lpfc_els.c 208.5 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) 2004-2008 Emulex.  All rights reserved.           *
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 * EMULEX and SLI are trademarks of Emulex.                        *
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 * www.emulex.com                                                  *
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 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
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 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
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 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
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 *******************************************************************/
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/* See Fibre Channel protocol T11 FC-LS for details */
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#include <linux/blkdev.h>
#include <linux/pci.h>
#include <linux/interrupt.h>

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

#include "lpfc_hw.h"
#include "lpfc_sli.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);
static void lpfc_register_new_vport(struct lpfc_hba *phba,
				    struct lpfc_vport *vport,
				    struct lpfc_nodelist *ndlp);
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static int lpfc_max_els_tries = 3;

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/**
 * lpfc_els_chk_latt: Check host link attention event for a vport.
 * @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 ||
	    phba->link_state == LPFC_LINK_DOWN)
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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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/**
 * lpfc_prep_els_iocb: Allocate and prepare a lpfc iocb data structure.
 * @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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static 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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	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 */
		icmd->ulpContext = vport->vpi;
		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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/**
 * lpfc_issue_fabric_reglogin: Issue fabric registration login for a vport.
 * @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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static 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_login(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_cmpl_els_flogi_fabric: Completion function for flogi to a fabric port.
 * @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);
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	phba->fc_edtov = be32_to_cpu(sp->cmn.e_d_tov);
	if (sp->cmn.edtovResolution)	/* E_D_TOV ticks are in nanoseconds */
		phba->fc_edtov = (phba->fc_edtov + 999999) / 1000000;

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

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

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

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	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
		if (sp->cmn.response_multiple_NPort) {
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			lpfc_printf_vlog(vport, KERN_WARNING,
					 LOG_ELS | LOG_VPORT,
					 "1816 FLOGI NPIV supported, "
					 "response data 0x%x\n",
					 sp->cmn.response_multiple_NPort);
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			phba->link_flag |= LS_NPIV_FAB_SUPPORTED;
		} else {
			/* Because we asked f/w for NPIV it still expects us
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			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");
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			phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED;
		}
	}
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	if ((vport->fc_prevDID != vport->fc_myDID) &&
		!(vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)) {
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		/* 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) {
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			if (!NLP_CHK_NODE_ACT(np))
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				continue;
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			if ((np->nlp_state != NLP_STE_NPR_NODE) ||
				   !(np->nlp_flag & NLP_NPR_ADISC))
				continue;
			spin_lock_irq(shost->host_lock);
			np->nlp_flag &= ~NLP_NPR_ADISC;
			spin_unlock_irq(shost->host_lock);
			lpfc_unreg_rpi(vport, np);
		}
		if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
			lpfc_mbx_unreg_vpi(vport);
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			spin_lock_irq(shost->host_lock);
495
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
496
			spin_unlock_irq(shost->host_lock);
497 498
		}
	}
已提交
499

500
	lpfc_nlp_set_state(vport, ndlp, NLP_STE_REG_LOGIN_ISSUE);
已提交
501

502 503 504 505 506 507
	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED &&
	    vport->fc_flag & FC_VPORT_NEEDS_REG_VPI) {
		lpfc_register_new_vport(phba, vport, ndlp);
		return 0;
	}
	lpfc_issue_fabric_reglogin(vport);
已提交
508 509 510
	return 0;
}

511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530
/**
 * lpfc_cmpl_els_flogi_nport: Completion function for flogi to an N_Port.
 * @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
531
static int
J
James Smart 已提交
532 533
lpfc_cmpl_els_flogi_nport(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
			  struct serv_parm *sp)
已提交
534
{
J
James Smart 已提交
535 536
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
537 538 539
	LPFC_MBOXQ_t *mbox;
	int rc;

J
James Smart 已提交
540 541 542
	spin_lock_irq(shost->host_lock);
	vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
	spin_unlock_irq(shost->host_lock);
已提交
543 544 545

	phba->fc_edtov = FF_DEF_EDTOV;
	phba->fc_ratov = FF_DEF_RATOV;
J
James Smart 已提交
546
	rc = memcmp(&vport->fc_portname, &sp->portName,
547
		    sizeof(vport->fc_portname));
已提交
548 549
	if (rc >= 0) {
		/* This side will initiate the PLOGI */
J
James Smart 已提交
550 551 552
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_PT2PT_PLOGI;
		spin_unlock_irq(shost->host_lock);
已提交
553 554 555 556 557 558 559 560

		/*
		 * 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
561
			vport->fc_myDID = PT2PT_LocalID;
已提交
562 563 564 565 566 567 568 569

