lpfc_els.c 221.5 KB
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/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
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 * Fibre Channel Host Bus Adapters.                                *
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 * Copyright (C) 2004-2009 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
515 516 517 518 519 520 521 522

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

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

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

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

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

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

572 573 574 575 576
		/* If our NportID changed, we need to ensure all
		 * remaining NPORTs get unreg_login'ed.
		 */
		list_for_each_entry_safe(np, next_np,
					&vport->fc_nodes, nlp_listp) {
577
			if (!NLP_CHK_NODE_ACT(np))
578
				continue;
579 580 581 582 583 584 585 586
			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);
		}
587
		lpfc_cleanup_pending_mbox(vport);
588 589
		if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
			lpfc_mbx_unreg_vpi(vport);
590
			spin_lock_irq(shost->host_lock);
591
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
592
			spin_unlock_irq(shost->host_lock);
593
		}
594 595 596 597 598 599 600 601 602
		/*
		 * 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);
		}
603
	}
已提交
604

605 606 607 608 609 610 611 612 613 614
	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);
615 616
		if ((!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) &&
			(vport->vpi_state & LPFC_VPI_REGISTERED)) {
617 618
			lpfc_start_fdiscs(phba);
			lpfc_do_scr_ns_plogi(phba, vport);
619
		} else if (vport->fc_flag & FC_VFI_REGISTERED)
620
			lpfc_issue_init_vpi(vport);
621
		else
622
			lpfc_issue_reg_vfi(vport);
623
	}
已提交
624 625
	return 0;
}
626
/**
627
 * lpfc_cmpl_els_flogi_nport - Completion function for flogi to an N_Port
628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645
 * @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
646
static int
J
James Smart 已提交
647 648
lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
			  struct serv_parm *sp)
已提交
649
{
J
James Smart 已提交
650 651
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
652 653 654
	LPFC_MBOXQ_t *mbox;
	int rc;

J
James Smart 已提交
655 656 657
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
	spin_unlock_irq(shost->host_lock);
已提交
658 659 660

	phba->fc_edtov = FF_DEF_EDTOV;
	phba->fc_ratov = FF_DEF_RATOV;
J
James Smart 已提交
661
	rc = memcmp(&vport->fc_portname, &sp->portName,
662
		    sizeof(vport->fc_portname));
已提交
663 664
	if (rc >= 0) {
		/* This side will initiate the PLOGI */
J
James Smart 已提交
665 666 667
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PT2PT_PLOGI;
		spin_unlock_irq(shost->host_lock);
已提交
668 669 670 671 672 673 674 675

		/*
		 * 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
676
			vport->fc_myDID = PT2PT_LocalID;
已提交
677 678 679 680 681 682 683 684

		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;
685
		mbox->vport = vport;
686
		rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
已提交
687 688 689 690
		if (rc == MBX_NOT_FINISHED) {
			mempool_free(mbox, phba->mbox_mem_pool);
			goto fail;
		}
691 692 693
		/* Decrement ndlp reference count indicating that ndlp can be
		 * safely released when other references to it are done.
		 */
694
		lpfc_nlp_put(ndlp);
已提交
695

J
James Smart 已提交
696
		ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
已提交
697 698 699 700 701 702 703 704
		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
705
			lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
706 707 708 709 710
		} else if (!NLP_CHK_NODE_ACT(ndlp)) {
			ndlp = lpfc_enable_node(vport, ndlp,
						NLP_STE_UNUSED_NODE);
			if(!ndlp)
				goto fail;
已提交
711 712 713
		}

		memcpy(&ndlp->nlp_portname, &sp->portName,
J
James Smart 已提交
714
		       sizeof(struct lpfc_name));
已提交
715
		memcpy(&ndlp->nlp_nodename, &sp->nodeName,
J
James Smart 已提交
716
		       sizeof(struct lpfc_name));
717
		/* Set state will put ndlp onto node list if not already done */
J
James Smart 已提交
718 719
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
		spin_lock_irq(shost->host_lock);
已提交
720
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
721
		spin_unlock_irq(shost->host_lock);
722 723 724 725 726
	} 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.
		 */
727
		lpfc_nlp_put(ndlp);
已提交
728

729 730 731
	/* If we are pt2pt with another NPort, force NPIV off! */
	phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;

J
James Smart 已提交
732 733 734
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_PT2PT;
	spin_unlock_irq(shost->host_lock);
已提交
735 736

	/* Start discovery - this should just do CLEAR_LA */
J
James Smart 已提交
737
	lpfc_disc_start(vport);
已提交
738
	return 0;
739
fail:
已提交
740 741 742
	return -ENXIO;
}

743
/**
744
 * lpfc_cmpl_els_flogi - Completion callback function for flogi
745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765
 * @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
766
static void
767 768
lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
769
{
J
James Smart 已提交
770 771
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
772 773 774 775
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_nodelist *ndlp = cmdiocb->context1;
	struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
	struct serv_parm *sp;
776
	uint16_t fcf_index;
已提交
777 778 779
	int rc;

	/* Check to see if link went down during discovery */
J
James Smart 已提交
780
	if (lpfc_els_chk_latt(vport)) {
781 782 783
		/* One additional decrement on node reference count to
		 * trigger the release of the node
		 */
784
		lpfc_nlp_put(ndlp);
已提交
785 786 787
		goto out;
	}

J
James Smart 已提交
788 789 790 791 792
	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
793
	if (irsp->ulpStatus) {
794 795 796 797 798
		/*
		 * In case of FIP mode, perform round robin FCF failover
		 * due to new FCF discovery
		 */
		if ((phba->hba_flag & HBA_FIP_SUPPORT) &&
799 800 801
		    (phba->fcf.fcf_flag & FCF_DISCOVERY) &&
		    (irsp->ulpStatus != IOSTAT_LOCAL_REJECT) &&
		    (irsp->un.ulpWord[4] != IOERR_SLI_ABORTED)) {
802 803 804 805 806 807 808 809 810 811 812 813 814 815
			lpfc_printf_log(phba, KERN_WARNING, LOG_FIP | LOG_ELS,
					"2611 FLOGI failed on registered "
					"FCF record fcf_index:%d, trying "
					"to perform round robin failover\n",
					phba->fcf.current_rec.fcf_indx);
			fcf_index = lpfc_sli4_fcf_rr_next_index_get(phba);
			if (fcf_index == LPFC_FCOE_FCF_NEXT_NONE) {
				/*
				 * Exhausted the eligible FCF record list,
				 * fail through to retry FLOGI on current
				 * FCF record.
				 */
				lpfc_printf_log(phba, KERN_WARNING,
						LOG_FIP | LOG_ELS,
816 817 818 819 820
						"2760 Completed one round "
						"of FLOGI FCF round robin "
						"failover list, retry FLOGI "
						"on currently registered "
						"FCF index:%d\n",
821 822
						phba->fcf.current_rec.fcf_indx);
			} else {
823 824 825 826 827
				lpfc_printf_log(phba, KERN_INFO,
						LOG_FIP | LOG_ELS,
						"2794 FLOGI FCF round robin "
						"failover to FCF index x%x\n",
						fcf_index);
828 829
				rc = lpfc_sli4_fcf_rr_read_fcf_rec(phba,
								   fcf_index);
830
				if (rc)
831 832 833 834 835 836 837 838
					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);
839
				else
840 841 842 843
					goto out;
			}
		}

已提交
844
		/* Check for retry */
J
James Smart 已提交
845
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
846
			goto out;
J
James Smart 已提交
847

已提交
848
		/* FLOGI failed, so there is no fabric */
J
James Smart 已提交
849 850 851
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
		spin_unlock_irq(shost->host_lock);
已提交
852

853
		/* If private loop, then allow max outstanding els to be
已提交
854 855 856 857
		 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
		 * alpa map would take too long otherwise.
		 */
		if (phba->alpa_map[0] == 0) {
858
			vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
已提交
859 860 861
		}

		/* FLOGI failure */
862 863
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0100 FLOGI failure Status:x%x/x%x TMO:x%x\n",
864 865
				 irsp->ulpStatus, irsp->un.ulpWord[4],
				 irsp->ulpTimeout);
已提交
866 867
		goto flogifail;
	}
868 869
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
J
James Smart 已提交
870
	vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
871
	spin_unlock_irq(shost->host_lock);
已提交
872 873 874 875 876 877 878 879 880 881

	/*
	 * 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 */
882
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
883
			 "0101 FLOGI completes successfully "
884 885 886
			 "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
887

J
James Smart 已提交
888
	if (vport->port_state == LPFC_FLOGI) {
已提交
889 890 891 892 893
		/*
		 * 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
894
			rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
895
		else if (!(phba->hba_flag & HBA_FCOE_SUPPORT))
J
James Smart 已提交
896
			rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927
		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;
		}
928 929
		if (!rc) {
			/* Mark the FCF discovery process done */
930 931 932 933 934 935 936 937
			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);
938 939 940
			spin_lock_irq(&phba->hbalock);
			phba->fcf.fcf_flag &= ~FCF_DISCOVERY;
			spin_unlock_irq(&phba->hbalock);
已提交
941
			goto out;
942
		}
已提交
943 944 945
	}

flogifail:
946
	lpfc_nlp_put(ndlp);
已提交
947

J
James Smart 已提交
948
	if (!lpfc_error_lost_link(irsp)) {
已提交
949
		/* FLOGI failed, so just use loop map to make discovery list */
J
James Smart 已提交
950
		lpfc_disc_list_loopmap(vport);
已提交
951 952

		/* Start discovery */
J
James Smart 已提交
953
		lpfc_disc_start(vport);
954 955 956 957 958 959
	} 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
960 961 962 963 964
	}
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

965
/**
966
 * lpfc_issue_els_flogi - Issue an flogi iocb command for a vport
967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986
 * @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
987
static int
J
James Smart 已提交
988
lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
989 990
		     uint8_t retry)
{
J
James Smart 已提交
991
	struct lpfc_hba  *phba = vport->phba;
已提交
992 993 994 995 996 997 998 999 1000 1001 1002
	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];

1003
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
J
James Smart 已提交
1004 1005
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_FLOGI);
1006

1007
	if (!elsiocb)
1008
		return 1;
已提交
1009 1010 1011 1012 1013 1014

	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;
1015 1016
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029
	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;

1030 1031 1032 1033 1034 1035 1036
	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) {
1037 1038 1039 1040 1041 1042
		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
1043 1044 1045 1046 1047
	if (phba->fc_topology != TOPOLOGY_LOOP) {
		icmd->un.elsreq64.myID = 0;
		icmd->un.elsreq64.fl = 1;
	}

已提交
1048 1049
	tmo = phba->fc_ratov;
	phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
J
James Smart 已提交
1050
	lpfc_set_disctmo(vport);
已提交
1051 1052 1053 1054
	phba->fc_ratov = tmo;

	phba->fc_stat.elsXmitFLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
J
James Smart 已提交
1055 1056 1057 1058 1059

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

1060
	rc = lpfc_issue_fabric_iocb(phba, elsiocb);
已提交
1061 1062
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
1063
		return 1;
已提交
1064
	}
1065
	return 0;
已提交
1066 1067
}

1068
/**
1069
 * lpfc_els_abort_flogi - Abort all outstanding flogi iocbs
1070 1071 1072 1073 1074 1075 1076 1077 1078 1079
 * @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
1080
 *   0 - Successfully issued abort iocb on all outstanding flogis (Always 0)
1081
 **/
已提交
1082
int
J
James Smart 已提交
1083
lpfc_els_abort_flogi(struct lpfc_hba *phba)
已提交
1084 1085 1086 1087 1088 1089 1090 1091
{
	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,
1092 1093
			"0201 Abort outstanding I/O on NPort x%x\n",
			Fabric_DID);
已提交
1094 1095 1096 1097 1098 1099 1100

	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
1101
	spin_lock_irq(&phba->hbalock);
已提交
1102 1103
	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
		icmd = &iocb->iocb;
J
James Smart 已提交
1104 1105
		if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
		    icmd->un.elsreq64.bdl.ulpIoTag32) {
已提交
1106
			ndlp = (struct lpfc_nodelist *)(iocb->context1);
1107 1108
			if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
			    (ndlp->nlp_DID == Fabric_DID))
1109
				lpfc_sli_issue_abort_iotag(phba, pring, iocb);
已提交
1110 1111
		}
	}
J
James Smart 已提交
1112
	spin_unlock_irq(&phba->hbalock);
已提交
1113 1114 1115 1116

	return 0;
}

1117
/**
1118
 * lpfc_initial_flogi - Issue an initial fabric login for a vport
1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132
 * @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
1133
int
J
James Smart 已提交
1134
lpfc_initial_flogi(struct lpfc_vport *vport)
已提交
1135
{
J
James Smart 已提交
1136
	struct lpfc_hba *phba = vport->phba;
已提交
1137 1138
	struct lpfc_nodelist *ndlp;

1139 1140 1141
	vport->port_state = LPFC_FLOGI;
	lpfc_set_disctmo(vport);

1142
	/* First look for the Fabric ndlp */
J
James Smart 已提交
1143
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
1144
	if (!ndlp) {
已提交
1145
		/* Cannot find existing Fabric ndlp, so allocate a new one */
1146 1147 1148
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 0;
J
James Smart 已提交
1149
		lpfc_nlp_init(vport, ndlp, Fabric_DID);
1150 1151
		/* Set the node type */
		ndlp->nlp_type |= NLP_FABRIC;
1152 1153 1154 1155 1156 1157 1158
		/* 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
1159
	}
1160

1161
	if (lpfc_issue_els_flogi(vport, ndlp, 0))
1162 1163 1164
		/* This decrement of reference count to node shall kick off
		 * the release of the node.
		 */
1165
		lpfc_nlp_put(ndlp);
1166

1167
	return 1;
已提交
1168 1169
}

1170
/**
1171
 * lpfc_initial_fdisc - Issue an initial fabric discovery for a vport
1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185
 * @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
 **/
1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199
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);
1200 1201 1202 1203 1204 1205 1206
		/* 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;
1207
	}
1208

1209
	if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
1210 1211 1212
		/* decrement node reference count to trigger the release of
		 * the node.
		 */
1213
		lpfc_nlp_put(ndlp);
1214
		return 0;
1215 1216 1217
	}
	return 1;
}
1218

1219
/**
1220
 * lpfc_more_plogi - Check and issue remaining plogis for a vport
1221 1222 1223 1224 1225 1226 1227 1228 1229
 * @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.
 **/
1230
void
J
James Smart 已提交
1231
lpfc_more_plogi(struct lpfc_vport *vport)
已提交
1232 1233 1234
{
	int sentplogi;

J
James Smart 已提交
1235 1236
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1237 1238

	/* Continue discovery with <num_disc_nodes> PLOGIs to go */
1239 1240 1241 1242 1243
	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
1244
	/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1245 1246 1247 1248
	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
1249 1250 1251
	return;
}

1252
/**
1253
 * lpfc_plogi_confirm_nport - Confirm pologi wwpn matches stored ndlp
1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282
 * @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
 **/
1283
static struct lpfc_nodelist *
1284
lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1285 1286
			 struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
1287
	struct lpfc_vport    *vport = ndlp->vport;
1288
	struct lpfc_nodelist *new_ndlp;
1289 1290
	struct lpfc_rport_data *rdata;
	struct fc_rport *rport;
1291
	struct serv_parm *sp;
1292
	uint8_t  name[sizeof(struct lpfc_name)];
1293
	uint32_t rc, keepDID = 0;
1294

J
James Smart 已提交
1295 1296 1297 1298 1299 1300
	/* 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;

1301
	sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1302
	memset(name, 0, sizeof(struct lpfc_name));
1303

