lpfc_els.c 235.0 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>
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#include <linux/slab.h>
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#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
515 516 517 518 519

	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;

520
	phba->fc_edtovResol = sp->cmn.edtovResolution;
已提交
521 522 523
	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
524 525 526
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PUBLIC_LOOP;
		spin_unlock_irq(shost->host_lock);
已提交
527 528
	}

J
James Smart 已提交
529
	vport->fc_myDID = irsp->un.ulpWord[4] & Mask_DID;
已提交
530
	memcpy(&ndlp->nlp_portname, &sp->portName, sizeof(struct lpfc_name));
531
	memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof(struct lpfc_name));
已提交
532 533 534 535 536 537 538 539 540 541 542 543 544
	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));

545 546
	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
		if (sp->cmn.response_multiple_NPort) {
547 548 549 550 551
			lpfc_printf_vlog(vport, KERN_WARNING,
					 LOG_ELS | LOG_VPORT,
					 "1816 FLOGI NPIV supported, "
					 "response data 0x%x\n",
					 sp->cmn.response_multiple_NPort);
552 553 554
			phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
		} else {
			/* Because we asked f/w for NPIV it still expects us
555 556 557 558 559
			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");
560 561 562
			phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
		}
	}
已提交
563

564 565
	if ((vport->fc_prevDID != vport->fc_myDID) &&
		!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
已提交
566

567 568 569 570 571
		/* 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) {
572
			if (!NLP_CHK_NODE_ACT(np))
573
				continue;
574 575 576 577 578 579 580 581
			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);
		}
582
		lpfc_cleanup_pending_mbox(vport);
583 584
		if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
			lpfc_mbx_unreg_vpi(vport);
585
			spin_lock_irq(shost->host_lock);
586
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
587
			spin_unlock_irq(shost->host_lock);
588
		}
589 590 591 592 593 594 595 596 597
		/*
		 * 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);
		}
598 599 600 601 602 603 604 605
	} else if ((phba->sli_rev == LPFC_SLI_REV4) &&
		!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
			/*
			 * Driver needs to re-reg VPI in order for f/w
			 * to update the MAC address.
			 */
			lpfc_register_new_vport(phba, vport, ndlp);
			return 0;
606
	}
已提交
607

608 609 610 611 612 613 614 615 616 617
	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);
618 619
		if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
			(vport->vpi_state & LPFC_VPI_REGISTERED)) {
620 621
			lpfc_start_fdiscs(phba);
			lpfc_do_scr_ns_plogi(phba, vport);
622
		} else if (vport->fc_flag & FC_VFI_REGISTERED)
623
			lpfc_issue_init_vpi(vport);
624
		else
625
			lpfc_issue_reg_vfi(vport);
626
	}
已提交
627 628
	return 0;
}
629
/**
630
 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648
 * @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
649
static int
J
James Smart 已提交
650 651
lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
			  struct serv_parm *sp)
已提交
652
{
J
James Smart 已提交
653 654
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
655 656 657
	LPFC_MBOXQ_t *mbox;
	int rc;

J
James Smart 已提交
658 659 660
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
	spin_unlock_irq(shost->host_lock);
已提交
661 662 663

	phba->fc_edtov = FF_DEF_EDTOV;
	phba->fc_ratov = FF_DEF_RATOV;
J
James Smart 已提交
664
	rc = memcmp(&vport->fc_portname, &sp->portName,
665
		    sizeof(vport->fc_portname));
已提交
666 667
	if (rc >= 0) {
		/* This side will initiate the PLOGI */
J
James Smart 已提交
668 669 670
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PT2PT_PLOGI;
		spin_unlock_irq(shost->host_lock);
已提交
671 672 673 674 675 676 677 678

		/*
		 * 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
679
			vport->fc_myDID = PT2PT_LocalID;
已提交
680 681 682 683 684 685 686 687

		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;
688
		mbox->vport = vport;
689
		rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
已提交
690 691 692 693
		if (rc == MBX_NOT_FINISHED) {
			mempool_free(mbox, phba->mbox_mem_pool);
			goto fail;
		}
694 695 696
		/* Decrement ndlp reference count indicating that ndlp can be
		 * safely released when other references to it are done.
		 */
697
		lpfc_nlp_put(ndlp);
已提交
698

J
James Smart 已提交
699
		ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
已提交
700 701 702 703 704 705 706 707
		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
708
			lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
709 710 711 712 713
		} else if (!NLP_CHK_NODE_ACT(ndlp)) {
			ndlp = lpfc_enable_node(vport, ndlp,
						NLP_STE_UNUSED_NODE);
			if(!ndlp)
				goto fail;
已提交
714 715 716
		}

		memcpy(&ndlp->nlp_portname, &sp->portName,
J
James Smart 已提交
717
		       sizeof(struct lpfc_name));
已提交
718
		memcpy(&ndlp->nlp_nodename, &sp->nodeName,
J
James Smart 已提交
719
		       sizeof(struct lpfc_name));
720
		/* Set state will put ndlp onto node list if not already done */
J
James Smart 已提交
721 722
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
		spin_lock_irq(shost->host_lock);
已提交
723
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
724
		spin_unlock_irq(shost->host_lock);
725 726 727 728 729
	} 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.
		 */
730
		lpfc_nlp_put(ndlp);
已提交
731

732 733 734
	/* If we are pt2pt with another NPort, force NPIV off! */
	phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;

J
James Smart 已提交
735 736 737
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_PT2PT;
	spin_unlock_irq(shost->host_lock);
已提交
738 739

	/* Start discovery - this should just do CLEAR_LA */
J
James Smart 已提交
740
	lpfc_disc_start(vport);
已提交
741
	return 0;
742
fail:
已提交
743 744 745
	return -ENXIO;
}

746
/**
747
 * lpfc_cmpl_els_flogi - Completion callback function for flogi
748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768
 * @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
769
static void
770 771
lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
772
{
J
James Smart 已提交
773 774
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
775 776 777 778
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_nodelist *ndlp = cmdiocb->context1;
	struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
	struct serv_parm *sp;
779
	uint16_t fcf_index;
已提交
780 781 782
	int rc;

	/* Check to see if link went down during discovery */
J
James Smart 已提交
783
	if (lpfc_els_chk_latt(vport)) {
784 785 786
		/* One additional decrement on node reference count to
		 * trigger the release of the node
		 */
787
		lpfc_nlp_put(ndlp);
已提交
788 789 790
		goto out;
	}

J
James Smart 已提交
791 792 793 794 795
	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
796
	if (irsp->ulpStatus) {
797 798 799 800 801
		/*
		 * In case of FIP mode, perform round robin FCF failover
		 * due to new FCF discovery
		 */
		if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
802 803 804
		    (phba->fcf.fcf_flag & FCF_DISCOVERY) &&
		    (irsp->ulpStatus != IOSTAT_LOCAL_REJECT) &&
		    (irsp->un.ulpWord[4] != IOERR_SLI_ABORTED)) {
805 806
			lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
					"2611 FLOGI failed on registered "
807 808 809 810 811 812
					"FCF record fcf_index(%d), status: "
					"x%x/x%x, tmo:x%x, trying to perform "
					"round robin failover\n",
					phba->fcf.current_rec.fcf_indx,
					irsp->ulpStatus, irsp->un.ulpWord[4],
					irsp->ulpTimeout);
813 814 815 816 817 818 819 820 821
			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,
822 823 824 825 826
						"2760 Completed one round "
						"of FLOGI FCF round robin "
						"failover list, retry FLOGI "
						"on currently registered "
						"FCF index:%d\n",
827 828
						phba->fcf.current_rec.fcf_indx);
			} else {
829 830 831 832 833
				lpfc_printf_log(phba, KERN_INFO,
						LOG_FIP | LOG_ELS,
						"2794 FLOGI FCF round robin "
						"failover to FCF index x%x\n",
						fcf_index);
834 835
				rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba,
								   fcf_index);
836
				if (rc)
837 838 839 840 841 842 843 844
					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);
845
				else
846 847 848 849
					goto out;
			}
		}

850 851 852 853 854 855
		/* FLOGI failure */
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				"2858 FLOGI failure Status:x%x/x%x TMO:x%x\n",
				irsp->ulpStatus, irsp->un.ulpWord[4],
				irsp->ulpTimeout);

已提交
856
		/* Check for retry */
J
James Smart 已提交
857
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
858
			goto out;
J
James Smart 已提交
859

已提交
860
		/* FLOGI failed, so there is no fabric */
J
James Smart 已提交
861 862 863
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
		spin_unlock_irq(shost->host_lock);
已提交
864

865
		/* If private loop, then allow max outstanding els to be
已提交
866 867 868 869
		 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
		 * alpa map would take too long otherwise.
		 */
		if (phba->alpa_map[0] == 0) {
870
			vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
已提交
871 872 873
		}

		/* FLOGI failure */
874 875
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0100 FLOGI failure Status:x%x/x%x TMO:x%x\n",
876 877
				 irsp->ulpStatus, irsp->un.ulpWord[4],
				 irsp->ulpTimeout);
已提交
878 879
		goto flogifail;
	}
880 881
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
J
James Smart 已提交
882
	vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
883
	spin_unlock_irq(shost->host_lock);
已提交
884 885 886 887 888 889 890 891 892 893

	/*
	 * 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 */
894
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
895
			 "0101 FLOGI completes successfully "
896 897 898
			 "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
899

J
James Smart 已提交
900
	if (vport->port_state == LPFC_FLOGI) {
已提交
901 902 903 904 905
		/*
		 * 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
906
			rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
907
		else if (!(phba->hba_flag & HBA_FCOE_SUPPORT))
J
James Smart 已提交
908
			rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939
		else {
			lpfc_printf_vlog(vport, KERN_ERR,
				LOG_FIP | LOG_ELS,
				"2831 FLOGI response with cleared Fabric "
				"bit fcf_index 0x%x "
				"Switch Name %02x%02x%02x%02x%02x%02x%02x%02x "
				"Fabric Name "
				"%02x%02x%02x%02x%02x%02x%02x%02x\n",
				phba->fcf.current_rec.fcf_indx,
				phba->fcf.current_rec.switch_name[0],
				phba->fcf.current_rec.switch_name[1],
				phba->fcf.current_rec.switch_name[2],
				phba->fcf.current_rec.switch_name[3],
				phba->fcf.current_rec.switch_name[4],
				phba->fcf.current_rec.switch_name[5],
				phba->fcf.current_rec.switch_name[6],
				phba->fcf.current_rec.switch_name[7],
				phba->fcf.current_rec.fabric_name[0],
				phba->fcf.current_rec.fabric_name[1],
				phba->fcf.current_rec.fabric_name[2],
				phba->fcf.current_rec.fabric_name[3],
				phba->fcf.current_rec.fabric_name[4],
				phba->fcf.current_rec.fabric_name[5],
				phba->fcf.current_rec.fabric_name[6],
				phba->fcf.current_rec.fabric_name[7]);
			lpfc_nlp_put(ndlp);
			spin_lock_irq(&phba->hbalock);
			phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
			spin_unlock_irq(&phba->hbalock);
			goto out;
		}
940 941
		if (!rc) {
			/* Mark the FCF discovery process done */
942 943 944 945 946 947 948 949
			if (phba->hba_flag & HBA_FIP_SUPPORT)
				lpfc_printf_vlog(vport, KERN_INFO, LOG_FIP |
						LOG_ELS,
						"2769 FLOGI successful on FCF "
						"record: current_fcf_index:"
						"x%x, terminate FCF round "
						"robin failover process\n",
						phba->fcf.current_rec.fcf_indx);
950 951 952
			spin_lock_irq(&phba->hbalock);
			phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
			spin_unlock_irq(&phba->hbalock);
已提交
953
			goto out;
954
		}
已提交
955 956 957
	}

flogifail:
958
	lpfc_nlp_put(ndlp);
已提交
959

J
James Smart 已提交
960
	if (!lpfc_error_lost_link(irsp)) {
已提交
961
		/* FLOGI failed, so just use loop map to make discovery list */
J
James Smart 已提交
962
		lpfc_disc_list_loopmap(vport);
已提交
963 964

		/* Start discovery */
J
James Smart 已提交
965
		lpfc_disc_start(vport);
966 967 968 969 970 971
	} 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
972 973 974 975 976
	}
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

977
/**
978
 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998
 * @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
999
static int
J
James Smart 已提交
1000
lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1001 1002
		     uint8_t retry)
{
J
James Smart 已提交
1003
	struct lpfc_hba  *phba = vport->phba;
已提交
1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
	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];

1015
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
J
James Smart 已提交
1016 1017
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_FLOGI);
1018

1019
	if (!elsiocb)
1020
		return 1;
已提交
1021 1022 1023 1024 1025 1026

	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;
1027 1028
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041
	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;

1042 1043 1044 1045 1046 1047 1048
	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) {
1049 1050 1051 1052 1053 1054
		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
1055 1056 1057 1058 1059
	if (phba->fc_topology != TOPOLOGY_LOOP) {
		icmd->un.elsreq64.myID = 0;
		icmd->un.elsreq64.fl = 1;
	}

已提交
1060 1061
	tmo = phba->fc_ratov;
	phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
J
James Smart 已提交
1062
	lpfc_set_disctmo(vport);
已提交
1063 1064 1065 1066
	phba->fc_ratov = tmo;

	phba->fc_stat.elsXmitFLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
J
James Smart 已提交
1067 1068 1069 1070 1071

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

1072
	rc = lpfc_issue_fabric_iocb(phba, elsiocb);
已提交
1073 1074
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
1075
		return 1;
已提交
1076
	}
1077
	return 0;
已提交
1078 1079
}

1080
/**
1081
 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
 * @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
1092
 *   0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1093
 **/
已提交
1094
int
J
James Smart 已提交
1095
lpfc_els_abort_flogi(struct lpfc_hba *phba)
已提交
1096 1097 1098 1099 1100 1101 1102 1103
{
	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,
1104 1105
			"0201 Abort outstanding I/O on NPort x%x\n",
			Fabric_DID);
已提交
1106 1107 1108 1109 1110 1111 1112

	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
1113
	spin_lock_irq(&phba->hbalock);
已提交
1114 1115
	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
		icmd = &iocb->iocb;
J
James Smart 已提交
1116 1117
		if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
		    icmd->un.elsreq64.bdl.ulpIoTag32) {
已提交
1118
			ndlp = (struct lpfc_nodelist *)(iocb->context1);
1119 1120
			if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
			    (ndlp->nlp_DID == Fabric_DID))
1121
				lpfc_sli_issue_abort_iotag(phba, pring, iocb);
已提交
1122 1123
		}
	}
J
James Smart 已提交
1124
	spin_unlock_irq(&phba->hbalock);
已提交
1125 1126 1127 1128

	return 0;
}

1129
/**
1130
 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144
 * @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
1145
int
J
James Smart 已提交
1146
lpfc_initial_flogi(struct lpfc_vport *vport)
已提交
1147
{
J
James Smart 已提交
1148
	struct lpfc_hba *phba = vport->phba;
已提交
1149 1150
	struct lpfc_nodelist *ndlp;

1151 1152 1153
	vport->port_state = LPFC_FLOGI;
	lpfc_set_disctmo(vport);

1154
	/* First look for the Fabric ndlp */
J
James Smart 已提交
1155
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
1156
	if (!ndlp) {
已提交
1157
		/* Cannot find existing Fabric ndlp, so allocate a new one */
1158 1159 1160
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 0;
J
James Smart 已提交
1161
		lpfc_nlp_init(vport, ndlp, Fabric_DID);
1162 1163
		/* Set the node type */
		ndlp->nlp_type |= NLP_FABRIC;
1164 1165 1166 1167 1168 1169 1170
		/* 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
1171
	}
1172

1173
	if (lpfc_issue_els_flogi(vport, ndlp, 0)) {
1174 1175 1176
		/* This decrement of reference count to node shall kick off
		 * the release of the node.
		 */
1177
		lpfc_nlp_put(ndlp);
1178 1179
		return 0;
	}
1180
	return 1;
已提交
1181 1182
}

1183
/**
1184
 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198
 * @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
 **/
1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212
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);
1213 1214 1215 1216 1217 1218 1219
		/* 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;
1220
	}
1221

1222
	if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1223 1224 1225
		/* decrement node reference count to trigger the release of
		 * the node.
		 */
1226
		lpfc_nlp_put(ndlp);
1227
		return 0;
1228 1229 1230
	}
	return 1;
}
1231

1232
/**
1233
 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1234 1235 1236 1237 1238 1239 1240 1241 1242
 * @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.
 **/
1243
void
J
James Smart 已提交
1244
lpfc_more_plogi(struct lpfc_vport *vport)
已提交
1245 1246 1247
{
	int sentplogi;

J
James Smart 已提交
1248 1249
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1250 1251

