

已提交
4487 4488 4489 4490
			lpfc_linkdown(phba);
			lpfc_init_link(phba, mbox,
				       phba->cfg_topology,
				       phba->cfg_link_speed);
4491
			mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
已提交
4492
			mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4493
			mbox->vport = vport;
4494
			rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4495
			lpfc_set_loopback_flag(phba);
已提交
4496
			if (rc == MBX_NOT_FINISHED) {
4497
				mempool_free(mbox, phba->mbox_mem_pool);
已提交
4498
			}
4499
			return 1;
4500
		} else if (rc > 0) {	/* greater than */
J
James Smart 已提交
4501 4502 4503
			spin_lock_irq(shost->host_lock);
			vport->fc_flag |= FC_PT2PT_PLOGI;
			spin_unlock_irq(shost->host_lock);
已提交
4504
		}
J
James Smart 已提交
4505 4506 4507 4508
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PT2PT;
		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
		spin_unlock_irq(shost->host_lock);
已提交
4509 4510 4511 4512 4513 4514
	} else {
		/* Reject this request because invalid parameters */
		stat.un.b.lsRjtRsvd0 = 0;
		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
		stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
		stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4515 4516
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
4517
		return 1;
已提交
4518 4519 4520
	}

	/* Send back ACC */
4521
	lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
已提交
4522

4523
	return 0;
已提交
4524 4525
}

4526
/**
4527
 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Request Node Identification Data (RNID) IOCB
 * received as an ELS unsolicited event. Only when the RNID specified format
 * 0x0 or 0xDF (Topology Discovery Specific Node Identification Data)
 * present, this routine will invoke the lpfc_els_rsp_rnid_acc() routine to
 * Accept (ACC) the RNID ELS command. All the other RNID formats are
 * rejected by invoking the lpfc_els_rsp_reject() routine.
 *
 * Return code
 *   0 - Successfully processed rnid iocb (currently always return 0)
 **/
已提交
4542
static int
J
James Smart 已提交
4543 4544
lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	IOCB_t *icmd;
	RNID *rn;
	struct ls_rjt stat;
	uint32_t cmd, did;

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

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

	/* RNID received */

	switch (rn->Format) {
	case 0:
	case RNID_TOPOLOGY_DISC:
		/* Send back ACC */
J
James Smart 已提交
4567
		lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
已提交
4568 4569 4570 4571 4572 4573 4574
		break;
	default:
		/* Reject this request because format not supported */
		stat.un.b.lsRjtRsvd0 = 0;
		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
		stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
		stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4575 4576
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
已提交
4577
	}
4578
	return 0;
已提交
4579 4580
}

4581
/**
4582
 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes a Link Incident Report Registration(LIRR) IOCB
 * received as an ELS unsolicited event. Currently, this function just invokes
 * the lpfc_els_rsp_reject() routine to reject the LIRR IOCB unconditionally.
 *
 * Return code
 *   0 - Successfully processed lirr iocb (currently always return 0)
 **/
已提交
4594
static int
J
James Smart 已提交
4595 4596
lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
4597 4598 4599 4600 4601 4602 4603 4604
{
	struct ls_rjt stat;

	/* For now, unconditionally reject this command */
	stat.un.b.lsRjtRsvd0 = 0;
	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
	stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
	stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4605
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4606 4607 4608
	return 0;
}

4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631
/**
 * lpfc_els_rcv_rrq - Process an unsolicited rrq iocb
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes a Reinstate Recovery Qualifier (RRQ) IOCB
 * received as an ELS unsolicited event. A request to RRQ shall only
 * be accepted if the Originator Nx_Port N_Port_ID or the Responder
 * Nx_Port N_Port_ID of the target Exchange is the same as the
 * N_Port_ID of the Nx_Port that makes the request. If the RRQ is
 * not accepted, an LS_RJT with reason code "Unable to perform
 * command request" and reason code explanation "Invalid Originator
 * S_ID" shall be returned. For now, we just unconditionally accept
 * RRQ from the target.
 **/
static void
lpfc_els_rcv_rrq(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
{
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
}

4632
/**
4633
 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650
 * @phba: pointer to lpfc hba data structure.
 * @pmb: pointer to the driver internal queue element for mailbox command.
 *
 * This routine is the completion callback function for the MBX_READ_LNK_STAT
 * mailbox command. This callback function is to actually send the Accept
 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
 * mailbox command, constructs the RPS response with the link statistics
 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
 * response to the RPS.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the RPS Accept Response ELS IOCB command.
 *
 **/
4651
static void
4652
lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4653 4654 4655 4656 4657 4658 4659 4660 4661 4662
{
	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;

4663
	mb = &pmb->u.mb;
4664 4665 4666

	ndlp = (struct lpfc_nodelist *) pmb->context2;
	xri = (uint16_t) ((unsigned long)(pmb->context1));
R
Randy Dunlap 已提交
4667 4668
	pmb->context1 = NULL;
	pmb->context2 = NULL;
4669 4670

	if (mb->mbxStatus) {
4671
		mempool_free(pmb, phba->mbox_mem_pool);
4672 4673 4674 4675
		return;
	}

	cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
4676
	mempool_free(pmb, phba->mbox_mem_pool);
J
James Smart 已提交
4677 4678 4679
	elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
				     lpfc_max_els_tries, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
4680 4681

	/* Decrement the ndlp reference count from previous mbox command */
4682
	lpfc_nlp_put(ndlp);
4683

4684
	if (!elsiocb)
4685 4686 4687 4688 4689 4690 4691
		return;

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

	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4692
	pcmd += sizeof(uint32_t); /* Skip past command */
4693 4694 4695 4696 4697 4698
	rps_rsp = (RPS_RSP *)pcmd;

	if (phba->fc_topology != TOPOLOGY_LOOP)
		status = 0x10;
	else
		status = 0x8;
J
James Smart 已提交
4699
	if (phba->pport->fc_flag & FC_FABRIC)
4700 4701 4702
		status |= 0x4;

	rps_rsp->rsvd1 = 0;
4703 4704 4705 4706 4707 4708 4709
	rps_rsp->portStatus = cpu_to_be16(status);
	rps_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
	rps_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
	rps_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
	rps_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
	rps_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
	rps_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);
4710
	/* Xmit ELS RPS ACC response tag <ulpIoTag> */
4711 4712 4713 4714 4715 4716
	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
			 "0118 Xmit ELS RPS ACC response tag x%x xri x%x, "
			 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
J
James Smart 已提交
4717
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4718
	phba->fc_stat.elsXmitACC++;
4719
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
4720 4721 4722 4723
		lpfc_els_free_iocb(phba, elsiocb);
	return;
}

4724
/**
4725
 * lpfc_els_rcv_rps - Process an unsolicited rps iocb
4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Read Port Status (RPS) IOCB received as an
 * ELS unsolicited event. It first checks the remote port state. If the
 * remote port is not in NLP_STE_UNMAPPED_NODE state or NLP_STE_MAPPED_NODE
 * state, it invokes the lpfc_els_rsp_reject() routine to send the reject
 * response. Otherwise, it issue the MBX_READ_LNK_STAT mailbox command
 * for reading the HBA link statistics. It is for the callback function,
 * lpfc_els_rsp_rps_acc(), set to the MBX_READ_LNK_STAT mailbox command
 * to actually sending out RPS Accept (ACC) response.
 *
 * Return codes
 *   0 - Successfully processed rps iocb (currently always return 0)
 **/
4742
static int
J
James Smart 已提交
4743 4744
lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
已提交
4745
{
J
James Smart 已提交
4746
	struct lpfc_hba *phba = vport->phba;
已提交
4747
	uint32_t *lp;
4748 4749 4750 4751 4752 4753
	uint8_t flag;
	LPFC_MBOXQ_t *mbox;
	struct lpfc_dmabuf *pcmd;
	RPS *rps;
	struct ls_rjt stat;

4754
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4755 4756 4757
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
		/* reject the unsolicited RPS request and done with it */
		goto reject_out;
4758 4759 4760 4761 4762 4763 4764 4765

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

	if ((flag == 0) ||
	    ((flag == 1) && (be32_to_cpu(rps->un.portNum) == 0)) ||
J
James Smart 已提交
4766
	    ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
4767
				    sizeof(struct lpfc_name)) == 0))) {
J
James Smart 已提交
4768

4769 4770
		printk("Fix me....\n");
		dump_stack();
J
James Smart 已提交
4771 4772
		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
		if (mbox) {
4773 4774
			lpfc_read_lnk_stat(phba, mbox);
			mbox->context1 =
4775
			    (void *)((unsigned long) cmdiocb->iocb.ulpContext);
4776
			mbox->context2 = lpfc_nlp_get(ndlp);
4777
			mbox->vport = vport;
4778
			mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
4779
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
4780
				!= MBX_NOT_FINISHED)
4781 4782
				/* Mbox completion will send ELS Response */
				return 0;
4783 4784 4785
			/* Decrement reference count used for the failed mbox
			 * command.
			 */
4786
			lpfc_nlp_put(ndlp);
4787 4788 4789
			mempool_free(mbox, phba->mbox_mem_pool);
		}
	}
4790 4791 4792

reject_out:
	/* issue rejection response */
4793 4794 4795 4796
	stat.un.b.lsRjtRsvd0 = 0;
	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
	stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
	stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4797
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4798 4799 4800
	return 0;
}