1304
	/* Now we find out if the NPort we are logging into, matches the WWPN
1305 1306
	 * we have for that ndlp. If not, we have some work to do.
	 */
J
James Smart 已提交
1307
	new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1308

1309
	if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1310 1311 1312
		return ndlp;

	if (!new_ndlp) {
J
James Smart 已提交
1313 1314
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
1315 1316
		if (!rc)
			return ndlp;
1317 1318 1319
		new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
		if (!new_ndlp)
			return ndlp;
J
James Smart 已提交
1320
		lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1321
	} else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1322 1323 1324 1325
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
		if (!rc)
			return ndlp;
1326 1327 1328 1329
		new_ndlp = lpfc_enable_node(vport, new_ndlp,
						NLP_STE_UNUSED_NODE);
		if (!new_ndlp)
			return ndlp;
1330 1331 1332
		keepDID = new_ndlp->nlp_DID;
	} else
		keepDID = new_ndlp->nlp_DID;
1333

J
James Smart 已提交
1334
	lpfc_unreg_rpi(vport, new_ndlp);
1335
	new_ndlp->nlp_DID = ndlp->nlp_DID;
1336
	new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1337 1338 1339 1340 1341

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

1342
	/* Set state will put new_ndlp on to node list if not already done */
J
James Smart 已提交
1343
	lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1344

J
James Smart 已提交
1345
	/* Move this back to NPR state */
1346 1347 1348 1349
	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.
		 */
1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362

		/* 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;
		}
1363 1364 1365 1366 1367 1368 1369 1370 1371
		/* 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);
		}
1372

1373 1374
		/* Two ndlps cannot have the same did on the nodelist */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1375
		lpfc_drop_node(vport, ndlp);
1376
	}
1377
	else {
J
James Smart 已提交
1378
		lpfc_unreg_rpi(vport, ndlp);
1379 1380
		/* Two ndlps cannot have the same did */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1381
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1382
	}
1383 1384 1385
	return new_ndlp;
}

1386
/**
1387
 * lpfc_end_rscn - Check and handle more rscn for a vport
1388 1389 1390 1391 1392 1393 1394 1395 1396
 * @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.
 **/
1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417
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);
		}
	}
}

1418
/**
1419
 * lpfc_cmpl_els_plogi - Completion callback function for plogi
1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437
 * @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
1438
static void
J
James Smart 已提交
1439 1440
lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1441
{
J
James Smart 已提交
1442 1443
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1444 1445
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
1446
	struct lpfc_dmabuf *prsp;
已提交
1447 1448 1449 1450 1451 1452
	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
1453 1454 1455 1456 1457
	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
1458
	ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1459
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1460 1461 1462 1463 1464 1465
		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);
1466
		goto out;
1467
	}
已提交
1468 1469 1470 1471

	/* 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
1472
	spin_lock_irq(shost->host_lock);
已提交
1473
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1474
	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
1475
	spin_unlock_irq(shost->host_lock);
已提交
1476 1477 1478
	rc   = 0;

	/* PLOGI completes to NPort <nlp_DID> */
1479 1480 1481 1482 1483
	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
1484
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1485 1486
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1487
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1488
		spin_unlock_irq(shost->host_lock);
已提交
1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500
		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
1501
				spin_lock_irq(shost->host_lock);
已提交
1502
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1503
				spin_unlock_irq(shost->host_lock);
已提交
1504 1505 1506
			}
			goto out;
		}
1507 1508 1509 1510 1511 1512
		/* 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,
1513 1514 1515
				 "2753 PLOGI failure DID:%06X Status:x%x/x%x\n",
				 ndlp->nlp_DID, irsp->ulpStatus,
				 irsp->un.ulpWord[4]);
已提交
1516
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1517
		if (lpfc_error_lost_link(irsp))
1518
			rc = NLP_STE_FREED_NODE;
1519
		else
J
James Smart 已提交
1520
			rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1521
						     NLP_EVT_CMPL_PLOGI);
已提交
1522 1523
	} else {
		/* Good status, call state machine */
1524
		prsp = list_entry(((struct lpfc_dmabuf *)
1525 1526 1527
				   cmdiocb->context2)->list.next,
				  struct lpfc_dmabuf, list);
		ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
J
James Smart 已提交
1528
		rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1529
					     NLP_EVT_CMPL_PLOGI);
已提交
1530 1531
	}

J
James Smart 已提交
1532
	if (disc && vport->num_disc_nodes) {
已提交
1533
		/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1534
		lpfc_more_plogi(vport);
已提交
1535

J
James Smart 已提交
1536 1537 1538 1539
		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
1540

J
James Smart 已提交
1541
			lpfc_can_disctmo(vport);
1542
			lpfc_end_rscn(vport);
已提交
1543 1544 1545 1546 1547 1548 1549 1550
		}
	}

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

1551
/**
1552
 * lpfc_issue_els_plogi - Issue an plogi iocb command for a vport
1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571
 * @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
1572
int
J
James Smart 已提交
1573
lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
已提交
1574
{
J
James Smart 已提交
1575
	struct lpfc_hba  *phba = vport->phba;
已提交
1576 1577
	struct serv_parm *sp;
	IOCB_t *icmd;
1578
	struct lpfc_nodelist *ndlp;
已提交
1579 1580 1581 1582
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
1583
	int ret;
已提交
1584 1585 1586

	psli = &phba->sli;

1587
	ndlp = lpfc_findnode_did(vport, did);
1588 1589
	if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
		ndlp = NULL;
1590

1591
	/* If ndlp is not NULL, we will bump the reference count on it */
1592
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1593
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
J
James Smart 已提交
1594
				     ELS_CMD_PLOGI);
1595 1596
	if (!elsiocb)
		return 1;
已提交
1597 1598 1599 1600 1601 1602

	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;
1603 1604
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
1605 1606 1607 1608 1609 1610 1611 1612
	sp = (struct serv_parm *) pcmd;

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

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

J
James Smart 已提交
1613 1614 1615 1616
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PLOGI:     did:x%x",
		did, 0, 0);

已提交
1617 1618
	phba->fc_stat.elsXmitPLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1619
	ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
1620 1621

	if (ret == IOCB_ERROR) {
已提交
1622
		lpfc_els_free_iocb(phba, elsiocb);
1623
		return 1;
已提交
1624
	}
1625
	return 0;
已提交
1626 1627
}

1628
/**
1629
 * lpfc_cmpl_els_prli - Completion callback function for prli
1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640
 * @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
1641
static void
J
James Smart 已提交
1642 1643
lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
1644
{
J
James Smart 已提交
1645 1646
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1647 1648 1649 1650 1651 1652 1653 1654 1655 1656
	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
1657
	spin_lock_irq(shost->host_lock);
已提交
1658
	ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1659
	spin_unlock_irq(shost->host_lock);
已提交
1660

J
James Smart 已提交
1661 1662 1663 1664
	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
1665
	/* PRLI completes to NPort <nlp_DID> */
1666 1667 1668 1669 1670
	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
1671

J
James Smart 已提交
1672
	vport->fc_prli_sent--;
已提交
1673
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1674
	if (lpfc_els_chk_latt(vport))
已提交
1675 1676 1677 1678 1679 1680 1681 1682 1683
		goto out;

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			goto out;
		}
		/* PRLI failed */
1684 1685 1686 1687
		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
1688
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1689
		if (lpfc_error_lost_link(irsp))
已提交
1690
			goto out;
1691
		else
J
James Smart 已提交
1692
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1693
						NLP_EVT_CMPL_PRLI);
1694
	} else
已提交
1695
		/* Good status, call state machine */
J
James Smart 已提交
1696
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1697
					NLP_EVT_CMPL_PRLI);
已提交
1698 1699 1700 1701 1702
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1703
/**
1704
 * lpfc_issue_els_prli - Issue a prli iocb command for a vport
1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723
 * @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
1724
int
J
James Smart 已提交
1725
lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1726 1727
		    uint8_t retry)
{
J
James Smart 已提交
1728 1729
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba *phba = vport->phba;
已提交
1730 1731 1732 1733 1734 1735
	PRLI *npr;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

1736
	cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
J
James Smart 已提交
1737 1738
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_PRLI);
1739
	if (!elsiocb)
1740
		return 1;
已提交
1741 1742 1743 1744 1745

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

	/* For PRLI request, remainder of payload is service parameters */
1746
	memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
已提交
1747
	*((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
1748
	pcmd += sizeof(uint32_t);
已提交
1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767

	/* 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
1768 1769 1770 1771
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PRLI:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
1772 1773
	phba->fc_stat.elsXmitPRLI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
J
James Smart 已提交
1774
	spin_lock_irq(shost->host_lock);
已提交
1775
	ndlp->nlp_flag |= NLP_PRLI_SND;
J
James Smart 已提交
1776
	spin_unlock_irq(shost->host_lock);
1777 1778
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
J
James Smart 已提交
1779
		spin_lock_irq(shost->host_lock);
已提交
1780
		ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1781
		spin_unlock_irq(shost->host_lock);
已提交
1782
		lpfc_els_free_iocb(phba, elsiocb);
1783
		return 1;
已提交
1784
	}
J
James Smart 已提交
1785
	vport->fc_prli_sent++;
1786
	return 0;
已提交
1787 1788
}

1789
/**
1790
 * lpfc_rscn_disc - Perform rscn discovery for a vport
1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815
 * @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);
}

/**
1816
 * lpfc_adisc_done - Complete the adisc phase of discovery
1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835
 * @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) &&
1836 1837
	    !(vport->fc_flag & FC_RSCN_MODE) &&
	    (phba->sli_rev < LPFC_SLI_REV4)) {
1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866
		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);
}

1867
/**
1868
 * lpfc_more_adisc - Issue more adisc as needed
1869 1870 1871 1872 1873 1874 1875
 * @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.
 **/
1876
void
J
James Smart 已提交
1877
lpfc_more_adisc(struct lpfc_vport *vport)
已提交
1878 1879 1880
{
	int sentadisc;

J
James Smart 已提交
1881 1882
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1883
	/* Continue discovery with <num_disc_nodes> ADISCs to go */
1884 1885 1886 1887 1888
	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
1889
	/* Check to see if there are more ADISCs to be sent */
J
James Smart 已提交
1890 1891 1892 1893
	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
1894
	}
1895 1896
	if (!vport->num_disc_nodes)
		lpfc_adisc_done(vport);
已提交
1897 1898 1899
	return;
}

1900
/**
1901
 * lpfc_cmpl_els_adisc - Completion callback function for adisc
1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915
 * @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
1916
static void
J
James Smart 已提交
1917 1918
lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1919
{
J
James Smart 已提交
1920 1921
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1922 1923
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
1924
	int  disc;
已提交
1925 1926 1927 1928 1929 1930 1931

	/* 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
1932 1933 1934 1935 1936
	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
1937 1938 1939
	/* 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
1940
	spin_lock_irq(shost->host_lock);
已提交
1941
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1942
	ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
J
James Smart 已提交
1943
	spin_unlock_irq(shost->host_lock);
已提交
1944
	/* ADISC completes to NPort <nlp_DID> */
1945 1946 1947 1948 1949
	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
1950
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1951 1952
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1953
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1954
		spin_unlock_irq(shost->host_lock);
已提交
1955 1956 1957 1958 1959 1960 1961 1962
		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
1963
				spin_lock_irq(shost->host_lock);
已提交
1964
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1965 1966
				spin_unlock_irq(shost->host_lock);
				lpfc_set_disctmo(vport);
已提交
1967 1968 1969 1970
			}
			goto out;
		}
		/* ADISC failed */
1971 1972 1973 1974
		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
1975
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1976
		if (!lpfc_error_lost_link(irsp))
J
James Smart 已提交
1977
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
J
James Smart 已提交
1978
						NLP_EVT_CMPL_ADISC);
1979
	} else
已提交
1980
		/* Good status, call state machine */
J
James Smart 已提交
1981
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
已提交
1982 1983
					NLP_EVT_CMPL_ADISC);

1984 1985
	/* Check to see if there are more ADISCs to be sent */
	if (disc && vport->num_disc_nodes)
J
James Smart 已提交
1986
		lpfc_more_adisc(vport);
已提交
1987 1988 1989 1990 1991
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1992
/**
1993
 * lpfc_issue_els_adisc - Issue an address discover iocb to an node on a vport
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
 * @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
2012
int
J
James Smart 已提交
2013
lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
2014 2015
		     uint8_t retry)
{
J
James Smart 已提交
2016 2017
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
2018 2019 2020 2021 2022 2023
	ADISC *ap;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;

2024
	cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
J
James Smart 已提交
2025 2026
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ADISC);
2027
	if (!elsiocb)
2028
		return 1;
已提交
2029 2030 2031 2032 2033 2034

	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;
2035
	pcmd += sizeof(uint32_t);
已提交
2036 2037 2038 2039

	/* Fill in ADISC payload */
	ap = (ADISC *) pcmd;
	ap->hardAL_PA = phba->fc_pref_ALPA;
2040 2041
	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
2042
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
2043

J
James Smart 已提交
2044 2045 2046 2047
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue ADISC:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2048 2049
	phba->fc_stat.elsXmitADISC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
J
James Smart 已提交
2050
	spin_lock_irq(shost->host_lock);
已提交
2051
	ndlp->nlp_flag |= NLP_ADISC_SND;
J
James Smart 已提交
2052
	spin_unlock_irq(shost->host_lock);
2053 2054
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
J
James Smart 已提交
2055
		spin_lock_irq(shost->host_lock);
已提交
2056
		ndlp->nlp_flag &= ~NLP_ADISC_SND;
J
James Smart 已提交
2057
		spin_unlock_irq(shost->host_lock);
已提交
2058
		lpfc_els_free_iocb(phba, elsiocb);
2059
		return 1;
已提交
2060
	}
2061
	return 0;
已提交
2062 2063
}

2064
/**
2065
 * lpfc_cmpl_els_logo - Completion callback function for logo
2066 2067 2068 2069 2070 2071 2072 2073 2074 2075
 * @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
2076
static void
J
James Smart 已提交
2077 2078
lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
2079
{
J
James Smart 已提交
2080 2081 2082
	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
2083 2084 2085 2086 2087 2088 2089 2090
	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
2091
	spin_lock_irq(shost->host_lock);
已提交
2092
	ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
2093
	spin_unlock_irq(shost->host_lock);
已提交
2094

J
James Smart 已提交
2095 2096 2097 2098
	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
2099
	/* LOGO completes to NPort <nlp_DID> */
2100 2101 2102 2103 2104
	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
2105
	/* Check to see if link went down during discovery */
J
James Smart 已提交
2106
	if (lpfc_els_chk_latt(vport))
已提交
2107 2108
		goto out;

2109 2110 2111 2112 2113 2114 2115 2116 2117
	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
2118 2119
	if (irsp->ulpStatus) {
		/* Check for retry */
J
James Smart 已提交
2120
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
2121 2122 2123
			/* ELS command is being retried */
			goto out;
		/* LOGO failed */
2124 2125 2126 2127
		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
2128
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
J
James Smart 已提交
2129
		if (lpfc_error_lost_link(irsp))
已提交
2130
			goto out;
J
James Smart 已提交
2131
		else
J
James Smart 已提交
2132
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2133
						NLP_EVT_CMPL_LOGO);
2134
	} else
2135 2136 2137
		/* Good status, call state machine.
		 * This will unregister the rpi if needed.
		 */
J
James Smart 已提交
2138
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
2139
					NLP_EVT_CMPL_LOGO);
已提交
2140 2141 2142 2143 2144
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2145
/**
2146
 * lpfc_issue_els_logo - Issue a logo to an node on a vport
2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164
 * @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
2165
int
J
James Smart 已提交
2166
lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
2167 2168
		    uint8_t retry)
{
J
James Smart 已提交
2169 2170
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
2171 2172 2173 2174
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;
2175
	int rc;
已提交
2176