	/* Continue discovery with <num_disc_nodes> PLOGIs to go */
1252 1253 1254 1255 1256
	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
1257
	/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1258 1259 1260 1261
	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
1262 1263 1264
	return;
}

1265
/**
1266
 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295
 * @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
 **/
1296
static struct lpfc_nodelist *
1297
lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1298 1299
			 struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
1300
	struct lpfc_vport    *vport = ndlp->vport;
1301
	struct lpfc_nodelist *new_ndlp;
1302 1303
	struct lpfc_rport_data *rdata;
	struct fc_rport *rport;
1304
	struct serv_parm *sp;
1305
	uint8_t  name[sizeof(struct lpfc_name)];
1306
	uint32_t rc, keepDID = 0;
1307 1308
	int  put_node;
	int  put_rport;
1309

J
James Smart 已提交
1310 1311 1312 1313 1314 1315
	/* 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;

1316
	sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1317
	memset(name, 0, sizeof(struct lpfc_name));
1318

1319
	/* Now we find out if the NPort we are logging into, matches the WWPN
1320 1321
	 * we have for that ndlp. If not, we have some work to do.
	 */
J
James Smart 已提交
1322
	new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1323

1324
	if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1325 1326 1327
		return ndlp;

	if (!new_ndlp) {
J
James Smart 已提交
1328 1329
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
1330 1331
		if (!rc)
			return ndlp;
1332 1333 1334
		new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
		if (!new_ndlp)
			return ndlp;
J
James Smart 已提交
1335
		lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1336
	} else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1337 1338 1339 1340
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
		if (!rc)
			return ndlp;
1341 1342 1343 1344
		new_ndlp = lpfc_enable_node(vport, new_ndlp,
						NLP_STE_UNUSED_NODE);
		if (!new_ndlp)
			return ndlp;
1345 1346 1347
		keepDID = new_ndlp->nlp_DID;
	} else
		keepDID = new_ndlp->nlp_DID;
1348

J
James Smart 已提交
1349
	lpfc_unreg_rpi(vport, new_ndlp);
1350
	new_ndlp->nlp_DID = ndlp->nlp_DID;
1351
	new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1352 1353 1354 1355 1356

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

1357
	/* Set state will put new_ndlp on to node list if not already done */
J
James Smart 已提交
1358
	lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1359

J
James Smart 已提交
1360
	/* Move this back to NPR state */
1361 1362 1363 1364
	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.
		 */
1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377

		/* 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;
		}
1378 1379 1380 1381 1382 1383 1384 1385 1386
		/* 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);
		}
1387

1388 1389
		/* Two ndlps cannot have the same did on the nodelist */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1390
		lpfc_drop_node(vport, ndlp);
1391
	}
1392
	else {
J
James Smart 已提交
1393
		lpfc_unreg_rpi(vport, ndlp);
1394 1395
		/* Two ndlps cannot have the same did */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1396
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418
		/* Since we are swapping the ndlp passed in with the new one
		 * and the did has already been swapped, copy over the
		 * state and names.
		 */
		memcpy(&new_ndlp->nlp_portname, &ndlp->nlp_portname,
			sizeof(struct lpfc_name));
		memcpy(&new_ndlp->nlp_nodename, &ndlp->nlp_nodename,
			sizeof(struct lpfc_name));
		new_ndlp->nlp_state = ndlp->nlp_state;
		/* Fix up the rport accordingly */
		rport = ndlp->rport;
		if (rport) {
			rdata = rport->dd_data;
			put_node = rdata->pnode != NULL;
			put_rport = ndlp->rport != NULL;
			rdata->pnode = NULL;
			ndlp->rport = NULL;
			if (put_node)
				lpfc_nlp_put(ndlp);
			if (put_rport)
				put_device(&rport->dev);
		}
1419
	}
1420 1421 1422
	return new_ndlp;
}

1423
/**
1424
 * lpfc_end_rscn - Check and handle more rscn for a vport
1425 1426 1427 1428 1429 1430 1431 1432 1433
 * @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.
 **/
1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454
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);
		}
	}
}

1455
/**
1456
 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474
 * @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
1475
static void
J
James Smart 已提交
1476 1477
lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1478
{
J
James Smart 已提交
1479 1480
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1481 1482
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
1483
	struct lpfc_dmabuf *prsp;
已提交
1484 1485 1486 1487 1488 1489
	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
1490 1491 1492 1493 1494
	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
1495
	ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1496
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1497 1498 1499 1500 1501 1502
		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);
1503
		goto out;
1504
	}
已提交
1505 1506 1507 1508

	/* 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
1509
	spin_lock_irq(shost->host_lock);
已提交
1510
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1511
	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
1512
	spin_unlock_irq(shost->host_lock);
已提交
1513 1514 1515
	rc   = 0;

	/* PLOGI completes to NPort <nlp_DID> */
1516 1517 1518 1519 1520
	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
1521
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1522 1523
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1524
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1525
		spin_unlock_irq(shost->host_lock);
已提交
1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537
		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
1538
				spin_lock_irq(shost->host_lock);
已提交
1539
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1540
				spin_unlock_irq(shost->host_lock);
已提交
1541 1542 1543
			}
			goto out;
		}
1544 1545 1546 1547 1548 1549
		/* PLOGI failed Don't print the vport to vport rjts */
		if (irsp->ulpStatus != IOSTAT_LS_RJT ||
			(((irsp->un.ulpWord[4]) >> 16 != LSRJT_INVALID_CMD) &&
			((irsp->un.ulpWord[4]) >> 16 != LSRJT_UNABLE_TPC)) ||
			(phba)->pport->cfg_log_verbose & LOG_ELS)
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
1550 1551 1552
				 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
1553
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1554
		if (lpfc_error_lost_link(irsp))
1555
			rc = NLP_STE_FREED_NODE;
1556
		else
J
James Smart 已提交
1557
			rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1558
						     NLP_EVT_CMPL_PLOGI);
已提交
1559 1560
	} else {
		/* Good status, call state machine */
1561
		prsp = list_entry(((struct lpfc_dmabuf *)
1562 1563 1564
				   cmdiocb->context2)->list.next,
				  struct lpfc_dmabuf, list);
		ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
J
James Smart 已提交
1565
		rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1566
					     NLP_EVT_CMPL_PLOGI);
已提交
1567 1568
	}

J
James Smart 已提交
1569
	if (disc && vport->num_disc_nodes) {
已提交
1570
		/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1571
		lpfc_more_plogi(vport);
已提交
1572

J
James Smart 已提交
1573 1574 1575 1576
		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
1577

J
James Smart 已提交
1578
			lpfc_can_disctmo(vport);
1579
			lpfc_end_rscn(vport);
已提交
1580 1581 1582 1583 1584 1585 1586 1587
		}
	}

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

1588
/**
1589
 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608
 * @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
1609
int
J
James Smart 已提交
1610
lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
已提交
1611
{
J
James Smart 已提交
1612
	struct lpfc_hba  *phba = vport->phba;
已提交
1613 1614
	struct serv_parm *sp;
	IOCB_t *icmd;
1615
	struct lpfc_nodelist *ndlp;
已提交
1616 1617 1618 1619
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
1620
	int ret;
已提交
1621 1622 1623

	psli = &phba->sli;

1624
	ndlp = lpfc_findnode_did(vport, did);
1625 1626
	if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
		ndlp = NULL;
1627

1628
	/* If ndlp is not NULL, we will bump the reference count on it */
1629
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1630
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
J
James Smart 已提交
1631
				     ELS_CMD_PLOGI);
1632 1633
	if (!elsiocb)
		return 1;
已提交
1634 1635 1636 1637 1638 1639

	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;
1640 1641
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
1642 1643
	sp = (struct serv_parm *) pcmd;

1644 1645 1646 1647 1648 1649 1650
	/*
	 * If we are a N-port connected to a Fabric, fix-up paramm's so logins
	 * to device on remote loops work.
	 */
	if ((vport->fc_flag & FC_FABRIC) && !(vport->fc_flag & FC_PUBLIC_LOOP))
		sp->cmn.altBbCredit = 1;

已提交
1651 1652 1653 1654 1655 1656
	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
1657 1658 1659 1660
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PLOGI:     did:x%x",
		did, 0, 0);

已提交
1661 1662
	phba->fc_stat.elsXmitPLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1663
	ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1664 1665

	if (ret == IOCB_ERROR) {
已提交
1666
		lpfc_els_free_iocb(phba, elsiocb);
1667
		return 1;
已提交
1668
	}
1669
	return 0;
已提交
1670 1671
}

1672
/**
1673
 * lpfc_cmpl_els_prli - Completion callback function for prli
1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684
 * @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
1685
static void
J
James Smart 已提交
1686 1687
lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
1688
{
J
James Smart 已提交
1689 1690
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1691 1692 1693 1694 1695 1696 1697 1698 1699 1700
	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
1701
	spin_lock_irq(shost->host_lock);
已提交
1702
	ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1703
	spin_unlock_irq(shost->host_lock);
已提交
1704

J
James Smart 已提交
1705 1706 1707 1708
	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
1709
	/* PRLI completes to NPort <nlp_DID> */
1710 1711 1712 1713 1714
	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
1715

J
James Smart 已提交
1716
	vport->fc_prli_sent--;
已提交
1717
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1718
	if (lpfc_els_chk_latt(vport))
已提交
1719 1720 1721 1722 1723 1724 1725 1726 1727
		goto out;

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			goto out;
		}
		/* PRLI failed */
1728 1729 1730 1731
		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
1732
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1733
		if (lpfc_error_lost_link(irsp))
已提交
1734
			goto out;
1735
		else
J
James Smart 已提交
1736
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1737
						NLP_EVT_CMPL_PRLI);
1738
	} else
已提交
1739
		/* Good status, call state machine */
J
James Smart 已提交
1740
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1741
					NLP_EVT_CMPL_PRLI);
已提交
1742 1743 1744 1745 1746
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1747
/**
1748
 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767
 * @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
1768
int
J
James Smart 已提交
1769
lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1770 1771
		    uint8_t retry)
{
J
James Smart 已提交
1772 1773
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba *phba = vport->phba;
已提交
1774 1775 1776 1777 1778 1779
	PRLI *npr;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

1780
	cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
J
James Smart 已提交
1781 1782
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_PRLI);
1783
	if (!elsiocb)
1784
		return 1;
已提交
1785 1786 1787 1788 1789

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

	/* For PRLI request, remainder of payload is service parameters */
1790
	memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
已提交
1791
	*((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
1792
	pcmd += sizeof(uint32_t);
已提交
1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811

	/* 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
1812 1813 1814 1815
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PRLI:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
1816 1817
	phba->fc_stat.elsXmitPRLI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
J
James Smart 已提交
1818
	spin_lock_irq(shost->host_lock);
已提交
1819
	ndlp->nlp_flag |= NLP_PRLI_SND;
J
James Smart 已提交
1820
	spin_unlock_irq(shost->host_lock);
1821 1822
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
J
James Smart 已提交
1823
		spin_lock_irq(shost->host_lock);
已提交
1824
		ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1825
		spin_unlock_irq(shost->host_lock);
已提交
1826
		lpfc_els_free_iocb(phba, elsiocb);
1827
		return 1;
已提交
1828
	}
J
James Smart 已提交
1829
	vport->fc_prli_sent++;
1830
	return 0;
已提交
1831 1832
}

1833
/**
1834
 * lpfc_rscn_disc - Perform rscn discovery for a vport
1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859
 * @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);
}

/**
1860
 * lpfc_adisc_done - Complete the adisc phase of discovery
1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879
 * @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) &&
1880 1881
	    !(vport->fc_flag & FC_RSCN_MODE) &&
	    (phba->sli_rev < LPFC_SLI_REV4)) {
1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910
		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);
}

1911
/**
1912
 * lpfc_more_adisc - Issue more adisc as needed
1913 1914 1915 1916 1917 1918 1919
 * @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.
 **/
1920
void
J
James Smart 已提交
1921
lpfc_more_adisc(struct lpfc_vport *vport)
已提交
1922 1923 1924
{
	int sentadisc;

J
James Smart 已提交
1925 1926
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1927
	/* Continue discovery with <num_disc_nodes> ADISCs to go */
1928 1929 1930 1931 1932
	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
1933
	/* Check to see if there are more ADISCs to be sent */
J
James Smart 已提交
1934 1935 1936 1937
	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
1938
	}
1939 1940
	if (!vport->num_disc_nodes)
		lpfc_adisc_done(vport);
已提交
1941 1942 1943
	return;
}

1944
/**
1945
 * lpfc_cmpl_els_adisc - Completion callback function for adisc
1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959
 * @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
1960
static void
J
James Smart 已提交
1961 1962
lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1963
{
J
James Smart 已提交
1964 1965
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1966 1967
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
1968
	int  disc;
已提交
1969 1970 1971 1972 1973 1974 1975

	/* 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
1976 1977 1978 1979 1980
	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
1981 1982 1983
	/* 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
1984
	spin_lock_irq(shost->host_lock);
已提交
1985
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1986
	ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
J
James Smart 已提交
1987
	spin_unlock_irq(shost->host_lock);
已提交
1988
	/* ADISC completes to NPort <nlp_DID> */
1989 1990 1991 1992 1993
	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
1994
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1995 1996
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1997
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1998
		spin_unlock_irq(shost->host_lock);
已提交
1999 2000 2001 2002 2003 2004 2005 2006
		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
2007
				spin_lock_irq(shost->host_lock);
已提交
2008
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
2009 2010
				spin_unlock_irq(shost->host_lock);
				lpfc_set_disctmo(vport);
已提交
2011 2012 2013 2014
			}
			goto out;
		}
		/* ADISC failed */
2015 2016 2017 2018
		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
2019
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
2020
		if (!lpfc_error_lost_link(irsp))
J
James Smart 已提交
2021
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
J
James Smart 已提交
2022
						NLP_EVT_CMPL_ADISC);
2023
	} else
已提交
2024
		/* Good status, call state machine */
J
James Smart 已提交
2025
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
已提交
2026 2027
					NLP_EVT_CMPL_ADISC);

2028 2029
	/* Check to see if there are more ADISCs to be sent */
	if (disc && vport->num_disc_nodes)
J
James Smart 已提交
2030
		lpfc_more_adisc(vport);
已提交
2031 2032 2033 2034 2035
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2036
/**
2037
 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055
 * @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
2056
int
J
James Smart 已提交
2057
lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
2058 2059
		     uint8_t retry)
{
J
James Smart 已提交
2060 2061
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
2062 2063 2064 2065 2066 2067
	ADISC *ap;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

2068
	cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
J
James Smart 已提交
2069 2070
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ADISC);
2071
	if (!elsiocb)
2072
		return 1;
已提交
2073 2074 2075 2076 2077 2078

	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;
2079
	pcmd += sizeof(uint32_t);
已提交
2080 2081 2082 2083

	/* Fill in ADISC payload */
	ap = (ADISC *) pcmd;
	ap->hardAL_PA = phba->fc_pref_ALPA;
2084 2085
	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
2086
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
2087

J
James Smart 已提交
2088 2089 2090 2091
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue ADISC:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2092 2093
	phba->fc_stat.elsXmitADISC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
J
James Smart 已提交
2094
	spin_lock_irq(shost->host_lock);
已提交
2095
	ndlp->nlp_flag |= NLP_ADISC_SND;
J
James Smart 已提交
2096
	spin_unlock_irq(shost->host_lock);
2097 2098
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
J
James Smart 已提交
2099
		spin_lock_irq(shost->host_lock);
已提交
2100
		ndlp->nlp_flag &= ~NLP_ADISC_SND;
J
James Smart 已提交
2101
		spin_unlock_irq(shost->host_lock);
已提交
2102
		lpfc_els_free_iocb(phba, elsiocb);
2103
		return 1;
已提交
2104
	}
2105
	return 0;
已提交
2106 2107
}

2108
/**
2109
 * lpfc_cmpl_els_logo - Completion callback function for logo
2110 2111 2112 2113 2114 2115 2116 2117 2118 2119
 * @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
2120
static void
J
James Smart 已提交
2121 2122
lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
2123
{
J
James Smart 已提交
2124 2125 2126
	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
2127 2128 2129 2130 2131 2132 2133 2134
	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
2135
	spin_lock_irq(shost->host_lock);
已提交
2136
	ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
2137
	spin_unlock_irq(shost->host_lock);
已提交
2138

J
James Smart 已提交
2139 2140 2141 2142
	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
2143
	/* LOGO completes to NPort <nlp_DID> */
2144 2145 2146 2147 2148
	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
2149
	/* Check to see if link went down during discovery */
J
James Smart 已提交
2150
	if (lpfc_els_chk_latt(vport))
已提交
2151 2152
		goto out;