4801
/**
4802
 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdsize: size of the ELS command.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine issuees an Accept (ACC) Read Port List (RPL) ELS command.
 * It is to be called by the lpfc_els_rcv_rpl() routine to accept the RPL.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the RPL Accept Response ELS command.
 *
 * Return code
 *   0 - Successfully issued ACC RPL ELS command
 *   1 - Failed to issue ACC RPL ELS command
 **/
4820
static int
J
James Smart 已提交
4821 4822
lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
		     struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4823
{
J
James Smart 已提交
4824 4825
	struct lpfc_hba *phba = vport->phba;
	IOCB_t *icmd, *oldcmd;
4826 4827 4828
	RPL_RSP rpl_rsp;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
已提交
4829

J
James Smart 已提交
4830 4831
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
4832

4833
	if (!elsiocb)
4834
		return 1;
4835

4836 4837 4838 4839 4840 4841
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

	pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4842
	pcmd += sizeof(uint16_t);
4843 4844 4845 4846 4847 4848 4849
	*((uint16_t *)(pcmd)) = be16_to_cpu(cmdsize);
	pcmd += sizeof(uint16_t);

	/* Setup the RPL ACC payload */
	rpl_rsp.listLen = be32_to_cpu(1);
	rpl_rsp.index = 0;
	rpl_rsp.port_num_blk.portNum = 0;
J
James Smart 已提交
4850 4851
	rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
	memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
4852 4853 4854
	    sizeof(struct lpfc_name));
	memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
	/* Xmit ELS RPL ACC response tag <ulpIoTag> */
4855 4856 4857 4858 4859 4860 4861
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0120 Xmit ELS RPL ACC response tag x%x "
			 "xri x%x, did x%x, nlp_flag x%x, nlp_state x%x, "
			 "rpi x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi);
J
James Smart 已提交
4862
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4863
	phba->fc_stat.elsXmitACC++;
4864 4865
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
4866 4867 4868 4869 4870 4871
		lpfc_els_free_iocb(phba, elsiocb);
		return 1;
	}
	return 0;
}

4872
/**
4873
 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Read Port List (RPL) IOCB received as an ELS
 * unsolicited event. It first checks the remote port state. If the remote
 * port is not in NLP_STE_UNMAPPED_NODE and NLP_STE_MAPPED_NODE states, it
 * invokes the lpfc_els_rsp_reject() routine to send reject response.
 * Otherwise, this routine then invokes the lpfc_els_rsp_rpl_acc() routine
 * to accept the RPL.
 *
 * Return code
 *   0 - Successfully processed rpl iocb (currently always return 0)
 **/
4888
static int
J
James Smart 已提交
4889 4890
lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
4891 4892 4893 4894 4895 4896 4897 4898
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	uint32_t maxsize;
	uint16_t cmdsize;
	RPL *rpl;
	struct ls_rjt stat;

4899 4900
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
4901
		/* issue rejection response */
4902 4903 4904 4905
		stat.un.b.lsRjtRsvd0 = 0;
		stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
		stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
		stat.un.b.vendorUnique = 0;
J
James Smart 已提交
4906 4907
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
4908 4909
		/* rejected the unsolicited RPL request and done with it */
		return 0;
4910 4911
	}

已提交
4912 4913
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;
4914
	rpl = (RPL *) (lp + 1);
已提交
4915

4916
	maxsize = be32_to_cpu(rpl->maxsize);
已提交
4917

4918 4919 4920 4921 4922
	/* 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);
4923
	} else {
4924 4925
		cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
	}
J
James Smart 已提交
4926
	lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
已提交
4927 4928 4929 4930

	return 0;
}

4931
/**
4932
 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954
 * @vport: pointer to a virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Fibre Channel Address Resolution Protocol
 * (FARP) Request IOCB received as an ELS unsolicited event. Currently,
 * the lpfc driver only supports matching on WWPN or WWNN for FARP. As such,
 * FARP_MATCH_PORT flag and FARP_MATCH_NODE flag are checked against the
 * Match Flag in the FARP request IOCB: if FARP_MATCH_PORT flag is set, the
 * remote PortName is compared against the FC PortName stored in the @vport
 * data structure; if FARP_MATCH_NODE flag is set, the remote NodeName is
 * compared against the FC NodeName stored in the @vport data structure.
 * If any of these matches and the FARP_REQUEST_FARPR flag is set in the
 * FARP request IOCB Response Flag, the lpfc_issue_els_farpr() routine is
 * invoked to send out FARP Response to the remote node. Before sending the
 * FARP Response, however, the FARP_REQUEST_PLOGI flag is check in the FARP
 * request IOCB Response Flag and, if it is set, the lpfc_issue_els_plogi()
 * routine is invoked to log into the remote port first.
 *
 * Return code
 *   0 - Either the FARP Match Mode not supported or successfully processed
 **/
已提交
4955
static int
J
James Smart 已提交
4956 4957
lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972
{
	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> */
4973 4974
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0601 FARP-REQ received from DID x%x\n", did);
已提交
4975 4976
	/* We will only support match on WWPN or WWNN */
	if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
4977
		return 0;
已提交
4978 4979 4980 4981 4982
	}

	cnt = 0;
	/* If this FARP command is searching for my portname */
	if (fp->Mflags & FARP_MATCH_PORT) {
J
James Smart 已提交
4983
		if (memcmp(&fp->RportName, &vport->fc_portname,
4984
			   sizeof(struct lpfc_name)) == 0)
已提交
4985 4986 4987 4988 4989
			cnt = 1;
	}

	/* If this FARP command is searching for my nodename */
	if (fp->Mflags & FARP_MATCH_NODE) {
J
James Smart 已提交
4990
		if (memcmp(&fp->RnodeName, &vport->fc_nodename,
4991
			   sizeof(struct lpfc_name)) == 0)
已提交
4992 4993 4994 4995 4996 4997 4998 4999
			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) {
5000
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
5001
				lpfc_nlp_set_state(vport, ndlp,
5002
						   NLP_STE_PLOGI_ISSUE);
J
James Smart 已提交
5003
				lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
已提交
5004 5005 5006
			}

			/* Send a FARP response to that node */
J
James Smart 已提交
5007 5008
			if (fp->Rflags & FARP_REQUEST_FARPR)
				lpfc_issue_els_farpr(vport, did, 0);
已提交
5009 5010
		}
	}
5011
	return 0;
已提交
5012 5013
}

5014
/**
5015
 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Fibre Channel Address Resolution Protocol
 * Response (FARPR) IOCB received as an ELS unsolicited event. It simply
 * invokes the lpfc_els_rsp_acc() routine to the remote node to accept
 * the FARP response request.
 *
 * Return code
 *   0 - Successfully processed FARPR IOCB (currently always return 0)
 **/
已提交
5028
static int
J
James Smart 已提交
5029 5030
lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_nodelist  *ndlp)
已提交
5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043
{
	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> */
5044 5045
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0600 FARP-RSP received from DID x%x\n", did);
已提交
5046
	/* ACCEPT the Farp resp request */
5047
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
5048 5049 5050 5051

	return 0;
}

5052
/**
5053
 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @fan_ndlp: pointer to a node-list data structure.
 *
 * This routine processes a Fabric Address Notification (FAN) IOCB
 * command received as an ELS unsolicited event. The FAN ELS command will
 * only be processed on a physical port (i.e., the @vport represents the
 * physical port). The fabric NodeName and PortName from the FAN IOCB are
 * compared against those in the phba data structure. If any of those is
 * different, the lpfc_initial_flogi() routine is invoked to initialize
 * Fabric Login (FLOGI) to the fabric to start the discover over. Otherwise,
 * if both of those are identical, the lpfc_issue_fabric_reglogin() routine
 * is invoked to register login to the fabric.
 *
 * Return code
 *   0 - Successfully processed fan iocb (currently always return 0).
 **/
已提交
5071
static int
J
James Smart 已提交
5072 5073
lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *fan_ndlp)
已提交
5074
{
5075
	struct lpfc_hba *phba = vport->phba;
已提交
5076
	uint32_t *lp;
5077
	FAN *fp;
已提交
5078

5079 5080 5081
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
	lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
	fp = (FAN *) ++lp;
5082
	/* FAN received; Fan does not have a reply sequence */
5083 5084
	if ((vport == phba->pport) &&
	    (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
5085
		if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
5086
			    sizeof(struct lpfc_name))) ||
5087
		    (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
5088 5089
			    sizeof(struct lpfc_name)))) {
			/* This port has switched fabrics. FLOGI is required */
J
James Smart 已提交
5090
			lpfc_initial_flogi(vport);
5091 5092 5093
		} else {
			/* FAN verified - skip FLOGI */
			vport->fc_myDID = vport->fc_prevDID;
5094 5095 5096 5097
			if (phba->sli_rev < LPFC_SLI_REV4)
				lpfc_issue_fabric_reglogin(vport);
			else
				lpfc_issue_reg_vfi(vport);
5098
		}
已提交
5099
	}
5100
	return 0;
已提交
5101 5102
}

5103
/**
5104
 * lpfc_els_timeout - Handler funciton to the els timer
5105 5106 5107 5108 5109 5110 5111 5112
 * @ptr: holder for the timer function associated data.
 *
 * This routine is invoked by the ELS timer after timeout. It posts the ELS
 * timer timeout event by setting the WORKER_ELS_TMO bit to the work port
 * event bitmap and then invokes the lpfc_worker_wake_up() routine to wake
 * up the worker thread. It is for the worker thread to invoke the routine
 * lpfc_els_timeout_handler() to work on the posted event WORKER_ELS_TMO.
 **/
已提交
5113 5114 5115
void
lpfc_els_timeout(unsigned long ptr)
{
J
James Smart 已提交
5116 5117
	struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
	struct lpfc_hba   *phba = vport->phba;
5118
	uint32_t tmo_posted;
已提交
5119 5120
	unsigned long iflag;