2177 2178 2179 2180 2181 2182 2183
	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);

2184
	cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
J
James Smart 已提交
2185 2186
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LOGO);
2187
	if (!elsiocb)
2188
		return 1;
已提交
2189 2190 2191 2192

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
2193
	pcmd += sizeof(uint32_t);
已提交
2194 2195

	/* Fill in LOGO payload */
J
James Smart 已提交
2196
	*((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
2197 2198
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
已提交
2199

J
James Smart 已提交
2200 2201 2202 2203
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue LOGO:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2204 2205
	phba->fc_stat.elsXmitLOGO++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
J
James Smart 已提交
2206
	spin_lock_irq(shost->host_lock);
已提交
2207
	ndlp->nlp_flag |= NLP_LOGO_SND;
J
James Smart 已提交
2208
	spin_unlock_irq(shost->host_lock);
2209
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
2210 2211

	if (rc == IOCB_ERROR) {
J
James Smart 已提交
2212
		spin_lock_irq(shost->host_lock);
已提交
2213
		ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
2214
		spin_unlock_irq(shost->host_lock);
已提交
2215
		lpfc_els_free_iocb(phba, elsiocb);
2216
		return 1;
已提交
2217
	}
2218
	return 0;
已提交
2219 2220
}

2221
/**
2222
 * lpfc_cmpl_els_cmd - Completion callback function for generic els command
2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236
 * @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
2237
static void
J
James Smart 已提交
2238 2239
lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_iocbq *rspiocb)
已提交
2240
{
J
James Smart 已提交
2241
	struct lpfc_vport *vport = cmdiocb->vport;
已提交
2242 2243 2244 2245
	IOCB_t *irsp;

	irsp = &rspiocb->iocb;

J
James Smart 已提交
2246 2247 2248 2249
	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
2250
	/* ELS cmd tag <ulpIoTag> completes */
2251 2252 2253 2254
	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
2255
	/* Check to see if link went down during discovery */
J
James Smart 已提交
2256
	lpfc_els_chk_latt(vport);
已提交
2257 2258 2259 2260
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2261
/**
2262
 * lpfc_issue_els_scr - Issue a scr to an node on a vport
2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282
 * @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
2283
int
J
James Smart 已提交
2284
lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2285
{
J
James Smart 已提交
2286
	struct lpfc_hba  *phba = vport->phba;
已提交
2287 2288 2289 2290 2291 2292 2293 2294
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
2295
	cmdsize = (sizeof(uint32_t) + sizeof(SCR));
已提交
2296

2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308
	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
2309 2310 2311

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_SCR);
已提交
2312

2313
	if (!elsiocb) {
2314 2315 2316
		/* This will trigger the release of the node just
		 * allocated
		 */
2317
		lpfc_nlp_put(ndlp);
2318
		return 1;
已提交
2319 2320 2321 2322 2323 2324
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2325
	pcmd += sizeof(uint32_t);
已提交
2326 2327

	/* For SCR, remainder of payload is SCR parameter page */
2328
	memset(pcmd, 0, sizeof(SCR));
已提交
2329 2330
	((SCR *) pcmd)->Function = SCR_FUNC_FULL;

J
James Smart 已提交
2331 2332 2333 2334
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue SCR:       did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2335 2336
	phba->fc_stat.elsXmitSCR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2337 2338
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
2339 2340 2341 2342
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the rlease of
		 * the node.
		 */
2343
		lpfc_nlp_put(ndlp);
已提交
2344
		lpfc_els_free_iocb(phba, elsiocb);
2345
		return 1;
已提交
2346
	}
2347 2348 2349
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of node.
	 */
2350
	lpfc_nlp_put(ndlp);
2351
	return 0;
已提交
2352 2353
}

2354
/**
2355
 * lpfc_issue_els_farpr - Issue a farp to an node on a vport
2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375
 * @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
2376
static int
J
James Smart 已提交
2377
lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2378
{
J
James Smart 已提交
2379
	struct lpfc_hba  *phba = vport->phba;
已提交
2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390
	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;
2391
	cmdsize = (sizeof(uint32_t) + sizeof(FARP));
已提交
2392

2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404
	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
2405 2406 2407

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_RNID);
2408
	if (!elsiocb) {
2409 2410 2411
		/* This will trigger the release of the node just
		 * allocated
		 */
2412
		lpfc_nlp_put(ndlp);
2413
		return 1;
已提交
2414 2415 2416 2417 2418 2419
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2420
	pcmd += sizeof(uint32_t);
已提交
2421 2422 2423

	/* Fill in FARPR payload */
	fp = (FARP *) (pcmd);
2424
	memset(fp, 0, sizeof(FARP));
已提交
2425 2426
	lp = (uint32_t *) pcmd;
	*lp++ = be32_to_cpu(nportid);
J
James Smart 已提交
2427
	*lp++ = be32_to_cpu(vport->fc_myDID);
已提交
2428 2429 2430
	fp->Rflags = 0;
	fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);

2431 2432
	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
2433
	ondlp = lpfc_findnode_did(vport, nportid);
2434
	if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
已提交
2435
		memcpy(&fp->OportName, &ondlp->nlp_portname,
2436
		       sizeof(struct lpfc_name));
已提交
2437
		memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2438
		       sizeof(struct lpfc_name));
已提交
2439 2440
	}

J
James Smart 已提交
2441 2442 2443 2444
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FARPR:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2445 2446
	phba->fc_stat.elsXmitFARPR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
2447 2448
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
2449 2450 2451 2452
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the release of
		 * the node.
		 */
2453
		lpfc_nlp_put(ndlp);
已提交
2454
		lpfc_els_free_iocb(phba, elsiocb);
2455
		return 1;
已提交
2456
	}
2457 2458 2459
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of the node.
	 */
2460
	lpfc_nlp_put(ndlp);
2461
	return 0;
已提交
2462 2463
}

2464
/**
2465
 * lpfc_cancel_retry_delay_tmo - Cancel the timer with delayed iocb-cmd retry
2466 2467 2468 2469 2470 2471 2472 2473 2474 2475
 * @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.
 **/
2476
void
J
James Smart 已提交
2477
lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2478
{
J
James Smart 已提交
2479
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2480
	struct lpfc_work_evt *evtp;
J
James Smart 已提交
2481

2482 2483
	if (!(nlp->nlp_flag & NLP_DELAY_TMO))
		return;
J
James Smart 已提交
2484
	spin_lock_irq(shost->host_lock);
2485
	nlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2486
	spin_unlock_irq(shost->host_lock);
2487 2488
	del_timer_sync(&nlp->nlp_delayfunc);
	nlp->nlp_last_elscmd = 0;
2489
	if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2490
		list_del_init(&nlp->els_retry_evt.evt_listp);
2491 2492 2493 2494
		/* Decrement nlp reference count held for the delayed retry */
		evtp = &nlp->els_retry_evt;
		lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
	}
2495
	if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
J
James Smart 已提交
2496
		spin_lock_irq(shost->host_lock);
2497
		nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
2498 2499
		spin_unlock_irq(shost->host_lock);
		if (vport->num_disc_nodes) {
2500 2501 2502 2503 2504 2505
			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);
2506 2507 2508 2509 2510 2511 2512
				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);
				}
2513 2514 2515 2516 2517 2518
			}
		}
	}
	return;
}

2519
/**
2520
 * lpfc_els_retry_delay - Timer function with a ndlp delayed function timer
2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532
 * @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
2533 2534 2535
void
lpfc_els_retry_delay(unsigned long ptr)
{
J
James Smart 已提交
2536 2537 2538
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
	struct lpfc_vport *vport = ndlp->vport;
	struct lpfc_hba   *phba = vport->phba;
2539
	unsigned long flags;
J
James Smart 已提交
2540
	struct lpfc_work_evt  *evtp = &ndlp->els_retry_evt;
已提交
2541

2542
	spin_lock_irqsave(&phba->hbalock, flags);
已提交
2543
	if (!list_empty(&evtp->evt_listp)) {
2544
		spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2545 2546 2547
		return;
	}

2548 2549 2550 2551
	/* We need to hold the node by incrementing the reference
	 * count until the queued work is done
	 */
	evtp->evt_arg1  = lpfc_nlp_get(ndlp);
2552 2553 2554
	if (evtp->evt_arg1) {
		evtp->evt = LPFC_EVT_ELS_RETRY;
		list_add_tail(&evtp->evt_listp, &phba->work_list);
2555
		lpfc_worker_wake_up(phba);
2556
	}
2557
	spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2558 2559 2560
	return;
}

2561
/**
2562
 * lpfc_els_retry_delay_handler - Work thread handler for ndlp delayed function
2563 2564 2565 2566 2567 2568 2569
 * @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
2570 2571 2572
void
lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
2573 2574 2575
	struct lpfc_vport *vport = ndlp->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	uint32_t cmd, did, retry;
已提交
2576

J
James Smart 已提交
2577
	spin_lock_irq(shost->host_lock);
2578 2579 2580
	did = ndlp->nlp_DID;
	cmd = ndlp->nlp_last_elscmd;
	ndlp->nlp_last_elscmd = 0;
已提交
2581 2582

	if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
J
James Smart 已提交
2583
		spin_unlock_irq(shost->host_lock);
已提交
2584 2585 2586 2587
		return;
	}

	ndlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2588
	spin_unlock_irq(shost->host_lock);
2589 2590 2591 2592 2593 2594
	/*
	 * 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
2595
	retry = ndlp->nlp_retry;
2596
	ndlp->nlp_retry = 0;
已提交
2597 2598 2599

	switch (cmd) {
	case ELS_CMD_FLOGI:
J
James Smart 已提交
2600
		lpfc_issue_els_flogi(vport, ndlp, retry);
已提交
2601 2602
		break;
	case ELS_CMD_PLOGI:
J
James Smart 已提交
2603
		if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2604
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2605
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2606
		}
已提交
2607 2608
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
2609
		if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2610
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2611
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2612
		}
已提交
2613 2614
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
2615
		if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2616
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2617
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2618
		}
已提交
2619 2620
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
2621
		if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2622
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2623
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2624
		}
已提交
2625
		break;
2626 2627 2628
	case ELS_CMD_FDISC:
		lpfc_issue_els_fdisc(vport, ndlp, retry);
		break;
已提交
2629 2630 2631 2632
	}
	return;
}

2633
/**
2634
 * lpfc_els_retry - Make retry decision on an els command iocb
2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653
 * @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
2654
static int
J
James Smart 已提交
2655 2656
lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
	       struct lpfc_iocbq *rspiocb)
已提交
2657
{
J
James Smart 已提交
2658 2659 2660 2661 2662
	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
2663 2664
	uint32_t *elscmd;
	struct ls_rjt stat;
J
James Smart 已提交
2665
	int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2666
	int logerr = 0;
J
James Smart 已提交
2667
	uint32_t cmd = 0;
2668
	uint32_t did;
已提交
2669

2670

已提交
2671 2672 2673 2674 2675 2676 2677 2678 2679
	/* Note: context2 may be 0 for internal driver abort
	 * of delays ELS command.
	 */

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

2680
	if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2681 2682 2683 2684
		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
2685
		ndlp = lpfc_findnode_did(vport, did);
2686 2687
		if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
		    && (cmd != ELS_CMD_PLOGI))
2688 2689 2690
			return 1;
	}

J
James Smart 已提交
2691 2692 2693 2694
	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
2695 2696 2697 2698 2699 2700 2701 2702
	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:
2703 2704 2705 2706 2707 2708 2709 2710 2711
			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
2712
			if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
2713
				delay = 1000;
已提交
2714 2715 2716
			retry = 1;
			break;

2717
		case IOERR_ILLEGAL_COMMAND:
2718 2719 2720 2721 2722 2723 2724 2725 2726
			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;
2727 2728
			break;

已提交
2729
		case IOERR_NO_RESOURCES:
2730
			logerr = 1; /* HBA out of resources */
J
James Smart 已提交
2731 2732 2733 2734 2735 2736 2737
			retry = 1;
			if (cmdiocb->retry > 100)
				delay = 100;
			maxretry = 250;
			break;

		case IOERR_ILLEGAL_FRAME:
2738
			delay = 100;
已提交
2739 2740 2741
			retry = 1;
			break;

J
James Smart 已提交
2742
		case IOERR_SEQUENCE_TIMEOUT:
已提交
2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758
		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:
2759
		logerr = 1; /* Fabric / Remote NPort out of resources */
已提交
2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772
		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) {
2773
					delay = 1000;
已提交
2774 2775 2776 2777 2778
					maxretry = 48;
				}
				retry = 1;
				break;
			}
2779 2780 2781 2782 2783 2784 2785 2786 2787
			if (stat.un.b.lsRjtRsnCodeExp ==
			    LSEXP_CANT_GIVE_DATA) {
				if (cmd == ELS_CMD_PLOGI) {
					delay = 1000;
					maxretry = 48;
				}
				retry = 1;
				break;
			}
已提交
2788
			if (cmd == ELS_CMD_PLOGI) {
2789
				delay = 1000;
已提交
2790 2791 2792 2793
				maxretry = lpfc_max_els_tries + 1;
				retry = 1;
				break;
			}
2794 2795 2796
			if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
			  (cmd == ELS_CMD_FDISC) &&
			  (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
2797 2798 2799 2800
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
						 "0125 FDISC Failed (x%x). "
						 "Fabric out of resources\n",
						 stat.un.lsRjtError);
2801 2802 2803
				lpfc_vport_set_state(vport,
						     FC_VPORT_NO_FABRIC_RSCS);
			}
已提交
2804 2805 2806
			break;

		case LSRJT_LOGICAL_BSY:
J
James Smart 已提交
2807 2808
			if ((cmd == ELS_CMD_PLOGI) ||
			    (cmd == ELS_CMD_PRLI)) {
2809
				delay = 1000;
已提交
2810
				maxretry = 48;
2811
			} else if (cmd == ELS_CMD_FDISC) {
2812 2813 2814 2815
				/* FDISC retry policy */
				maxretry = 48;
				if (cmdiocb->retry >= 32)
					delay = 1000;
已提交
2816 2817 2818
			}
			retry = 1;
			break;
2819 2820

		case LSRJT_LOGICAL_ERR:
2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831
			/* 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;
			}
2832 2833 2834 2835 2836 2837
		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))
			  ) {
2838
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2839
						 "0122 FDISC Failed (x%x). "
2840 2841
						 "Fabric Detected Bad WWN\n",
						 stat.un.lsRjtError);
2842 2843 2844 2845
				lpfc_vport_set_state(vport,
						     FC_VPORT_FABRIC_REJ_WWN);
			}
			break;
已提交
2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856
		}
		break;

	case IOSTAT_INTERMED_RSP:
	case IOSTAT_BA_RJT:
		break;

	default:
		break;
	}

2857
	if (did == FDMI_DID)
已提交
2858 2859
		retry = 1;

2860
	if (((cmd == ELS_CMD_FLOGI) || (cmd == ELS_CMD_FDISC)) &&
2861 2862
	    (phba->fc_topology != TOPOLOGY_LOOP) &&
	    !lpfc_error_lost_link(irsp)) {
2863 2864
		/* FLOGI retry policy */
		retry = 1;
2865 2866 2867 2868 2869
		/* retry forever */
		maxretry = 0;
		if (cmdiocb->retry >= 100)
			delay = 5000;
		else if (cmdiocb->retry >= 32)
2870 2871 2872
			delay = 1000;
	}