2153 2154 2155 2156 2157 2158 2159 2160 2161
	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
2162 2163
	if (irsp->ulpStatus) {
		/* Check for retry */
J
James Smart 已提交
2164
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
2165 2166 2167
			/* ELS command is being retried */
			goto out;
		/* LOGO failed */
2168 2169 2170 2171
		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
2172
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
J
James Smart 已提交
2173
		if (lpfc_error_lost_link(irsp))
已提交
2174
			goto out;
J
James Smart 已提交
2175
		else
J
James Smart 已提交
2176
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2177
						NLP_EVT_CMPL_LOGO);
2178
	} else
2179 2180 2181
		/* Good status, call state machine.
		 * This will unregister the rpi if needed.
		 */
J
James Smart 已提交
2182
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2183
					NLP_EVT_CMPL_LOGO);
已提交
2184 2185 2186 2187 2188
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2189
/**
2190
 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208
 * @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
2209
int
J
James Smart 已提交
2210
lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
2211 2212
		    uint8_t retry)
{
J
James Smart 已提交
2213 2214
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
2215 2216 2217 2218
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;
2219
	int rc;
已提交
2220

2221 2222 2223 2224 2225 2226 2227
	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);

2228
	cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
J
James Smart 已提交
2229 2230
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LOGO);
2231
	if (!elsiocb)
2232
		return 1;
已提交
2233 2234 2235 2236

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2237
	pcmd += sizeof(uint32_t);
已提交
2238 2239

	/* Fill in LOGO payload */
J
James Smart 已提交
2240
	*((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2241 2242
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
已提交
2243

J
James Smart 已提交
2244 2245 2246 2247
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue LOGO:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2248 2249
	phba->fc_stat.elsXmitLOGO++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
J
James Smart 已提交
2250
	spin_lock_irq(shost->host_lock);
已提交
2251
	ndlp->nlp_flag |= NLP_LOGO_SND;
J
James Smart 已提交
2252
	spin_unlock_irq(shost->host_lock);
2253
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2254 2255

	if (rc == IOCB_ERROR) {
J
James Smart 已提交
2256
		spin_lock_irq(shost->host_lock);
已提交
2257
		ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
2258
		spin_unlock_irq(shost->host_lock);
已提交
2259
		lpfc_els_free_iocb(phba, elsiocb);
2260
		return 1;
已提交
2261
	}
2262
	return 0;
已提交
2263 2264
}

2265
/**
2266
 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280
 * @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
2281
static void
J
James Smart 已提交
2282 2283
lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_iocbq *rspiocb)
已提交
2284
{
J
James Smart 已提交
2285
	struct lpfc_vport *vport = cmdiocb->vport;
已提交
2286 2287 2288 2289
	IOCB_t *irsp;

	irsp = &rspiocb->iocb;

J
James Smart 已提交
2290 2291 2292 2293
	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
2294
	/* ELS cmd tag <ulpIoTag> completes */
2295 2296 2297 2298
	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
2299
	/* Check to see if link went down during discovery */
J
James Smart 已提交
2300
	lpfc_els_chk_latt(vport);
已提交
2301 2302 2303 2304
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2305
/**
2306
 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326
 * @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
2327
int
J
James Smart 已提交
2328
lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2329
{
J
James Smart 已提交
2330
	struct lpfc_hba  *phba = vport->phba;
已提交
2331 2332 2333 2334 2335 2336 2337 2338
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
2339
	cmdsize = (sizeof(uint32_t) + sizeof(SCR));
已提交
2340

2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352
	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
2353 2354 2355

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_SCR);
已提交
2356

2357
	if (!elsiocb) {
2358 2359 2360
		/* This will trigger the release of the node just
		 * allocated
		 */
2361
		lpfc_nlp_put(ndlp);
2362
		return 1;
已提交
2363 2364 2365 2366 2367 2368
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2369
	pcmd += sizeof(uint32_t);
已提交
2370 2371

	/* For SCR, remainder of payload is SCR parameter page */
2372
	memset(pcmd, 0, sizeof(SCR));
已提交
2373 2374
	((SCR *) pcmd)->Function = SCR_FUNC_FULL;

J
James Smart 已提交
2375 2376 2377 2378
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue SCR:       did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2379 2380
	phba->fc_stat.elsXmitSCR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2381 2382
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
2383 2384 2385 2386
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the rlease of
		 * the node.
		 */
2387
		lpfc_nlp_put(ndlp);
已提交
2388
		lpfc_els_free_iocb(phba, elsiocb);
2389
		return 1;
已提交
2390
	}
2391 2392 2393
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of node.
	 */
2394
	lpfc_nlp_put(ndlp);
2395
	return 0;
已提交
2396 2397
}

2398
/**
2399
 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419
 * @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
2420
static int
J
James Smart 已提交
2421
lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2422
{
J
James Smart 已提交
2423
	struct lpfc_hba  *phba = vport->phba;
已提交
2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434
	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;
2435
	cmdsize = (sizeof(uint32_t) + sizeof(FARP));
已提交
2436

2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448
	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
2449 2450 2451

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_RNID);
2452
	if (!elsiocb) {
2453 2454 2455
		/* This will trigger the release of the node just
		 * allocated
		 */
2456
		lpfc_nlp_put(ndlp);
2457
		return 1;
已提交
2458 2459 2460 2461 2462 2463
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2464
	pcmd += sizeof(uint32_t);
已提交
2465 2466 2467

	/* Fill in FARPR payload */
	fp = (FARP *) (pcmd);
2468
	memset(fp, 0, sizeof(FARP));
已提交
2469 2470
	lp = (uint32_t *) pcmd;
	*lp++ = be32_to_cpu(nportid);
J
James Smart 已提交
2471
	*lp++ = be32_to_cpu(vport->fc_myDID);
已提交
2472 2473 2474
	fp->Rflags = 0;
	fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);

2475 2476
	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
2477
	ondlp = lpfc_findnode_did(vport, nportid);
2478
	if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
已提交
2479
		memcpy(&fp->OportName, &ondlp->nlp_portname,
2480
		       sizeof(struct lpfc_name));
已提交
2481
		memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2482
		       sizeof(struct lpfc_name));
已提交
2483 2484
	}

J
James Smart 已提交
2485 2486 2487 2488
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FARPR:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2489 2490
	phba->fc_stat.elsXmitFARPR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2491 2492
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
2493 2494 2495 2496
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the release of
		 * the node.
		 */
2497
		lpfc_nlp_put(ndlp);
已提交
2498
		lpfc_els_free_iocb(phba, elsiocb);
2499
		return 1;
已提交
2500
	}
2501 2502 2503
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of the node.
	 */
2504
	lpfc_nlp_put(ndlp);
2505
	return 0;
已提交
2506 2507
}

2508
/**
2509
 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2510 2511 2512 2513 2514 2515 2516 2517 2518 2519
 * @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.
 **/
2520
void
J
James Smart 已提交
2521
lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2522
{
J
James Smart 已提交
2523
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2524
	struct lpfc_work_evt *evtp;
J
James Smart 已提交
2525

2526 2527
	if (!(nlp->nlp_flag & NLP_DELAY_TMO))
		return;
J
James Smart 已提交
2528
	spin_lock_irq(shost->host_lock);
2529
	nlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2530
	spin_unlock_irq(shost->host_lock);
2531 2532
	del_timer_sync(&nlp->nlp_delayfunc);
	nlp->nlp_last_elscmd = 0;
2533
	if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2534
		list_del_init(&nlp->els_retry_evt.evt_listp);
2535 2536 2537 2538
		/* Decrement nlp reference count held for the delayed retry */
		evtp = &nlp->els_retry_evt;
		lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
	}
2539
	if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
J
James Smart 已提交
2540
		spin_lock_irq(shost->host_lock);
2541
		nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
2542 2543
		spin_unlock_irq(shost->host_lock);
		if (vport->num_disc_nodes) {
2544 2545 2546 2547 2548 2549
			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);
2550 2551 2552 2553 2554 2555 2556
				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);
				}
2557 2558 2559 2560 2561 2562
			}
		}
	}
	return;
}

2563
/**
2564
 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576
 * @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
2577 2578 2579
void
lpfc_els_retry_delay(unsigned long ptr)
{
J
James Smart 已提交
2580 2581 2582
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
	struct lpfc_vport *vport = ndlp->vport;
	struct lpfc_hba   *phba = vport->phba;
2583
	unsigned long flags;
J
James Smart 已提交
2584
	struct lpfc_work_evt  *evtp = &ndlp->els_retry_evt;
已提交
2585

2586
	spin_lock_irqsave(&phba->hbalock, flags);
已提交
2587
	if (!list_empty(&evtp->evt_listp)) {
2588
		spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2589 2590 2591
		return;
	}

2592 2593 2594 2595
	/* We need to hold the node by incrementing the reference
	 * count until the queued work is done
	 */
	evtp->evt_arg1  = lpfc_nlp_get(ndlp);
2596 2597 2598
	if (evtp->evt_arg1) {
		evtp->evt = LPFC_EVT_ELS_RETRY;
		list_add_tail(&evtp->evt_listp, &phba->work_list);
2599
		lpfc_worker_wake_up(phba);
2600
	}
2601
	spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2602 2603 2604
	return;
}

2605
/**
2606
 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2607 2608 2609 2610 2611 2612 2613
 * @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
2614 2615 2616
void
lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
2617 2618 2619
	struct lpfc_vport *vport = ndlp->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	uint32_t cmd, did, retry;
已提交
2620

J
James Smart 已提交
2621
	spin_lock_irq(shost->host_lock);
2622 2623 2624
	did = ndlp->nlp_DID;
	cmd = ndlp->nlp_last_elscmd;
	ndlp->nlp_last_elscmd = 0;
已提交
2625 2626

	if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
J
James Smart 已提交
2627
		spin_unlock_irq(shost->host_lock);
已提交
2628 2629 2630 2631
		return;
	}

	ndlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2632
	spin_unlock_irq(shost->host_lock);
2633 2634 2635 2636 2637 2638
	/*
	 * 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
2639
	retry = ndlp->nlp_retry;
2640
	ndlp->nlp_retry = 0;
已提交
2641 2642 2643

	switch (cmd) {
	case ELS_CMD_FLOGI:
J
James Smart 已提交
2644
		lpfc_issue_els_flogi(vport, ndlp, retry);
已提交
2645 2646
		break;
	case ELS_CMD_PLOGI:
J
James Smart 已提交
2647
		if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2648
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2649
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2650
		}
已提交
2651 2652
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
2653
		if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2654
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2655
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2656
		}
已提交
2657 2658
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
2659
		if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2660
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2661
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2662
		}
已提交
2663 2664
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
2665
		if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2666
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2667
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2668
		}
已提交
2669
		break;
2670 2671 2672
	case ELS_CMD_FDISC:
		lpfc_issue_els_fdisc(vport, ndlp, retry);
		break;
已提交
2673 2674 2675 2676
	}
	return;
}

2677
/**
2678
 * lpfc_els_retry - Make retry decision on an els command iocb
2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697
 * @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
2698
static int
J
James Smart 已提交
2699 2700
lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
	       struct lpfc_iocbq *rspiocb)
已提交
2701
{
J
James Smart 已提交
2702 2703 2704 2705 2706
	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
2707 2708
	uint32_t *elscmd;
	struct ls_rjt stat;
J
James Smart 已提交
2709
	int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2710
	int logerr = 0;
J
James Smart 已提交
2711
	uint32_t cmd = 0;
2712
	uint32_t did;
已提交
2713

2714

已提交
2715 2716 2717 2718 2719 2720 2721 2722 2723
	/* Note: context2 may be 0 for internal driver abort
	 * of delays ELS command.
	 */

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

2724
	if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2725 2726 2727 2728
		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
2729
		ndlp = lpfc_findnode_did(vport, did);
2730 2731
		if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
		    && (cmd != ELS_CMD_PLOGI))
2732 2733 2734
			return 1;
	}

J
James Smart 已提交
2735 2736 2737 2738
	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
2739 2740 2741 2742 2743 2744 2745 2746
	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:
2747 2748 2749 2750 2751 2752 2753 2754 2755
			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
2756
			if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
2757
				delay = 1000;
已提交
2758 2759 2760
			retry = 1;
			break;

2761
		case IOERR_ILLEGAL_COMMAND:
2762 2763 2764 2765 2766 2767 2768 2769 2770
			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;
2771 2772
			break;

已提交
2773
		case IOERR_NO_RESOURCES:
2774
			logerr = 1; /* HBA out of resources */
J
James Smart 已提交
2775 2776 2777 2778 2779 2780 2781
			retry = 1;
			if (cmdiocb->retry > 100)
				delay = 100;
			maxretry = 250;
			break;

		case IOERR_ILLEGAL_FRAME:
2782
			delay = 100;
已提交
2783 2784 2785
			retry = 1;
			break;

J
James Smart 已提交
2786
		case IOERR_SEQUENCE_TIMEOUT:
已提交
2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802
		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:
2803
		logerr = 1; /* Fabric / Remote NPort out of resources */
已提交
2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816
		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) {
2817
					delay = 1000;
已提交
2818 2819 2820 2821 2822
					maxretry = 48;
				}
				retry = 1;
				break;
			}
2823 2824 2825 2826 2827 2828 2829 2830 2831
			if (stat.un.b.lsRjtRsnCodeExp ==
			    LSEXP_CANT_GIVE_DATA) {
				if (cmd == ELS_CMD_PLOGI) {
					delay = 1000;
					maxretry = 48;
				}
				retry = 1;
				break;
			}
已提交
2832
			if (cmd == ELS_CMD_PLOGI) {
2833
				delay = 1000;
已提交
2834 2835 2836 2837
				maxretry = lpfc_max_els_tries + 1;
				retry = 1;
				break;
			}
2838 2839 2840
			if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
			  (cmd == ELS_CMD_FDISC) &&
			  (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
2841 2842 2843 2844
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
						 "0125 FDISC Failed (x%x). "
						 "Fabric out of resources\n",
						 stat.un.lsRjtError);
2845 2846 2847
				lpfc_vport_set_state(vport,
						     FC_VPORT_NO_FABRIC_RSCS);
			}
已提交
2848 2849 2850
			break;

		case LSRJT_LOGICAL_BSY:
J
James Smart 已提交
2851 2852
			if ((cmd == ELS_CMD_PLOGI) ||
			    (cmd == ELS_CMD_PRLI)) {
2853
				delay = 1000;
已提交
2854
				maxretry = 48;
2855
			} else if (cmd == ELS_CMD_FDISC) {
2856 2857 2858 2859
				/* FDISC retry policy */
				maxretry = 48;
				if (cmdiocb->retry >= 32)
					delay = 1000;
已提交
2860 2861 2862
			}
			retry = 1;
			break;
2863 2864

		case LSRJT_LOGICAL_ERR:
2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875
			/* 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;
			}
2876 2877 2878 2879 2880 2881
		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))
			  ) {
2882
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2883
						 "0122 FDISC Failed (x%x). "
2884 2885
						 "Fabric Detected Bad WWN\n",
						 stat.un.lsRjtError);
2886 2887 2888 2889
				lpfc_vport_set_state(vport,
						     FC_VPORT_FABRIC_REJ_WWN);
			}
			break;
已提交
2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900
		}
		break;

	case IOSTAT_INTERMED_RSP:
	case IOSTAT_BA_RJT:
		break;

	default:
		break;
	}

2901
	if (did == FDMI_DID)
已提交
2902 2903
		retry = 1;

2904
	if (((cmd == ELS_CMD_FLOGI) || (cmd == ELS_CMD_FDISC)) &&
2905 2906
	    (phba->fc_topology != TOPOLOGY_LOOP) &&
	    !lpfc_error_lost_link(irsp)) {
2907 2908
		/* FLOGI retry policy */
		retry = 1;
2909 2910 2911 2912 2913
		/* retry forever */
		maxretry = 0;
		if (cmdiocb->retry >= 100)
			delay = 5000;
		else if (cmdiocb->retry >= 32)
2914 2915 2916
			delay = 1000;
	}

2917 2918
	cmdiocb->retry++;
	if (maxretry && (cmdiocb->retry >= maxretry)) {
已提交
2919 2920 2921 2922
		phba->fc_stat.elsRetryExceeded++;
		retry = 0;
	}

2923 2924 2925
	if ((vport->load_flag & FC_UNLOADING) != 0)
		retry = 0;

已提交
2926
	if (retry) {
2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937
		if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_FDISC)) {
			/* Stop retrying PLOGI and FDISC if in FCF discovery */
			if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
				lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
						 "2849 Stop retry ELS command "
						 "x%x to remote NPORT x%x, "
						 "Data: x%x x%x\n", cmd, did,
						 cmdiocb->retry, delay);
				return 0;
			}
		}
已提交
2938 2939

		/* Retry ELS command <elsCmd> to remote NPORT <did> */
2940 2941 2942 2943
		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
2944