		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;
570
		mbox->vport = vport;
571
		rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
已提交
572 573 574 575
		if (rc == MBX_NOT_FINISHED) {
			mempool_free(mbox, phba->mbox_mem_pool);
			goto fail;
		}
576 577 578
		/* Decrement ndlp reference count indicating that ndlp can be
		 * safely released when other references to it are done.
		 */
579
		lpfc_nlp_put(ndlp);
已提交
580

J
James Smart 已提交
581
		ndlp = lpfc_findnode_did(vport, PT2PT_RemoteID);
已提交
582 583 584 585 586 587 588 589
		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
590
			lpfc_nlp_init(vport, ndlp, PT2PT_RemoteID);
591 592 593 594 595
		} else if (!NLP_CHK_NODE_ACT(ndlp)) {
			ndlp = lpfc_enable_node(vport, ndlp,
						NLP_STE_UNUSED_NODE);
			if(!ndlp)
				goto fail;
已提交
596 597 598
		}

		memcpy(&ndlp->nlp_portname, &sp->portName,
J
James Smart 已提交
599
		       sizeof(struct lpfc_name));
已提交
600
		memcpy(&ndlp->nlp_nodename, &sp->nodeName,
J
James Smart 已提交
601
		       sizeof(struct lpfc_name));
602
		/* Set state will put ndlp onto node list if not already done */
J
James Smart 已提交
603 604
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
		spin_lock_irq(shost->host_lock);
已提交
605
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
606
		spin_unlock_irq(shost->host_lock);
607 608 609 610 611
	} 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.
		 */
612
		lpfc_nlp_put(ndlp);
已提交
613

614 615 616
	/* If we are pt2pt with another NPort, force NPIV off! */
	phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED;

J
James Smart 已提交
617 618 619
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_PT2PT;
	spin_unlock_irq(shost->host_lock);
已提交
620 621

	/* Start discovery - this should just do CLEAR_LA */
J
James Smart 已提交
622
	lpfc_disc_start(vport);
已提交
623
	return 0;
624
fail:
已提交
625 626 627
	return -ENXIO;
}

628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650
/**
 * lpfc_cmpl_els_flogi: Completion callback function for flogi.
 * @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
651
static void
652 653
lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
654
{
J
James Smart 已提交
655 656
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
657 658 659 660 661 662 663
	IOCB_t *irsp = &rspiocb->iocb;
	struct lpfc_nodelist *ndlp = cmdiocb->context1;
	struct lpfc_dmabuf *pcmd = cmdiocb->context2, *prsp;
	struct serv_parm *sp;
	int rc;

	/* Check to see if link went down during discovery */
J
James Smart 已提交
664
	if (lpfc_els_chk_latt(vport)) {
665 666 667
		/* One additional decrement on node reference count to
		 * trigger the release of the node
		 */
668
		lpfc_nlp_put(ndlp);
已提交
669 670 671
		goto out;
	}

J
James Smart 已提交
672 673 674 675 676
	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
677 678
	if (irsp->ulpStatus) {
		/* Check for retry */
J
James Smart 已提交
679
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
680
			goto out;
J
James Smart 已提交
681

已提交
682
		/* FLOGI failed, so there is no fabric */
J
James Smart 已提交
683 684 685
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP);
		spin_unlock_irq(shost->host_lock);
已提交
686

687
		/* If private loop, then allow max outstanding els to be
已提交
688 689 690 691
		 * LPFC_MAX_DISC_THREADS (32). Scanning in the case of no
		 * alpa map would take too long otherwise.
		 */
		if (phba->alpa_map[0] == 0) {
692
			vport->cfg_discovery_threads = LPFC_MAX_DISC_THREADS;
已提交
693 694 695
		}

		/* FLOGI failure */
696 697 698 699 700
		lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
				 "0100 FLOGI failure Data: x%x x%x "
				 "x%x\n",
				 irsp->ulpStatus, irsp->un.ulpWord[4],
				 irsp->ulpTimeout);
已提交
701 702 703 704 705 706 707 708 709 710 711 712
		goto flogifail;
	}

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

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

	/* FLOGI completes successfully */
713 714 715 716 717
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0101 FLOGI completes sucessfully "
			 "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
718

J
James Smart 已提交
719
	if (vport->port_state == LPFC_FLOGI) {
已提交
720 721 722 723 724
		/*
		 * 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
725
			rc = lpfc_cmpl_els_flogi_fabric(vport, ndlp, sp, irsp);
已提交
726
		else
J
James Smart 已提交
727
			rc = lpfc_cmpl_els_flogi_nport(vport, ndlp, sp);
已提交
728 729 730 731 732 733

		if (!rc)
			goto out;
	}

flogifail:
734
	lpfc_nlp_put(ndlp);
已提交
735

J
James Smart 已提交
736
	if (!lpfc_error_lost_link(irsp)) {
已提交
737
		/* FLOGI failed, so just use loop map to make discovery list */
J
James Smart 已提交
738
		lpfc_disc_list_loopmap(vport);
已提交
739 740