2873 2874
	cmdiocb->retry++;
	if (maxretry && (cmdiocb->retry >= maxretry)) {
已提交
2875 2876 2877 2878
		phba->fc_stat.elsRetryExceeded++;
		retry = 0;
	}

2879 2880 2881
	if ((vport->load_flag & FC_UNLOADING) != 0)
		retry = 0;

已提交
2882 2883 2884
	if (retry) {

		/* Retry ELS command <elsCmd> to remote NPORT <did> */
2885 2886 2887 2888
		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
2889

J
James Smart 已提交
2890 2891 2892 2893 2894
		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
2895
			/* If discovery / RSCN timer is running, reset it */
J
James Smart 已提交
2896
			if (timer_pending(&vport->fc_disctmo) ||
2897
			    (vport->fc_flag & FC_RSCN_MODE))
J
James Smart 已提交
2898
				lpfc_set_disctmo(vport);
已提交
2899 2900 2901
		}

		phba->fc_stat.elsXmitRetry++;
2902
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
已提交
2903 2904 2905
			phba->fc_stat.elsDelayRetry++;
			ndlp->nlp_retry = cmdiocb->retry;

2906 2907 2908
			/* delay is specified in milliseconds */
			mod_timer(&ndlp->nlp_delayfunc,
				jiffies + msecs_to_jiffies(delay));
J
James Smart 已提交
2909
			spin_lock_irq(shost->host_lock);
已提交
2910
			ndlp->nlp_flag |= NLP_DELAY_TMO;
J
James Smart 已提交
2911
			spin_unlock_irq(shost->host_lock);
已提交
2912

2913
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2914 2915 2916 2917 2918 2919
			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
2920 2921
			ndlp->nlp_last_elscmd = cmd;

2922
			return 1;
已提交
2923 2924 2925
		}
		switch (cmd) {
		case ELS_CMD_FLOGI:
J
James Smart 已提交
2926
			lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
2927
			return 1;
2928 2929 2930
		case ELS_CMD_FDISC:
			lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
			return 1;
已提交
2931
		case ELS_CMD_PLOGI:
2932
			if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2933
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2934
				lpfc_nlp_set_state(vport, ndlp,
2935
						   NLP_STE_PLOGI_ISSUE);
2936
			}
J
James Smart 已提交
2937
			lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
2938
			return 1;
已提交
2939
		case ELS_CMD_ADISC:
2940
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2941 2942
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
2943
			return 1;
已提交
2944
		case ELS_CMD_PRLI:
2945
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2946 2947
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
			lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
2948
			return 1;
已提交
2949
		case ELS_CMD_LOGO:
2950
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2951 2952
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
			lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
2953
			return 1;
已提交
2954 2955 2956
		}
	}
	/* No retry ELS command <elsCmd> to remote NPORT <did> */
2957 2958 2959 2960 2961 2962 2963 2964 2965
	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,
2966 2967 2968 2969
			 "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]);
2970
	}
2971
	return 0;
已提交
2972 2973
}

2974
/**
2975
 * lpfc_els_free_data - Free lpfc dma buffer and data structure with an iocb
2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987
 * @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)
 **/
2988
static int
2989 2990 2991 2992
lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
{
	struct lpfc_dmabuf *buf_ptr;

2993
	/* Free the response before processing the command. */
2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005
	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;
}

3006
/**
3007
 * lpfc_els_free_bpl - Free lpfc dma buffer and data structure with bpl
3008 3009 3010 3011 3012 3013 3014 3015 3016 3017
 * @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)
 **/
3018
static int
3019 3020 3021 3022 3023 3024 3025
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;
}

3026
/**
3027
 * lpfc_els_free_iocb - Free a command iocb and its associated resources
3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052
 * @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
3053
int
3054
lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
已提交
3055 3056
{
	struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
3057 3058 3059 3060 3061 3062
	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
3063

3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075
			/* 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);
3076 3077
		elsiocb->context1 = NULL;
	}
已提交
3078 3079
	/* context2  = cmd,  context2->next = rsp, context3 = bpl */
	if (elsiocb->context2) {
3080 3081 3082 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 3108
		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
3109 3110 3111 3112
	}

	if (elsiocb->context3) {
		buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
3113
		lpfc_els_free_bpl(phba, buf_ptr);
已提交
3114
	}
3115
	lpfc_sli_release_iocbq(phba, elsiocb);
已提交
3116 3117 3118
	return 0;
}

3119
/**
3120
 * lpfc_cmpl_els_logo_acc - Completion callback function to logo acc response
3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135
 * @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
3136
static void
J
James Smart 已提交
3137 3138
lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		       struct lpfc_iocbq *rspiocb)
已提交
3139
{
J
James Smart 已提交
3140 3141
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_vport *vport = cmdiocb->vport;
J
James Smart 已提交
3142 3143 3144 3145 3146 3147
	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
3148
	/* ACC to LOGO completes to NPort <nlp_DID> */
3149 3150 3151 3152 3153
	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);
3154 3155 3156 3157 3158 3159 3160 3161

	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);
3162 3163 3164 3165 3166
		} else {
			/* Indicate the node has already released, should
			 * not reference to it from within lpfc_els_free_iocb.
			 */
			cmdiocb->context1 = NULL;
3167
		}
已提交
3168 3169 3170 3171 3172
	}
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

3173
/**
3174
 * lpfc_mbx_cmpl_dflt_rpi - Completion callbk func for unreg dflt rpi mbox cmd
3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185
 * @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
3186 3187 3188 3189 3190 3191
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;

3192 3193 3194 3195 3196 3197 3198 3199
	/*
	 * 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
3200 3201 3202 3203
	pmb->context1 = NULL;
	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	kfree(mp);
	mempool_free(pmb, phba->mbox_mem_pool);
3204
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
3205 3206 3207 3208 3209 3210 3211
		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);
	}
3212

J
James Smart 已提交
3213 3214 3215
	return;
}

3216
/**
3217
 * lpfc_cmpl_els_rsp - Completion callback function for els response iocb cmd
3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231
 * @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
3232
static void
J
James Smart 已提交
3233
lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3234
		  struct lpfc_iocbq *rspiocb)
已提交
3235
{
J
James Smart 已提交
3236 3237 3238
	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;
3239 3240
	IOCB_t  *irsp;
	uint8_t *pcmd;
已提交
3241
	LPFC_MBOXQ_t *mbox = NULL;
J
James Smart 已提交
3242
	struct lpfc_dmabuf *mp = NULL;
3243
	uint32_t ls_rjt = 0;
已提交
3244

J
James Smart 已提交
3245 3246
	irsp = &rspiocb->iocb;

已提交
3247 3248 3249
	if (cmdiocb->context_un.mbox)
		mbox = cmdiocb->context_un.mbox;

3250 3251 3252
	/* First determine if this is a LS_RJT cmpl. Note, this callback
	 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
	 */
3253
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3254 3255
	if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
	    (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3256
		/* A LS_RJT associated with Default RPI cleanup has its own
D
Daniel Mack 已提交
3257
		 * separate code path.
3258 3259 3260 3261 3262
		 */
		if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
			ls_rjt = 1;
	}

已提交
3263
	/* Check to see if link went down during discovery */
3264
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
已提交
3265
		if (mbox) {
3266 3267 3268 3269 3270
			mp = (struct lpfc_dmabuf *) mbox->context1;
			if (mp) {
				lpfc_mbuf_free(phba, mp->virt, mp->phys);
				kfree(mp);
			}
3271
			mempool_free(mbox, phba->mbox_mem_pool);
已提交
3272
		}
3273 3274
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
		    (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3275
			if (lpfc_nlp_not_used(ndlp)) {
3276
				ndlp = NULL;
3277 3278 3279 3280 3281 3282
				/* 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
3283 3284 3285
		goto out;
	}

J
James Smart 已提交
3286
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3287
		"ELS rsp cmpl:    status:x%x/x%x did:x%x",
J
James Smart 已提交
3288
		irsp->ulpStatus, irsp->un.ulpWord[4],
3289
		cmdiocb->iocb.un.elsreq64.remoteID);
已提交
3290
	/* ELS response tag <ulpIoTag> completes */
3291 3292 3293 3294 3295 3296 3297
	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
3298 3299 3300
	if (mbox) {
		if ((rspiocb->iocb.ulpStatus == 0)
		    && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
J
James Smart 已提交
3301
			lpfc_unreg_rpi(vport, ndlp);
3302 3303 3304
			/* Increment reference count to ndlp to hold the
			 * reference to ndlp for the callback function.
			 */
3305
			mbox->context2 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
3306
			mbox->vport = vport;
J
James Smart 已提交
3307 3308 3309 3310 3311 3312 3313 3314
			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
3315
					   NLP_STE_REG_LOGIN_ISSUE);
J
James Smart 已提交
3316
			}
3317
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3318
			    != MBX_NOT_FINISHED)
已提交
3319
				goto out;
3320 3321 3322 3323 3324
			else
				/* Decrement the ndlp reference count we
				 * set for this failed mailbox command.
				 */
				lpfc_nlp_put(ndlp);
3325 3326 3327 3328 3329 3330 3331 3332

			/* 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);

3333
			if (lpfc_nlp_not_used(ndlp)) {
3334
				ndlp = NULL;
3335 3336 3337 3338 3339 3340
				/* 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
3341
		} else {
J
James Smart 已提交
3342 3343 3344
			/* Do not drop node for lpfc_els_abort'ed ELS cmds */
			if (!lpfc_error_lost_link(irsp) &&
			    ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3345
				if (lpfc_nlp_not_used(ndlp)) {
3346
					ndlp = NULL;
3347 3348 3349 3350 3351 3352 3353
					/* 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
3354 3355
			}
		}
3356 3357 3358 3359 3360 3361
		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
3362 3363
	}
out:
3364
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
J
James Smart 已提交
3365
		spin_lock_irq(shost->host_lock);
J
James Smart 已提交
3366
		ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
J
James Smart 已提交
3367
		spin_unlock_irq(shost->host_lock);
3368 3369 3370 3371 3372 3373 3374

		/* 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)
3375 3376 3377 3378 3379 3380
			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
3381
	}
3382

已提交
3383 3384 3385 3386
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

3387
/**
3388
 * lpfc_els_rsp_acc - Prepare and issue an acc response iocb command
3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411
 * @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
3412
int
J
James Smart 已提交
3413 3414
lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
		 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3415
		 LPFC_MBOXQ_t *mbox)
已提交
3416
{
J
James Smart 已提交
3417 3418
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
3419 3420 3421 3422 3423 3424 3425
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;
3426
	ELS_PKT *els_pkt_ptr;
已提交
3427 3428 3429 3430 3431 3432

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

	switch (flag) {
	case ELS_CMD_ACC:
3433
		cmdsize = sizeof(uint32_t);
J
James Smart 已提交
3434 3435
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3436
		if (!elsiocb) {
J
James Smart 已提交
3437
			spin_lock_irq(shost->host_lock);
3438
			ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3439
			spin_unlock_irq(shost->host_lock);
3440
			return 1;
已提交
3441
		}
J
James Smart 已提交
3442

已提交
3443 3444 3445 3446
		icmd = &elsiocb->iocb;
		icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
		pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
		*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3447
		pcmd += sizeof(uint32_t);
J
James Smart 已提交
3448 3449 3450 3451

		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
3452 3453
		break;
	case ELS_CMD_PLOGI:
3454
		cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
J
James Smart 已提交
3455 3456
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3457
		if (!elsiocb)
3458
			return 1;
3459

已提交
3460 3461 3462 3463 3464 3465 3466 3467
		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;
3468 3469
		pcmd += sizeof(uint32_t);
		memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
J
James Smart 已提交
3470 3471 3472 3473

		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
3474
		break;
3475
	case ELS_CMD_PRLO:
3476
		cmdsize = sizeof(uint32_t) + sizeof(PRLO);
J
James Smart 已提交
3477
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3478 3479 3480 3481 3482 3483 3484 3485 3486
					     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,
3487
		       sizeof(uint32_t) + sizeof(PRLO));
3488 3489 3490
		*((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
3491 3492 3493 3494

		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);
3495
		break;
已提交
3496
	default:
3497
		return 1;
已提交
3498 3499
	}
	/* Xmit ELS ACC response tag <ulpIoTag> */
3500 3501 3502 3503 3504 3505
	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
3506
	if (ndlp->nlp_flag & NLP_LOGO_ACC) {
J
James Smart 已提交
3507
		spin_lock_irq(shost->host_lock);
3508
		ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3509
		spin_unlock_irq(shost->host_lock);
已提交
3510 3511
		elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
	} else {
J
James Smart 已提交
3512
		elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3513 3514 3515
	}

	phba->fc_stat.elsXmitACC++;
3516
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3517 3518
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3519
		return 1;
已提交
3520
	}
3521
	return 0;
已提交
3522 3523
}

3524
/**
3525
 * lpfc_els_rsp_reject - Propare and issue a rjt response iocb command
3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545
 * @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
3546
int
J
James Smart 已提交
3547
lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
J
James Smart 已提交
3548 3549
		    struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
		    LPFC_MBOXQ_t *mbox)
已提交
3550
{
J
James Smart 已提交
3551
	struct lpfc_hba  *phba = vport->phba;
已提交
3552 3553 3554 3555 3556 3557 3558 3559 3560
	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;
3561
	cmdsize = 2 * sizeof(uint32_t);
J
James Smart 已提交
3562 3563
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LS_RJT);
3564
	if (!elsiocb)
3565
		return 1;
已提交
3566 3567 3568 3569 3570 3571 3572

	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;
3573
	pcmd += sizeof(uint32_t);
已提交
3574 3575
	*((uint32_t *) (pcmd)) = rejectError;

3576
	if (mbox)
J
James Smart 已提交
3577 3578
		elsiocb->context_un.mbox = mbox;

已提交
3579
	/* Xmit ELS RJT <err> response tag <ulpIoTag> */
3580 3581 3582 3583 3584 3585 3586
	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
3587 3588 3589 3590
	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
3591
	phba->fc_stat.elsXmitLSRJT++;
J
James Smart 已提交
3592
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3593
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
3594

已提交
3595 3596
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3597
		return 1;
已提交
3598
	}
3599
	return 0;
已提交
3600 3601
}

3602
/**
3603
 * lpfc_els_rsp_adisc_acc - Prepare and issue acc response to adisc iocb cmd
3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620
 * @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
3621
int
J
James Smart 已提交
3622 3623
lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
		       struct lpfc_nodelist *ndlp)
已提交
3624
{
J
James Smart 已提交
3625
	struct lpfc_hba  *phba = vport->phba;
已提交
3626
	ADISC *ap;
J
James Smart 已提交
3627
	IOCB_t *icmd, *oldcmd;
已提交
3628 3629 3630 3631 3632
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

3633
	cmdsize = sizeof(uint32_t) + sizeof(ADISC);
J
James Smart 已提交
3634 3635
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3636
	if (!elsiocb)
3637
		return 1;
已提交
3638

3639 3640 3641 3642
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

已提交
3643
	/* Xmit ADISC ACC response tag <ulpIoTag> */
3644 3645 3646 3647 3648 3649
	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
3650 3651 3652
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3653
	pcmd += sizeof(uint32_t);
已提交
3654 3655 3656

	ap = (ADISC *) (pcmd);
	ap->hardAL_PA = phba->fc_pref_ALPA;
3657 3658
	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
3659
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
3660

J
James Smart 已提交
3661 3662 3663 3664
	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
3665
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3666
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3667
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3668 3669
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3670
		return 1;
已提交
3671
	}
3672
	return 0;
已提交
3673 3674
}