J
James Smart 已提交
2945 2946 2947 2948 2949
		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
2950
			/* If discovery / RSCN timer is running, reset it */
J
James Smart 已提交
2951
			if (timer_pending(&vport->fc_disctmo) ||
2952
			    (vport->fc_flag & FC_RSCN_MODE))
J
James Smart 已提交
2953
				lpfc_set_disctmo(vport);
已提交
2954 2955 2956
		}

		phba->fc_stat.elsXmitRetry++;
2957
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
已提交
2958 2959 2960
			phba->fc_stat.elsDelayRetry++;
			ndlp->nlp_retry = cmdiocb->retry;

2961 2962 2963
			/* delay is specified in milliseconds */
			mod_timer(&ndlp->nlp_delayfunc,
				jiffies + msecs_to_jiffies(delay));
J
James Smart 已提交
2964
			spin_lock_irq(shost->host_lock);
已提交
2965
			ndlp->nlp_flag |= NLP_DELAY_TMO;
J
James Smart 已提交
2966
			spin_unlock_irq(shost->host_lock);
已提交
2967

2968
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2969 2970 2971 2972 2973 2974
			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
2975 2976
			ndlp->nlp_last_elscmd = cmd;

2977
			return 1;
已提交
2978 2979 2980
		}
		switch (cmd) {
		case ELS_CMD_FLOGI:
J
James Smart 已提交
2981
			lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
2982
			return 1;
2983 2984 2985
		case ELS_CMD_FDISC:
			lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
			return 1;
已提交
2986
		case ELS_CMD_PLOGI:
2987
			if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2988
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2989
				lpfc_nlp_set_state(vport, ndlp,
2990
						   NLP_STE_PLOGI_ISSUE);
2991
			}
J
James Smart 已提交
2992
			lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
2993
			return 1;
已提交
2994
		case ELS_CMD_ADISC:
2995
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2996 2997
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
2998
			return 1;
已提交
2999
		case ELS_CMD_PRLI:
3000
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
3001 3002
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
			lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
3003
			return 1;
已提交
3004
		case ELS_CMD_LOGO:
3005
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
3006 3007
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
			lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
3008
			return 1;
已提交
3009 3010 3011
		}
	}
	/* No retry ELS command <elsCmd> to remote NPORT <did> */
3012 3013 3014 3015 3016 3017 3018 3019 3020
	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,
3021 3022 3023 3024
			 "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]);
3025
	}
3026
	return 0;
已提交
3027 3028
}

3029
/**
3030
 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042
 * @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)
 **/
3043
static int
3044 3045 3046 3047
lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
{
	struct lpfc_dmabuf *buf_ptr;

3048
	/* Free the response before processing the command. */
3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060
	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;
}

3061
/**
3062
 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
3063 3064 3065 3066 3067 3068 3069 3070 3071 3072
 * @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)
 **/
3073
static int
3074 3075 3076 3077 3078 3079 3080
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;
}

3081
/**
3082
 * lpfc_els_free_iocb - Free a command iocb and its associated resources
3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107
 * @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
3108
int
3109
lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
已提交
3110 3111
{
	struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
3112 3113 3114 3115 3116 3117
	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
3118

3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130
			/* 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);
3131 3132
		elsiocb->context1 = NULL;
	}
已提交
3133 3134
	/* context2  = cmd,  context2->next = rsp, context3 = bpl */
	if (elsiocb->context2) {
3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163
		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
3164 3165 3166 3167
	}

	if (elsiocb->context3) {
		buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
3168
		lpfc_els_free_bpl(phba, buf_ptr);
已提交
3169
	}
3170
	lpfc_sli_release_iocbq(phba, elsiocb);
已提交
3171 3172 3173
	return 0;
}

3174
/**
3175
 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190
 * @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
3191
static void
J
James Smart 已提交
3192 3193
lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		       struct lpfc_iocbq *rspiocb)
已提交
3194
{
J
James Smart 已提交
3195 3196
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_vport *vport = cmdiocb->vport;
J
James Smart 已提交
3197 3198 3199 3200 3201 3202
	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
3203
	/* ACC to LOGO completes to NPort <nlp_DID> */
3204 3205 3206 3207 3208
	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);
3209 3210 3211 3212 3213 3214 3215 3216

	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);
3217 3218 3219 3220 3221
		} else {
			/* Indicate the node has already released, should
			 * not reference to it from within lpfc_els_free_iocb.
			 */
			cmdiocb->context1 = NULL;
3222
		}
已提交
3223 3224 3225 3226 3227
	}
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

3228
/**
3229
 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240
 * @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
3241 3242 3243 3244 3245 3246
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;

3247 3248 3249 3250 3251 3252 3253 3254
	/*
	 * 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
3255
	pmb->context1 = NULL;
3256 3257
	pmb->context2 = NULL;

J
James Smart 已提交
3258 3259 3260
	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	kfree(mp);
	mempool_free(pmb, phba->mbox_mem_pool);
3261
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3262 3263 3264 3265 3266 3267 3268
		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);
	}
3269

J
James Smart 已提交
3270 3271 3272
	return;
}

3273
/**
3274
 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288
 * @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
3289
static void
J
James Smart 已提交
3290
lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3291
		  struct lpfc_iocbq *rspiocb)
已提交
3292
{
J
James Smart 已提交
3293 3294 3295
	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;
3296 3297
	IOCB_t  *irsp;
	uint8_t *pcmd;
已提交
3298
	LPFC_MBOXQ_t *mbox = NULL;
J
James Smart 已提交
3299
	struct lpfc_dmabuf *mp = NULL;
3300
	uint32_t ls_rjt = 0;
已提交
3301

J
James Smart 已提交
3302 3303
	irsp = &rspiocb->iocb;

已提交
3304 3305 3306
	if (cmdiocb->context_un.mbox)
		mbox = cmdiocb->context_un.mbox;

3307 3308 3309
	/* First determine if this is a LS_RJT cmpl. Note, this callback
	 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
	 */
3310
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3311 3312
	if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
	    (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3313
		/* A LS_RJT associated with Default RPI cleanup has its own
D
Daniel Mack 已提交
3314
		 * separate code path.
3315 3316 3317 3318 3319
		 */
		if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
			ls_rjt = 1;
	}

已提交
3320
	/* Check to see if link went down during discovery */
3321
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
已提交
3322
		if (mbox) {
3323 3324 3325 3326 3327
			mp = (struct lpfc_dmabuf *) mbox->context1;
			if (mp) {
				lpfc_mbuf_free(phba, mp->virt, mp->phys);
				kfree(mp);
			}
3328
			mempool_free(mbox, phba->mbox_mem_pool);
已提交
3329
		}
3330 3331
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
		    (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3332
			if (lpfc_nlp_not_used(ndlp)) {
3333
				ndlp = NULL;
3334 3335 3336 3337 3338 3339
				/* 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
3340 3341 3342
		goto out;
	}

J
James Smart 已提交
3343
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3344
		"ELS rsp cmpl:    status:x%x/x%x did:x%x",
J
James Smart 已提交
3345
		irsp->ulpStatus, irsp->un.ulpWord[4],
3346
		cmdiocb->iocb.un.elsreq64.remoteID);
已提交
3347
	/* ELS response tag <ulpIoTag> completes */
3348 3349 3350 3351 3352 3353 3354
	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
3355 3356 3357
	if (mbox) {
		if ((rspiocb->iocb.ulpStatus == 0)
		    && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
J
James Smart 已提交
3358
			lpfc_unreg_rpi(vport, ndlp);
3359 3360 3361
			/* Increment reference count to ndlp to hold the
			 * reference to ndlp for the callback function.
			 */
3362
			mbox->context2 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
3363
			mbox->vport = vport;
J
James Smart 已提交
3364 3365 3366 3367 3368 3369 3370 3371
			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
3372
					   NLP_STE_REG_LOGIN_ISSUE);
J
James Smart 已提交
3373
			}
3374
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3375
			    != MBX_NOT_FINISHED)
已提交
3376
				goto out;
3377 3378 3379 3380 3381
			else
				/* Decrement the ndlp reference count we
				 * set for this failed mailbox command.
				 */
				lpfc_nlp_put(ndlp);
3382 3383 3384 3385 3386 3387 3388 3389

			/* 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);

3390
			if (lpfc_nlp_not_used(ndlp)) {
3391
				ndlp = NULL;
3392 3393 3394 3395 3396 3397
				/* 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
3398
		} else {
J
James Smart 已提交
3399 3400 3401
			/* Do not drop node for lpfc_els_abort'ed ELS cmds */
			if (!lpfc_error_lost_link(irsp) &&
			    ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3402
				if (lpfc_nlp_not_used(ndlp)) {
3403
					ndlp = NULL;
3404 3405 3406 3407 3408 3409 3410
					/* 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
3411 3412
			}
		}
3413 3414 3415 3416 3417 3418
		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
3419 3420
	}
out:
3421
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
J
James Smart 已提交
3422
		spin_lock_irq(shost->host_lock);
J
James Smart 已提交
3423
		ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
J
James Smart 已提交
3424
		spin_unlock_irq(shost->host_lock);
3425 3426 3427 3428 3429 3430 3431

		/* 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)
3432 3433 3434 3435 3436 3437
			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
3438
	}
3439

已提交
3440 3441 3442 3443
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

3444
/**
3445
 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468
 * @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
3469
int
J
James Smart 已提交
3470 3471
lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
		 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3472
		 LPFC_MBOXQ_t *mbox)
已提交
3473
{
J
James Smart 已提交
3474 3475
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
3476 3477 3478 3479 3480 3481 3482
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;
3483
	ELS_PKT *els_pkt_ptr;
已提交
3484 3485 3486 3487 3488 3489

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

	switch (flag) {
	case ELS_CMD_ACC:
3490
		cmdsize = sizeof(uint32_t);
J
James Smart 已提交
3491 3492
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3493
		if (!elsiocb) {
J
James Smart 已提交
3494
			spin_lock_irq(shost->host_lock);
3495
			ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3496
			spin_unlock_irq(shost->host_lock);
3497
			return 1;
已提交
3498
		}
J
James Smart 已提交
3499

已提交
3500 3501 3502 3503
		icmd = &elsiocb->iocb;
		icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
		pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
		*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3504
		pcmd += sizeof(uint32_t);
J
James Smart 已提交
3505 3506 3507 3508

		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
3509 3510
		break;
	case ELS_CMD_PLOGI:
3511
		cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
J
James Smart 已提交
3512 3513
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3514
		if (!elsiocb)
3515
			return 1;
3516

已提交
3517 3518 3519 3520 3521 3522 3523 3524
		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;
3525 3526
		pcmd += sizeof(uint32_t);
		memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
J
James Smart 已提交
3527 3528 3529 3530

		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
3531
		break;
3532
	case ELS_CMD_PRLO:
3533
		cmdsize = sizeof(uint32_t) + sizeof(PRLO);
J
James Smart 已提交
3534
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3535 3536 3537 3538 3539 3540 3541 3542 3543
					     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,
3544
		       sizeof(uint32_t) + sizeof(PRLO));
3545 3546 3547
		*((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
3548 3549 3550 3551

		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);
3552
		break;
已提交
3553
	default:
3554
		return 1;
已提交
3555 3556
	}
	/* Xmit ELS ACC response tag <ulpIoTag> */
3557 3558 3559 3560 3561 3562
	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
3563
	if (ndlp->nlp_flag & NLP_LOGO_ACC) {
J
James Smart 已提交
3564
		spin_lock_irq(shost->host_lock);
3565
		ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3566
		spin_unlock_irq(shost->host_lock);
已提交
3567 3568
		elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
	} else {
J
James Smart 已提交
3569
		elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3570 3571 3572
	}

	phba->fc_stat.elsXmitACC++;
3573
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3574 3575
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3576
		return 1;
已提交
3577
	}
3578
	return 0;
已提交
3579 3580
}

3581
/**
3582
 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602
 * @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
3603
int
J
James Smart 已提交
3604
lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
J
James Smart 已提交
3605 3606
		    struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
		    LPFC_MBOXQ_t *mbox)
已提交
3607
{
J
James Smart 已提交
3608
	struct lpfc_hba  *phba = vport->phba;
已提交
3609 3610 3611 3612 3613 3614 3615 3616 3617
	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;
3618
	cmdsize = 2 * sizeof(uint32_t);
J
James Smart 已提交
3619 3620
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LS_RJT);
3621
	if (!elsiocb)
3622
		return 1;
已提交
3623 3624 3625 3626 3627 3628 3629

	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;
3630
	pcmd += sizeof(uint32_t);
已提交
3631 3632
	*((uint32_t *) (pcmd)) = rejectError;

3633
	if (mbox)
J
James Smart 已提交
3634 3635
		elsiocb->context_un.mbox = mbox;

已提交
3636
	/* Xmit ELS RJT <err> response tag <ulpIoTag> */
3637 3638 3639 3640 3641 3642 3643
	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
3644 3645 3646 3647
	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
3648
	phba->fc_stat.elsXmitLSRJT++;
J
James Smart 已提交
3649
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3650
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3651

已提交
3652 3653
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3654
		return 1;
已提交
3655
	}
3656
	return 0;
已提交
3657 3658
}

3659
/**
3660
 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677
 * @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
3678
int
J
James Smart 已提交
3679 3680
lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
		       struct lpfc_nodelist *ndlp)
已提交
3681
{
J
James Smart 已提交
3682
	struct lpfc_hba  *phba = vport->phba;
已提交
3683
	ADISC *ap;
J
James Smart 已提交
3684
	IOCB_t *icmd, *oldcmd;
已提交
3685 3686 3687 3688 3689
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

3690
	cmdsize = sizeof(uint32_t) + sizeof(ADISC);
J
James Smart 已提交
3691 3692
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3693
	if (!elsiocb)
3694
		return 1;
已提交
3695

3696 3697 3698 3699
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

已提交
3700
	/* Xmit ADISC ACC response tag <ulpIoTag> */
3701 3702 3703 3704 3705 3706
	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
3707 3708 3709
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3710
	pcmd += sizeof(uint32_t);
已提交
3711 3712 3713

	ap = (ADISC *) (pcmd);
	ap->hardAL_PA = phba->fc_pref_ALPA;
3714 3715
	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
3716
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
3717

J
James Smart 已提交
3718 3719 3720 3721
	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
3722
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3723
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3724
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3725 3726
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3727
		return 1;
已提交
3728
	}
3729
	return 0;
已提交
3730 3731
}

3732
/**
3733
 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750
 * @vport: pointer to a virtual N_Port data structure.
 * @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
3751
int
J
James Smart 已提交
3752
lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3753
		      struct lpfc_nodelist *ndlp)
已提交
3754
{
J
James Smart 已提交
3755
	struct lpfc_hba  *phba = vport->phba;
已提交
3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767
	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;

3768
	cmdsize = sizeof(uint32_t) + sizeof(PRLI);
J
James Smart 已提交
3769
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3770
		ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
3771 3772
	if (!elsiocb)
		return 1;
已提交
3773

3774 3775 3776
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3777
	/* Xmit PRLI ACC response tag <ulpIoTag> */
3778 3779 3780 3781 3782 3783
	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
3784 3785 3786
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
3787
	pcmd += sizeof(uint32_t);
已提交
3788 3789

	/* For PRLI, remainder of payload is PRLI parameter page */
3790
	memset(pcmd, 0, sizeof(PRLI));
已提交
3791 3792 3793 3794

	npr = (PRLI *) pcmd;
	vpd = &phba->vpd;
	/*
3795 3796
	 * 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
3797
	 */
3798 3799
	if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
	    (vpd->rev.feaLevelHigh >= 0x02)) {
已提交
3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812
		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
3813 3814 3815 3816
	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
3817
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3818
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3819

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

3828
/**
3829
 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853
 * @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
3854
static int
J
James Smart 已提交
3855
lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
3856
		      struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
已提交
3857
{
J
James Smart 已提交
3858
	struct lpfc_hba  *phba = vport->phba;
已提交
3859
	RNID *rn;
J
James Smart 已提交
3860
	IOCB_t *icmd, *oldcmd;
已提交
3861 3862 3863 3864 3865 3866 3867
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
3868 3869
	cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
					+ (2 * sizeof(struct lpfc_name));
已提交
3870
	if (format)
3871
		cmdsize += sizeof(RNID_TOP_DISC);
已提交
3872

J
James Smart 已提交
3873 3874
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3875
	if (!elsiocb)
3876
		return 1;
已提交
3877

3878 3879 3880
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3881
	/* Xmit RNID ACC response tag <ulpIoTag> */
3882 3883 3884
	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
3885 3886
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3887
	pcmd += sizeof(uint32_t);
已提交
3888