J
James Smart 已提交
5121
	spin_lock_irqsave(&vport->work_port_lock, iflag);
5122 5123
	tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
	if (!tmo_posted)
J
James Smart 已提交
5124
		vport->work_port_events |= WORKER_ELS_TMO;
5125
	spin_unlock_irqrestore(&vport->work_port_lock, iflag);
5126

5127 5128
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
已提交
5129 5130 5131
	return;
}

5132
/**
5133
 * lpfc_els_timeout_handler - Process an els timeout event
5134 5135 5136 5137 5138 5139 5140
 * @vport: pointer to a virtual N_Port data structure.
 *
 * This routine is the actual handler function that processes an ELS timeout
 * event. It walks the ELS ring to get and abort all the IOCBs (except the
 * ABORT/CLOSE/FARP/FARPR/FDISC), which are associated with the @vport by
 * invoking the lpfc_sli_issue_abort_iotag() routine.
 **/
已提交
5141
void
J
James Smart 已提交
5142
lpfc_els_timeout_handler(struct lpfc_vport *vport)
已提交
5143
{
J
James Smart 已提交
5144
	struct lpfc_hba  *phba = vport->phba;
已提交
5145 5146 5147 5148
	struct lpfc_sli_ring *pring;
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;
	struct lpfc_dmabuf *pcmd;
J
James Smart 已提交
5149
	uint32_t els_command = 0;
已提交
5150
	uint32_t timeout;
J
James Smart 已提交
5151
	uint32_t remote_ID = 0xffffffff;
已提交
5152

J
James Smart 已提交
5153
	spin_lock_irq(&phba->hbalock);
已提交
5154 5155 5156 5157 5158 5159 5160
	timeout = (uint32_t)(phba->fc_ratov << 1);

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

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

J
James Smart 已提交
5161 5162 5163
		if ((piocb->iocb_flag & LPFC_IO_LIBDFC) != 0 ||
		    piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
		    piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
已提交
5164
			continue;
J
James Smart 已提交
5165 5166 5167 5168

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

已提交
5169
		pcmd = (struct lpfc_dmabuf *) piocb->context2;
J
James Smart 已提交
5170 5171
		if (pcmd)
			els_command = *(uint32_t *) (pcmd->virt);
已提交
5172

5173 5174 5175 5176 5177
		if (els_command == ELS_CMD_FARP ||
		    els_command == ELS_CMD_FARPR ||
		    els_command == ELS_CMD_FDISC)
			continue;

已提交
5178
		if (piocb->drvrTimeout > 0) {
5179
			if (piocb->drvrTimeout >= timeout)
已提交
5180
				piocb->drvrTimeout -= timeout;
5181
			else
已提交
5182 5183 5184 5185
				piocb->drvrTimeout = 0;
			continue;
		}

J
James Smart 已提交
5186 5187
		remote_ID = 0xffffffff;
		if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
已提交
5188
			remote_ID = cmd->un.elsreq64.remoteID;
J
James Smart 已提交
5189 5190 5191
		else {
			struct lpfc_nodelist *ndlp;
			ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
5192
			if (ndlp && NLP_CHK_NODE_ACT(ndlp))
J
James Smart 已提交
5193
				remote_ID = ndlp->nlp_DID;
已提交
5194
		}
5195 5196 5197 5198
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0127 ELS timeout Data: x%x x%x x%x "
				 "x%x\n", els_command,
				 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
5199
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
5200
	}
J
James Smart 已提交
5201
	spin_unlock_irq(&phba->hbalock);
5202

J
James Smart 已提交
5203 5204
	if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
		mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
已提交
5205 5206
}

5207
/**
5208
 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226
 * @vport: pointer to a host virtual N_Port data structure.
 *
 * This routine is used to clean up all the outstanding ELS commands on a
 * @vport. It first aborts the @vport by invoking lpfc_fabric_abort_vport()
 * routine. After that, it walks the ELS transmit queue to remove all the
 * IOCBs with the @vport other than the QUE_RING and ABORT/CLOSE IOCBs. For
 * the IOCBs with a non-NULL completion callback function, the callback
 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs with a NULL completion
 * callback function, the IOCB will simply be released. Finally, it walks
 * the ELS transmit completion queue to issue an abort IOCB to any transmit
 * completion queue IOCB that is associated with the @vport and is not
 * an IOCB from libdfc (i.e., the management plane IOCBs that are not
 * part of the discovery state machine) out to HBA by invoking the
 * lpfc_sli_issue_abort_iotag() routine. Note that this function issues the
 * abort IOCB to any transmit completion queueed IOCB, it does not guarantee
 * the IOCBs are aborted when this function returns.
 **/
已提交
5227
void
J
James Smart 已提交
5228
lpfc_els_flush_cmd(struct lpfc_vport *vport)
已提交
5229
{
5230
	LIST_HEAD(completions);
J
James Smart 已提交
5231
	struct lpfc_hba  *phba = vport->phba;
5232
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
已提交
5233 5234
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;
5235 5236

	lpfc_fabric_abort_vport(vport);
已提交
5237

J
James Smart 已提交
5238
	spin_lock_irq(&phba->hbalock);
已提交
5239 5240 5241 5242 5243 5244 5245 5246
	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 */
5247 5248 5249 5250
		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
5251 5252
			continue;

J
James Smart 已提交
5253 5254 5255
		if (piocb->vport != vport)
			continue;

5256
		list_move_tail(&piocb->list, &completions);
5257
		pring->txq_cnt--;
已提交
5258 5259 5260 5261 5262 5263 5264
	}

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

J
James Smart 已提交
5265 5266 5267
		if (piocb->vport != vport)
			continue;

5268
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
5269
	}
J
James Smart 已提交
5270
	spin_unlock_irq(&phba->hbalock);
5271

5272 5273 5274
	/* Cancell all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
5275

已提交
5276 5277 5278
	return;
}

5279
/**
5280
 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine is used to clean up all the outstanding ELS commands on a
 * @phba. It first aborts the @phba by invoking the lpfc_fabric_abort_hba()
 * routine. After that, it walks the ELS transmit queue to remove all the
 * IOCBs to the @phba other than the QUE_RING and ABORT/CLOSE IOCBs. For
 * the IOCBs with the completion callback function associated, the callback
 * function will be invoked with the status set to IOSTAT_LOCAL_REJECT and
 * un.ulpWord[4] set to IOERR_SLI_ABORTED. For IOCBs without the completion
 * callback function associated, the IOCB will simply be released. Finally,
 * it walks the ELS transmit completion queue to issue an abort IOCB to any
 * transmit completion queue IOCB that is not an IOCB from libdfc (i.e., the
 * management plane IOCBs that are not part of the discovery state machine)
 * out to HBA by invoking the lpfc_sli_issue_abort_iotag() routine.
 **/
5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324
void
lpfc_els_flush_all_cmd(struct lpfc_hba  *phba)
{
	LIST_HEAD(completions);
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;

	lpfc_fabric_abort_hba(phba);
	spin_lock_irq(&phba->hbalock);
	list_for_each_entry_safe(piocb, tmp_iocb, &pring->txq, list) {
		cmd = &piocb->iocb;
		if (piocb->iocb_flag & LPFC_IO_LIBDFC)
			continue;
		/* Do not flush out the QUE_RING and ABORT/CLOSE iocbs */
		if (cmd->ulpCommand == CMD_QUE_RING_BUF_CN ||
		    cmd->ulpCommand == CMD_QUE_RING_BUF64_CN ||
		    cmd->ulpCommand == CMD_CLOSE_XRI_CN ||
		    cmd->ulpCommand == CMD_ABORT_XRI_CN)
			continue;
		list_move_tail(&piocb->list, &completions);
		pring->txq_cnt--;
	}
	list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) {
		if (piocb->iocb_flag & LPFC_IO_LIBDFC)
			continue;
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
	}
	spin_unlock_irq(&phba->hbalock);
5325 5326 5327 5328 5329

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

5330 5331 5332
	return;
}

5333
/**
5334
 * lpfc_send_els_failure_event - Posts an ELS command failure event
5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375
 * @phba: Pointer to hba context object.
 * @cmdiocbp: Pointer to command iocb which reported error.
 * @rspiocbp: Pointer to response iocb which reported error.
 *
 * This function sends an event when there is an ELS command
 * failure.
 **/
void
lpfc_send_els_failure_event(struct lpfc_hba *phba,
			struct lpfc_iocbq *cmdiocbp,
			struct lpfc_iocbq *rspiocbp)
{
	struct lpfc_vport *vport = cmdiocbp->vport;
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_lsrjt_event lsrjt_event;
	struct lpfc_fabric_event_header fabric_event;
	struct ls_rjt stat;
	struct lpfc_nodelist *ndlp;
	uint32_t *pcmd;

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

	if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
		lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
		lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
		memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
			sizeof(struct lpfc_name));
		memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
			sizeof(struct lpfc_name));
		pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
			cmdiocbp->context2)->virt);
		lsrjt_event.command = *pcmd;
		stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
		lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
		lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
		fc_host_post_vendor_event(shost,
			fc_get_event_number(),
			sizeof(lsrjt_event),
			(char *)&lsrjt_event,
5376
			LPFC_NL_VENDOR_ID);
5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393
		return;
	}
	if ((rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY) ||
		(rspiocbp->iocb.ulpStatus == IOSTAT_FABRIC_BSY)) {
		fabric_event.event_type = FC_REG_FABRIC_EVENT;
		if (rspiocbp->iocb.ulpStatus == IOSTAT_NPORT_BSY)
			fabric_event.subcategory = LPFC_EVENT_PORT_BUSY;
		else
			fabric_event.subcategory = LPFC_EVENT_FABRIC_BUSY;
		memcpy(fabric_event.wwpn, &ndlp->nlp_portname,
			sizeof(struct lpfc_name));
		memcpy(fabric_event.wwnn, &ndlp->nlp_nodename,
			sizeof(struct lpfc_name));
		fc_host_post_vendor_event(shost,
			fc_get_event_number(),
			sizeof(fabric_event),
			(char *)&fabric_event,
5394
			LPFC_NL_VENDOR_ID);
5395 5396 5397 5398 5399 5400
		return;
	}