3675
/**
3676
 * lpfc_els_rsp_prli_acc - Prepare and issue acc response to prli iocb cmd
3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693
 * @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
3694
int
J
James Smart 已提交
3695
lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3696
		      struct lpfc_nodelist *ndlp)
已提交
3697
{
J
James Smart 已提交
3698
	struct lpfc_hba  *phba = vport->phba;
已提交
3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710
	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;

3711
	cmdsize = sizeof(uint32_t) + sizeof(PRLI);
J
James Smart 已提交
3712
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3713
		ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
3714 3715
	if (!elsiocb)
		return 1;
已提交
3716

3717 3718 3719
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3720
	/* Xmit PRLI ACC response tag <ulpIoTag> */
3721 3722 3723 3724 3725 3726
	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
3727 3728 3729
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
3730
	pcmd += sizeof(uint32_t);
已提交
3731 3732

	/* For PRLI, remainder of payload is PRLI parameter page */
3733
	memset(pcmd, 0, sizeof(PRLI));
已提交
3734 3735 3736 3737

	npr = (PRLI *) pcmd;
	vpd = &phba->vpd;
	/*
3738 3739
	 * 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
3740
	 */
3741 3742
	if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
	    (vpd->rev.feaLevelHigh >= 0x02)) {
已提交
3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755
		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
3756 3757 3758 3759
	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
3760
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3761
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3762

3763
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3764 3765
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3766
		return 1;
已提交
3767
	}
3768
	return 0;
已提交
3769 3770
}

3771
/**
3772
 * lpfc_els_rsp_rnid_acc - Issue rnid acc response iocb command
3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796
 * @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
3797
static int
J
James Smart 已提交
3798
lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
3799
		      struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
已提交
3800
{
J
James Smart 已提交
3801
	struct lpfc_hba  *phba = vport->phba;
已提交
3802
	RNID *rn;
J
James Smart 已提交
3803
	IOCB_t *icmd, *oldcmd;
已提交
3804 3805 3806 3807 3808 3809 3810
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

	psli = &phba->sli;
3811 3812
	cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
					+ (2 * sizeof(struct lpfc_name));
已提交
3813
	if (format)
3814
		cmdsize += sizeof(RNID_TOP_DISC);
已提交
3815

J
James Smart 已提交
3816 3817
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3818
	if (!elsiocb)
3819
		return 1;
已提交
3820

3821 3822 3823
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3824
	/* Xmit RNID ACC response tag <ulpIoTag> */
3825 3826 3827
	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
3828 3829
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3830
	pcmd += sizeof(uint32_t);
已提交
3831

3832
	memset(pcmd, 0, sizeof(RNID));
已提交
3833 3834
	rn = (RNID *) (pcmd);
	rn->Format = format;
3835 3836 3837
	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
3838 3839 3840 3841 3842
	switch (format) {
	case 0:
		rn->SpecificLen = 0;
		break;
	case RNID_TOPOLOGY_DISC:
3843
		rn->SpecificLen = sizeof(RNID_TOP_DISC);
已提交
3844
		memcpy(&rn->un.topologyDisc.portName,
3845
		       &vport->fc_portname, sizeof(struct lpfc_name));
已提交
3846 3847 3848 3849 3850 3851 3852 3853 3854 3855
		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
3856 3857 3858 3859
	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
3860
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3861
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3862
	lpfc_nlp_put(ndlp);
已提交
3863 3864 3865
	elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
				    * it could be freed */

3866
	rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0);
已提交
3867 3868
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3869
		return 1;
已提交
3870
	}
3871
	return 0;
已提交
3872 3873
}

3874
/**
3875
 * lpfc_els_disc_adisc - Issue remaining adisc iocbs to npr nodes of a vport
3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892
 * @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
3893
int
J
James Smart 已提交
3894
lpfc_els_disc_adisc(struct lpfc_vport *vport)
已提交
3895
{
J
James Smart 已提交
3896
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3897
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
3898
	int sentadisc = 0;
已提交
3899

3900
	/* go thru NPR nodes and issue any remaining ELS ADISCs */
J
James Smart 已提交
3901
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3902 3903
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
3904 3905 3906
		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
3907
			spin_lock_irq(shost->host_lock);
3908
			ndlp->nlp_flag &= ~NLP_NPR_ADISC;
J
James Smart 已提交
3909
			spin_unlock_irq(shost->host_lock);
3910
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
3911 3912
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, 0);
3913
			sentadisc++;
J
James Smart 已提交
3914 3915
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
3916
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
3917 3918 3919
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
3920
				break;
已提交
3921 3922 3923 3924
			}
		}
	}
	if (sentadisc == 0) {
J
James Smart 已提交
3925 3926 3927
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
3928
	}
3929
	return sentadisc;
已提交
3930 3931
}

3932
/**
3933
 * lpfc_els_disc_plogi - Issue plogi for all npr nodes of a vport before adisc
3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950
 * @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
3951
int
J
James Smart 已提交
3952
lpfc_els_disc_plogi(struct lpfc_vport *vport)
已提交
3953
{
J
James Smart 已提交
3954
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3955
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
3956
	int sentplogi = 0;
已提交
3957

J
James Smart 已提交
3958 3959
	/* go thru NPR nodes and issue any remaining ELS PLOGIs */
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3960 3961
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
3962 3963 3964 3965 3966
		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
3967 3968
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
			lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
3969
			sentplogi++;
J
James Smart 已提交
3970 3971
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
3972
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
3973 3974 3975
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
3976
				break;
已提交
3977 3978 3979
			}
		}
	}
3980 3981 3982 3983
	if (sentplogi) {
		lpfc_set_disctmo(vport);
	}
	else {
J
James Smart 已提交
3984 3985 3986
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
3987
	}
3988
	return sentplogi;
已提交
3989 3990
}

3991
/**
3992
 * lpfc_els_flush_rscn - Clean up any rscn activities with a vport
3993 3994 3995 3996 3997 3998 3999
 * @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.
 **/
4000
void
J
James Smart 已提交
4001
lpfc_els_flush_rscn(struct lpfc_vport *vport)
已提交
4002
{
J
James Smart 已提交
4003 4004
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4005 4006
	int i;

4007 4008 4009 4010 4011 4012 4013 4014 4015 4016
	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
4017
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4018
		lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
J
James Smart 已提交
4019
		vport->fc_rscn_id_list[i] = NULL;
已提交
4020
	}
J
James Smart 已提交
4021 4022 4023 4024 4025
	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);
4026 4027
	/* Indicate we are done walking this fc_rscn_id_list */
	vport->fc_rscn_flush = 0;
已提交
4028 4029
}

4030
/**
4031
 * lpfc_rscn_payload_check - Check whether there is a pending rscn to a did
4032 4033 4034 4035 4036 4037 4038 4039 4040 4041
 * @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
4042
int
J
James Smart 已提交
4043
lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
已提交
4044 4045 4046 4047
{
	D_ID ns_did;
	D_ID rscn_did;
	uint32_t *lp;
4048
	uint32_t payload_len, i;
4049
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
4050 4051 4052 4053 4054

	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
4055
		return 0;
已提交
4056 4057

	/* If we are doing a FULL RSCN rediscovery, match everything */
J
James Smart 已提交
4058
	if (vport->fc_flag & FC_RSCN_DISCOVERY)
4059
		return did;
已提交
4060

4061 4062 4063 4064 4065 4066 4067 4068 4069
	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
4070
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
4071 4072 4073
		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
4074
		while (payload_len) {
4075 4076
			rscn_did.un.word = be32_to_cpu(*lp++);
			payload_len -= sizeof(uint32_t);
4077 4078
			switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
			case RSCN_ADDRESS_FORMAT_PORT:
4079 4080 4081
				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))
4082
					goto return_did_out;
已提交
4083
				break;
4084
			case RSCN_ADDRESS_FORMAT_AREA:
已提交
4085 4086
				if ((ns_did.un.b.domain == rscn_did.un.b.domain)
				    && (ns_did.un.b.area == rscn_did.un.b.area))
4087
					goto return_did_out;
已提交
4088
				break;
4089
			case RSCN_ADDRESS_FORMAT_DOMAIN:
已提交
4090
				if (ns_did.un.b.domain == rscn_did.un.b.domain)
4091
					goto return_did_out;
已提交
4092
				break;
4093
			case RSCN_ADDRESS_FORMAT_FABRIC:
4094
				goto return_did_out;
已提交
4095 4096
			}
		}
4097
	}
4098 4099
	/* Indicate we are done with walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
4100
	return 0;
4101 4102 4103 4104
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
4105 4106
}

4107
/**
4108
 * lpfc_rscn_recovery_check - Send recovery event to vport nodes matching rscn
4109 4110 4111 4112 4113 4114 4115 4116 4117
 * @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
4118
static int
J
James Smart 已提交
4119
lpfc_rscn_recovery_check(struct lpfc_vport *vport)
已提交
4120
{
4121
	struct lpfc_nodelist *ndlp = NULL;
已提交
4122

4123
	/* Move all affected nodes by pending RSCNs to NPR state. */
J
James Smart 已提交
4124
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4125
		if (!NLP_CHK_NODE_ACT(ndlp) ||
4126 4127
		    (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
		    !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
4128
			continue;
J
James Smart 已提交
4129
		lpfc_disc_state_machine(vport, ndlp, NULL,
4130 4131
					NLP_EVT_DEVICE_RECOVERY);
		lpfc_cancel_retry_delay_tmo(vport, ndlp);
已提交
4132
	}
4133
	return 0;
已提交
4134 4135
}

4136
/**
4137
 * lpfc_send_rscn_event - Send an RSCN event to management application
4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178
 * @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);
}

4179
/**
4180
 * lpfc_els_rcv_rscn - Process an unsolicited rscn iocb
4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200
 * @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
4201
static int
J
James Smart 已提交
4202
lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4203
		  struct lpfc_nodelist *ndlp)
已提交
4204
{
J
James Smart 已提交
4205 4206
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4207
	struct lpfc_dmabuf *pcmd;
4208
	uint32_t *lp, *datap;
已提交
4209
	IOCB_t *icmd;
4210
	uint32_t payload_len, length, nportid, *cmd;
4211
	int rscn_cnt;
4212
	int rscn_id = 0, hba_id = 0;
4213
	int i;
已提交
4214 4215 4216 4217 4218

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

4219 4220
	payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
	payload_len -= sizeof(uint32_t);	/* take off word 0 */
已提交
4221
	/* RSCN received */
4222 4223
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0214 RSCN received Data: x%x x%x x%x x%x\n",
4224 4225
			 vport->fc_flag, payload_len, *lp,
			 vport->fc_rscn_id_cnt);
4226 4227 4228 4229

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

4230
	for (i = 0; i < payload_len/sizeof(uint32_t); i++)
J
James Smart 已提交
4231
		fc_host_post_event(shost, fc_get_event_number(),
4232 4233
			FCH_EVT_RSCN, lp[i]);

已提交
4234 4235 4236
	/* If we are about to begin discovery, just ACC the RSCN.
	 * Discovery processing will satisfy it.
	 */
J
James Smart 已提交
4237
	if (vport->port_state <= LPFC_NS_QRY) {
J
James Smart 已提交
4238 4239 4240 4241
		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);

4242
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4243
		return 0;
已提交
4244 4245
	}

4246 4247 4248 4249
	/* 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) &&
4250
		!(vport->cfg_peer_port_login)) {
4251 4252 4253 4254 4255 4256 4257
		i = payload_len;
		datap = lp;
		while (i > 0) {
			nportid = *datap++;
			nportid = ((be32_to_cpu(nportid)) & Mask_DID);
			i -= sizeof(uint32_t);
			rscn_id++;
4258 4259
			if (lpfc_find_vport_by_did(phba, nportid))
				hba_id++;
4260 4261 4262
		}
		if (rscn_id == hba_id) {
			/* ALL NPortIDs in RSCN are on HBA */
4263
			lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4264
					 "0219 Ignore RSCN "
4265 4266
					 "Data: x%x x%x x%x x%x\n",
					 vport->fc_flag, payload_len,
4267
					 *lp, vport->fc_rscn_id_cnt);
J
James Smart 已提交
4268 4269 4270 4271 4272
			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);

4273
			lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4274
				ndlp, NULL);
4275 4276 4277 4278
			return 0;
		}
	}

4279 4280 4281 4282
	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;
4283
		spin_unlock_irq(shost->host_lock);
4284 4285
		/* Send back ACC */
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4286 4287 4288 4289 4290
		return 0;
	}
	/* Indicate we are walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 1;
	spin_unlock_irq(shost->host_lock);
4291
	/* Get the array count after successfully have the token */
4292
	rscn_cnt = vport->fc_rscn_id_cnt;
已提交
4293 4294 4295
	/* If we are already processing an RSCN, save the received
	 * RSCN payload buffer, cmdiocb->context2 to process later.
	 */
J
James Smart 已提交
4296
	if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
J
James Smart 已提交
4297 4298 4299 4300
		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);

4301
		spin_lock_irq(shost->host_lock);
4302 4303
		vport->fc_flag |= FC_RSCN_DEFERRED;
		if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
J
James Smart 已提交
4304 4305 4306
		    !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
			vport->fc_flag |= FC_RSCN_MODE;
			spin_unlock_irq(shost->host_lock);
4307 4308 4309 4310 4311 4312 4313
			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;
4314
				*cmd |= cpu_to_be32(payload_len + length);
4315 4316 4317 4318 4319 4320 4321 4322 4323 4324
				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
4325
			/* Deferred RSCN */
4326 4327 4328 4329 4330
			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
4331
		} else {
J
James Smart 已提交
4332 4333
			vport->fc_flag |= FC_RSCN_DISCOVERY;
			spin_unlock_irq(shost->host_lock);
已提交
4334
			/* ReDiscovery RSCN */
4335 4336 4337 4338 4339
			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
4340
		}
4341 4342
		/* Indicate we are done walking fc_rscn_id_list on this vport */
		vport->fc_rscn_flush = 0;
已提交
4343
		/* Send back ACC */
4344
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4345
		/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4346
		lpfc_rscn_recovery_check(vport);
4347
		spin_lock_irq(shost->host_lock);
4348
		vport->fc_flag &= ~FC_RSCN_DEFERRED;
4349
		spin_unlock_irq(shost->host_lock);
4350
		return 0;
已提交
4351
	}
J
James Smart 已提交
4352 4353 4354 4355
	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
4356 4357 4358 4359
	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;
4360 4361
	/* Indicate we are done walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
已提交
4362 4363 4364 4365 4366
	/*
	 * If we zero, cmdiocb->context2, the calling routine will
	 * not try to free it.
	 */
	cmdiocb->context2 = NULL;
J
James Smart 已提交
4367
	lpfc_set_disctmo(vport);
已提交
4368
	/* Send back ACC */
4369
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4370
	/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4371 4372
	lpfc_rscn_recovery_check(vport);
	return lpfc_els_handle_rscn(vport);
已提交
4373 4374
}

4375
/**
4376
 * lpfc_els_handle_rscn - Handle rscn for a vport
4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390
 * @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
4391
int
J
James Smart 已提交
4392
lpfc_els_handle_rscn(struct lpfc_vport *vport)
已提交
4393 4394
{
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
4395
	struct lpfc_hba *phba = vport->phba;
已提交
4396

4397 4398 4399 4400 4401 4402
	/* 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
4403
	/* Start timer for RSCN processing */
J
James Smart 已提交
4404
	lpfc_set_disctmo(vport);
已提交
4405 4406

	/* RSCN processed */
4407 4408 4409 4410
	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
4411 4412

	/* To process RSCN, first compare RSCN data with NameServer */
J
James Smart 已提交
4413
	vport->fc_ns_retry = 0;
4414 4415
	vport->num_disc_nodes = 0;