		/* Start discovery */
J
James Smart 已提交
741
		lpfc_disc_start(vport);
742 743 744 745 746 747
	} 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
748 749 750 751 752
	}
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774
/**
 * lpfc_issue_els_flogi: Issue an flogi iocb command for a vport.
 * @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
775
static int
J
James Smart 已提交
776
lpfc_issue_els_flogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
777 778
		     uint8_t retry)
{
J
James Smart 已提交
779
	struct lpfc_hba  *phba = vport->phba;
已提交
780 781 782 783 784 785 786 787 788 789 790
	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];

791
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
J
James Smart 已提交
792 793
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_FLOGI);
794

795
	if (!elsiocb)
796
		return 1;
已提交
797 798 799 800 801 802

	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;
803 804
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
805 806 807 808 809 810 811 812 813 814 815 816 817
	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;

818 819 820 821 822 823 824 825
	if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) {
		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
826 827 828 829 830
	if (phba->fc_topology != TOPOLOGY_LOOP) {
		icmd->un.elsreq64.myID = 0;
		icmd->un.elsreq64.fl = 1;
	}

已提交
831 832
	tmo = phba->fc_ratov;
	phba->fc_ratov = LPFC_DISC_FLOGI_TMO;
J
James Smart 已提交
833
	lpfc_set_disctmo(vport);
已提交
834 835 836 837
	phba->fc_ratov = tmo;

	phba->fc_stat.elsXmitFLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_flogi;
J
James Smart 已提交
838 839 840 841 842

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

843
	rc = lpfc_issue_fabric_iocb(phba, elsiocb);
已提交
844 845
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
846
		return 1;
已提交
847
	}
848
	return 0;
已提交
849 850
}

851 852 853 854 855 856 857 858 859 860 861 862 863 864
/**
 * lpfc_els_abort_flogi: Abort all outstanding flogi iocbs.
 * @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
 *   0 - Sucessfully issued abort iocb on all outstanding flogis (Always 0)
 **/
已提交
865
int
J
James Smart 已提交
866
lpfc_els_abort_flogi(struct lpfc_hba *phba)
已提交
867 868 869 870 871 872 873 874
{
	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,
875 876
			"0201 Abort outstanding I/O on NPort x%x\n",
			Fabric_DID);
已提交
877 878 879 880 881 882 883

	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
884
	spin_lock_irq(&phba->hbalock);
已提交
885 886
	list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
		icmd = &iocb->iocb;
J
James Smart 已提交
887 888
		if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR &&
		    icmd->un.elsreq64.bdl.ulpIoTag32) {
已提交
889
			ndlp = (struct lpfc_nodelist *)(iocb->context1);
890 891
			if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
			    (ndlp->nlp_DID == Fabric_DID))
892
				lpfc_sli_issue_abort_iotag(phba, pring, iocb);
已提交
893 894
		}
	}
J
James Smart 已提交
895
	spin_unlock_irq(&phba->hbalock);
已提交
896 897 898 899

	return 0;
}

900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915
/**
 * lpfc_initial_flogi: Issue an initial fabric login for a vport.
 * @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
916
int
J
James Smart 已提交
917
lpfc_initial_flogi(struct lpfc_vport *vport)
已提交
918
{
J
James Smart 已提交
919
	struct lpfc_hba *phba = vport->phba;
已提交
920 921
	struct lpfc_nodelist *ndlp;

922 923 924
	vport->port_state = LPFC_FLOGI;
	lpfc_set_disctmo(vport);

925
	/* First look for the Fabric ndlp */
J
James Smart 已提交
926
	ndlp = lpfc_findnode_did(vport, Fabric_DID);
927
	if (!ndlp) {
已提交
928
		/* Cannot find existing Fabric ndlp, so allocate a new one */
929 930 931
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
		if (!ndlp)
			return 0;
J
James Smart 已提交
932
		lpfc_nlp_init(vport, ndlp, Fabric_DID);
933 934 935 936 937 938 939
		/* 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
940
	}
941

942
	if (lpfc_issue_els_flogi(vport, ndlp, 0))
943 944 945
		/* This decrement of reference count to node shall kick off
		 * the release of the node.
		 */
946
		lpfc_nlp_put(ndlp);
947

948
	return 1;
已提交
949 950
}

951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966
/**
 * lpfc_initial_fdisc: Issue an initial fabric discovery for a vport.
 * @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
 **/
967 968 969 970 971 972 973 974 975 976 977 978 979 980
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);
981 982 983 984 985 986 987
		/* 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;
988
	}
989