3889
	memset(pcmd, 0, sizeof(RNID));
已提交
3890 3891
	rn = (RNID *) (pcmd);
	rn->Format = format;
3892 3893 3894
	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
3895 3896 3897 3898 3899
	switch (format) {
	case 0:
		rn->SpecificLen = 0;
		break;
	case RNID_TOPOLOGY_DISC:
3900
		rn->SpecificLen = sizeof(RNID_TOP_DISC);
已提交
3901
		memcpy(&rn->un.topologyDisc.portName,
3902
		       &vport->fc_portname, sizeof(struct lpfc_name));
已提交
3903 3904 3905 3906 3907 3908 3909 3910 3911 3912
		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
3913 3914 3915 3916
	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
3917
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3918
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3919
	lpfc_nlp_put(ndlp);
已提交
3920 3921 3922
	elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
				    * it could be freed */

3923
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3924 3925
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3926
		return 1;
已提交
3927
	}
3928
	return 0;
已提交
3929 3930
}

3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988
/**
 * lpfc_els_rsp_echo_acc - Issue echo acc response
 * @vport: pointer to a virtual N_Port data structure.
 * @data: pointer to echo data to return in the accept.
 * @oldiocb: pointer to the original lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * Return code
 *   0 - Successfully issued acc echo response
 *   1 - Failed to issue acc echo response
 **/
static int
lpfc_els_rsp_echo_acc(struct lpfc_vport *vport, uint8_t *data,
		      struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
{
	struct lpfc_hba  *phba = vport->phba;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
	cmdsize = oldiocb->iocb.unsli3.rcvsli3.acc_len;

	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
	if (!elsiocb)
		return 1;

	elsiocb->iocb.ulpContext = oldiocb->iocb.ulpContext;	/* Xri */
	/* Xmit ECHO ACC response tag <ulpIoTag> */
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "2876 Xmit ECHO ACC response tag x%x xri x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext);
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, data, cmdsize - sizeof(uint32_t));

	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
		"Issue ACC ECHO:  did:x%x flg:x%x",
		ndlp->nlp_DID, ndlp->nlp_flag, 0);

	phba->fc_stat.elsXmitACC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
	lpfc_nlp_put(ndlp);
	elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
				    * it could be freed */

	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
		return 1;
	}
	return 0;
}

3989
/**
3990
 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007
 * @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
4008
int
J
James Smart 已提交
4009
lpfc_els_disc_adisc(struct lpfc_vport *vport)
已提交
4010
{
J
James Smart 已提交
4011
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
4012
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
4013
	int sentadisc = 0;
已提交
4014

4015
	/* go thru NPR nodes and issue any remaining ELS ADISCs */
J
James Smart 已提交
4016
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
4017 4018
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
4019 4020 4021
		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
4022
			spin_lock_irq(shost->host_lock);
4023
			ndlp->nlp_flag &= ~NLP_NPR_ADISC;
J
James Smart 已提交
4024
			spin_unlock_irq(shost->host_lock);
4025
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
4026 4027
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, 0);
4028
			sentadisc++;
J
James Smart 已提交
4029 4030
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
4031
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
4032 4033 4034
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
4035
				break;
已提交
4036 4037 4038 4039
			}
		}
	}
	if (sentadisc == 0) {
J
James Smart 已提交
4040 4041 4042
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
4043
	}
4044
	return sentadisc;
已提交
4045 4046
}

4047
/**
4048
 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065
 * @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
4066
int
J
James Smart 已提交
4067
lpfc_els_disc_plogi(struct lpfc_vport *vport)
已提交
4068
{
J
James Smart 已提交
4069
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
4070
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
4071
	int sentplogi = 0;
已提交
4072

J
James Smart 已提交
4073 4074
	/* go thru NPR nodes and issue any remaining ELS PLOGIs */
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
4075 4076
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
4077 4078 4079 4080 4081
		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
4082 4083
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
			lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
4084
			sentplogi++;
J
James Smart 已提交
4085 4086
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
4087
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
4088 4089 4090
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
4091
				break;
已提交
4092 4093 4094
			}
		}
	}
4095 4096 4097 4098
	if (sentplogi) {
		lpfc_set_disctmo(vport);
	}
	else {
J
James Smart 已提交
4099 4100 4101
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
4102
	}
4103
	return sentplogi;
已提交
4104 4105
}

4106
/**
4107
 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
4108 4109 4110 4111 4112 4113 4114
 * @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.
 **/
4115
void
J
James Smart 已提交
4116
lpfc_els_flush_rscn(struct lpfc_vport *vport)
已提交
4117
{
J
James Smart 已提交
4118 4119
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4120 4121
	int i;

4122 4123 4124 4125 4126 4127 4128 4129 4130 4131
	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
4132
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4133
		lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
J
James Smart 已提交
4134
		vport->fc_rscn_id_list[i] = NULL;
已提交
4135
	}
J
James Smart 已提交
4136 4137 4138 4139 4140
	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);
4141 4142
	/* Indicate we are done walking this fc_rscn_id_list */
	vport->fc_rscn_flush = 0;
已提交
4143 4144
}

4145
/**
4146
 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
4147 4148 4149 4150 4151 4152 4153 4154 4155 4156
 * @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
4157
int
J
James Smart 已提交
4158
lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
已提交
4159 4160 4161 4162
{
	D_ID ns_did;
	D_ID rscn_did;
	uint32_t *lp;
4163
	uint32_t payload_len, i;
4164
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
4165 4166 4167 4168 4169

	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
4170
		return 0;
已提交
4171 4172

	/* If we are doing a FULL RSCN rediscovery, match everything */
J
James Smart 已提交
4173
	if (vport->fc_flag & FC_RSCN_DISCOVERY)
4174
		return did;
已提交
4175

4176 4177 4178 4179 4180 4181 4182 4183 4184
	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
4185
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4186 4187 4188
		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
4189
		while (payload_len) {
4190 4191
			rscn_did.un.word = be32_to_cpu(*lp++);
			payload_len -= sizeof(uint32_t);
4192 4193
			switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
			case RSCN_ADDRESS_FORMAT_PORT:
4194 4195 4196
				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))
4197
					goto return_did_out;
已提交
4198
				break;
4199
			case RSCN_ADDRESS_FORMAT_AREA:
已提交
4200 4201
				if ((ns_did.un.b.domain == rscn_did.un.b.domain)
				    && (ns_did.un.b.area == rscn_did.un.b.area))
4202
					goto return_did_out;
已提交
4203
				break;
4204
			case RSCN_ADDRESS_FORMAT_DOMAIN:
已提交
4205
				if (ns_did.un.b.domain == rscn_did.un.b.domain)
4206
					goto return_did_out;
已提交
4207
				break;
4208
			case RSCN_ADDRESS_FORMAT_FABRIC:
4209
				goto return_did_out;
已提交
4210 4211
			}
		}
4212
	}
4213 4214
	/* Indicate we are done with walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
4215
	return 0;
4216 4217 4218 4219
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
4220 4221
}

4222
/**
4223
 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
4224 4225 4226 4227 4228 4229 4230 4231 4232
 * @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
4233
static int
J
James Smart 已提交
4234
lpfc_rscn_recovery_check(struct lpfc_vport *vport)
已提交
4235
{
4236
	struct lpfc_nodelist *ndlp = NULL;
已提交
4237

4238
	/* Move all affected nodes by pending RSCNs to NPR state. */
J
James Smart 已提交
4239
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4240
		if (!NLP_CHK_NODE_ACT(ndlp) ||
4241 4242
		    (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
		    !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
4243
			continue;
J
James Smart 已提交
4244
		lpfc_disc_state_machine(vport, ndlp, NULL,
4245 4246
					NLP_EVT_DEVICE_RECOVERY);
		lpfc_cancel_retry_delay_tmo(vport, ndlp);
已提交
4247
	}
4248
	return 0;
已提交
4249 4250
}

4251
/**
4252
 * lpfc_send_rscn_event - Send an RSCN event to management application
4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293
 * @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);
}

4294
/**
4295
 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315
 * @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
4316
static int
J
James Smart 已提交
4317
lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4318
		  struct lpfc_nodelist *ndlp)
已提交
4319
{
J
James Smart 已提交
4320 4321
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4322
	struct lpfc_dmabuf *pcmd;
4323
	uint32_t *lp, *datap;
已提交
4324
	IOCB_t *icmd;
4325
	uint32_t payload_len, length, nportid, *cmd;
4326
	int rscn_cnt;
4327
	int rscn_id = 0, hba_id = 0;
4328
	int i;
已提交
4329 4330 4331 4332 4333

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

4334 4335
	payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
	payload_len -= sizeof(uint32_t);	/* take off word 0 */
已提交
4336
	/* RSCN received */
4337 4338
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4339 4340
			 vport->fc_flag, payload_len, *lp,
			 vport->fc_rscn_id_cnt);
4341 4342 4343 4344

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

4345
	for (i = 0; i < payload_len/sizeof(uint32_t); i++)
J
James Smart 已提交
4346
		fc_host_post_event(shost, fc_get_event_number(),
4347 4348
			FCH_EVT_RSCN, lp[i]);

已提交
4349 4350 4351
	/* If we are about to begin discovery, just ACC the RSCN.
	 * Discovery processing will satisfy it.
	 */
J
James Smart 已提交
4352
	if (vport->port_state <= LPFC_NS_QRY) {
J
James Smart 已提交
4353 4354 4355 4356
		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);

4357
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4358
		return 0;
已提交
4359 4360
	}

4361 4362 4363 4364
	/* 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) &&
4365
		!(vport->cfg_peer_port_login)) {
4366 4367 4368 4369 4370 4371 4372
		i = payload_len;
		datap = lp;
		while (i > 0) {
			nportid = *datap++;
			nportid = ((be32_to_cpu(nportid)) & Mask_DID);
			i -= sizeof(uint32_t);
			rscn_id++;
4373 4374
			if (lpfc_find_vport_by_did(phba, nportid))
				hba_id++;
4375 4376 4377
		}
		if (rscn_id == hba_id) {
			/* ALL NPortIDs in RSCN are on HBA */
4378
			lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4379
					 "0219 Ignore RSCN "
4380 4381
					 "Data: x%x x%x x%x x%x\n",
					 vport->fc_flag, payload_len,
4382
					 *lp, vport->fc_rscn_id_cnt);
J
James Smart 已提交
4383 4384 4385 4386 4387
			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);

4388
			lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4389
				ndlp, NULL);
4390 4391 4392 4393
			return 0;
		}
	}

4394 4395 4396 4397
	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;
4398
		spin_unlock_irq(shost->host_lock);
4399 4400
		/* Send back ACC */
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4401 4402 4403 4404 4405
		return 0;
	}
	/* Indicate we are walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 1;
	spin_unlock_irq(shost->host_lock);
4406
	/* Get the array count after successfully have the token */
4407
	rscn_cnt = vport->fc_rscn_id_cnt;
已提交
4408 4409 4410
	/* If we are already processing an RSCN, save the received
	 * RSCN payload buffer, cmdiocb->context2 to process later.
	 */
J
James Smart 已提交
4411
	if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
J
James Smart 已提交
4412 4413 4414 4415
		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);

4416
		spin_lock_irq(shost->host_lock);
4417 4418
		vport->fc_flag |= FC_RSCN_DEFERRED;
		if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
J
James Smart 已提交
4419 4420 4421
		    !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
			vport->fc_flag |= FC_RSCN_MODE;
			spin_unlock_irq(shost->host_lock);
4422 4423 4424 4425 4426 4427 4428
			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;
4429
				*cmd |= cpu_to_be32(payload_len + length);
4430 4431 4432 4433 4434 4435 4436 4437 4438 4439
				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
4440
			/* Deferred RSCN */
4441 4442 4443 4444 4445
			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
4446
		} else {
J
James Smart 已提交
4447 4448
			vport->fc_flag |= FC_RSCN_DISCOVERY;
			spin_unlock_irq(shost->host_lock);
已提交
4449
			/* ReDiscovery RSCN */
4450 4451 4452 4453 4454
			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
4455
		}
4456 4457
		/* Indicate we are done walking fc_rscn_id_list on this vport */
		vport->fc_rscn_flush = 0;
已提交
4458
		/* Send back ACC */
4459
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4460
		/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4461
		lpfc_rscn_recovery_check(vport);
4462
		spin_lock_irq(shost->host_lock);
4463
		vport->fc_flag &= ~FC_RSCN_DEFERRED;
4464
		spin_unlock_irq(shost->host_lock);
4465
		return 0;
已提交
4466
	}
J
James Smart 已提交
4467 4468 4469 4470
	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
4471 4472 4473 4474
	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;
4475 4476
	/* Indicate we are done walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
已提交
4477 4478 4479 4480 4481
	/*
	 * If we zero, cmdiocb->context2, the calling routine will
	 * not try to free it.
	 */
	cmdiocb->context2 = NULL;
J
James Smart 已提交
4482
	lpfc_set_disctmo(vport);
已提交
4483
	/* Send back ACC */
4484
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4485
	/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4486 4487
	lpfc_rscn_recovery_check(vport);
	return lpfc_els_handle_rscn(vport);
已提交
4488 4489
}

4490
/**
4491
 * lpfc_els_handle_rscn - Handle rscn for a vport
4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505
 * @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
4506
int
J
James Smart 已提交
4507
lpfc_els_handle_rscn(struct lpfc_vport *vport)
已提交
4508 4509
{
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
4510
	struct lpfc_hba *phba = vport->phba;
已提交
4511

4512 4513 4514 4515 4516 4517
	/* 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
4518
	/* Start timer for RSCN processing */
J
James Smart 已提交
4519
	lpfc_set_disctmo(vport);
已提交
4520 4521

	/* RSCN processed */
4522 4523 4524 4525
	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
4526 4527

	/* To process RSCN, first compare RSCN data with NameServer */
J
James Smart 已提交
4528
	vport->fc_ns_retry = 0;
4529 4530
	vport->num_disc_nodes = 0;

J
James Smart 已提交
4531
	ndlp = lpfc_findnode_did(vport, NameServer_DID);
4532 4533
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)
	    && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
已提交
4534
		/* Good ndlp, issue CT Request to NameServer */
4535
		if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
已提交
4536 4537
			/* Wait for NameServer query cmpl before we can
			   continue */
4538
			return 1;
已提交
4539 4540 4541
	} else {
		/* If login to NameServer does not exist, issue one */
		/* Good status, issue PLOGI to NameServer */
J
James Smart 已提交
4542
		ndlp = lpfc_findnode_did(vport, NameServer_DID);
4543
		if (ndlp && NLP_CHK_NODE_ACT(ndlp))
已提交
4544 4545
			/* Wait for NameServer login cmpl before we can
			   continue */
4546
			return 1;
J
James Smart 已提交
4547

4548 4549 4550 4551 4552 4553 4554 4555
		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
4556
		} else {
4557 4558 4559 4560 4561
			ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
			if (!ndlp) {
				lpfc_els_flush_rscn(vport);
				return 0;
			}
J
James Smart 已提交
4562
			lpfc_nlp_init(vport, ndlp, NameServer_DID);
4563
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
4564
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
已提交
4565
		}
4566 4567 4568 4569 4570 4571
		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
4572 4573
	}

J
James Smart 已提交
4574
	lpfc_els_flush_rscn(vport);
4575
	return 0;
已提交
4576 4577
}

4578
/**
4579
 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602
 * @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
4603
static int
J
James Smart 已提交
4604
lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4605
		   struct lpfc_nodelist *ndlp)
已提交
4606
{
J
James Smart 已提交
4607 4608
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622
	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
4623
	lpfc_set_disctmo(vport);
已提交
4624 4625 4626 4627 4628 4629 4630

	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 */
4631 4632 4633 4634
		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);
4635
		return 1;
已提交
4636 4637 4638 4639
	}

	did = Fabric_DID;

4640
	if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1))) {
已提交
4641 4642 4643 4644
		/* 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
4645
		rc = memcmp(&vport->fc_portname, &sp->portName,
4646
			    sizeof(struct lpfc_name));
已提交
4647 4648

		if (!rc) {
J
James Smart 已提交
4649 4650
			mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
			if (!mbox)
4651
				return 1;
J
James Smart 已提交
4652

已提交
4653 4654 4655 4656
			lpfc_linkdown(phba);
			lpfc_init_link(phba, mbox,
				       phba->cfg_topology,
				       phba->cfg_link_speed);
4657
			mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
已提交
4658
			mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4659
			mbox->vport = vport;
4660
			rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4661
			lpfc_set_loopback_flag(phba);
已提交
4662
			if (rc == MBX_NOT_FINISHED) {
4663
				mempool_free(mbox, phba->mbox_mem_pool);
已提交
4664
			}
4665
			return 1;
4666
		} else if (rc > 0) {	/* greater than */
J
James Smart 已提交
4667 4668 4669
			spin_lock_irq(shost->host_lock);
			vport->fc_flag |= FC_PT2PT_PLOGI;
			spin_unlock_irq(shost->host_lock);
已提交
4670
		}
J
James Smart 已提交
4671 4672 4673 4674
		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
4675 4676 4677 4678 4679 4680
	} 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
4681 4682
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
4683
		return 1;
已提交
4684 4685 4686
	}