}

/**
5401
 * lpfc_send_els_event - Posts unsolicited els event
5402 5403 5404 5405 5406 5407 5408 5409 5410 5411
 * @vport: Pointer to vport object.
 * @ndlp: Pointer FC node object.
 * @cmd: ELS command code.
 *
 * This function posts an event when there is an incoming
 * unsolicited ELS command.
 **/
static void
lpfc_send_els_event(struct lpfc_vport *vport,
		    struct lpfc_nodelist *ndlp,
5412
		    uint32_t *payload)
5413
{
5414 5415
	struct lpfc_els_event_header *els_data = NULL;
	struct lpfc_logo_event *logo_data = NULL;
5416 5417
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438
	if (*payload == ELS_CMD_LOGO) {
		logo_data = kmalloc(sizeof(struct lpfc_logo_event), GFP_KERNEL);
		if (!logo_data) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				"0148 Failed to allocate memory "
				"for LOGO event\n");
			return;
		}
		els_data = &logo_data->header;
	} else {
		els_data = kmalloc(sizeof(struct lpfc_els_event_header),
			GFP_KERNEL);
		if (!els_data) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				"0149 Failed to allocate memory "
				"for ELS event\n");
			return;
		}
	}
	els_data->event_type = FC_REG_ELS_EVENT;
	switch (*payload) {
5439
	case ELS_CMD_PLOGI:
5440
		els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
5441 5442
		break;
	case ELS_CMD_PRLO:
5443
		els_data->subcategory = LPFC_EVENT_PRLO_RCV;
5444 5445
		break;
	case ELS_CMD_ADISC:
5446 5447 5448 5449 5450 5451 5452
		els_data->subcategory = LPFC_EVENT_ADISC_RCV;
		break;
	case ELS_CMD_LOGO:
		els_data->subcategory = LPFC_EVENT_LOGO_RCV;
		/* Copy the WWPN in the LOGO payload */
		memcpy(logo_data->logo_wwpn, &payload[2],
			sizeof(struct lpfc_name));
5453 5454
		break;
	default:
5455
		kfree(els_data);
5456 5457
		return;
	}
5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474
	memcpy(els_data->wwpn, &ndlp->nlp_portname, sizeof(struct lpfc_name));
	memcpy(els_data->wwnn, &ndlp->nlp_nodename, sizeof(struct lpfc_name));
	if (*payload == ELS_CMD_LOGO) {
		fc_host_post_vendor_event(shost,
			fc_get_event_number(),
			sizeof(struct lpfc_logo_event),
			(char *)logo_data,
			LPFC_NL_VENDOR_ID);
		kfree(logo_data);
	} else {
		fc_host_post_vendor_event(shost,
			fc_get_event_number(),
			sizeof(struct lpfc_els_event_header),
			(char *)els_data,
			LPFC_NL_VENDOR_ID);
		kfree(els_data);
	}
5475 5476 5477 5478 5479

	return;
}


5480
/**
5481
 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493
 * @phba: pointer to lpfc hba data structure.
 * @pring: pointer to a SLI ring.
 * @vport: pointer to a host virtual N_Port data structure.
 * @elsiocb: pointer to lpfc els command iocb data structure.
 *
 * This routine is used for processing the IOCB associated with a unsolicited
 * event. It first determines whether there is an existing ndlp that matches
 * the DID from the unsolicited IOCB. If not, it will create a new one with
 * the DID from the unsolicited IOCB. The ELS command from the unsolicited
 * IOCB is then used to invoke the proper routine and to set up proper state
 * of the discovery state machine.
 **/
5494 5495
static void
lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5496
		      struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
已提交
5497
{
5498
	struct Scsi_Host  *shost;
已提交
5499 5500
	struct lpfc_nodelist *ndlp;
	struct ls_rjt stat;
5501
	uint32_t *payload;
J
James Smart 已提交
5502
	uint32_t cmd, did, newnode, rjt_err = 0;
5503
	IOCB_t *icmd = &elsiocb->iocb;
已提交
5504

5505
	if (!vport || !(elsiocb->context2))
已提交
5506
		goto dropit;
J
James Smart 已提交
5507

已提交
5508
	newnode = 0;
5509 5510
	payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
	cmd = *payload;
5511
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
5512
		lpfc_post_buffer(phba, pring, 1);
已提交
5513

J
James Smart 已提交
5514 5515 5516 5517 5518
	did = icmd->un.rcvels.remoteID;
	if (icmd->ulpStatus) {
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV Unsol ELS:  status:x%x/x%x did:x%x",
			icmd->ulpStatus, icmd->un.ulpWord[4], did);
已提交
5519
		goto dropit;
J
James Smart 已提交
5520
	}
已提交
5521 5522

	/* Check to see if link went down during discovery */
5523
	if (lpfc_els_chk_latt(vport))
已提交
5524 5525
		goto dropit;

5526
	/* Ignore traffic received during vport shutdown. */
5527 5528 5529
	if (vport->load_flag & FC_UNLOADING)
		goto dropit;

J
James Smart 已提交
5530
	ndlp = lpfc_findnode_did(vport, did);
5531
	if (!ndlp) {
已提交
5532
		/* Cannot find existing Fabric ndlp, so allocate a new one */
5533
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5534
		if (!ndlp)
已提交
5535 5536
			goto dropit;

J
James Smart 已提交
5537
		lpfc_nlp_init(vport, ndlp, did);
5538
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
已提交
5539
		newnode = 1;
5540
		if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
已提交
5541
			ndlp->nlp_type |= NLP_FABRIC;
5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		ndlp = lpfc_enable_node(vport, ndlp,
					NLP_STE_UNUSED_NODE);
		if (!ndlp)
			goto dropit;
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
		newnode = 1;
		if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
			ndlp->nlp_type |= NLP_FABRIC;
	} else if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
		/* This is similar to the new node path */
		ndlp = lpfc_nlp_get(ndlp);
		if (!ndlp)
			goto dropit;
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
		newnode = 1;
5558
	}
已提交
5559 5560

	phba->fc_stat.elsRcvFrame++;
5561

5562
	elsiocb->context1 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
5563
	elsiocb->vport = vport;
已提交
5564 5565 5566 5567 5568

	if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
		cmd &= ELS_CMD_MASK;
	}
	/* ELS command <elsCmd> received from NPORT <did> */
5569 5570 5571
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0112 ELS command x%x received from NPORT x%x "
			 "Data: x%x\n", cmd, did, vport->port_state);
已提交
5572 5573
	switch (cmd) {
	case ELS_CMD_PLOGI:
J
James Smart 已提交
5574 5575 5576 5577
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV PLOGI:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5578
		phba->fc_stat.elsRcvPLOGI++;
J
James Smart 已提交
5579 5580
		ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);

5581
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5582
		if (vport->port_state < LPFC_DISC_AUTH) {
5583 5584 5585 5586 5587 5588 5589 5590 5591
			if (!(phba->pport->fc_flag & FC_PT2PT) ||
				(phba->pport->fc_flag & FC_PT2PT_PLOGI)) {
				rjt_err = LSRJT_UNABLE_TPC;
				break;
			}
			/* We get here, and drop thru, if we are PT2PT with
			 * another NPort and the other side has initiated
			 * the PLOGI before responding to our FLOGI.
			 */
已提交
5592
		}
5593 5594 5595 5596 5597 5598

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

J
James Smart 已提交
5599 5600
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PLOGI);
J
James Smart 已提交
5601

已提交
5602 5603
		break;
	case ELS_CMD_FLOGI:
J
James Smart 已提交
5604 5605 5606 5607
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV FLOGI:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5608
		phba->fc_stat.elsRcvFLOGI++;
5609
		lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
5610
		if (newnode)
5611
			lpfc_nlp_put(ndlp);
已提交
5612 5613
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
5614 5615 5616 5617
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV LOGO:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5618
		phba->fc_stat.elsRcvLOGO++;
5619
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5620
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5621
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5622 5623
			break;
		}
J
James Smart 已提交
5624
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
已提交
5625 5626
		break;
	case ELS_CMD_PRLO:
J
James Smart 已提交
5627 5628 5629 5630
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV PRLO:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5631
		phba->fc_stat.elsRcvPRLO++;
5632
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5633
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5634
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5635 5636
			break;
		}
J
James Smart 已提交
5637
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
已提交
5638 5639 5640
		break;
	case ELS_CMD_RSCN:
		phba->fc_stat.elsRcvRSCN++;
5641
		lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
5642
		if (newnode)
5643
			lpfc_nlp_put(ndlp);
已提交
5644 5645
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
5646 5647 5648 5649
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV ADISC:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