J
James Smart 已提交
4416
	ndlp = lpfc_findnode_did(vport, NameServer_DID);
4417 4418
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)
	    && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
已提交
4419
		/* Good ndlp, issue CT Request to NameServer */
4420
		if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
已提交
4421 4422
			/* Wait for NameServer query cmpl before we can
			   continue */
4423
			return 1;
已提交
4424 4425 4426
	} else {
		/* If login to NameServer does not exist, issue one */
		/* Good status, issue PLOGI to NameServer */
J
James Smart 已提交
4427
		ndlp = lpfc_findnode_did(vport, NameServer_DID);
4428
		if (ndlp && NLP_CHK_NODE_ACT(ndlp))
已提交
4429 4430
			/* Wait for NameServer login cmpl before we can
			   continue */
4431
			return 1;
J
James Smart 已提交
4432

4433 4434 4435 4436 4437 4438 4439 4440
		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
4441
		} else {
4442 4443 4444 4445 4446
			ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
			if (!ndlp) {
				lpfc_els_flush_rscn(vport);
				return 0;
			}
J
James Smart 已提交
4447
			lpfc_nlp_init(vport, ndlp, NameServer_DID);
4448
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
4449
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
已提交
4450
		}
4451 4452 4453 4454 4455 4456
		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
4457 4458
	}

J
James Smart 已提交
4459
	lpfc_els_flush_rscn(vport);
4460
	return 0;
已提交
4461 4462
}

4463
/**
4464
 * lpfc_els_rcv_flogi - Process an unsolicited flogi iocb
4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487
 * @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
4488
static int
J
James Smart 已提交
4489
lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4490
		   struct lpfc_nodelist *ndlp)
已提交
4491
{
J
James Smart 已提交
4492 4493
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507
	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
4508
	lpfc_set_disctmo(vport);
已提交
4509 4510 4511 4512 4513 4514 4515

	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 */
4516 4517 4518 4519
		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);
4520
		return 1;
已提交
4521 4522 4523 4524
	}

	did = Fabric_DID;

4525
	if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 1))) {
已提交
4526 4527 4528 4529
		/* 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
4530
		rc = memcmp(&vport->fc_portname, &sp->portName,
4531
			    sizeof(struct lpfc_name));
已提交
4532 4533

		if (!rc) {
J
James Smart 已提交
4534 4535
			mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
			if (!mbox)
4536
				return 1;
J
James Smart 已提交
4537

已提交
4538 4539 4540 4541
			lpfc_linkdown(phba);
			lpfc_init_link(phba, mbox,
				       phba->cfg_topology,
				       phba->cfg_link_speed);
4542
			mbox->u.mb.un.varInitLnk.lipsr_AL_PA = 0;
已提交
4543
			mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4544
			mbox->vport = vport;
4545
			rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4546
			lpfc_set_loopback_flag(phba);
已提交
4547
			if (rc == MBX_NOT_FINISHED) {
4548
				mempool_free(mbox, phba->mbox_mem_pool);
已提交
4549
			}
4550
			return 1;
4551
		} else if (rc > 0) {	/* greater than */
J
James Smart 已提交
4552 4553 4554
			spin_lock_irq(shost->host_lock);
			vport->fc_flag |= FC_PT2PT_PLOGI;
			spin_unlock_irq(shost->host_lock);
已提交
4555
		}
J
James Smart 已提交
4556 4557 4558 4559
		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
4560 4561 4562 4563 4564 4565
	} 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
4566 4567
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
4568
		return 1;
已提交
4569 4570 4571
	}

	/* Send back ACC */
4572
	lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
已提交
4573

4574
	return 0;
已提交
4575 4576
}

4577
/**
4578
 * lpfc_els_rcv_rnid - Process an unsolicited rnid iocb
4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592
 * @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
4593
static int
J
James Smart 已提交
4594 4595
lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617
{
	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
4618
		lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
已提交
4619 4620 4621 4622 4623 4624 4625
		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
4626 4627
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
已提交
4628
	}
4629
	return 0;
已提交
4630 4631
}

4632
/**
4633
 * lpfc_els_rcv_lirr - Process an unsolicited lirr iocb
4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644
 * @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
4645
static int
J
James Smart 已提交
4646 4647
lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
4648 4649 4650 4651 4652 4653 4654 4655
{
	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
4656
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4657 4658 4659
	return 0;
}

4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682
/**
 * 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);
}

4683
/**
4684
 * lpfc_els_rsp_rps_acc - Completion callbk func for MBX_READ_LNK_STAT mbox cmd
4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701
 * @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.
 *
 **/
4702
static void
4703
lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4704 4705 4706 4707 4708 4709 4710 4711 4712 4713
{
	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;

4714
	mb = &pmb->u.mb;
4715 4716 4717

	ndlp = (struct lpfc_nodelist *) pmb->context2;
	xri = (uint16_t) ((unsigned long)(pmb->context1));
R
Randy Dunlap 已提交
4718 4719
	pmb->context1 = NULL;
	pmb->context2 = NULL;
4720 4721

	if (mb->mbxStatus) {
4722
		mempool_free(pmb, phba->mbox_mem_pool);
4723 4724 4725 4726
		return;
	}

	cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
4727
	mempool_free(pmb, phba->mbox_mem_pool);
J
James Smart 已提交
4728 4729 4730
	elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
				     lpfc_max_els_tries, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
4731 4732

	/* Decrement the ndlp reference count from previous mbox command */
4733
	lpfc_nlp_put(ndlp);
4734

4735
	if (!elsiocb)
4736 4737 4738 4739 4740 4741 4742
		return;

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

	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4743
	pcmd += sizeof(uint32_t); /* Skip past command */
4744 4745 4746 4747 4748 4749
	rps_rsp = (RPS_RSP *)pcmd;

	if (phba->fc_topology != TOPOLOGY_LOOP)
		status = 0x10;
	else
		status = 0x8;
J
James Smart 已提交
4750
	if (phba->pport->fc_flag & FC_FABRIC)
4751 4752 4753
		status |= 0x4;

	rps_rsp->rsvd1 = 0;
4754 4755 4756 4757 4758 4759 4760
	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);
4761
	/* Xmit ELS RPS ACC response tag <ulpIoTag> */
4762 4763 4764 4765 4766 4767
	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
4768
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4769
	phba->fc_stat.elsXmitACC++;
4770
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) == IOCB_ERROR)
4771 4772 4773 4774
		lpfc_els_free_iocb(phba, elsiocb);
	return;
}

4775
/**
4776
 * lpfc_els_rcv_rps - Process an unsolicited rps iocb
4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792
 * @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)
 **/
4793
static int
J
James Smart 已提交
4794 4795
lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
已提交
4796
{
J
James Smart 已提交
4797
	struct lpfc_hba *phba = vport->phba;
已提交
4798
	uint32_t *lp;
4799 4800 4801 4802 4803 4804
	uint8_t flag;
	LPFC_MBOXQ_t *mbox;
	struct lpfc_dmabuf *pcmd;
	RPS *rps;
	struct ls_rjt stat;

4805
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4806 4807 4808
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
		/* reject the unsolicited RPS request and done with it */
		goto reject_out;
4809 4810 4811 4812 4813 4814 4815 4816

	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
4817
	    ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
4818
				    sizeof(struct lpfc_name)) == 0))) {
J
James Smart 已提交
4819

4820 4821
		printk("Fix me....\n");
		dump_stack();
J
James Smart 已提交
4822 4823
		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
		if (mbox) {
4824 4825
			lpfc_read_lnk_stat(phba, mbox);
			mbox->context1 =
4826
			    (void *)((unsigned long) cmdiocb->iocb.ulpContext);
4827
			mbox->context2 = lpfc_nlp_get(ndlp);
4828
			mbox->vport = vport;
4829
			mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
4830
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
4831
				!= MBX_NOT_FINISHED)
4832 4833
				/* Mbox completion will send ELS Response */
				return 0;
4834 4835 4836
			/* Decrement reference count used for the failed mbox
			 * command.
			 */
4837
			lpfc_nlp_put(ndlp);
4838 4839 4840
			mempool_free(mbox, phba->mbox_mem_pool);
		}
	}
4841 4842 4843

reject_out:
	/* issue rejection response */
4844 4845 4846 4847
	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
4848
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4849 4850 4851
	return 0;
}

4852
/**
4853
 * lpfc_els_rsp_rpl_acc - Issue an accept rpl els command
4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870
 * @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
 **/
4871
static int
J
James Smart 已提交
4872 4873
lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
		     struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4874
{
J
James Smart 已提交
4875 4876
	struct lpfc_hba *phba = vport->phba;
	IOCB_t *icmd, *oldcmd;
4877 4878 4879
	RPL_RSP rpl_rsp;
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
已提交
4880

J
James Smart 已提交
4881 4882
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
4883

4884
	if (!elsiocb)
4885
		return 1;
4886

4887 4888 4889 4890 4891 4892
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

	pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4893
	pcmd += sizeof(uint16_t);
4894 4895 4896 4897 4898 4899 4900
	*((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
4901 4902
	rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
	memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
4903 4904 4905
	    sizeof(struct lpfc_name));
	memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
	/* Xmit ELS RPL ACC response tag <ulpIoTag> */
4906 4907 4908 4909 4910 4911 4912
	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
4913
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4914
	phba->fc_stat.elsXmitACC++;
4915 4916
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
4917 4918 4919 4920 4921 4922
		lpfc_els_free_iocb(phba, elsiocb);
		return 1;
	}
	return 0;
}

4923
/**
4924
 * lpfc_els_rcv_rpl - Process an unsolicited rpl iocb
4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938
 * @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)
 **/
4939
static int
J
James Smart 已提交
4940 4941
lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
4942 4943 4944 4945 4946 4947 4948 4949
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	uint32_t maxsize;
	uint16_t cmdsize;
	RPL *rpl;
	struct ls_rjt stat;

4950 4951
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
4952
		/* issue rejection response */
4953 4954 4955 4956
		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
4957 4958
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
4959 4960
		/* rejected the unsolicited RPL request and done with it */
		return 0;
4961 4962
	}

已提交
4963 4964
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;
4965
	rpl = (RPL *) (lp + 1);
已提交
4966

4967
	maxsize = be32_to_cpu(rpl->maxsize);
已提交
4968

4969 4970 4971 4972 4973
	/* 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);
4974
	} else {
4975 4976
		cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
	}
J
James Smart 已提交
4977
	lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
已提交
4978 4979 4980 4981

	return 0;
}

4982
/**
4983
 * lpfc_els_rcv_farp - Process an unsolicited farp request els command
4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005
 * @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
5006
static int
J
James Smart 已提交
5007 5008
lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023
{
	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> */
5024 5025
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0601 FARP-REQ received from DID x%x\n", did);
已提交
5026 5027
	/* We will only support match on WWPN or WWNN */
	if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
5028
		return 0;
已提交
5029 5030 5031 5032 5033
	}

	cnt = 0;
	/* If this FARP command is searching for my portname */
	if (fp->Mflags & FARP_MATCH_PORT) {
J
James Smart 已提交
5034
		if (memcmp(&fp->RportName, &vport->fc_portname,
5035
			   sizeof(struct lpfc_name)) == 0)
已提交
5036 5037 5038 5039 5040
			cnt = 1;
	}

	/* If this FARP command is searching for my nodename */
	if (fp->Mflags & FARP_MATCH_NODE) {
J
James Smart 已提交
5041
		if (memcmp(&fp->RnodeName, &vport->fc_nodename,
5042
			   sizeof(struct lpfc_name)) == 0)
已提交
5043 5044 5045 5046 5047 5048 5049 5050
			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) {
5051
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
5052
				lpfc_nlp_set_state(vport, ndlp,
5053
						   NLP_STE_PLOGI_ISSUE);
J
James Smart 已提交
5054
				lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
已提交
5055 5056 5057
			}

			/* Send a FARP response to that node */
J
James Smart 已提交
5058 5059
			if (fp->Rflags & FARP_REQUEST_FARPR)
				lpfc_issue_els_farpr(vport, did, 0);
已提交
5060 5061
		}
	}
5062
	return 0;
已提交
5063 5064
}

5065
/**
5066
 * lpfc_els_rcv_farpr - Process an unsolicited farp response iocb
5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078
 * @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
5079
static int
J
James Smart 已提交
5080 5081
lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_nodelist  *ndlp)
已提交
5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094
{
	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> */
5095 5096
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0600 FARP-RSP received from DID x%x\n", did);
已提交
5097
	/* ACCEPT the Farp resp request */
5098
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
5099 5100 5101 5102

	return 0;
}

5103
/**
5104
 * lpfc_els_rcv_fan - Process an unsolicited fan iocb command
5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121
 * @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
5122
static int
J
James Smart 已提交
5123 5124
lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *fan_ndlp)
已提交
5125
{
5126
	struct lpfc_hba *phba = vport->phba;
已提交
5127
	uint32_t *lp;
5128
	FAN *fp;
已提交
5129

5130 5131 5132
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
	lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
	fp = (FAN *) ++lp;
5133
	/* FAN received; Fan does not have a reply sequence */
5134 5135
	if ((vport == phba->pport) &&
	    (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
5136
		if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
5137
			    sizeof(struct lpfc_name))) ||
5138
		    (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
5139 5140
			    sizeof(struct lpfc_name)))) {
			/* This port has switched fabrics. FLOGI is required */
J
James Smart 已提交
5141
			lpfc_initial_flogi(vport);
5142 5143 5144
		} else {
			/* FAN verified - skip FLOGI */
			vport->fc_myDID = vport->fc_prevDID;
5145 5146 5147 5148
			if (phba->sli_rev < LPFC_SLI_REV4)
				lpfc_issue_fabric_reglogin(vport);
			else
				lpfc_issue_reg_vfi(vport);
5149
		}
已提交
5150
	}
5151
	return 0;
已提交
5152 5153
}

5154
/**
5155
 * lpfc_els_timeout - Handler funciton to the els timer
5156 5157 5158 5159 5160 5161 5162 5163
 * @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
5164 5165 5166
void
lpfc_els_timeout(unsigned long ptr)
{
J
James Smart 已提交
5167 5168
	struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
	struct lpfc_hba   *phba = vport->phba;
5169
	uint32_t tmo_posted;
已提交
5170 5171
	unsigned long iflag;

J
James Smart 已提交
5172
	spin_lock_irqsave(&vport->work_port_lock, iflag);
5173 5174
	tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
	if (!tmo_posted)
J
James Smart 已提交
5175
		vport->work_port_events |= WORKER_ELS_TMO;
5176
	spin_unlock_irqrestore(&vport->work_port_lock, iflag);
5177

5178 5179
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
已提交
5180 5181 5182
	return;
}

5183

5184
/**
5185
 * lpfc_els_timeout_handler - Process an els timeout event
5186 5187 5188 5189 5190 5191 5192
 * @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
5193
void
J
James Smart 已提交
5194
lpfc_els_timeout_handler(struct lpfc_vport *vport)
已提交
5195
{
J
James Smart 已提交
5196
	struct lpfc_hba  *phba = vport->phba;
已提交
5197 5198 5199 5200
	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
5201
	uint32_t els_command = 0;
已提交
5202
	uint32_t timeout;
J
James Smart 已提交
5203
	uint32_t remote_ID = 0xffffffff;
5204 5205 5206
	LIST_HEAD(txcmplq_completions);
	LIST_HEAD(abort_list);

已提交
5207 5208 5209 5210 5211

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

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

5212 5213 5214 5215 5216
	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
5217 5218
		cmd = &piocb->iocb;

J
James Smart 已提交
5219 5220 5221
		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
5222
			continue;
J
James Smart 已提交
5223 5224 5225 5226