	/* Send back ACC */
4687
	lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
已提交
4688

4689
	return 0;
已提交
4690 4691
}

4692
/**
4693
 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707
 * @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
4708
static int
J
James Smart 已提交
4709 4710
lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732
{
	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
4733
		lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
已提交
4734 4735 4736 4737 4738 4739 4740
		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
4741 4742
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
已提交
4743
	}
4744
	return 0;
已提交
4745 4746
}

4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770
/**
 * lpfc_els_rcv_echo - Process an unsolicited echo 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.
 *
 * Return code
 *   0 - Successfully processed echo iocb (currently always return 0)
 **/
static int
lpfc_els_rcv_echo(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
{
	uint8_t *pcmd;

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

	/* skip over first word of echo command to find echo data */
	pcmd += sizeof(uint32_t);

	lpfc_els_rsp_echo_acc(vport, pcmd, cmdiocb, ndlp);
	return 0;
}

4771
/**
4772
 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783
 * @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
4784
static int
J
James Smart 已提交
4785 4786
lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
4787 4788 4789 4790 4791 4792 4793 4794
{
	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
4795
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4796 4797 4798
	return 0;
}

4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821
/**
 * 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);
}

4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904
/**
 * lpfc_els_rsp_rls_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
 * @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.
 *
 **/
static void
lpfc_els_rsp_rls_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
	MAILBOX_t *mb;
	IOCB_t *icmd;
	struct RLS_RSP *rls_rsp;
	uint8_t *pcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_nodelist *ndlp;
	uint16_t xri;
	uint32_t cmdsize;

	mb = &pmb->u.mb;

	ndlp = (struct lpfc_nodelist *) pmb->context2;
	xri = (uint16_t) ((unsigned long)(pmb->context1));
	pmb->context1 = NULL;
	pmb->context2 = NULL;

	if (mb->mbxStatus) {
		mempool_free(pmb, phba->mbox_mem_pool);
		return;
	}

	cmdsize = sizeof(struct RLS_RSP) + sizeof(uint32_t);
	mempool_free(pmb, phba->mbox_mem_pool);
	elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
				     lpfc_max_els_tries, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);

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

	if (!elsiocb)
		return;

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

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

	rls_rsp->linkFailureCnt = cpu_to_be32(mb->un.varRdLnk.linkFailureCnt);
	rls_rsp->lossSyncCnt = cpu_to_be32(mb->un.varRdLnk.lossSyncCnt);
	rls_rsp->lossSignalCnt = cpu_to_be32(mb->un.varRdLnk.lossSignalCnt);
	rls_rsp->primSeqErrCnt = cpu_to_be32(mb->un.varRdLnk.primSeqErrCnt);
	rls_rsp->invalidXmitWord = cpu_to_be32(mb->un.varRdLnk.invalidXmitWord);
	rls_rsp->crcCnt = cpu_to_be32(mb->un.varRdLnk.crcCnt);

	/* Xmit ELS RLS ACC response tag <ulpIoTag> */
	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
			 "2874 Xmit ELS RLS 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);
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
	phba->fc_stat.elsXmitACC++;
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
		lpfc_els_free_iocb(phba, elsiocb);
}

4905
/**
4906
 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923
 * @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.
 *
 **/
4924
static void
4925
lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4926 4927 4928 4929 4930 4931 4932 4933 4934 4935
{
	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;

4936
	mb = &pmb->u.mb;
4937 4938 4939

	ndlp = (struct lpfc_nodelist *) pmb->context2;
	xri = (uint16_t) ((unsigned long)(pmb->context1));
R
Randy Dunlap 已提交
4940 4941
	pmb->context1 = NULL;
	pmb->context2 = NULL;
4942 4943

	if (mb->mbxStatus) {
4944
		mempool_free(pmb, phba->mbox_mem_pool);
4945 4946 4947 4948
		return;
	}

	cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
4949
	mempool_free(pmb, phba->mbox_mem_pool);
J
James Smart 已提交
4950 4951 4952
	elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
				     lpfc_max_els_tries, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
4953 4954

	/* Decrement the ndlp reference count from previous mbox command */
4955
	lpfc_nlp_put(ndlp);
4956

4957
	if (!elsiocb)
4958 4959 4960 4961 4962 4963 4964
		return;

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

	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4965
	pcmd += sizeof(uint32_t); /* Skip past command */
4966 4967 4968 4969 4970 4971
	rps_rsp = (RPS_RSP *)pcmd;

	if (phba->fc_topology != TOPOLOGY_LOOP)
		status = 0x10;
	else
		status = 0x8;
J
James Smart 已提交
4972
	if (phba->pport->fc_flag & FC_FABRIC)
4973 4974 4975
		status |= 0x4;

	rps_rsp->rsvd1 = 0;
4976 4977 4978 4979 4980 4981 4982
	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);
4983
	/* Xmit ELS RPS ACC response tag <ulpIoTag> */
4984 4985 4986 4987 4988 4989
	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
4990
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4991
	phba->fc_stat.elsXmitACC++;
4992
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
4993 4994 4995 4996
		lpfc_els_free_iocb(phba, elsiocb);
	return;
}

4997
/**
4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146
 * lpfc_els_rcv_rls - Process an unsolicited rls 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 Read Port Status (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 state or NLP_STE_MAPPED_NODE
 * state, it invokes the lpfc_els_rsl_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_rls_acc(), set to the MBX_READ_LNK_STAT mailbox command
 * to actually sending out RPL Accept (ACC) response.
 *
 * Return codes
 *   0 - Successfully processed rls iocb (currently always return 0)
 **/
static int
lpfc_els_rcv_rls(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
{
	struct lpfc_hba *phba = vport->phba;
	LPFC_MBOXQ_t *mbox;
	struct lpfc_dmabuf *pcmd;
	struct ls_rjt stat;

	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
		/* reject the unsolicited RPS request and done with it */
		goto reject_out;

	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;

	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
	if (mbox) {
		lpfc_read_lnk_stat(phba, mbox);
		mbox->context1 =
		    (void *)((unsigned long) cmdiocb->iocb.ulpContext);
		mbox->context2 = lpfc_nlp_get(ndlp);
		mbox->vport = vport;
		mbox->mbox_cmpl = lpfc_els_rsp_rls_acc;
		if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
			!= MBX_NOT_FINISHED)
			/* Mbox completion will send ELS Response */
			return 0;
		/* Decrement reference count used for the failed mbox
		 * command.
		 */
		lpfc_nlp_put(ndlp);
		mempool_free(mbox, phba->mbox_mem_pool);
	}
reject_out:
	/* issue rejection response */
	stat.un.b.lsRjtRsvd0 = 0;
	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
	stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
	stat.un.b.vendorUnique = 0;
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
	return 0;
}

/**
 * lpfc_els_rcv_rtv - Process an unsolicited rtv 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 Read Timout Value (RTV) 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_rsl_reject() routine to send the reject
 * response. Otherwise, it sends the Accept(ACC) response to a Read Timeout
 * Value (RTV) unsolicited IOCB event.
 *
 * 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.
 *
 * Return codes
 *   0 - Successfully processed rtv iocb (currently always return 0)
 **/
static int
lpfc_els_rcv_rtv(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
{
	struct lpfc_hba *phba = vport->phba;
	struct ls_rjt stat;
	struct RTV_RSP *rtv_rsp;
	uint8_t *pcmd;
	struct lpfc_iocbq *elsiocb;
	uint32_t cmdsize;


	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
		/* reject the unsolicited RPS request and done with it */
		goto reject_out;

	cmdsize = sizeof(struct RTV_RSP) + sizeof(uint32_t);
	elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
				     lpfc_max_els_tries, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);

	if (!elsiocb)
		return 1;

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

	/* use the command's xri in the response */
	elsiocb->iocb.ulpContext = cmdiocb->iocb.ulpContext;

	rtv_rsp = (struct RTV_RSP *)pcmd;

	/* populate RTV payload */
	rtv_rsp->ratov = cpu_to_be32(phba->fc_ratov * 1000); /* report msecs */
	rtv_rsp->edtov = cpu_to_be32(phba->fc_edtov);
	bf_set(qtov_edtovres, rtv_rsp, phba->fc_edtovResol ? 1 : 0);
	bf_set(qtov_rttov, rtv_rsp, 0); /* Field is for FC ONLY */
	rtv_rsp->qtov = cpu_to_be32(rtv_rsp->qtov);

	/* Xmit ELS RLS ACC response tag <ulpIoTag> */
	lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_ELS,
			 "2875 Xmit ELS RTV ACC response tag x%x xri x%x, "
			 "did x%x, nlp_flag x%x, nlp_state x%x, rpi x%x, "
			 "Data: x%x x%x x%x\n",
			 elsiocb->iotag, elsiocb->iocb.ulpContext,
			 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
			 ndlp->nlp_rpi,
			rtv_rsp->ratov, rtv_rsp->edtov, rtv_rsp->qtov);
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
	phba->fc_stat.elsXmitACC++;
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
		lpfc_els_free_iocb(phba, elsiocb);
	return 0;

reject_out:
	/* issue rejection response */
	stat.un.b.lsRjtRsvd0 = 0;
	stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
	stat.un.b.lsRjtRsnCodeExp = LSEXP_CANT_GIVE_DATA;
	stat.un.b.vendorUnique = 0;
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
	return 0;
}

/* lpfc_els_rcv_rps - Process an unsolicited rps iocb
5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162
 * @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)
 **/
5163
static int
J
James Smart 已提交
5164 5165
lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
已提交
5166
{
J
James Smart 已提交
5167
	struct lpfc_hba *phba = vport->phba;
已提交
5168
	uint32_t *lp;
5169 5170 5171 5172 5173 5174
	uint8_t flag;
	LPFC_MBOXQ_t *mbox;
	struct lpfc_dmabuf *pcmd;
	RPS *rps;
	struct ls_rjt stat;

5175
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
5176 5177 5178
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
		/* reject the unsolicited RPS request and done with it */
		goto reject_out;
5179 5180 5181 5182 5183 5184 5185 5186

	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
5187
	    ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
5188
				    sizeof(struct lpfc_name)) == 0))) {
J
James Smart 已提交
5189

5190 5191
		printk("Fix me....\n");
		dump_stack();
J
James Smart 已提交
5192 5193
		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
		if (mbox) {
5194 5195
			lpfc_read_lnk_stat(phba, mbox);
			mbox->context1 =
5196
			    (void *)((unsigned long) cmdiocb->iocb.ulpContext);
5197
			mbox->context2 = lpfc_nlp_get(ndlp);
5198
			mbox->vport = vport;
5199
			mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
5200
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5201
				!= MBX_NOT_FINISHED)
5202 5203
				/* Mbox completion will send ELS Response */
				return 0;
5204 5205 5206
			/* Decrement reference count used for the failed mbox
			 * command.
			 */
5207
			lpfc_nlp_put(ndlp);
5208 5209 5210
			mempool_free(mbox, phba->mbox_mem_pool);
		}
	}
5211 5212 5213

reject_out:
	/* issue rejection response */
5214 5215 5216 5217
	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
5218
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
5219 5220 5221
	return 0;
}

5222
/**
5223
 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240
 * @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
 **/
5241
static int
J
James Smart 已提交
5242 5243
lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
		     struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
5244
{
J
James Smart 已提交
5245 5246
	struct lpfc_hba *phba = vport->phba;
	IOCB_t *icmd, *oldcmd;
5247 5248 5249
	RPL_RSP rpl_rsp;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
已提交
5250

J
James Smart 已提交
5251 5252
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
5253

5254
	if (!elsiocb)
5255
		return 1;
5256

5257 5258 5259 5260 5261 5262
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

	pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
5263
	pcmd += sizeof(uint16_t);
5264 5265 5266 5267 5268 5269 5270
	*((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
5271 5272
	rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
	memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
5273 5274 5275
	    sizeof(struct lpfc_name));
	memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
	/* Xmit ELS RPL ACC response tag <ulpIoTag> */
5276 5277 5278 5279 5280 5281 5282
	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
5283
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
5284
	phba->fc_stat.elsXmitACC++;
5285 5286
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
5287 5288 5289 5290 5291 5292
		lpfc_els_free_iocb(phba, elsiocb);
		return 1;
	}
	return 0;
}

5293
/**
5294
 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308
 * @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)
 **/
5309
static int
J
James Smart 已提交
5310 5311
lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
5312 5313 5314 5315 5316 5317 5318 5319
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	uint32_t maxsize;
	uint16_t cmdsize;
	RPL *rpl;
	struct ls_rjt stat;

5320 5321
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
5322
		/* issue rejection response */
5323 5324 5325 5326
		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
5327 5328
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
5329 5330
		/* rejected the unsolicited RPL request and done with it */
		return 0;
5331 5332
	}

已提交
5333 5334
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;
5335 5336
	rpl = (RPL *) (lp + 1);
	maxsize = be32_to_cpu(rpl->maxsize);
已提交
5337

5338 5339 5340 5341 5342
	/* 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);
5343
	} else {
5344 5345
		cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
	}
J
James Smart 已提交
5346
	lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
已提交
5347 5348 5349 5350

	return 0;
}

5351
/**
5352
 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374
 * @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
5375
static int
J
James Smart 已提交
5376 5377
lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392
{
	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> */
5393 5394
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0601 FARP-REQ received from DID x%x\n", did);
已提交
5395 5396
	/* We will only support match on WWPN or WWNN */
	if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
5397
		return 0;
已提交
5398 5399 5400 5401 5402
	}

	cnt = 0;
	/* If this FARP command is searching for my portname */
	if (fp->Mflags & FARP_MATCH_PORT) {
J
James Smart 已提交
5403
		if (memcmp(&fp->RportName, &vport->fc_portname,
5404
			   sizeof(struct lpfc_name)) == 0)
已提交
5405 5406 5407 5408 5409
			cnt = 1;
	}

	/* If this FARP command is searching for my nodename */
	if (fp->Mflags & FARP_MATCH_NODE) {
J
James Smart 已提交
5410
		if (memcmp(&fp->RnodeName, &vport->fc_nodename,
5411
			   sizeof(struct lpfc_name)) == 0)
已提交
5412 5413 5414 5415 5416 5417 5418 5419
			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) {
5420
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
5421
				lpfc_nlp_set_state(vport, ndlp,
5422
						   NLP_STE_PLOGI_ISSUE);
J
James Smart 已提交
5423
				lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
已提交
5424 5425 5426
			}

			/* Send a FARP response to that node */
J
James Smart 已提交
5427 5428
			if (fp->Rflags & FARP_REQUEST_FARPR)
				lpfc_issue_els_farpr(vport, did, 0);
已提交
5429 5430
		}
	}
5431
	return 0;
已提交
5432 5433
}

5434
/**
5435
 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447
 * @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
5448
static int
J
James Smart 已提交
5449 5450
lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_nodelist  *ndlp)
已提交
5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463
{
	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> */
5464 5465
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0600 FARP-RSP received from DID x%x\n", did);
已提交
5466
	/* ACCEPT the Farp resp request */
5467
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
5468 5469 5470 5471

	return 0;
}

5472
/**
5473
 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490
 * @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
5491
static int
J
James Smart 已提交
5492 5493
lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *fan_ndlp)
已提交
5494
{
5495
	struct lpfc_hba *phba = vport->phba;
已提交
5496
	uint32_t *lp;
5497
	FAN *fp;
已提交
5498

5499 5500 5501
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
	lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
	fp = (FAN *) ++lp;
5502
	/* FAN received; Fan does not have a reply sequence */
5503 5504
	if ((vport == phba->pport) &&
	    (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
5505
		if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
5506
			    sizeof(struct lpfc_name))) ||
5507
		    (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
5508 5509
			    sizeof(struct lpfc_name)))) {
			/* This port has switched fabrics. FLOGI is required */
J
James Smart 已提交
5510
			lpfc_initial_flogi(vport);
5511 5512 5513
		} else {
			/* FAN verified - skip FLOGI */
			vport->fc_myDID = vport->fc_prevDID;
5514 5515 5516 5517
			if (phba->sli_rev < LPFC_SLI_REV4)
				lpfc_issue_fabric_reglogin(vport);
			else
				lpfc_issue_reg_vfi(vport);
5518
		}
已提交
5519
	}
5520
	return 0;
已提交
5521 5522
}

5523
/**
5524
 * lpfc_els_timeout - Handler funciton to the els timer
5525 5526 5527 5528 5529 5530 5531 5532
 * @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
5533 5534 5535
void
lpfc_els_timeout(unsigned long ptr)
{
J
James Smart 已提交
5536 5537
	struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
	struct lpfc_hba   *phba = vport->phba;
5538
	uint32_t tmo_posted;
已提交
5539 5540
	unsigned long iflag;