990
	if (lpfc_issue_els_fdisc(vport, ndlp, 0)) {
991 992 993
		/* decrement node reference count to trigger the release of
		 * the node.
		 */
994
		lpfc_nlp_put(ndlp);
995
		return 0;
996 997 998
	}
	return 1;
}
999

1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010
/**
 * lpfc_more_plogi: Check and issue remaining plogis for a vport.
 * @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.
 **/
1011
void
J
James Smart 已提交
1012
lpfc_more_plogi(struct lpfc_vport *vport)
已提交
1013 1014 1015
{
	int sentplogi;

J
James Smart 已提交
1016 1017
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1018 1019

	/* Continue discovery with <num_disc_nodes> PLOGIs to go */
1020 1021 1022 1023 1024
	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
1025
	/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1026 1027 1028 1029
	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
1030 1031 1032
	return;
}

1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063
/**
 * lpfc_plogi_confirm_nport: Confirm pologi wwpn matches stored ndlp.
 * @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
 **/
1064
static struct lpfc_nodelist *
1065
lpfc_plogi_confirm_nport(struct lpfc_hba *phba, uint32_t *prsp,
1066 1067
			 struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
1068
	struct lpfc_vport    *vport = ndlp->vport;
1069
	struct lpfc_nodelist *new_ndlp;
1070 1071
	struct lpfc_rport_data *rdata;
	struct fc_rport *rport;
1072
	struct serv_parm *sp;
1073
	uint8_t  name[sizeof(struct lpfc_name)];
1074
	uint32_t rc, keepDID = 0;
1075

J
James Smart 已提交
1076 1077 1078 1079 1080 1081
	/* 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;

1082
	sp = (struct serv_parm *) ((uint8_t *) prsp + sizeof(uint32_t));
1083
	memset(name, 0, sizeof(struct lpfc_name));
1084

1085
	/* Now we find out if the NPort we are logging into, matches the WWPN
1086 1087
	 * we have for that ndlp. If not, we have some work to do.
	 */
J
James Smart 已提交
1088
	new_ndlp = lpfc_findnode_wwpn(vport, &sp->portName);
1089

1090
	if (new_ndlp == ndlp && NLP_CHK_NODE_ACT(new_ndlp))
1091 1092 1093
		return ndlp;

	if (!new_ndlp) {
J
James Smart 已提交
1094 1095
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
1096 1097
		if (!rc)
			return ndlp;
1098 1099 1100
		new_ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_ATOMIC);
		if (!new_ndlp)
			return ndlp;
J
James Smart 已提交
1101
		lpfc_nlp_init(vport, new_ndlp, ndlp->nlp_DID);
1102
	} else if (!NLP_CHK_NODE_ACT(new_ndlp)) {
1103 1104 1105 1106
		rc = memcmp(&ndlp->nlp_portname, name,
			    sizeof(struct lpfc_name));
		if (!rc)
			return ndlp;
1107 1108 1109 1110
		new_ndlp = lpfc_enable_node(vport, new_ndlp,
						NLP_STE_UNUSED_NODE);
		if (!new_ndlp)
			return ndlp;
1111 1112 1113
		keepDID = new_ndlp->nlp_DID;
	} else
		keepDID = new_ndlp->nlp_DID;
1114

J
James Smart 已提交
1115
	lpfc_unreg_rpi(vport, new_ndlp);
1116
	new_ndlp->nlp_DID = ndlp->nlp_DID;
1117
	new_ndlp->nlp_prev_state = ndlp->nlp_prev_state;
1118 1119 1120 1121 1122

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

1123
	/* Set state will put new_ndlp on to node list if not already done */
J
James Smart 已提交
1124
	lpfc_nlp_set_state(vport, new_ndlp, ndlp->nlp_state);
1125

J
James Smart 已提交
1126
	/* Move this back to NPR state */
1127 1128 1129 1130
	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.
		 */
1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143

		/* 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;
		}
1144 1145 1146 1147 1148 1149 1150 1151 1152
		/* 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);
		}
1153

1154 1155
		/* Two ndlps cannot have the same did on the nodelist */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1156
		lpfc_drop_node(vport, ndlp);
1157
	}
1158
	else {
J
James Smart 已提交
1159
		lpfc_unreg_rpi(vport, ndlp);
1160 1161
		/* Two ndlps cannot have the same did */
		ndlp->nlp_DID = keepDID;
J
James Smart 已提交
1162
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
1163
	}
1164 1165 1166
	return new_ndlp;
}

1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177
/**
 * lpfc_end_rscn: Check and handle more rscn for a vport.
 * @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.
 **/
1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198
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);
		}
	}
}