5650
		lpfc_send_els_event(vport, ndlp, payload);
已提交
5651
		phba->fc_stat.elsRcvADISC++;
J
James Smart 已提交
5652
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5653
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5654 5655
			break;
		}
J
James Smart 已提交
5656 5657
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_ADISC);
已提交
5658 5659
		break;
	case ELS_CMD_PDISC:
J
James Smart 已提交
5660 5661 5662 5663
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV PDISC:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5664
		phba->fc_stat.elsRcvPDISC++;
J
James Smart 已提交
5665
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5666
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5667 5668
			break;
		}
J
James Smart 已提交
5669 5670
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PDISC);
已提交
5671 5672
		break;
	case ELS_CMD_FARPR:
J
James Smart 已提交
5673 5674 5675 5676
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV FARPR:       did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5677
		phba->fc_stat.elsRcvFARPR++;
J
James Smart 已提交
5678
		lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
已提交
5679 5680
		break;
	case ELS_CMD_FARP:
J
James Smart 已提交
5681 5682 5683 5684
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV FARP:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5685
		phba->fc_stat.elsRcvFARP++;
J
James Smart 已提交
5686
		lpfc_els_rcv_farp(vport, elsiocb, ndlp);
已提交
5687 5688
		break;
	case ELS_CMD_FAN:
J
James Smart 已提交
5689 5690 5691 5692
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV FAN:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5693
		phba->fc_stat.elsRcvFAN++;
J
James Smart 已提交
5694
		lpfc_els_rcv_fan(vport, elsiocb, ndlp);
已提交
5695 5696
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
5697 5698 5699 5700
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV PRLI:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5701
		phba->fc_stat.elsRcvPRLI++;
J
James Smart 已提交
5702
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5703
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5704 5705
			break;
		}
J
James Smart 已提交
5706
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
已提交
5707
		break;
5708
	case ELS_CMD_LIRR:
J
James Smart 已提交
5709 5710 5711 5712
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV LIRR:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

5713
		phba->fc_stat.elsRcvLIRR++;
J
James Smart 已提交
5714
		lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
5715
		if (newnode)
5716
			lpfc_nlp_put(ndlp);
5717 5718
		break;
	case ELS_CMD_RPS:
J
James Smart 已提交
5719 5720 5721 5722
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RPS:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

5723
		phba->fc_stat.elsRcvRPS++;
J
James Smart 已提交
5724
		lpfc_els_rcv_rps(vport, elsiocb, ndlp);
5725
		if (newnode)
5726
			lpfc_nlp_put(ndlp);
5727 5728
		break;
	case ELS_CMD_RPL:
J
James Smart 已提交
5729 5730 5731 5732
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RPL:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

5733
		phba->fc_stat.elsRcvRPL++;
J
James Smart 已提交
5734
		lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
5735
		if (newnode)
5736
			lpfc_nlp_put(ndlp);
5737
		break;
已提交
5738
	case ELS_CMD_RNID:
J
James Smart 已提交
5739 5740 5741 5742
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RNID:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

已提交
5743
		phba->fc_stat.elsRcvRNID++;
J
James Smart 已提交
5744
		lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
5745
		if (newnode)
5746
			lpfc_nlp_put(ndlp);
已提交
5747
		break;
5748 5749 5750 5751 5752 5753 5754 5755 5756 5757
	case ELS_CMD_RRQ:
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RRQ:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

		phba->fc_stat.elsRcvRRQ++;
		lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
		if (newnode)
			lpfc_nlp_put(ndlp);
		break;
已提交
5758
	default:
J
James Smart 已提交
5759 5760 5761 5762
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV ELS cmd:     cmd:x%x did:x%x/ste:x%x",
			cmd, did, vport->port_state);

已提交
5763
		/* Unsupported ELS command, reject */
J
James Smart 已提交
5764
		rjt_err = LSRJT_INVALID_CMD;
已提交
5765 5766

		/* Unknown ELS command <elsCmd> received from NPORT <did> */
5767 5768 5769
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0115 Unknown ELS command x%x "
				 "received from NPORT x%x\n", cmd, did);
5770
		if (newnode)
5771
			lpfc_nlp_put(ndlp);
已提交
5772 5773 5774 5775 5776
		break;
	}

	/* check if need to LS_RJT received ELS cmd */
	if (rjt_err) {
5777
		memset(&stat, 0, sizeof(stat));
J
James Smart 已提交
5778
		stat.un.b.lsRjtRsnCode = rjt_err;
5779
		stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
J
James Smart 已提交
5780 5781
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
			NULL);
已提交
5782 5783
	}

5784 5785
	lpfc_nlp_put(elsiocb->context1);
	elsiocb->context1 = NULL;
5786 5787 5788
	return;

dropit:
5789
	if (vport && !(vport->load_flag & FC_UNLOADING))
5790 5791
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
			"0111 Dropping received ELS cmd "
5792
			"Data: x%x x%x x%x\n",
5793
			icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
5794 5795 5796
	phba->fc_stat.elsRcvDrop++;
}

5797
/**
5798
 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809
 * @phba: pointer to lpfc hba data structure.
 * @vpi: host virtual N_Port identifier.
 *
 * This routine finds a vport on a HBA (referred by @phba) through a
 * @vpi. The function walks the HBA's vport list and returns the address
 * of the vport with the matching @vpi.
 *
 * Return code
 *    NULL - No vport with the matching @vpi found
 *    Otherwise - Address to the vport with the matching @vpi.
 **/
5810
struct lpfc_vport *
5811 5812 5813
lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
{
	struct lpfc_vport *vport;
5814
	unsigned long flags;
5815

5816
	spin_lock_irqsave(&phba->hbalock, flags);
5817
	list_for_each_entry(vport, &phba->port_list, listentry) {
5818 5819
		if (vport->vpi == vpi) {
			spin_unlock_irqrestore(&phba->hbalock, flags);
5820
			return vport;
5821
		}
5822
	}
5823
	spin_unlock_irqrestore(&phba->hbalock, flags);
5824 5825
	return NULL;
}
5826

5827
/**
5828
 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
5829 5830 5831 5832 5833 5834 5835 5836 5837 5838
 * @phba: pointer to lpfc hba data structure.
 * @pring: pointer to a SLI ring.
 * @elsiocb: pointer to lpfc els iocb data structure.
 *
 * This routine is used to process an unsolicited event received from a SLI
 * (Service Level Interface) ring. The actual processing of the data buffer
 * associated with the unsolicited event is done by invoking the routine
 * lpfc_els_unsol_buffer() after properly set up the iocb buffer from the
 * SLI ring on which the unsolicited event was received.
 **/
5839 5840 5841 5842 5843 5844 5845
void
lpfc_els_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
		     struct lpfc_iocbq *elsiocb)
{
	struct lpfc_vport *vport = phba->pport;
	IOCB_t *icmd = &elsiocb->iocb;
	dma_addr_t paddr;
5846 5847 5848
	struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
	struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;

5849
	elsiocb->context1 = NULL;
5850 5851
	elsiocb->context2 = NULL;
	elsiocb->context3 = NULL;
5852

5853 5854 5855 5856
	if (icmd->ulpStatus == IOSTAT_NEED_BUFFER) {
		lpfc_sli_hbqbuf_add_hbqs(phba, LPFC_ELS_HBQ);
	} else if (icmd->ulpStatus == IOSTAT_LOCAL_REJECT &&
	    (icmd->un.ulpWord[4] & 0xff) == IOERR_RCV_BUFFER_WAITING) {
5857 5858
		phba->fc_stat.NoRcvBuf++;
		/* Not enough posted buffers; Try posting more buffers */
5859
		if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
5860
			lpfc_post_buffer(phba, pring, 0);
5861 5862 5863
		return;
	}

5864 5865 5866 5867 5868
	if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
	    (icmd->ulpCommand == CMD_IOCB_RCV_ELS64_CX ||
	     icmd->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
		if (icmd->unsli3.rcvsli3.vpi == 0xffff)
			vport = phba->pport;
5869 5870 5871
		else
			vport = lpfc_find_vport_by_vpid(phba,
				icmd->unsli3.rcvsli3.vpi - phba->vpi_base);
5872
	}
5873 5874 5875
	/* If there are no BDEs associated
	 * with this IOCB, there is nothing to do.
	 */
5876 5877 5878
	if (icmd->ulpBdeCount == 0)
		return;

5879 5880 5881
	/* type of ELS cmd is first 32bit word
	 * in packet
	 */
5882
	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
5883
		elsiocb->context2 = bdeBuf1;
5884 5885 5886
	} else {
		paddr = getPaddr(icmd->un.cont64[0].addrHigh,
				 icmd->un.cont64[0].addrLow);
5887 5888
		elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
							     paddr);
5889 5890
	}

5891 5892 5893 5894 5895
	lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
	/*
	 * The different unsolicited event handlers would tell us
	 * if they are done with "mp" by setting context2 to NULL.
	 */
已提交
5896
	if (elsiocb->context2) {
5897 5898
		lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
		elsiocb->context2 = NULL;
已提交
5899
	}
5900 5901

	/* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
5902
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
5903
	    icmd->ulpBdeCount == 2) {
5904 5905
		elsiocb->context2 = bdeBuf2;
		lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5906 5907
		/* free mp if we are done with it */
		if (elsiocb->context2) {
5908 5909 5910 5911 5912 5913
			lpfc_in_buf_free(phba, elsiocb->context2);
			elsiocb->context2 = NULL;
		}
	}
}