J
James Smart 已提交
5541
	spin_lock_irqsave(&vport->work_port_lock, iflag);
5542 5543
	tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
	if (!tmo_posted)
J
James Smart 已提交
5544
		vport->work_port_events |= WORKER_ELS_TMO;
5545
	spin_unlock_irqrestore(&vport->work_port_lock, iflag);
5546

5547 5548
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
已提交
5549 5550 5551
	return;
}

5552

5553
/**
5554
 * lpfc_els_timeout_handler - Process an els timeout event
5555 5556 5557 5558 5559 5560 5561
 * @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
5562
void
J
James Smart 已提交
5563
lpfc_els_timeout_handler(struct lpfc_vport *vport)
已提交
5564
{
J
James Smart 已提交
5565
	struct lpfc_hba  *phba = vport->phba;
已提交
5566 5567 5568 5569
	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
5570
	uint32_t els_command = 0;
已提交
5571
	uint32_t timeout;
J
James Smart 已提交
5572
	uint32_t remote_ID = 0xffffffff;
5573 5574 5575
	LIST_HEAD(txcmplq_completions);
	LIST_HEAD(abort_list);

已提交
5576 5577 5578 5579 5580

	timeout = (uint32_t)(phba->fc_ratov << 1);

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

5581 5582 5583 5584 5585
	spin_lock_irq(&phba->hbalock);
	list_splice_init(&pring->txcmplq, &txcmplq_completions);
	spin_unlock_irq(&phba->hbalock);

	list_for_each_entry_safe(piocb, tmp_iocb, &txcmplq_completions, list) {
已提交
5586 5587
		cmd = &piocb->iocb;

J
James Smart 已提交
5588 5589 5590
		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
5591
			continue;
J
James Smart 已提交
5592 5593 5594 5595

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

已提交
5596
		pcmd = (struct lpfc_dmabuf *) piocb->context2;
J
James Smart 已提交
5597 5598
		if (pcmd)
			els_command = *(uint32_t *) (pcmd->virt);
已提交
5599

5600 5601 5602 5603 5604
		if (els_command == ELS_CMD_FARP ||
		    els_command == ELS_CMD_FARPR ||
		    els_command == ELS_CMD_FDISC)
			continue;

已提交
5605
		if (piocb->drvrTimeout > 0) {
5606
			if (piocb->drvrTimeout >= timeout)
已提交
5607
				piocb->drvrTimeout -= timeout;
5608
			else
已提交
5609 5610 5611 5612
				piocb->drvrTimeout = 0;
			continue;
		}

J
James Smart 已提交
5613 5614
		remote_ID = 0xffffffff;
		if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
已提交
5615
			remote_ID = cmd->un.elsreq64.remoteID;
J
James Smart 已提交
5616 5617 5618
		else {
			struct lpfc_nodelist *ndlp;
			ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
5619
			if (ndlp && NLP_CHK_NODE_ACT(ndlp))
J
James Smart 已提交
5620
				remote_ID = ndlp->nlp_DID;
已提交
5621
		}
5622 5623 5624 5625 5626 5627 5628
		list_add_tail(&piocb->dlist, &abort_list);
	}
	spin_lock_irq(&phba->hbalock);
	list_splice(&txcmplq_completions, &pring->txcmplq);
	spin_unlock_irq(&phba->hbalock);

	list_for_each_entry_safe(piocb, tmp_iocb, &abort_list, dlist) {
5629
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5630 5631 5632 5633 5634
			 "0127 ELS timeout Data: x%x x%x x%x "
			 "x%x\n", els_command,
			 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
		spin_lock_irq(&phba->hbalock);
		list_del_init(&piocb->dlist);
5635
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5636
		spin_unlock_irq(&phba->hbalock);
已提交
5637
	}
5638

J
James Smart 已提交
5639 5640
	if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
		mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
已提交
5641 5642
}

5643
/**
5644
 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662
 * @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
5663
void
J
James Smart 已提交
5664
lpfc_els_flush_cmd(struct lpfc_vport *vport)
已提交
5665
{
5666
	LIST_HEAD(completions);
J
James Smart 已提交
5667
	struct lpfc_hba  *phba = vport->phba;
5668
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
已提交
5669 5670
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;
5671 5672

	lpfc_fabric_abort_vport(vport);
已提交
5673

J
James Smart 已提交
5674
	spin_lock_irq(&phba->hbalock);
已提交
5675 5676 5677 5678 5679 5680 5681 5682
	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 */
5683 5684 5685 5686
		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
5687 5688
			continue;

J
James Smart 已提交
5689 5690 5691
		if (piocb->vport != vport)
			continue;

5692
		list_move_tail(&piocb->list, &completions);
5693
		pring->txq_cnt--;
已提交
5694 5695 5696 5697 5698 5699 5700
	}

	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
5701 5702 5703
		if (piocb->vport != vport)
			continue;

5704
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
5705
	}
J
James Smart 已提交
5706
	spin_unlock_irq(&phba->hbalock);
5707

5708 5709 5710
	/* Cancell all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
5711

已提交
5712 5713 5714
	return;
}

5715
/**
5716
 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731
 * @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.
 **/
5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760
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);
5761 5762 5763 5764 5765

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

5766 5767 5768
	return;
}

5769
/**
5770
 * lpfc_send_els_failure_event - Posts an ELS command failure event
5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803
 * @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);
J
James Smart 已提交
5804
		lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
5805 5806 5807 5808 5809 5810 5811
		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,
5812
			LPFC_NL_VENDOR_ID);
5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829
		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,
5830
			LPFC_NL_VENDOR_ID);
5831 5832 5833 5834 5835 5836
		return;
	}

}

/**
5837
 * lpfc_send_els_event - Posts unsolicited els event
5838 5839 5840 5841 5842 5843 5844 5845 5846 5847
 * @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,
5848
		    uint32_t *payload)
5849
{
5850 5851
	struct lpfc_els_event_header *els_data = NULL;
	struct lpfc_logo_event *logo_data = NULL;
5852 5853
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874
	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) {
5875
	case ELS_CMD_PLOGI:
5876
		els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
5877 5878
		break;
	case ELS_CMD_PRLO:
5879
		els_data->subcategory = LPFC_EVENT_PRLO_RCV;
5880 5881
		break;
	case ELS_CMD_ADISC:
5882 5883 5884 5885 5886 5887 5888
		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));
5889 5890
		break;
	default:
5891
		kfree(els_data);
5892 5893
		return;
	}
5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910
	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);
	}
5911 5912 5913 5914 5915

	return;
}


5916
/**
5917
 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
5918 5919 5920 5921 5922 5923 5924 5925 5926 5927 5928 5929
 * @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.
 **/
5930 5931
static void
lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5932
		      struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
已提交
5933
{
5934
	struct Scsi_Host  *shost;
已提交
5935 5936
	struct lpfc_nodelist *ndlp;
	struct ls_rjt stat;
5937
	uint32_t *payload;
J
James Smart 已提交
5938
	uint32_t cmd, did, newnode, rjt_err = 0;
5939
	IOCB_t *icmd = &elsiocb->iocb;
已提交
5940

5941
	if (!vport || !(elsiocb->context2))
已提交
5942
		goto dropit;
J
James Smart 已提交
5943

已提交
5944
	newnode = 0;
5945 5946
	payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
	cmd = *payload;
5947
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
5948
		lpfc_post_buffer(phba, pring, 1);
已提交
5949

J
James Smart 已提交
5950 5951 5952 5953 5954
	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
5955
		goto dropit;
J
James Smart 已提交
5956
	}
已提交
5957 5958

	/* Check to see if link went down during discovery */
5959
	if (lpfc_els_chk_latt(vport))
已提交
5960 5961
		goto dropit;

5962
	/* Ignore traffic received during vport shutdown. */
5963 5964 5965
	if (vport->load_flag & FC_UNLOADING)
		goto dropit;

J
James Smart 已提交
5966
	ndlp = lpfc_findnode_did(vport, did);
5967
	if (!ndlp) {
已提交
5968
		/* Cannot find existing Fabric ndlp, so allocate a new one */
5969
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5970
		if (!ndlp)
已提交
5971 5972
			goto dropit;

J
James Smart 已提交
5973
		lpfc_nlp_init(vport, ndlp, did);
5974
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
已提交
5975
		newnode = 1;
5976
		if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
已提交
5977
			ndlp->nlp_type |= NLP_FABRIC;
5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 5988 5989 5990 5991 5992 5993
	} 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;
5994
	}
已提交
5995 5996

	phba->fc_stat.elsRcvFrame++;
5997

5998
	elsiocb->context1 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
5999
	elsiocb->vport = vport;
已提交
6000 6001 6002 6003 6004

	if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
		cmd &= ELS_CMD_MASK;
	}
	/* ELS command <elsCmd> received from NPORT <did> */
6005 6006 6007
	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
6008 6009
	switch (cmd) {
	case ELS_CMD_PLOGI:
J
James Smart 已提交
6010 6011 6012 6013
		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
6014
		phba->fc_stat.elsRcvPLOGI++;
J
James Smart 已提交
6015 6016
		ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);

6017
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
6018
		if (vport->port_state < LPFC_DISC_AUTH) {
6019 6020 6021 6022 6023 6024 6025 6026 6027
			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
6028
		}
6029 6030 6031 6032 6033 6034

		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
6035 6036
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PLOGI);
J
James Smart 已提交
6037

已提交
6038 6039
		break;
	case ELS_CMD_FLOGI:
J
James Smart 已提交
6040 6041 6042 6043
		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
6044
		phba->fc_stat.elsRcvFLOGI++;
6045
		lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
6046
		if (newnode)
6047
			lpfc_nlp_put(ndlp);
已提交
6048 6049
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
6050 6051 6052 6053
		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
6054
		phba->fc_stat.elsRcvLOGO++;
6055
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
6056
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
6057
			rjt_err = LSRJT_UNABLE_TPC;
已提交
6058 6059
			break;
		}
J
James Smart 已提交
6060
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
已提交
6061 6062
		break;
	case ELS_CMD_PRLO:
J
James Smart 已提交
6063 6064 6065 6066
		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
6067
		phba->fc_stat.elsRcvPRLO++;
6068
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
6069
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
6070
			rjt_err = LSRJT_UNABLE_TPC;
已提交
6071 6072
			break;
		}
J
James Smart 已提交
6073
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
已提交
6074 6075 6076
		break;
	case ELS_CMD_RSCN:
		phba->fc_stat.elsRcvRSCN++;
6077
		lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
6078
		if (newnode)
6079
			lpfc_nlp_put(ndlp);
已提交
6080 6081
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
6082 6083 6084 6085
		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);

6086
		lpfc_send_els_event(vport, ndlp, payload);
已提交
6087
		phba->fc_stat.elsRcvADISC++;
J
James Smart 已提交
6088
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
6089
			rjt_err = LSRJT_UNABLE_TPC;
已提交
6090 6091
			break;
		}
J
James Smart 已提交
6092 6093
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_ADISC);
已提交
6094 6095
		break;
	case ELS_CMD_PDISC:
J
James Smart 已提交
6096 6097 6098 6099
		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
6100
		phba->fc_stat.elsRcvPDISC++;
J
James Smart 已提交
6101
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
6102
			rjt_err = LSRJT_UNABLE_TPC;
已提交
6103 6104
			break;
		}
J
James Smart 已提交
6105 6106
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PDISC);
已提交
6107 6108
		break;
	case ELS_CMD_FARPR:
J
James Smart 已提交
6109 6110 6111 6112
		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
6113
		phba->fc_stat.elsRcvFARPR++;
J
James Smart 已提交
6114
		lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
已提交
6115 6116
		break;
	case ELS_CMD_FARP:
J
James Smart 已提交
6117 6118 6119 6120
		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
6121
		phba->fc_stat.elsRcvFARP++;
J
James Smart 已提交
6122
		lpfc_els_rcv_farp(vport, elsiocb, ndlp);
已提交
6123 6124
		break;
	case ELS_CMD_FAN:
J
James Smart 已提交
6125 6126 6127 6128
		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
6129
		phba->fc_stat.elsRcvFAN++;
J
James Smart 已提交
6130
		lpfc_els_rcv_fan(vport, elsiocb, ndlp);
已提交
6131 6132
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
6133 6134 6135 6136
		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
6137
		phba->fc_stat.elsRcvPRLI++;
J
James Smart 已提交
6138
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
6139
			rjt_err = LSRJT_UNABLE_TPC;
已提交
6140 6141
			break;
		}
J
James Smart 已提交
6142
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
已提交
6143
		break;
6144
	case ELS_CMD_LIRR:
J
James Smart 已提交
6145 6146 6147 6148
		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);

6149
		phba->fc_stat.elsRcvLIRR++;
J
James Smart 已提交
6150
		lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
6151
		if (newnode)
6152
			lpfc_nlp_put(ndlp);
6153
		break;
6154 6155 6156 6157 6158 6159 6160 6161 6162 6163
	case ELS_CMD_RLS:
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RLS:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

		phba->fc_stat.elsRcvRLS++;
		lpfc_els_rcv_rls(vport, elsiocb, ndlp);
		if (newnode)
			lpfc_nlp_put(ndlp);
		break;
6164
	case ELS_CMD_RPS:
J
James Smart 已提交
6165 6166 6167 6168
		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);

6169
		phba->fc_stat.elsRcvRPS++;
J
James Smart 已提交
6170
		lpfc_els_rcv_rps(vport, elsiocb, ndlp);
6171
		if (newnode)
6172
			lpfc_nlp_put(ndlp);
6173 6174
		break;
	case ELS_CMD_RPL:
J
James Smart 已提交
6175 6176 6177 6178
		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);

6179
		phba->fc_stat.elsRcvRPL++;
J
James Smart 已提交
6180
		lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
6181
		if (newnode)
6182
			lpfc_nlp_put(ndlp);
6183
		break;
已提交
6184
	case ELS_CMD_RNID:
J
James Smart 已提交
6185 6186 6187 6188
		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
6189
		phba->fc_stat.elsRcvRNID++;
J
James Smart 已提交
6190
		lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
6191
		if (newnode)
6192
			lpfc_nlp_put(ndlp);
已提交
6193
		break;
6194 6195 6196 6197 6198 6199 6200 6201 6202
	case ELS_CMD_RTV:
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RTV:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);
		phba->fc_stat.elsRcvRTV++;
		lpfc_els_rcv_rtv(vport, elsiocb, ndlp);
		if (newnode)
			lpfc_nlp_put(ndlp);
		break;
6203 6204 6205 6206 6207 6208 6209 6210 6211 6212
	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;
6213 6214 6215 6216 6217 6218 6219 6220 6221 6222
	case ELS_CMD_ECHO:
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV ECHO:        did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

		phba->fc_stat.elsRcvECHO++;
		lpfc_els_rcv_echo(vport, elsiocb, ndlp);
		if (newnode)
			lpfc_nlp_put(ndlp);
		break;
已提交
6223
	default:
J
James Smart 已提交
6224 6225 6226 6227
		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
6228
		/* Unsupported ELS command, reject */
J
James Smart 已提交
6229
		rjt_err = LSRJT_INVALID_CMD;
已提交
6230 6231

		/* Unknown ELS command <elsCmd> received from NPORT <did> */
6232 6233 6234
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0115 Unknown ELS command x%x "
				 "received from NPORT x%x\n", cmd, did);
6235
		if (newnode)
6236
			lpfc_nlp_put(ndlp);
已提交
6237 6238 6239 6240 6241
		break;
	}

	/* check if need to LS_RJT received ELS cmd */
	if (rjt_err) {
6242
		memset(&stat, 0, sizeof(stat));
J
James Smart 已提交
6243
		stat.un.b.lsRjtRsnCode = rjt_err;
6244
		stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
J
James Smart 已提交
6245 6246
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
			NULL);
已提交
6247 6248
	}

6249 6250
	lpfc_nlp_put(elsiocb->context1);
	elsiocb->context1 = NULL;
6251 6252 6253
	return;

dropit:
6254
	if (vport && !(vport->load_flag & FC_UNLOADING))
6255 6256
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
			"0111 Dropping received ELS cmd "
6257
			"Data: x%x x%x x%x\n",
6258
			icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
6259 6260 6261
	phba->fc_stat.elsRcvDrop++;
}

6262
/**
6263
 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274
 * @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.
 **/
6275
struct lpfc_vport *
6276 6277 6278
lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
{
	struct lpfc_vport *vport;
6279
	unsigned long flags;
6280

6281
	spin_lock_irqsave(&phba->hbalock, flags);
6282
	list_for_each_entry(vport, &phba->port_list, listentry) {
6283 6284
		if (vport->vpi == vpi) {
			spin_unlock_irqrestore(&phba->hbalock, flags);
6285
			return vport;
6286
		}
6287
	}
6288
	spin_unlock_irqrestore(&phba->hbalock, flags);
6289 6290
	return NULL;
}
6291