1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218
/**
 * lpfc_cmpl_els_plogi: Completion callback function for plogi.
 * @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
1219
static void
J
James Smart 已提交
1220 1221
lpfc_cmpl_els_plogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1222
{
J
James Smart 已提交
1223 1224
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1225 1226
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
1227
	struct lpfc_dmabuf *prsp;
已提交
1228 1229 1230 1231 1232 1233
	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
1234 1235 1236 1237 1238
	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
1239
	ndlp = lpfc_findnode_did(vport, irsp->un.elsreq64.remoteID);
1240
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1241 1242 1243 1244 1245 1246
		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);
1247
		goto out;
1248
	}
已提交
1249 1250 1251 1252

	/* 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
1253
	spin_lock_irq(shost->host_lock);
已提交
1254
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1255
	ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
1256
	spin_unlock_irq(shost->host_lock);
已提交
1257 1258 1259
	rc   = 0;

	/* PLOGI completes to NPort <nlp_DID> */
1260 1261 1262 1263 1264
	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
1265
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1266 1267
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1268
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1269
		spin_unlock_irq(shost->host_lock);
已提交
1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281
		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
1282
				spin_lock_irq(shost->host_lock);
已提交
1283
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1284
				spin_unlock_irq(shost->host_lock);
已提交
1285 1286 1287 1288 1289
			}
			goto out;
		}
		/* PLOGI failed */
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1290
		if (lpfc_error_lost_link(irsp))
1291
			rc = NLP_STE_FREED_NODE;
1292
		else
J
James Smart 已提交
1293
			rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1294
						     NLP_EVT_CMPL_PLOGI);
已提交
1295 1296
	} else {
		/* Good status, call state machine */
1297
		prsp = list_entry(((struct lpfc_dmabuf *)
1298 1299 1300
				   cmdiocb->context2)->list.next,
				  struct lpfc_dmabuf, list);
		ndlp = lpfc_plogi_confirm_nport(phba, prsp->virt, ndlp);
J
James Smart 已提交
1301
		rc = lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1302
					     NLP_EVT_CMPL_PLOGI);
已提交
1303 1304
	}

J
James Smart 已提交
1305
	if (disc && vport->num_disc_nodes) {
已提交
1306
		/* Check to see if there are more PLOGIs to be sent */
J
James Smart 已提交
1307
		lpfc_more_plogi(vport);
已提交
1308

J
James Smart 已提交
1309 1310 1311 1312
		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
1313

J
James Smart 已提交
1314
			lpfc_can_disctmo(vport);
1315
			lpfc_end_rscn(vport);
已提交
1316 1317 1318 1319 1320 1321 1322 1323
		}
	}

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

1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344
/**
 * lpfc_issue_els_plogi: Issue an plogi iocb command for a vport.
 * @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
1345
int
J
James Smart 已提交
1346
lpfc_issue_els_plogi(struct lpfc_vport *vport, uint32_t did, uint8_t retry)
已提交
1347
{
J
James Smart 已提交
1348
	struct lpfc_hba  *phba = vport->phba;
已提交
1349 1350
	struct serv_parm *sp;
	IOCB_t *icmd;
1351
	struct lpfc_nodelist *ndlp;
已提交
1352 1353 1354 1355 1356
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
1357
	int ret;
已提交
1358 1359 1360 1361

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

1362
	ndlp = lpfc_findnode_did(vport, did);
1363 1364
	if (ndlp && !NLP_CHK_NODE_ACT(ndlp))
		ndlp = NULL;
1365

1366
	/* If ndlp is not NULL, we will bump the reference count on it */
1367
	cmdsize = (sizeof(uint32_t) + sizeof(struct serv_parm));
1368
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, did,
J
James Smart 已提交
1369
				     ELS_CMD_PLOGI);
1370 1371
	if (!elsiocb)
		return 1;
已提交
1372 1373 1374 1375 1376 1377

	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;
1378 1379
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
已提交
1380 1381 1382 1383 1384 1385 1386 1387
	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
1388 1389 1390 1391
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PLOGI:     did:x%x",
		did, 0, 0);

已提交
1392 1393
	phba->fc_stat.elsXmitPLOGI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_plogi;
1394 1395 1396
	ret = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);

	if (ret == IOCB_ERROR) {
已提交
1397
		lpfc_els_free_iocb(phba, elsiocb);
1398
		return 1;
已提交
1399
	}
1400
	return 0;
已提交
1401 1402
}

1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415
/**
 * lpfc_cmpl_els_prli: Completion callback function for prli.
 * @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
1416
static void
J
James Smart 已提交
1417 1418
lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
1419
{
J
James Smart 已提交
1420 1421
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1422 1423 1424 1425 1426 1427 1428 1429 1430 1431
	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
1432
	spin_lock_irq(shost->host_lock);
已提交
1433
	ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1434
	spin_unlock_irq(shost->host_lock);
已提交
1435