5914
/**
5915
 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926
 * @phba: pointer to lpfc hba data structure.
 * @vport: pointer to a virtual N_Port data structure.
 *
 * This routine issues a Port Login (PLOGI) to the Name Server with
 * State Change Request (SCR) for a @vport. This routine will create an
 * ndlp for the Name Server associated to the @vport if such node does
 * not already exist. The PLOGI to Name Server is issued by invoking the
 * lpfc_issue_els_plogi() routine. If Fabric-Device Management Interface
 * (FDMI) is configured to the @vport, a FDMI node will be created and
 * the PLOGI to FDMI is issued by invoking lpfc_issue_els_plogi() routine.
 **/
5927 5928 5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940
void
lpfc_do_scr_ns_plogi(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
	struct lpfc_nodelist *ndlp, *ndlp_fdmi;

	ndlp = lpfc_findnode_did(vport, NameServer_DID);
	if (!ndlp) {
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp) {
			if (phba->fc_topology == TOPOLOGY_LOOP) {
				lpfc_disc_start(vport);
				return;
			}
			lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5941 5942
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					 "0251 NameServer login: no memory\n");
5943 5944 5945
			return;
		}
		lpfc_nlp_init(vport, ndlp, NameServer_DID);
5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957
	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
		if (!ndlp) {
			if (phba->fc_topology == TOPOLOGY_LOOP) {
				lpfc_disc_start(vport);
				return;
			}
			lpfc_vport_set_state(vport, FC_VPORT_FAILED);
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					"0348 NameServer login: node freed\n");
			return;
		}
5958
	}
5959
	ndlp->nlp_type |= NLP_FABRIC;
5960 5961 5962 5963 5964

	lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);

	if (lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0)) {
		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
5965 5966
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0252 Cannot issue NameServer login\n");
5967 5968 5969
		return;
	}

5970
	if (vport->cfg_fdmi_on) {
5971 5972 5973 5974 5975
		ndlp_fdmi = mempool_alloc(phba->nlp_mem_pool,
					  GFP_KERNEL);
		if (ndlp_fdmi) {
			lpfc_nlp_init(vport, ndlp_fdmi, FDMI_DID);
			ndlp_fdmi->nlp_type |= NLP_FABRIC;
5976 5977
			lpfc_nlp_set_state(vport, ndlp_fdmi,
				NLP_STE_PLOGI_ISSUE);
5978 5979 5980 5981 5982 5983 5984
			lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
					     0);
		}
	}
	return;
}

5985
/**
5986
 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
5987 5988 5989 5990 5991 5992 5993 5994 5995 5996
 * @phba: pointer to lpfc hba data structure.
 * @pmb: pointer to the driver internal queue element for mailbox command.
 *
 * This routine is the completion callback function to register new vport
 * mailbox command. If the new vport mailbox command completes successfully,
 * the fabric registration login shall be performed on physical port (the
 * new vport created is actually a physical port, with VPI 0) or the port
 * login to Name Server for State Change Request (SCR) will be performed
 * on virtual port (real virtual port, with VPI greater than 0).
 **/
5997 5998 5999 6000 6001 6002
static void
lpfc_cmpl_reg_new_vport(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
	struct lpfc_vport *vport = pmb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2;
6003
	MAILBOX_t *mb = &pmb->u.mb;
6004
	int rc;
6005

6006
	spin_lock_irq(shost->host_lock);
6007
	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
6008
	spin_unlock_irq(shost->host_lock);
6009 6010

	if (mb->mbxStatus) {
6011 6012 6013
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				 "0915 Register VPI failed: 0x%x\n",
				 mb->mbxStatus);
6014 6015 6016 6017

		switch (mb->mbxStatus) {
		case 0x11:	/* unsupported feature */
		case 0x9603:	/* max_vpi exceeded */
6018
		case 0x9602:	/* Link event since CLEAR_LA */
6019 6020 6021 6022 6023 6024 6025
			/* giving up on vport registration */
			lpfc_vport_set_state(vport, FC_VPORT_FAILED);
			spin_lock_irq(shost->host_lock);
			vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
			spin_unlock_irq(shost->host_lock);
			lpfc_can_disctmo(vport);
			break;
6026 6027 6028 6029 6030 6031 6032 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 6045
		/* If reg_vpi fail with invalid VPI status, re-init VPI */
		case 0x20:
			spin_lock_irq(shost->host_lock);
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
			spin_unlock_irq(shost->host_lock);
			lpfc_init_vpi(phba, pmb, vport->vpi);
			pmb->vport = vport;
			pmb->mbox_cmpl = lpfc_init_vpi_cmpl;
			rc = lpfc_sli_issue_mbox(phba, pmb,
				MBX_NOWAIT);
			if (rc == MBX_NOT_FINISHED) {
				lpfc_printf_vlog(vport,
					KERN_ERR, LOG_MBOX,
					"2732 Failed to issue INIT_VPI"
					" mailbox command\n");
			} else {
				lpfc_nlp_put(ndlp);
				return;
			}

6046 6047 6048
		default:
			/* Try to recover from this error */
			lpfc_mbx_unreg_vpi(vport);
6049
			spin_lock_irq(shost->host_lock);
6050
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6051
			spin_unlock_irq(shost->host_lock);
6052 6053 6054 6055
			if (vport->port_type == LPFC_PHYSICAL_PORT)
				lpfc_initial_flogi(vport);
			else
				lpfc_initial_fdisc(vport);
6056 6057 6058
			break;
		}
	} else {
6059
		spin_lock_irq(shost->host_lock);
6060
		vport->vpi_state |= LPFC_VPI_REGISTERED;
6061 6062
		spin_unlock_irq(shost->host_lock);
		if (vport == phba->pport) {
6063 6064
			if (phba->sli_rev < LPFC_SLI_REV4)
				lpfc_issue_fabric_reglogin(vport);
6065
			else {
6066 6067 6068 6069 6070 6071
				/*
				 * If the physical port is instantiated using
				 * FDISC, do not start vport discovery.
				 */
				if (vport->port_state != LPFC_FDISC)
					lpfc_start_fdiscs(phba);
6072 6073 6074
				lpfc_do_scr_ns_plogi(phba, vport);
			}
		} else
6075 6076
			lpfc_do_scr_ns_plogi(phba, vport);
	}
6077 6078 6079 6080 6081 6082

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

6083 6084 6085 6086
	mempool_free(pmb, phba->mbox_mem_pool);
	return;
}

6087
/**
6088
 * lpfc_register_new_vport - Register a new vport with a HBA
6089 6090 6091 6092 6093 6094 6095
 * @phba: pointer to lpfc hba data structure.
 * @vport: pointer to a host virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine registers the @vport as a new virtual port with a HBA.
 * It is done through a registering vpi mailbox command.
 **/
6096
void
6097 6098 6099
lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
			struct lpfc_nodelist *ndlp)
{
6100
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6101 6102 6103 6104
	LPFC_MBOXQ_t *mbox;

	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (mbox) {
6105
		lpfc_reg_vpi(vport, mbox);
6106 6107 6108
		mbox->vport = vport;
		mbox->context2 = lpfc_nlp_get(ndlp);
		mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
6109
		if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
6110
		    == MBX_NOT_FINISHED) {
6111 6112 6113 6114
			/* mailbox command not success, decrement ndlp
			 * reference count for this command
			 */
			lpfc_nlp_put(ndlp);
6115 6116
			mempool_free(mbox, phba->mbox_mem_pool);

6117 6118
			lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				"0253 Register VPI: Can't send mbox\n");
6119
			goto mbox_err_exit;
6120 6121
		}
	} else {
6122 6123
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				 "0254 Register VPI: no memory\n");
6124
		goto mbox_err_exit;
6125
	}
6126 6127 6128 6129 6130 6131 6132 6133
	return;

mbox_err_exit:
	lpfc_vport_set_state(vport, FC_VPORT_FAILED);
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
	spin_unlock_irq(shost->host_lock);
	return;
6134 6135
}

6136
/**
6137
 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
6138 6139
 * @phba: pointer to lpfc hba data structure.
 *
6140
 * This routine cancels the retry delay timers to all the vports.
6141 6142
 **/
void
6143
lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
6144 6145 6146 6147
{
	struct lpfc_vport **vports;
	struct lpfc_nodelist *ndlp;
	uint32_t link_state;
6148
	int i;
6149 6150 6151 6152 6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165

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

	vports = lpfc_create_vport_work_array(phba);

	if (vports) {
		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
			ndlp = lpfc_findnode_did(vports[i], Fabric_DID);
			if (ndlp)
				lpfc_cancel_retry_delay_tmo(vports[i], ndlp);
			lpfc_els_flush_cmd(vports[i]);
		}
		lpfc_destroy_vport_work_array(phba, vports);
	}
6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183
}

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

	/* Cancel the all vports retry delay retry timers */
	lpfc_cancel_all_vport_retry_delay_timer(phba);
6184 6185 6186 6187 6188 6189 6190 6191 6192 6193 6194 6195 6196 6197 6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221

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

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

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

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

6222
/**
6223
 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
6224 6225 6226 6227 6228 6229 6230 6231 6232 6233 6234 6235 6236 6237 6238 6239 6240 6241
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function to a Fabric Discover
 * (FDISC) ELS command. Since all the FDISC ELS commands are issued
 * single threaded, each FDISC completion callback function will reset
 * the discovery timer for all vports such that the timers will not get
 * unnecessary timeout. The function checks the FDISC IOCB status. If error
 * detected, the vport will be set to FC_VPORT_FAILED state. Otherwise,the
 * vport will set to FC_VPORT_ACTIVE state. It then checks whether the DID
 * assigned to the vport has been changed with the completion of the FDISC
 * command. If so, both RPI (Remote Port Index) and VPI (Virtual Port Index)
 * are unregistered from the HBA, and then the lpfc_register_new_vport()
 * routine is invoked to register new vport with the HBA. Otherwise, the
 * lpfc_do_scr_ns_plogi() routine is invoked to issue a PLOGI to the Name
 * Server for State Change Request (SCR).
 **/
6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252 6253
static void
lpfc_cmpl_els_fdisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
{
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_nodelist *np;
	struct lpfc_nodelist *next_np;
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_iocbq *piocb;