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

已提交
5227
		pcmd = (struct lpfc_dmabuf *) piocb->context2;
J
James Smart 已提交
5228 5229
		if (pcmd)
			els_command = *(uint32_t *) (pcmd->virt);
已提交
5230

5231 5232 5233 5234 5235
		if (els_command == ELS_CMD_FARP ||
		    els_command == ELS_CMD_FARPR ||
		    els_command == ELS_CMD_FDISC)
			continue;

已提交
5236
		if (piocb->drvrTimeout > 0) {
5237
			if (piocb->drvrTimeout >= timeout)
已提交
5238
				piocb->drvrTimeout -= timeout;
5239
			else
已提交
5240 5241 5242 5243
				piocb->drvrTimeout = 0;
			continue;
		}

J
James Smart 已提交
5244 5245
		remote_ID = 0xffffffff;
		if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
已提交
5246
			remote_ID = cmd->un.elsreq64.remoteID;
J
James Smart 已提交
5247 5248 5249
		else {
			struct lpfc_nodelist *ndlp;
			ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
5250
			if (ndlp && NLP_CHK_NODE_ACT(ndlp))
J
James Smart 已提交
5251
				remote_ID = ndlp->nlp_DID;
已提交
5252
		}
5253 5254 5255 5256 5257 5258 5259
		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) {
5260
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5261 5262 5263 5264 5265
			 "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);
5266
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
5267
		spin_unlock_irq(&phba->hbalock);
已提交
5268
	}
5269

J
James Smart 已提交
5270 5271
	if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
		mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
已提交
5272 5273
}

5274
/**
5275
 * lpfc_els_flush_cmd - Clean up the outstanding els commands to a vport
5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293
 * @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
5294
void
J
James Smart 已提交
5295
lpfc_els_flush_cmd(struct lpfc_vport *vport)
已提交
5296
{
5297
	LIST_HEAD(completions);
J
James Smart 已提交
5298
	struct lpfc_hba  *phba = vport->phba;
5299
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
已提交
5300 5301
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;
5302 5303

	lpfc_fabric_abort_vport(vport);
已提交
5304

J
James Smart 已提交
5305
	spin_lock_irq(&phba->hbalock);
已提交
5306 5307 5308 5309 5310 5311 5312 5313
	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 */
5314 5315 5316 5317
		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
5318 5319
			continue;

J
James Smart 已提交
5320 5321 5322
		if (piocb->vport != vport)
			continue;

5323
		list_move_tail(&piocb->list, &completions);
5324
		pring->txq_cnt--;
已提交
5325 5326 5327 5328 5329 5330 5331
	}

	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
5332 5333 5334
		if (piocb->vport != vport)
			continue;

5335
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
5336
	}
J
James Smart 已提交
5337
	spin_unlock_irq(&phba->hbalock);
5338

5339 5340 5341
	/* Cancell all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
5342

已提交
5343 5344 5345
	return;
}

5346
/**
5347
 * lpfc_els_flush_all_cmd - Clean up all the outstanding els commands to a HBA
5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362
 * @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.
 **/
5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391
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);
5392 5393 5394 5395 5396

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

5397 5398 5399
	return;
}

5400
/**
5401
 * lpfc_send_els_failure_event - Posts an ELS command failure event
5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434
 * @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
5435
		lsrjt_event.command = (pcmd != NULL) ? *pcmd : 0;
5436 5437 5438 5439 5440 5441 5442
		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,
5443
			LPFC_NL_VENDOR_ID);
5444 5445 5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460
		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,
5461
			LPFC_NL_VENDOR_ID);
5462 5463 5464 5465 5466 5467
		return;
	}

}

/**
5468
 * lpfc_send_els_event - Posts unsolicited els event
5469 5470 5471 5472 5473 5474 5475 5476 5477 5478
 * @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,
5479
		    uint32_t *payload)
5480
{
5481 5482
	struct lpfc_els_event_header *els_data = NULL;
	struct lpfc_logo_event *logo_data = NULL;
5483 5484
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505
	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) {
5506
	case ELS_CMD_PLOGI:
5507
		els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
5508 5509
		break;
	case ELS_CMD_PRLO:
5510
		els_data->subcategory = LPFC_EVENT_PRLO_RCV;
5511 5512
		break;
	case ELS_CMD_ADISC:
5513 5514 5515 5516 5517 5518 5519
		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));
5520 5521
		break;
	default:
5522
		kfree(els_data);
5523 5524
		return;
	}
5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541
	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);
	}
5542 5543 5544 5545 5546

	return;
}


5547
/**
5548
 * lpfc_els_unsol_buffer - Process an unsolicited event data buffer
5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560
 * @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.
 **/
5561 5562
static void
lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5563
		      struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
已提交
5564
{
5565
	struct Scsi_Host  *shost;
已提交
5566 5567
	struct lpfc_nodelist *ndlp;
	struct ls_rjt stat;
5568
	uint32_t *payload;
J
James Smart 已提交
5569
	uint32_t cmd, did, newnode, rjt_err = 0;
5570
	IOCB_t *icmd = &elsiocb->iocb;
已提交
5571

5572
	if (!vport || !(elsiocb->context2))
已提交
5573
		goto dropit;
J
James Smart 已提交
5574

已提交
5575
	newnode = 0;
5576 5577
	payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
	cmd = *payload;
5578
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
5579
		lpfc_post_buffer(phba, pring, 1);
已提交
5580

J
James Smart 已提交
5581 5582 5583 5584 5585
	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
5586
		goto dropit;
J
James Smart 已提交
5587
	}
已提交
5588 5589

	/* Check to see if link went down during discovery */
5590
	if (lpfc_els_chk_latt(vport))
已提交
5591 5592
		goto dropit;

5593
	/* Ignore traffic received during vport shutdown. */
5594 5595 5596
	if (vport->load_flag & FC_UNLOADING)
		goto dropit;

J
James Smart 已提交
5597
	ndlp = lpfc_findnode_did(vport, did);
5598
	if (!ndlp) {
已提交
5599
		/* Cannot find existing Fabric ndlp, so allocate a new one */
5600
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5601
		if (!ndlp)
已提交
5602 5603
			goto dropit;

J
James Smart 已提交
5604
		lpfc_nlp_init(vport, ndlp, did);
5605
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
已提交
5606
		newnode = 1;
5607
		if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
已提交
5608
			ndlp->nlp_type |= NLP_FABRIC;
5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623 5624
	} 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;
5625
	}
已提交
5626 5627

	phba->fc_stat.elsRcvFrame++;
5628

5629
	elsiocb->context1 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
5630
	elsiocb->vport = vport;
已提交
5631 5632 5633 5634 5635

	if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
		cmd &= ELS_CMD_MASK;
	}
	/* ELS command <elsCmd> received from NPORT <did> */
5636 5637 5638
	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
5639 5640
	switch (cmd) {
	case ELS_CMD_PLOGI:
J
James Smart 已提交
5641 5642 5643 5644
		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
5645
		phba->fc_stat.elsRcvPLOGI++;
J
James Smart 已提交
5646 5647
		ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);

5648
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5649
		if (vport->port_state < LPFC_DISC_AUTH) {
5650 5651 5652 5653 5654 5655 5656 5657 5658
			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
5659
		}
5660 5661 5662 5663 5664 5665

		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
5666 5667
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PLOGI);
J
James Smart 已提交
5668

已提交
5669 5670
		break;
	case ELS_CMD_FLOGI:
J
James Smart 已提交
5671 5672 5673 5674
		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
5675
		phba->fc_stat.elsRcvFLOGI++;
5676
		lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
5677
		if (newnode)
5678
			lpfc_nlp_put(ndlp);
已提交
5679 5680
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
5681 5682 5683 5684
		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
5685
		phba->fc_stat.elsRcvLOGO++;
5686
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5687
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5688
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5689 5690
			break;
		}
J
James Smart 已提交
5691
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
已提交
5692 5693
		break;
	case ELS_CMD_PRLO:
J
James Smart 已提交
5694 5695 5696 5697
		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
5698
		phba->fc_stat.elsRcvPRLO++;
5699
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5700
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5701
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5702 5703
			break;
		}
J
James Smart 已提交
5704
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
已提交
5705 5706 5707
		break;
	case ELS_CMD_RSCN:
		phba->fc_stat.elsRcvRSCN++;
5708
		lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
5709
		if (newnode)
5710
			lpfc_nlp_put(ndlp);
已提交
5711 5712
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
5713 5714 5715 5716
		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);

5717
		lpfc_send_els_event(vport, ndlp, payload);
已提交
5718
		phba->fc_stat.elsRcvADISC++;
J
James Smart 已提交
5719
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5720
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5721 5722
			break;
		}
J
James Smart 已提交
5723 5724
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_ADISC);
已提交
5725 5726
		break;
	case ELS_CMD_PDISC:
J
James Smart 已提交
5727 5728 5729 5730
		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
5731
		phba->fc_stat.elsRcvPDISC++;
J
James Smart 已提交
5732
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5733
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5734 5735
			break;
		}
J
James Smart 已提交
5736 5737
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PDISC);
已提交
5738 5739
		break;
	case ELS_CMD_FARPR:
J
James Smart 已提交
5740 5741 5742 5743
		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
5744
		phba->fc_stat.elsRcvFARPR++;
J
James Smart 已提交
5745
		lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
已提交
5746 5747
		break;
	case ELS_CMD_FARP:
J
James Smart 已提交
5748 5749 5750 5751
		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
5752
		phba->fc_stat.elsRcvFARP++;
J
James Smart 已提交
5753
		lpfc_els_rcv_farp(vport, elsiocb, ndlp);
已提交
5754 5755
		break;
	case ELS_CMD_FAN:
J
James Smart 已提交
5756 5757 5758 5759
		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
5760
		phba->fc_stat.elsRcvFAN++;
J
James Smart 已提交
5761
		lpfc_els_rcv_fan(vport, elsiocb, ndlp);
已提交
5762 5763
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
5764 5765 5766 5767
		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
5768
		phba->fc_stat.elsRcvPRLI++;
J
James Smart 已提交
5769
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5770
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5771 5772
			break;
		}
J
James Smart 已提交
5773
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
已提交
5774
		break;
5775
	case ELS_CMD_LIRR:
J
James Smart 已提交
5776 5777 5778 5779
		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);

5780
		phba->fc_stat.elsRcvLIRR++;
J
James Smart 已提交
5781
		lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
5782
		if (newnode)
5783
			lpfc_nlp_put(ndlp);
5784 5785
		break;
	case ELS_CMD_RPS:
J
James Smart 已提交
5786 5787 5788 5789
		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);

5790
		phba->fc_stat.elsRcvRPS++;
J
James Smart 已提交
5791
		lpfc_els_rcv_rps(vport, elsiocb, ndlp);
5792
		if (newnode)
5793
			lpfc_nlp_put(ndlp);
5794 5795
		break;
	case ELS_CMD_RPL:
J
James Smart 已提交
5796 5797 5798 5799
		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);

5800
		phba->fc_stat.elsRcvRPL++;
J
James Smart 已提交
5801
		lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
5802
		if (newnode)
5803
			lpfc_nlp_put(ndlp);
5804
		break;
已提交
5805
	case ELS_CMD_RNID:
J
James Smart 已提交
5806 5807 5808 5809
		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
5810
		phba->fc_stat.elsRcvRNID++;
J
James Smart 已提交
5811
		lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
5812
		if (newnode)
5813
			lpfc_nlp_put(ndlp);
已提交
5814
		break;
5815 5816 5817 5818 5819 5820 5821 5822 5823 5824
	case ELS_CMD_RRQ:
		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
			"RCV RRQ:         did:x%x/ste:x%x flg:x%x",
			did, vport->port_state, ndlp->nlp_flag);

		phba->fc_stat.elsRcvRRQ++;
		lpfc_els_rcv_rrq(vport, elsiocb, ndlp);
		if (newnode)
			lpfc_nlp_put(ndlp);
		break;
已提交
5825
	default:
J
James Smart 已提交
5826 5827 5828 5829
		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
5830
		/* Unsupported ELS command, reject */
J
James Smart 已提交
5831
		rjt_err = LSRJT_INVALID_CMD;
已提交
5832 5833

		/* Unknown ELS command <elsCmd> received from NPORT <did> */
5834 5835 5836
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0115 Unknown ELS command x%x "
				 "received from NPORT x%x\n", cmd, did);
5837
		if (newnode)
5838
			lpfc_nlp_put(ndlp);
已提交
5839 5840 5841 5842 5843
		break;
	}

	/* check if need to LS_RJT received ELS cmd */
	if (rjt_err) {
5844
		memset(&stat, 0, sizeof(stat));
J
James Smart 已提交
5845
		stat.un.b.lsRjtRsnCode = rjt_err;
5846
		stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
J
James Smart 已提交
5847 5848
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
			NULL);
已提交
5849 5850
	}

5851 5852
	lpfc_nlp_put(elsiocb->context1);
	elsiocb->context1 = NULL;
5853 5854 5855
	return;

dropit:
5856
	if (vport && !(vport->load_flag & FC_UNLOADING))
5857 5858
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
			"0111 Dropping received ELS cmd "
5859
			"Data: x%x x%x x%x\n",
5860
			icmd->ulpStatus, icmd->un.ulpWord[4], icmd->ulpTimeout);
5861 5862 5863
	phba->fc_stat.elsRcvDrop++;
}

5864
/**
5865
 * lpfc_find_vport_by_vpid - Find a vport on a HBA through vport identifier
5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876
 * @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.
 **/
5877
struct lpfc_vport *
5878 5879 5880
lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
{
	struct lpfc_vport *vport;
5881
	unsigned long flags;
5882

5883
	spin_lock_irqsave(&phba->hbalock, flags);
5884
	list_for_each_entry(vport, &phba->port_list, listentry) {
5885 5886
		if (vport->vpi == vpi) {
			spin_unlock_irqrestore(&phba->hbalock, flags);
5887
			return vport;
5888
		}
5889
	}
5890
	spin_unlock_irqrestore(&phba->hbalock, flags);
5891 5892
	return NULL;
}
5893

5894
/**
5895
 * lpfc_els_unsol_event - Process an unsolicited event from an els sli ring
5896 5897 5898 5899 5900 5901 5902 5903 5904 5905
 * @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.
 **/
5906 5907 5908 5909 5910 5911 5912
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;
5913 5914 5915
	struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
	struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;

5916
	elsiocb->context1 = NULL;
5917 5918
	elsiocb->context2 = NULL;
	elsiocb->context3 = NULL;
5919

5920 5921 5922 5923
	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) {
5924 5925
		phba->fc_stat.NoRcvBuf++;
		/* Not enough posted buffers; Try posting more buffers */
5926
		if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
5927
			lpfc_post_buffer(phba, pring, 0);
5928 5929 5930
		return;
	}

5931 5932 5933 5934 5935
	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;
5936 5937 5938
		else
			vport = lpfc_find_vport_by_vpid(phba,
				icmd->unsli3.rcvsli3.vpi - phba->vpi_base);
5939
	}
5940 5941 5942
	/* If there are no BDEs associated
	 * with this IOCB, there is nothing to do.
	 */
5943 5944 5945
	if (icmd->ulpBdeCount == 0)
		return;

5946 5947 5948
	/* type of ELS cmd is first 32bit word
	 * in packet
	 */
5949
	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
5950
		elsiocb->context2 = bdeBuf1;
5951 5952 5953
	} else {
		paddr = getPaddr(icmd->un.cont64[0].addrHigh,
				 icmd->un.cont64[0].addrLow);
5954 5955
		elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
							     paddr);
5956 5957
	}