J
James Smart 已提交
1436 1437 1438 1439
	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
1440
	/* PRLI completes to NPort <nlp_DID> */
1441 1442 1443 1444 1445
	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
1446

J
James Smart 已提交
1447
	vport->fc_prli_sent--;
已提交
1448
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1449
	if (lpfc_els_chk_latt(vport))
已提交
1450 1451 1452 1453 1454 1455 1456 1457 1458 1459
		goto out;

	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
			/* ELS command is being retried */
			goto out;
		}
		/* PRLI failed */
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1460
		if (lpfc_error_lost_link(irsp))
已提交
1461
			goto out;
1462
		else
J
James Smart 已提交
1463
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1464
						NLP_EVT_CMPL_PRLI);
1465
	} else
已提交
1466
		/* Good status, call state machine */
J
James Smart 已提交
1467
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1468
					NLP_EVT_CMPL_PRLI);
已提交
1469 1470 1471 1472 1473
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494
/**
 * lpfc_issue_els_prli: Issue a prli iocb command for a vport.
 * @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
1495
int
J
James Smart 已提交
1496
lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1497 1498
		    uint8_t retry)
{
J
James Smart 已提交
1499 1500
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba *phba = vport->phba;
已提交
1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511
	PRLI *npr;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;

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

1512
	cmdsize = (sizeof(uint32_t) + sizeof(PRLI));
J
James Smart 已提交
1513 1514
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_PRLI);
1515
	if (!elsiocb)
1516
		return 1;
已提交
1517 1518 1519 1520 1521

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

	/* For PRLI request, remainder of payload is service parameters */
1522
	memset(pcmd, 0, (sizeof(PRLI) + sizeof(uint32_t)));
已提交
1523
	*((uint32_t *) (pcmd)) = ELS_CMD_PRLI;
1524
	pcmd += sizeof(uint32_t);
已提交
1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543

	/* 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
1544 1545 1546 1547
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue PRLI:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
1548 1549
	phba->fc_stat.elsXmitPRLI++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
J
James Smart 已提交
1550
	spin_lock_irq(shost->host_lock);
已提交
1551
	ndlp->nlp_flag |= NLP_PRLI_SND;
J
James Smart 已提交
1552
	spin_unlock_irq(shost->host_lock);
已提交
1553
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
J
James Smart 已提交
1554
		spin_lock_irq(shost->host_lock);
已提交
1555
		ndlp->nlp_flag &= ~NLP_PRLI_SND;
J
James Smart 已提交
1556
		spin_unlock_irq(shost->host_lock);
已提交
1557
		lpfc_els_free_iocb(phba, elsiocb);
1558
		return 1;
已提交
1559
	}
J
James Smart 已提交
1560
	vport->fc_prli_sent++;
1561
	return 0;
已提交
1562 1563
}

1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640
/**
 * lpfc_rscn_disc: Perform rscn discovery for a vport.
 * @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);
}

/**
 * lpfc_adisc_done: Complete the adisc phase of discovery.
 * @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) &&
	    !(vport->fc_flag & FC_RSCN_MODE)) {
		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);
}

1641 1642 1643 1644 1645 1646 1647 1648 1649
/**
 * lpfc_more_adisc: Issue more adisc as needed.
 * @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.
 **/
1650
void
J
James Smart 已提交
1651
lpfc_more_adisc(struct lpfc_vport *vport)
已提交
1652 1653 1654
{
	int sentadisc;

J
James Smart 已提交
1655 1656
	if (vport->num_disc_nodes)
		vport->num_disc_nodes--;
已提交
1657
	/* Continue discovery with <num_disc_nodes> ADISCs to go */
1658 1659 1660 1661 1662
	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
1663
	/* Check to see if there are more ADISCs to be sent */
J
James Smart 已提交
1664 1665 1666 1667
	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
1668
	}
1669 1670
	if (!vport->num_disc_nodes)
		lpfc_adisc_done(vport);
已提交
1671 1672 1673
	return;
}

1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689
/**
 * lpfc_cmpl_els_adisc: Completion callback function for adisc.
 * @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
1690
static void
J
James Smart 已提交
1691 1692
lpfc_cmpl_els_adisc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		    struct lpfc_iocbq *rspiocb)
已提交
1693
{
J
James Smart 已提交
1694 1695
	struct lpfc_vport *vport = cmdiocb->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
已提交
1696 1697
	IOCB_t *irsp;
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
1698
	int  disc;
已提交
1699 1700 1701 1702 1703 1704 1705