6254 6255 6256 6257
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0123 FDISC completes. x%x/x%x prevDID: x%x\n",
			 irsp->ulpStatus, irsp->un.ulpWord[4],
			 vport->fc_prevDID);
6258 6259 6260 6261 6262 6263 6264 6265
	/* Since all FDISCs are being single threaded, we
	 * must reset the discovery timer for ALL vports
	 * waiting to send FDISC when one completes.
	 */
	list_for_each_entry(piocb, &phba->fabric_iocb_list, list) {
		lpfc_set_disctmo(piocb->vport);
	}

J
James Smart 已提交
6266 6267 6268 6269
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"FDISC cmpl:      status:x%x/x%x prevdid:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4], vport->fc_prevDID);

6270
	if (irsp->ulpStatus) {
6271 6272 6273 6274 6275 6276

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

6277 6278 6279 6280
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
			goto out;
		/* FDISC failed */
6281
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6282
				 "0126 FDISC failed. (%d/%d)\n",
6283
				 irsp->ulpStatus, irsp->un.ulpWord[4]);
6284 6285 6286
		goto fdisc_failed;
	}
	spin_lock_irq(shost->host_lock);
6287
	vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
6288 6289 6290 6291
	vport->fc_flag |= FC_FABRIC;
	if (vport->phba->fc_topology == TOPOLOGY_LOOP)
		vport->fc_flag |=  FC_PUBLIC_LOOP;
	spin_unlock_irq(shost->host_lock);
6292

6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306
	vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
	lpfc_vport_set_state(vport, FC_VPORT_ACTIVE);
	if ((vport->fc_prevDID != vport->fc_myDID) &&
		!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
		/* If our NportID changed, we need to ensure all
		 * remaining NPORTs get unreg_login'ed so we can
		 * issue unreg_vpi.
		 */
		list_for_each_entry_safe(np, next_np,
			&vport->fc_nodes, nlp_listp) {
			if (!NLP_CHK_NODE_ACT(ndlp) ||
			    (np->nlp_state != NLP_STE_NPR_NODE) ||
			    !(np->nlp_flag & NLP_NPR_ADISC))
				continue;
6307
			spin_lock_irq(shost->host_lock);
6308
			np->nlp_flag &= ~NLP_NPR_ADISC;
6309
			spin_unlock_irq(shost->host_lock);
6310
			lpfc_unreg_rpi(vport, np);
6311
		}
6312 6313 6314
		lpfc_mbx_unreg_vpi(vport);
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6315 6316
		if (phba->sli_rev == LPFC_SLI_REV4)
			vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
6317
		spin_unlock_irq(shost->host_lock);
6318 6319
	}

6320 6321 6322
	if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
		lpfc_issue_init_vpi(vport);
	else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
6323 6324 6325 6326 6327 6328 6329 6330 6331
		lpfc_register_new_vport(phba, vport, ndlp);
	else
		lpfc_do_scr_ns_plogi(phba, vport);
	goto out;
fdisc_failed:
	lpfc_vport_set_state(vport, FC_VPORT_FAILED);
	/* Cancel discovery timer */
	lpfc_can_disctmo(vport);
	lpfc_nlp_put(ndlp);
6332 6333 6334 6335
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

6336
/**
6337
 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
6338 6339 6340 6341 6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352 6353 6354 6355
 * @vport: pointer to a virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 * @retry: number of retries to the command IOCB.
 *
 * This routine prepares and issues a Fabric Discover (FDISC) IOCB to
 * a remote node (@ndlp) off a @vport. It uses the lpfc_issue_fabric_iocb()
 * routine to issue the IOCB, which makes sure only one outstanding fabric
 * IOCB will be sent off HBA at any given time.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the FDISC ELS command.
 *
 * Return code
 *   0 - Successfully issued fdisc iocb command
 *   1 - Failed to issue fdisc iocb command
 **/
A
Adrian Bunk 已提交
6356
static int
6357 6358 6359 6360 6361 6362 6363 6364 6365 6366 6367 6368
lpfc_issue_els_fdisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
		     uint8_t retry)
{
	struct lpfc_hba *phba = vport->phba;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct serv_parm *sp;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int did = ndlp->nlp_DID;
	int rc;

6369
	vport->port_state = LPFC_FDISC;
6370 6371 6372 6373 6374
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
				     ELS_CMD_FDISC);
	if (!elsiocb) {
		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6375 6376
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0255 Issue FDISC: no IOCB\n");
6377 6378 6379 6380 6381 6382 6383
		return 1;
	}

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

6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394
	if  (phba->sli_rev == LPFC_SLI_REV4) {
		/* FDISC needs to be 1 for WQE VPI */
		elsiocb->iocb.ulpCt_h = (SLI4_CT_VPI >> 1) & 1;
		elsiocb->iocb.ulpCt_l = SLI4_CT_VPI & 1 ;
		/* Set the ulpContext to the vpi */
		elsiocb->iocb.ulpContext = vport->vpi + phba->vpi_base;
	} else {
		/* For FDISC, Let FDISC rsp set the NPortID for this VPI */
		icmd->ulpCt_h = 1;
		icmd->ulpCt_l = 0;
	}
6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 6410 6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421

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

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

	lpfc_set_disctmo(vport);

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

J
James Smart 已提交
6422 6423 6424 6425
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FDISC:     did:x%x",
		did, 0, 0);

6426 6427 6428 6429
	rc = lpfc_issue_fabric_iocb(phba, elsiocb);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
6430 6431
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0256 Issue FDISC: Cannot send IOCB\n");
6432 6433 6434 6435 6436 6437
		return 1;
	}
	lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
	return 0;
}

6438
/**
6439
 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the completion callback function to the issuing of a LOGO
 * ELS command off a vport. It frees the command IOCB and then decrement the
 * reference count held on ndlp for this completion function, indicating that
 * the reference to the ndlp is no long needed. Note that the
 * lpfc_els_free_iocb() routine decrements the ndlp reference held for this
 * callback function and an additional explicit ndlp reference decrementation
 * will trigger the actual release of the ndlp.
 **/
6452 6453 6454 6455 6456
static void
lpfc_cmpl_els_npiv_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
			struct lpfc_iocbq *rspiocb)
{
	struct lpfc_vport *vport = cmdiocb->vport;
J
James Smart 已提交
6457
	IOCB_t *irsp;
6458 6459
	struct lpfc_nodelist *ndlp;
	ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
J
James Smart 已提交
6460 6461 6462 6463 6464

	irsp = &rspiocb->iocb;
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"LOGO npiv cmpl:  status:x%x/x%x did:x%x",
		irsp->ulpStatus, irsp->un.ulpWord[4], irsp->un.rcvels.remoteID);
6465 6466 6467

	lpfc_els_free_iocb(phba, cmdiocb);
	vport->unreg_vpi_cmpl = VPORT_ERROR;
6468 6469 6470

	/* Trigger the release of the ndlp after logo */
	lpfc_nlp_put(ndlp);
6471 6472
}

6473
/**
6474
 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488
 * @vport: pointer to a virtual N_Port data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine issues a LOGO ELS command to an @ndlp off a @vport.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the LOGO ELS command.
 *
 * Return codes
 *   0 - Successfully issued logo off the @vport
 *   1 - Failed to issue logo off the @vport
 **/
6489 6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514
int
lpfc_issue_els_npiv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

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

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

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

J
James Smart 已提交
6515 6516 6517 6518
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue LOGO npiv  did:x%x flg:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, 0);

6519 6520 6521 6522
	elsiocb->iocb_cmpl = lpfc_cmpl_els_npiv_logo;
	spin_lock_irq(shost->host_lock);
	ndlp->nlp_flag |= NLP_LOGO_SND;
	spin_unlock_irq(shost->host_lock);
6523 6524
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
6525 6526 6527 6528 6529 6530 6531 6532 6533
		spin_lock_irq(shost->host_lock);
		ndlp->nlp_flag &= ~NLP_LOGO_SND;
		spin_unlock_irq(shost->host_lock);
		lpfc_els_free_iocb(phba, elsiocb);
		return 1;
	}
	return 0;
}

6534
/**
6535
 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
6536 6537 6538 6539 6540 6541 6542 6543 6544
 * @ptr: holder for the timer function associated data.
 *
 * This routine is invoked by the fabric iocb block timer after
 * timeout. It posts the fabric iocb block timeout event by setting the
 * WORKER_FABRIC_BLOCK_TMO bit to work port event bitmap and then invokes
 * lpfc_worker_wake_up() routine to wake up the worker thread. It is for
 * the worker thread to invoke the lpfc_unblock_fabric_iocbs() on the
 * posted event WORKER_FABRIC_BLOCK_TMO.
 **/
6545 6546 6547 6548 6549 6550
void
lpfc_fabric_block_timeout(unsigned long ptr)
{
	struct lpfc_hba  *phba = (struct lpfc_hba *) ptr;
	unsigned long iflags;
	uint32_t tmo_posted;
6551

6552 6553 6554 6555 6556 6557
	spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
	tmo_posted = phba->pport->work_port_events & WORKER_FABRIC_BLOCK_TMO;
	if (!tmo_posted)
		phba->pport->work_port_events |= WORKER_FABRIC_BLOCK_TMO;
	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);

6558 6559 6560
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
	return;
6561 6562
}