5958 5959 5960 5961 5962
	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
5963
	if (elsiocb->context2) {
5964 5965
		lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
		elsiocb->context2 = NULL;
已提交
5966
	}
5967 5968

	/* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
5969
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
5970
	    icmd->ulpBdeCount == 2) {
5971 5972
		elsiocb->context2 = bdeBuf2;
		lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5973 5974
		/* free mp if we are done with it */
		if (elsiocb->context2) {
5975 5976 5977 5978 5979 5980
			lpfc_in_buf_free(phba, elsiocb->context2);
			elsiocb->context2 = NULL;
		}
	}
}

5981
/**
5982
 * lpfc_do_scr_ns_plogi - Issue a plogi to the name server for scr
5983 5984 5985 5986 5987 5988 5989 5990 5991 5992 5993
 * @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.
 **/
5994 5995 5996 5997 5998 5999 6000 6001 6002 6003 6004 6005 6006 6007
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);
6008 6009
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					 "0251 NameServer login: no memory\n");
6010 6011 6012
			return;
		}
		lpfc_nlp_init(vport, ndlp, NameServer_DID);
6013 6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024
	} 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;
		}
6025
	}
6026
	ndlp->nlp_type |= NLP_FABRIC;
6027 6028 6029 6030 6031

	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);
6032 6033
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0252 Cannot issue NameServer login\n");
6034 6035 6036
		return;
	}

6037
	if (vport->cfg_fdmi_on) {
6038 6039 6040 6041 6042
		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;
6043 6044
			lpfc_nlp_set_state(vport, ndlp_fdmi,
				NLP_STE_PLOGI_ISSUE);
6045 6046 6047 6048 6049 6050 6051
			lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
					     0);
		}
	}
	return;
}

6052
/**
6053
 * lpfc_cmpl_reg_new_vport - Completion callback function to register new vport
6054 6055 6056 6057 6058 6059 6060 6061 6062 6063
 * @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).
 **/
6064 6065 6066 6067 6068 6069
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;
6070
	MAILBOX_t *mb = &pmb->u.mb;
6071
	int rc;
6072

6073
	spin_lock_irq(shost->host_lock);
6074
	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
6075
	spin_unlock_irq(shost->host_lock);
6076 6077

	if (mb->mbxStatus) {
6078 6079 6080
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				 "0915 Register VPI failed: 0x%x\n",
				 mb->mbxStatus);
6081 6082 6083 6084

		switch (mb->mbxStatus) {
		case 0x11:	/* unsupported feature */
		case 0x9603:	/* max_vpi exceeded */
6085
		case 0x9602:	/* Link event since CLEAR_LA */
6086 6087 6088 6089 6090 6091 6092
			/* 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;
6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112
		/* 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;
			}

6113 6114 6115
		default:
			/* Try to recover from this error */
			lpfc_mbx_unreg_vpi(vport);
6116
			spin_lock_irq(shost->host_lock);
6117
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6118
			spin_unlock_irq(shost->host_lock);
J
James Smart 已提交
6119 6120
			if (vport->port_type == LPFC_PHYSICAL_PORT
				&& !(vport->fc_flag & FC_LOGO_RCVD_DID_CHNG))
6121 6122 6123
				lpfc_initial_flogi(vport);
			else
				lpfc_initial_fdisc(vport);
6124 6125 6126
			break;
		}
	} else {
6127
		spin_lock_irq(shost->host_lock);
6128
		vport->vpi_state |= LPFC_VPI_REGISTERED;
6129 6130
		spin_unlock_irq(shost->host_lock);
		if (vport == phba->pport) {
6131 6132
			if (phba->sli_rev < LPFC_SLI_REV4)
				lpfc_issue_fabric_reglogin(vport);
6133
			else {
6134 6135 6136 6137 6138 6139
				/*
				 * If the physical port is instantiated using
				 * FDISC, do not start vport discovery.
				 */
				if (vport->port_state != LPFC_FDISC)
					lpfc_start_fdiscs(phba);
6140 6141 6142
				lpfc_do_scr_ns_plogi(phba, vport);
			}
		} else
6143 6144
			lpfc_do_scr_ns_plogi(phba, vport);
	}
6145 6146 6147 6148 6149 6150

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

6151 6152 6153 6154
	mempool_free(pmb, phba->mbox_mem_pool);
	return;
}

6155
/**
6156
 * lpfc_register_new_vport - Register a new vport with a HBA
6157 6158 6159 6160 6161 6162 6163
 * @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.
 **/
6164
void
6165 6166 6167
lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
			struct lpfc_nodelist *ndlp)
{
6168
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6169 6170 6171 6172
	LPFC_MBOXQ_t *mbox;

	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (mbox) {
6173
		lpfc_reg_vpi(vport, mbox);
6174 6175 6176
		mbox->vport = vport;
		mbox->context2 = lpfc_nlp_get(ndlp);
		mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
6177
		if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
6178
		    == MBX_NOT_FINISHED) {
6179 6180 6181 6182
			/* mailbox command not success, decrement ndlp
			 * reference count for this command
			 */
			lpfc_nlp_put(ndlp);
6183 6184
			mempool_free(mbox, phba->mbox_mem_pool);

6185 6186
			lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				"0253 Register VPI: Can't send mbox\n");
6187
			goto mbox_err_exit;
6188 6189
		}
	} else {
6190 6191
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				 "0254 Register VPI: no memory\n");
6192
		goto mbox_err_exit;
6193
	}
6194 6195 6196 6197 6198 6199 6200 6201
	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;
6202 6203
}

6204
/**
6205
 * lpfc_cancel_all_vport_retry_delay_timer - Cancel all vport retry delay timer
6206 6207
 * @phba: pointer to lpfc hba data structure.
 *
6208
 * This routine cancels the retry delay timers to all the vports.
6209 6210
 **/
void
6211
lpfc_cancel_all_vport_retry_delay_timer(struct lpfc_hba *phba)
6212 6213 6214 6215
{
	struct lpfc_vport **vports;
	struct lpfc_nodelist *ndlp;
	uint32_t link_state;
6216
	int i;
6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233

	/* 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);
	}
6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251
}

/**
 * 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);
6252 6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289

	/* 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;
}

6290
/**
6291
 * lpfc_cmpl_els_fdisc - Completion function for fdisc iocb command
6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309
 * @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).
 **/
6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321
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;

6322 6323 6324 6325
	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);
6326 6327 6328 6329 6330 6331 6332 6333
	/* 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
6334 6335 6336 6337
	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);

6338
	if (irsp->ulpStatus) {
6339 6340 6341 6342 6343 6344

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

6345 6346 6347 6348
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
			goto out;
		/* FDISC failed */
6349
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
6350
				 "0126 FDISC failed. (%d/%d)\n",
6351
				 irsp->ulpStatus, irsp->un.ulpWord[4]);
6352 6353 6354
		goto fdisc_failed;
	}
	spin_lock_irq(shost->host_lock);
6355
	vport->fc_flag &= ~FC_VPORT_CVL_RCVD;
J
James Smart 已提交
6356
	vport->fc_flag &= ~FC_VPORT_LOGO_RCVD;
6357 6358 6359 6360
	vport->fc_flag |= FC_FABRIC;
	if (vport->phba->fc_topology == TOPOLOGY_LOOP)
		vport->fc_flag |=  FC_PUBLIC_LOOP;
	spin_unlock_irq(shost->host_lock);
6361

6362 6363 6364 6365 6366 6367 6368 6369 6370 6371 6372 6373 6374 6375
	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;
6376
			spin_lock_irq(shost->host_lock);
6377
			np->nlp_flag &= ~NLP_NPR_ADISC;
6378
			spin_unlock_irq(shost->host_lock);
6379
			lpfc_unreg_rpi(vport, np);
6380
		}
6381
		lpfc_cleanup_pending_mbox(vport);
6382 6383 6384
		lpfc_mbx_unreg_vpi(vport);
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
6385 6386
		if (phba->sli_rev == LPFC_SLI_REV4)
			vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
J
James Smart 已提交
6387 6388
		else
			vport->fc_flag |= FC_LOGO_RCVD_DID_CHNG;
6389
		spin_unlock_irq(shost->host_lock);
6390 6391
	}

6392 6393 6394
	if (vport->fc_flag & FC_VPORT_NEEDS_INIT_VPI)
		lpfc_issue_init_vpi(vport);
	else if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
6395 6396 6397 6398 6399 6400 6401 6402 6403
		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);
6404 6405 6406 6407
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

6408
/**
6409
 * lpfc_issue_els_fdisc - Issue a fdisc iocb command
6410 6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427
 * @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
6428
static int
6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440
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;

6441
	vport->port_state = LPFC_FDISC;
6442 6443 6444 6445 6446
	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);
6447 6448
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0255 Issue FDISC: no IOCB\n");
6449 6450 6451 6452 6453 6454 6455
		return 1;
	}

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

6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466
	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;
	}
6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 6491 6492 6493

	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
6494 6495 6496 6497
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FDISC:     did:x%x",
		did, 0, 0);

6498 6499 6500 6501
	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);
6502 6503
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0256 Issue FDISC: Cannot send IOCB\n");
6504 6505 6506 6507 6508 6509
		return 1;
	}
	lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
	return 0;
}

6510
/**
6511
 * lpfc_cmpl_els_npiv_logo - Completion function with vport logo
6512 6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523
 * @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.
 **/
6524 6525 6526 6527 6528
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
6529
	IOCB_t *irsp;
6530 6531
	struct lpfc_nodelist *ndlp;
	ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
J
James Smart 已提交
6532 6533 6534 6535 6536

	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);
6537 6538 6539

	lpfc_els_free_iocb(phba, cmdiocb);
	vport->unreg_vpi_cmpl = VPORT_ERROR;
6540 6541 6542

	/* Trigger the release of the ndlp after logo */
	lpfc_nlp_put(ndlp);
6543 6544
}

6545
/**
6546
 * lpfc_issue_els_npiv_logo - Issue a logo off a vport
6547 6548 6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560
 * @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
 **/
6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583 6584 6585 6586
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
6587 6588 6589 6590
	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);

6591 6592 6593 6594
	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);
6595 6596
	if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
	    IOCB_ERROR) {
6597 6598 6599 6600 6601 6602 6603 6604 6605
		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;
}

6606
/**
6607
 * lpfc_fabric_block_timeout - Handler function to the fabric block timer
6608 6609 6610 6611 6612 6613 6614 6615 6616
 * @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.
 **/
6617 6618 6619 6620 6621 6622
void
lpfc_fabric_block_timeout(unsigned long ptr)
{
	struct lpfc_hba  *phba = (struct lpfc_hba *) ptr;
	unsigned long iflags;
	uint32_t tmo_posted;
6623

6624 6625 6626 6627 6628 6629
	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);

6630 6631 6632
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
	return;
6633 6634
}

6635
/**
6636
 * lpfc_resume_fabric_iocbs - Issue a fabric iocb from driver internal list
6637 6638 6639 6640 6641 6642 6643 6644
 * @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.
 **/
6645 6646 6647 6648 6649 6650 6651 6652 6653 6654 6655
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);
6656
	/* Post any pending iocb to the SLI layer */
6657 6658 6659 6660
	if (atomic_read(&phba->fabric_iocb_count) == 0) {
		list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
				 list);
		if (iocb)
6661
			/* Increment fabric iocb count to hold the position */
6662 6663 6664 6665 6666 6667 6668 6669
			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
6670 6671 6672 6673
		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched1:   ste:x%x",
			iocb->vport->port_state, 0, 0);

6674
		ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687 6688 6689 6690 6691 6692

		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;
}

6693
/**
6694
 * lpfc_unblock_fabric_iocbs - Unblock issuing fabric iocb command
6695 6696 6697 6698 6699 6700 6701
 * @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.
 **/
6702 6703 6704 6705 6706 6707 6708 6709 6710
void
lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
{
	clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);

	lpfc_resume_fabric_iocbs(phba);
	return;
}

6711
/**
6712
 * lpfc_block_fabric_iocbs - Block issuing fabric iocb command
6713 6714 6715 6716 6717 6718 6719
 * @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.
 **/
6720 6721 6722 6723 6724 6725
static void
lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
{
	int blocked;

	blocked = test_and_set_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);
6726
	/* Start a timer to unblock fabric iocbs after 100ms */
6727 6728 6729 6730 6731 6732
	if (!blocked)
		mod_timer(&phba->fabric_block_timer, jiffies + HZ/10 );

	return;
}

6733
/**
6734
 * lpfc_cmpl_fabric_iocb - Completion callback function for fabric iocb
6735 6736 6737 6738 6739 6740 6741 6742 6743 6744 6745
 * @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.
 **/
6746 6747 6748 6749 6750 6751 6752 6753 6754 6755 6756 6757 6758 6759
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);
6760
			}
6761 6762 6763 6764 6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775 6776 6777 6778 6779 6780 6781 6782 6783 6784 6785 6786
			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)) {
6787 6788
		/* Post any pending iocbs to HBA */
		lpfc_resume_fabric_iocbs(phba);
6789 6790 6791
	}
}

6792
/**
6793
 * lpfc_issue_fabric_iocb - Issue a fabric iocb command
6794 6795 6796 6797 6798 6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815
 * @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
6816
static int
6817 6818 6819 6820 6821 6822 6823 6824 6825 6826 6827 6828 6829
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);

6830 6831 6832
	if (ready)
		/* Increment fabric iocb count to hold the position */
		atomic_inc(&phba->fabric_iocb_count);
6833 6834 6835 6836 6837 6838
	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
6839 6840 6841 6842
		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched2:   ste:x%x",
			iocb->vport->port_state, 0, 0);

6843
		ret = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, iocb, 0);
6844 6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859

		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;
}

6860
/**
6861
 * lpfc_fabric_abort_vport - Abort a vport's iocbs from driver fabric iocb list
6862 6863 6864 6865 6866 6867 6868 6869 6870
 * @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
6871
static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887
{
	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);

6888 6889 6890
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
6891 6892
}

6893
/**
6894
 * lpfc_fabric_abort_nport - Abort a ndlp's iocbs from driver fabric iocb list
6895 6896 6897 6898 6899 6900 6901 6902 6903
 * @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.
 **/
6904 6905 6906
void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
{
	LIST_HEAD(completions);
6907
	struct lpfc_hba  *phba = ndlp->phba;
6908 6909 6910 6911 6912 6913 6914 6915 6916
	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);
6917
		}
已提交
6918
	}
6919 6920
	spin_unlock_irq(&phba->hbalock);

6921 6922 6923
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
6924 6925
}

6926
/**
6927
 * lpfc_fabric_abort_hba - Abort all iocbs on driver fabric iocb list
6928 6929 6930 6931 6932 6933 6934 6935 6936
 * @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.
 **/
6937 6938 6939 6940 6941 6942 6943 6944
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);

6945 6946 6947
	/* Cancel all the IOCBs from the completions list */
	lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
			      IOERR_SLI_ABORTED);
已提交
6948
}
6949 6950 6951 6952 6953 6954 6955 6956 6957 6958 6959 6960 6961 6962 6963 6964

/**
 * 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;
6965
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6966

6967 6968
	spin_lock_irqsave(&phba->hbalock, iflag);
	spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
6969 6970 6971 6972 6973 6974
	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);
6975 6976
			sglq_entry->state = SGL_FREED;
			spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
6977
			spin_unlock_irqrestore(&phba->hbalock, iflag);
6978 6979 6980 6981

			/* Check if TXQ queue needs to be serviced */
			if (pring->txq_cnt)
				lpfc_worker_wake_up(phba);
6982 6983 6984
			return;
		}
	}
6985 6986 6987 6988 6989 6990 6991 6992 6993
	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;
6994
}