	/* 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
1706 1707 1708 1709 1710
	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
1711 1712 1713
	/* 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
1714
	spin_lock_irq(shost->host_lock);
已提交
1715
	disc = (ndlp->nlp_flag & NLP_NPR_2B_DISC);
1716
	ndlp->nlp_flag &= ~(NLP_ADISC_SND | NLP_NPR_2B_DISC);
J
James Smart 已提交
1717
	spin_unlock_irq(shost->host_lock);
已提交
1718
	/* ADISC completes to NPort <nlp_DID> */
1719 1720 1721 1722 1723
	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
1724
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1725 1726
	if (lpfc_els_chk_latt(vport)) {
		spin_lock_irq(shost->host_lock);
已提交
1727
		ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1728
		spin_unlock_irq(shost->host_lock);
已提交
1729 1730 1731 1732 1733 1734 1735 1736
		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
1737
				spin_lock_irq(shost->host_lock);
已提交
1738
				ndlp->nlp_flag |= NLP_NPR_2B_DISC;
J
James Smart 已提交
1739 1740
				spin_unlock_irq(shost->host_lock);
				lpfc_set_disctmo(vport);
已提交
1741 1742 1743 1744 1745
			}
			goto out;
		}
		/* ADISC failed */
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
1746
		if (!lpfc_error_lost_link(irsp))
J
James Smart 已提交
1747
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
J
James Smart 已提交
1748
						NLP_EVT_CMPL_ADISC);
1749
	} else
已提交
1750
		/* Good status, call state machine */
J
James Smart 已提交
1751
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
已提交
1752 1753
					NLP_EVT_CMPL_ADISC);

1754 1755
	/* Check to see if there are more ADISCs to be sent */
	if (disc && vport->num_disc_nodes)
J
James Smart 已提交
1756
		lpfc_more_adisc(vport);
已提交
1757 1758 1759 1760 1761
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781
/**
 * lpfc_issue_els_adisc: Issue an address discover iocb to an node on a vport.
 * @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
1782
int
J
James Smart 已提交
1783
lpfc_issue_els_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1784 1785
		     uint8_t retry)
{
J
James Smart 已提交
1786 1787
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
1788 1789 1790
	ADISC *ap;
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
J
James Smart 已提交
1791 1792
	struct lpfc_sli *psli = &phba->sli;
	struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
已提交
1793 1794 1795
	uint8_t *pcmd;
	uint16_t cmdsize;

1796
	cmdsize = (sizeof(uint32_t) + sizeof(ADISC));
J
James Smart 已提交
1797 1798
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ADISC);
1799
	if (!elsiocb)
1800
		return 1;
已提交
1801 1802 1803 1804 1805 1806

	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;
1807
	pcmd += sizeof(uint32_t);
已提交
1808 1809 1810 1811

	/* Fill in ADISC payload */
	ap = (ADISC *) pcmd;
	ap->hardAL_PA = phba->fc_pref_ALPA;
1812 1813
	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
1814
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
1815

J
James Smart 已提交
1816 1817 1818 1819
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue ADISC:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
1820 1821
	phba->fc_stat.elsXmitADISC++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_adisc;
J
James Smart 已提交
1822
	spin_lock_irq(shost->host_lock);
已提交
1823
	ndlp->nlp_flag |= NLP_ADISC_SND;
J
James Smart 已提交
1824
	spin_unlock_irq(shost->host_lock);
已提交
1825
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
J
James Smart 已提交
1826
		spin_lock_irq(shost->host_lock);
已提交
1827
		ndlp->nlp_flag &= ~NLP_ADISC_SND;
J
James Smart 已提交
1828
		spin_unlock_irq(shost->host_lock);
已提交
1829
		lpfc_els_free_iocb(phba, elsiocb);
1830
		return 1;
已提交
1831
	}
1832
	return 0;
已提交
1833 1834
}

1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846
/**
 * lpfc_cmpl_els_logo: Completion callback function for logo.
 * @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
1847
static void
J
James Smart 已提交
1848 1849
lpfc_cmpl_els_logo(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_iocbq *rspiocb)
已提交
1850
{
J
James Smart 已提交
1851 1852 1853
	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
1854 1855 1856 1857 1858 1859 1860 1861
	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
1862
	spin_lock_irq(shost->host_lock);
已提交
1863
	ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
1864
	spin_unlock_irq(shost->host_lock);
已提交
1865

J
James Smart 已提交
1866 1867 1868 1869
	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
1870
	/* LOGO completes to NPort <nlp_DID> */
1871 1872 1873 1874 1875
	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
1876
	/* Check to see if link went down during discovery */
J
James Smart 已提交
1877
	if (lpfc_els_chk_latt(vport))
已提交
1878 1879
		goto out;