6563
/**
6564
 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
6565 6566 6567 6568 6569 6570 6571 6572
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine issues one fabric iocb from the driver internal list to
 * the HBA. It first checks whether it's ready to issue one fabric iocb to
 * the HBA (whether there is no outstanding fabric iocb). If so, it shall
 * remove one pending fabric iocb from the driver internal list and invokes
 * lpfc_sli_issue_iocb() routine to send the fabric iocb to the HBA.
 **/
6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583
static void
lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
{
	struct lpfc_iocbq *iocb;
	unsigned long iflags;
	int ret;
	IOCB_t *cmd;

repeat:
	iocb = NULL;
	spin_lock_irqsave(&phba->hbalock, iflags);
6584
	/* Post any pending iocb to the SLI layer */
6585 6586 6587 6588
	if (atomic_read(&phba->fabric_iocb_count) == 0) {
		list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
				 list);
		if (iocb)
6589
			/* Increment fabric iocb count to hold the position */
6590 6591 6592 6593 6594 6595 6596 6597
			atomic_inc(&phba->fabric_iocb_count);
	}
	spin_unlock_irqrestore(&phba->hbalock, iflags);
	if (iocb) {
		iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
		iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
		iocb->iocb_flag |= LPFC_IO_FABRIC;

J
James Smart 已提交
6598 6599 6600 6601
		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched1:   ste:x%x",
			iocb->vport->port_state, 0, 0);

6602
		ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6603 6604 6605 6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617 6618 6619 6620

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

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

	return;
}

6621
/**
6622
 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
6623 6624 6625 6626 6627 6628 6629
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine unblocks the  issuing fabric iocb command. The function
 * will clear the fabric iocb block bit and then invoke the routine
 * lpfc_resume_fabric_iocbs() to issue one of the pending fabric iocb
 * from the driver internal fabric iocb list.
 **/
6630 6631 6632 6633 6634 6635 6636 6637 6638
void
lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
{
	clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);

	lpfc_resume_fabric_iocbs(phba);
	return;
}

6639
/**
6640
 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
6641 6642 6643 6644 6645 6646 6647
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine blocks the issuing fabric iocb for a specified amount of
 * time (currently 100 ms). This is done by set the fabric iocb block bit
 * and set up a timeout timer for 100ms. When the block bit is set, no more
 * fabric iocb will be issued out of the HBA.
 **/
6648 6649 6650 6651 6652 6653
static void
lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
{
	int blocked;

	blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6654
	/* Start a timer to unblock fabric iocbs after 100ms */
6655 6656 6657 6658 6659 6660
	if (!blocked)
		mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );

	return;
}

6661
/**
6662
 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
6663 6664 6665 6666 6667 6668 6669 6670 6671 6672 6673
 * @phba: pointer to lpfc hba data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @rspiocb: pointer to lpfc response iocb data structure.
 *
 * This routine is the callback function that is put to the fabric iocb's
 * callback function pointer (iocb->iocb_cmpl). The original iocb's callback
 * function pointer has been stored in iocb->fabric_iocb_cmpl. This callback
 * function first restores and invokes the original iocb's callback function
 * and then invokes the lpfc_resume_fabric_iocbs() routine to issue the next
 * fabric bound iocb from the driver internal fabric iocb list onto the wire.
 **/
6674 6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687
static void
lpfc_cmpl_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
	struct lpfc_iocbq *rspiocb)
{
	struct ls_rjt stat;

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

	switch (rspiocb->iocb.ulpStatus) {
		case IOSTAT_NPORT_RJT:
		case IOSTAT_FABRIC_RJT:
			if (rspiocb->iocb.un.ulpWord[4] & RJT_UNAVAIL_TEMP) {
				lpfc_block_fabric_iocbs(phba);
6688
			}
6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714
			break;

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

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

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

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

	atomic_dec(&phba->fabric_iocb_count);
	if (!test_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags)) {
6715 6716
		/* Post any pending iocbs to HBA */
		lpfc_resume_fabric_iocbs(phba);
6717 6718 6719
	}
}

6720
/**
6721
 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742 6743
 * @phba: pointer to lpfc hba data structure.
 * @iocb: pointer to lpfc command iocb data structure.
 *
 * This routine is used as the top-level API for issuing a fabric iocb command
 * such as FLOGI and FDISC. To accommodate certain switch fabric, this driver
 * function makes sure that only one fabric bound iocb will be outstanding at
 * any given time. As such, this function will first check to see whether there
 * is already an outstanding fabric iocb on the wire. If so, it will put the
 * newly issued iocb onto the driver internal fabric iocb list, waiting to be
 * issued later. Otherwise, it will issue the iocb on the wire and update the
 * fabric iocb count it indicate that there is one fabric iocb on the wire.
 *
 * Note, this implementation has a potential sending out fabric IOCBs out of
 * order. The problem is caused by the construction of the "ready" boolen does
 * not include the condition that the internal fabric IOCB list is empty. As
 * such, it is possible a fabric IOCB issued by this routine might be "jump"
 * ahead of the fabric IOCBs in the internal list.
 *
 * Return code
 *   IOCB_SUCCESS - either fabric iocb put on the list or issued successfully
 *   IOCB_ERROR - failed to issue fabric iocb
 **/
A
Adrian Bunk 已提交
6744
static int
6745 6746 6747 6748 6749 6750 6751 6752 6753 6754 6755 6756 6757
lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
{
	unsigned long iflags;
	int ready;
	int ret;

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

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

6758 6759 6760
	if (ready)
		/* Increment fabric iocb count to hold the position */
		atomic_inc(&phba->fabric_iocb_count);
6761 6762 6763 6764 6765 6766
	spin_unlock_irqrestore(&phba->hbalock, iflags);
	if (ready) {
		iocb->fabric_iocb_cmpl = iocb->iocb_cmpl;
		iocb->iocb_cmpl = lpfc_cmpl_fabric_iocb;
		iocb->iocb_flag |= LPFC_IO_FABRIC;

J
James Smart 已提交
6767 6768 6769 6770
		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched2:   ste:x%x",
			iocb->vport->port_state, 0, 0);

6771
		ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6772 6773 6774 6775 6776 6777 6778 6779 6780 6781 6782 6783 6784 6785 6786 6787

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

6788
/**
6789
 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
6790 6791 6792 6793 6794 6795 6796 6797 6798
 * @vport: pointer to a virtual N_Port data structure.
 *
 * This routine aborts all the IOCBs associated with a @vport from the
 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
 * list, removes each IOCB associated with the @vport off the list, set the
 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
 * associated with the IOCB.
 **/
A
Adrian Bunk 已提交
6799
static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815
{
	LIST_HEAD(completions);
	struct lpfc_hba  *phba = vport->phba;
	struct lpfc_iocbq *tmp_iocb, *piocb;

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

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

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

6816 6817 6818
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
6819 6820
}

6821
/**
6822
 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
6823 6824 6825 6826 6827 6828 6829 6830 6831
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine aborts all the IOCBs associated with an @ndlp from the
 * driver internal fabric IOCB list. The list contains fabric IOCBs to be
 * issued to the ELS IOCB ring. This abort function walks the fabric IOCB
 * list, removes each IOCB associated with the @ndlp off the list, set the
 * status feild to IOSTAT_LOCAL_REJECT, and invokes the callback function
 * associated with the IOCB.
 **/
6832 6833 6834
void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
{
	LIST_HEAD(completions);
6835
	struct lpfc_hba  *phba = ndlp->phba;
6836 6837 6838 6839 6840 6841 6842 6843 6844
	struct lpfc_iocbq *tmp_iocb, *piocb;
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];

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

			list_move_tail(&piocb->list, &completions);
6845
		}
已提交
6846
	}
6847 6848
	spin_unlock_irq(&phba->hbalock);

6849 6850 6851
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
6852 6853
}

6854
/**
6855
 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
6856 6857 6858 6859 6860 6861 6862 6863 6864
 * @phba: pointer to lpfc hba data structure.
 *
 * This routine aborts all the IOCBs currently on the driver internal
 * fabric IOCB list. The list contains fabric IOCBs to be issued to the ELS
 * IOCB ring. This function takes the entire IOCB list off the fabric IOCB
 * list, removes IOCBs off the list, set the status feild to
 * IOSTAT_LOCAL_REJECT, and invokes the callback function associated with
 * the IOCB.
 **/
6865 6866 6867 6868 6869 6870 6871 6872
void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
{
	LIST_HEAD(completions);

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

6873 6874 6875
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
已提交
6876
}
6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893

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

6894 6895
	spin_lock_irqsave(&phba->hbalock, iflag);
	spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
6896 6897 6898 6899 6900 6901
	list_for_each_entry_safe(sglq_entry, sglq_next,
			&phba->sli4_hba.lpfc_abts_els_sgl_list, list) {
		if (sglq_entry->sli4_xritag == xri) {
			list_del(&sglq_entry->list);
			list_add_tail(&sglq_entry->list,
				&phba->sli4_hba.lpfc_sgl_list);
6902 6903
			sglq_entry->state = SGL_FREED;
			spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
6904 6905 6906 6907
			spin_unlock_irqrestore(&phba->hbalock, iflag);
			return;
		}
	}
6908 6909 6910 6911 6912 6913 6914 6915 6916
	spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
	sglq_entry = __lpfc_get_active_sglq(phba, xri);
	if (!sglq_entry || (sglq_entry->sli4_xritag != xri)) {
		spin_unlock_irqrestore(&phba->hbalock, iflag);
		return;
	}
	sglq_entry->state = SGL_XRI_ABORTED;
	spin_unlock_irqrestore(&phba->hbalock, iflag);
	return;
6917
}