6292
/**
6293
 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
6294 6295 6296 6297 6298 6299 6300 6301 6302 6303
 * @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.
 **/
6304 6305 6306 6307 6308 6309 6310
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;
6311 6312 6313
	struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
	struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;

6314
	elsiocb->context1 = NULL;
6315 6316
	elsiocb->context2 = NULL;
	elsiocb->context3 = NULL;
6317

6318 6319 6320 6321
	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) {
6322 6323
		phba->fc_stat.NoRcvBuf++;
		/* Not enough posted buffers; Try posting more buffers */
6324
		if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
6325
			lpfc_post_buffer(phba, pring, 0);
6326 6327 6328
		return;
	}

6329 6330 6331 6332 6333
	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;
6334 6335 6336
		else
			vport = lpfc_find_vport_by_vpid(phba,
				icmd->unsli3.rcvsli3.vpi - phba->vpi_base);
6337
	}
6338 6339 6340
	/* If there are no BDEs associated
	 * with this IOCB, there is nothing to do.
	 */
6341 6342 6343
	if (icmd->ulpBdeCount == 0)
		return;

6344 6345 6346
	/* type of ELS cmd is first 32bit word
	 * in packet
	 */
6347
	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
6348
		elsiocb->context2 = bdeBuf1;
6349 6350 6351
	} else {
		paddr = getPaddr(icmd->un.cont64[0].addrHigh,
				 icmd->un.cont64[0].addrLow);
6352 6353
		elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
							     paddr);
6354 6355
	}

6356 6357 6358 6359 6360
	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
6361
	if (elsiocb->context2) {
6362 6363
		lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
		elsiocb->context2 = NULL;
已提交
6364
	}
6365 6366

	/* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
6367
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
6368
	    icmd->ulpBdeCount == 2) {
6369 6370
		elsiocb->context2 = bdeBuf2;
		lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
6371 6372
		/* free mp if we are done with it */
		if (elsiocb->context2) {
6373 6374 6375 6376 6377 6378
			lpfc_in_buf_free(phba, elsiocb->context2);
			elsiocb->context2 = NULL;
		}
	}
}

6379
/**
6380
 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391
 * @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.
 **/
6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405
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);
6406 6407
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					 "0251 NameServer login: no memory\n");
6408 6409 6410
			return;
		}
		lpfc_nlp_init(vport, ndlp, NameServer_DID);
6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422
	} 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;
		}
6423
	}
6424
	ndlp->nlp_type |= NLP_FABRIC;
6425 6426 6427 6428 6429

	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);
6430 6431
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0252 Cannot issue NameServer login\n");
6432 6433 6434
		return;
	}

6435
	if (vport->cfg_fdmi_on) {
6436 6437 6438 6439 6440
		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;
6441 6442
			lpfc_nlp_set_state(vport, ndlp_fdmi,
				NLP_STE_PLOGI_ISSUE);
6443 6444 6445 6446 6447 6448 6449
			lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
					     0);
		}
	}
	return;
}

6450
/**
6451
 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
6452 6453 6454 6455 6456 6457 6458 6459 6460 6461
 * @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).
 **/
6462 6463 6464 6465 6466 6467
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;
6468
	MAILBOX_t *mb = &pmb->u.mb;
6469
	int rc;
6470

6471
	spin_lock_irq(shost->host_lock);
6472
	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
6473
	spin_unlock_irq(shost->host_lock);
6474 6475

	if (mb->mbxStatus) {
6476
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
6477 6478 6479 6480 6481 6482
				"0915 Register VPI failed : Status: x%x"
				" upd bit: x%x \n", mb->mbxStatus,
				 mb->un.varRegVpi.upd);
		if (phba->sli_rev == LPFC_SLI_REV4 &&
			mb->un.varRegVpi.upd)
			goto mbox_err_exit ;
6483 6484 6485 6486

		switch (mb->mbxStatus) {
		case 0x11:	/* unsupported feature */
		case 0x9603:	/* max_vpi exceeded */
6487
		case 0x9602:	/* Link event since CLEAR_LA */
6488 6489 6490 6491 6492 6493 6494
			/* 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;
6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514
		/* 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;
			}

6515 6516 6517
		default:
			/* Try to recover from this error */
			lpfc_mbx_unreg_vpi(vport);
6518
			spin_lock_irq(shost->host_lock);
6519
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6520
			spin_unlock_irq(shost->host_lock);
J
James Smart 已提交
6521 6522
			if (vport->port_type == LPFC_PHYSICAL_PORT
				&& !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
6523 6524 6525
				lpfc_initial_flogi(vport);
			else
				lpfc_initial_fdisc(vport);
6526 6527 6528
			break;
		}
	} else {
6529
		spin_lock_irq(shost->host_lock);
6530
		vport->vpi_state |= LPFC_VPI_REGISTERED;
6531 6532
		spin_unlock_irq(shost->host_lock);
		if (vport == phba->pport) {
6533 6534
			if (phba->sli_rev < LPFC_SLI_REV4)
				lpfc_issue_fabric_reglogin(vport);
6535
			else {
6536 6537 6538 6539 6540 6541
				/*
				 * If the physical port is instantiated using
				 * FDISC, do not start vport discovery.
				 */
				if (vport->port_state != LPFC_FDISC)
					lpfc_start_fdiscs(phba);
6542 6543 6544
				lpfc_do_scr_ns_plogi(phba, vport);
			}
		} else
6545 6546
			lpfc_do_scr_ns_plogi(phba, vport);
	}
6547
mbox_err_exit:
6548 6549 6550 6551 6552
	/* Now, we decrement the ndlp reference count held for this
	 * callback function
	 */
	lpfc_nlp_put(ndlp);

6553 6554 6555 6556
	mempool_free(pmb, phba->mbox_mem_pool);
	return;
}

6557
/**
6558
 * lpfc_register_new_vport - Register a new vport with a HBA
6559 6560 6561 6562 6563 6564 6565
 * @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.
 **/
6566
void
6567 6568 6569
lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
			struct lpfc_nodelist *ndlp)
{
6570
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6571 6572 6573 6574
	LPFC_MBOXQ_t *mbox;

	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (mbox) {
6575
		lpfc_reg_vpi(vport, mbox);
6576 6577 6578
		mbox->vport = vport;
		mbox->context2 = lpfc_nlp_get(ndlp);
		mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
6579
		if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
6580
		    == MBX_NOT_FINISHED) {
6581 6582 6583 6584
			/* mailbox command not success, decrement ndlp
			 * reference count for this command
			 */
			lpfc_nlp_put(ndlp);
6585 6586
			mempool_free(mbox, phba->mbox_mem_pool);

6587 6588
			lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				"0253 Register VPI: Can't send mbox\n");
6589
			goto mbox_err_exit;
6590 6591
		}
	} else {
6592 6593
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				 "0254 Register VPI: no memory\n");
6594
		goto mbox_err_exit;
6595
	}
6596 6597 6598 6599 6600 6601 6602 6603
	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;
6604 6605
}

6606
/**
6607
 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
6608 6609
 * @phba: pointer to lpfc hba data structure.
 *
6610
 * This routine cancels the retry delay timers to all the vports.
6611 6612
 **/
void
6613
lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
6614 6615 6616 6617
{
	struct lpfc_vport **vports;
	struct lpfc_nodelist *ndlp;
	uint32_t link_state;
6618
	int i;
6619 6620 6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631 6632 6633 6634 6635

	/* 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);
	}
6636 6637 6638 6639 6640 6641 6642 6643 6644 6645 6646 6647 6648 6649 6650 6651 6652 6653
}

/**
 * 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);
6654 6655 6656 6657 6658 6659 6660 6661 6662 6663 6664 6665 6666 6667 6668 6669 6670 6671 6672 6673 6674 6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687 6688 6689 6690 6691

	/* 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;
}

6692
/**
6693
 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711
 * @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).
 **/
6712 6713 6714 6715 6716 6717 6718 6719 6720 6721 6722 6723
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;

6724 6725 6726 6727
	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);
6728 6729 6730 6731 6732 6733 6734 6735
	/* 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
6736 6737 6738 6739
	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);

6740
	if (irsp->ulpStatus) {
6741 6742 6743 6744 6745 6746

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

6747 6748 6749 6750
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
			goto out;
		/* FDISC failed */
6751
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6752
				 "0126 FDISC failed. (%d/%d)\n",
6753
				 irsp->ulpStatus, irsp->un.ulpWord[4]);
6754 6755 6756
		goto fdisc_failed;
	}
	spin_lock_irq(shost->host_lock);
6757
	vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
J
James Smart 已提交
6758
	vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
6759 6760 6761 6762
	vport->fc_flag |= FC_FABRIC;
	if (vport->phba->fc_topology == TOPOLOGY_LOOP)
		vport->fc_flag |=  FC_PUBLIC_LOOP;
	spin_unlock_irq(shost->host_lock);
6763

6764 6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775 6776 6777
	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;
6778
			spin_lock_irq(shost->host_lock);
6779
			np->nlp_flag &= ~NLP_NPR_ADISC;
6780
			spin_unlock_irq(shost->host_lock);
6781
			lpfc_unreg_rpi(vport, np);
6782
		}
6783
		lpfc_cleanup_pending_mbox(vport);
6784 6785 6786
		lpfc_mbx_unreg_vpi(vport);
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6787 6788
		if (phba->sli_rev == LPFC_SLI_REV4)
			vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
J
James Smart 已提交
6789 6790
		else
			vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
6791
		spin_unlock_irq(shost->host_lock);
6792 6793 6794 6795 6796 6797 6798
	} else if ((phba->sli_rev == LPFC_SLI_REV4) &&
		!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
		/*
		 * Driver needs to re-reg VPI in order for f/w
		 * to update the MAC address.
		 */
		lpfc_register_new_vport(phba, vport, ndlp);
6799
		goto out;
6800 6801
	}

6802 6803 6804
	if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
		lpfc_issue_init_vpi(vport);
	else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
6805 6806 6807 6808 6809 6810 6811 6812 6813
		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);
6814 6815 6816 6817
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

6818
/**
6819
 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
6820 6821 6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832 6833 6834 6835 6836 6837
 * @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
6838
static int
6839 6840 6841 6842 6843 6844 6845 6846 6847 6848 6849 6850
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;

6851
	vport->port_state = LPFC_FDISC;
6852 6853 6854 6855 6856
	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);
6857 6858
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0255 Issue FDISC: no IOCB\n");
6859 6860 6861 6862 6863 6864 6865
		return 1;
	}

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

6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876
	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;
	}
6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903

	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
6904 6905 6906 6907
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FDISC:     did:x%x",
		did, 0, 0);

6908 6909 6910 6911
	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);
6912 6913
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0256 Issue FDISC: Cannot send IOCB\n");
6914 6915 6916 6917 6918 6919
		return 1;
	}
	lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
	return 0;
}

6920
/**
6921
 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
6922 6923 6924 6925 6926 6927 6928 6929 6930 6931 6932 6933
 * @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.
 **/
6934 6935 6936 6937 6938
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
6939
	IOCB_t *irsp;
6940 6941
	struct lpfc_nodelist *ndlp;
	ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
J
James Smart 已提交
6942 6943 6944 6945 6946

	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);
6947 6948 6949

	lpfc_els_free_iocb(phba, cmdiocb);
	vport->unreg_vpi_cmpl = VPORT_ERROR;
6950 6951 6952

	/* Trigger the release of the ndlp after logo */
	lpfc_nlp_put(ndlp);
6953 6954
}

6955
/**
6956
 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
6957 6958 6959 6960 6961 6962 6963 6964 6965 6966 6967 6968 6969 6970
 * @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
 **/
6971 6972 6973 6974 6975 6976 6977 6978 6979 6980 6981 6982 6983 6984 6985 6986 6987 6988 6989 6990 6991 6992 6993 6994 6995 6996
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
6997 6998 6999 7000
	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);

7001 7002 7003 7004
	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);
7005 7006
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
7007 7008 7009 7010 7011 7012 7013 7014 7015
		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;
}

7016
/**
7017
 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
7018 7019 7020 7021 7022 7023 7024 7025 7026
 * @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.
 **/
7027 7028 7029 7030 7031 7032
void
lpfc_fabric_block_timeout(unsigned long ptr)
{
	struct lpfc_hba  *phba = (struct lpfc_hba *) ptr;
	unsigned long iflags;
	uint32_t tmo_posted;
7033

7034 7035 7036 7037 7038 7039
	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);

7040 7041 7042
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
	return;
7043 7044
}

7045
/**
7046
 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
7047 7048 7049 7050 7051 7052 7053 7054
 * @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.
 **/
7055 7056 7057 7058 7059 7060 7061 7062 7063 7064 7065
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);
7066
	/* Post any pending iocb to the SLI layer */
7067 7068 7069 7070
	if (atomic_read(&phba->fabric_iocb_count) == 0) {
		list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
				 list);
		if (iocb)
7071
			/* Increment fabric iocb count to hold the position */
7072 7073 7074 7075 7076 7077 7078 7079
			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
7080 7081 7082 7083
		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched1:   ste:x%x",
			iocb->vport->port_state, 0, 0);

7084
		ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
7085 7086 7087 7088 7089 7090 7091 7092 7093 7094 7095 7096 7097 7098 7099 7100 7101 7102

		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;
}

7103
/**
7104
 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
7105 7106 7107 7108 7109 7110 7111
 * @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.
 **/
7112 7113 7114 7115 7116 7117 7118 7119 7120
void
lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
{
	clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);

	lpfc_resume_fabric_iocbs(phba);
	return;
}

7121
/**
7122
 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
7123 7124 7125 7126 7127 7128 7129
 * @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.
 **/
7130 7131 7132 7133 7134 7135
static void
lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
{
	int blocked;

	blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
7136
	/* Start a timer to unblock fabric iocbs after 100ms */
7137 7138 7139 7140 7141 7142
	if (!blocked)
		mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );

	return;
}

7143
/**
7144
 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
7145 7146 7147 7148 7149 7150 7151 7152 7153 7154 7155
 * @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.
 **/
7156 7157 7158 7159 7160 7161 7162 7163 7164 7165 7166 7167 7168 7169
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);
7170
			}
7171 7172 7173 7174 7175 7176 7177 7178 7179 7180 7181 7182 7183 7184 7185 7186 7187 7188 7189 7190 7191 7192 7193 7194 7195 7196
			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)) {
7197 7198
		/* Post any pending iocbs to HBA */
		lpfc_resume_fabric_iocbs(phba);
7199 7200 7201
	}
}

7202
/**
7203
 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
7204 7205 7206 7207 7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220 7221 7222 7223 7224 7225
 * @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
 **/
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Adrian Bunk 已提交
7226
static int
7227 7228 7229 7230 7231 7232 7233 7234 7235 7236 7237 7238 7239
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);

7240 7241 7242
	if (ready)
		/* Increment fabric iocb count to hold the position */
		atomic_inc(&phba->fabric_iocb_count);
7243 7244 7245 7246 7247 7248
	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
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		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched2:   ste:x%x",
			iocb->vport->port_state, 0, 0);

7253
		ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
7254 7255 7256 7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268 7269

		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;
}

7270
/**
7271
 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
7272 7273 7274 7275 7276 7277 7278 7279 7280
 * @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
7281
static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
7282 7283 7284 7285 7286 7287 7288 7289 7290 7291 7292 7293 7294 7295 7296 7297
{
	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);

7298 7299 7300
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
7301 7302
}

7303
/**
7304
 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
7305 7306 7307 7308 7309 7310 7311 7312 7313
 * @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.
 **/
7314 7315 7316
void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
{
	LIST_HEAD(completions);
7317
	struct lpfc_hba  *phba = ndlp->phba;
7318 7319 7320 7321 7322 7323 7324 7325 7326
	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);
7327
		}
已提交
7328
	}
7329 7330
	spin_unlock_irq(&phba->hbalock);

7331 7332 7333
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
7334 7335
}

7336
/**
7337
 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
7338 7339 7340 7341 7342 7343 7344 7345 7346
 * @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.
 **/
7347 7348 7349 7350 7351 7352 7353 7354
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);

7355 7356 7357
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
已提交
7358
}
7359 7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370 7371 7372 7373 7374

/**
 * 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;
7375
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
7376

7377 7378
	spin_lock_irqsave(&phba->hbalock, iflag);
	spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
7379 7380 7381 7382 7383 7384
	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);
7385 7386
			sglq_entry->state = SGL_FREED;
			spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
7387
			spin_unlock_irqrestore(&phba->hbalock, iflag);
7388 7389 7390 7391

			/* Check if TXQ queue needs to be serviced */
			if (pring->txq_cnt)
				lpfc_worker_wake_up(phba);
7392 7393 7394
			return;
		}
	}
7395 7396 7397 7398 7399 7400 7401 7402 7403
	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;
7404
}