1880 1881 1882 1883 1884 1885 1886 1887 1888
	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
1889 1890
	if (irsp->ulpStatus) {
		/* Check for retry */
J
James Smart 已提交
1891
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
已提交
1892 1893 1894 1895
			/* ELS command is being retried */
			goto out;
		/* LOGO failed */
		/* Do not call DSM for lpfc_els_abort'ed ELS cmds */
J
James Smart 已提交
1896
		if (lpfc_error_lost_link(irsp))
已提交
1897
			goto out;
J
James Smart 已提交
1898
		else
J
James Smart 已提交
1899
			lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1900
						NLP_EVT_CMPL_LOGO);
1901
	} else
1902 1903 1904
		/* Good status, call state machine.
		 * This will unregister the rpi if needed.
		 */
J
James Smart 已提交
1905
		lpfc_disc_state_machine(vport, ndlp, cmdiocb,
1906
					NLP_EVT_CMPL_LOGO);
已提交
1907 1908 1909 1910 1911
out:
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931
/**
 * lpfc_issue_els_logo: Issue a logo to an node on a vport.
 * @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
1932
int
J
James Smart 已提交
1933
lpfc_issue_els_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
已提交
1934 1935
		    uint8_t retry)
{
J
James Smart 已提交
1936 1937
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
1938 1939 1940 1941 1942 1943
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
1944
	int rc;
已提交
1945 1946 1947 1948

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

1949 1950 1951 1952 1953 1954 1955
	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);

1956
	cmdsize = (2 * sizeof(uint32_t)) + sizeof(struct lpfc_name);
J
James Smart 已提交
1957 1958
	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LOGO);
1959
	if (!elsiocb)
1960
		return 1;
已提交
1961 1962 1963 1964

	icmd = &elsiocb->iocb;
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_LOGO;
1965
	pcmd += sizeof(uint32_t);
已提交
1966 1967

	/* Fill in LOGO payload */
J
James Smart 已提交
1968
	*((uint32_t *) (pcmd)) = be32_to_cpu(vport->fc_myDID);
1969 1970
	pcmd += sizeof(uint32_t);
	memcpy(pcmd, &vport->fc_portname, sizeof(struct lpfc_name));
已提交
1971

J
James Smart 已提交
1972 1973 1974 1975
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue LOGO:      did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
1976 1977
	phba->fc_stat.elsXmitLOGO++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_logo;
J
James Smart 已提交
1978
	spin_lock_irq(shost->host_lock);
已提交
1979
	ndlp->nlp_flag |= NLP_LOGO_SND;
J
James Smart 已提交
1980
	spin_unlock_irq(shost->host_lock);
1981 1982 1983
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);

	if (rc == IOCB_ERROR) {
J
James Smart 已提交
1984
		spin_lock_irq(shost->host_lock);
已提交
1985
		ndlp->nlp_flag &= ~NLP_LOGO_SND;
J
James Smart 已提交
1986
		spin_unlock_irq(shost->host_lock);
已提交
1987
		lpfc_els_free_iocb(phba, elsiocb);
1988
		return 1;
已提交
1989
	}
1990
	return 0;
已提交
1991 1992
}

1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
/**
 * lpfc_cmpl_els_cmd: Completion callback function for generic els command.
 * @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
2009
static void
J
James Smart 已提交
2010 2011
lpfc_cmpl_els_cmd(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_iocbq *rspiocb)
已提交
2012
{
J
James Smart 已提交
2013
	struct lpfc_vport *vport = cmdiocb->vport;
已提交
2014 2015 2016 2017
	IOCB_t *irsp;

	irsp = &rspiocb->iocb;

J
James Smart 已提交
2018 2019 2020 2021
	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
2022
	/* ELS cmd tag <ulpIoTag> completes */
2023 2024 2025 2026
	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
2027
	/* Check to see if link went down during discovery */
J
James Smart 已提交
2028
	lpfc_els_chk_latt(vport);
已提交
2029 2030 2031 2032
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054
/**
 * lpfc_issue_els_scr: Issue a scr to an node on a vport.
 * @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
2055
int
J
James Smart 已提交
2056
lpfc_issue_els_scr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2057
{
J
James Smart 已提交
2058
	struct lpfc_hba  *phba = vport->phba;
已提交
2059 2060 2061 2062 2063 2064 2065 2066 2067 2068
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */
2069
	cmdsize = (sizeof(uint32_t) + sizeof(SCR));
已提交
2070

2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082
	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
2083 2084 2085

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_SCR);
已提交
2086

2087
	if (!elsiocb) {
2088 2089 2090
		/* This will trigger the release of the node just
		 * allocated
		 */
2091
		lpfc_nlp_put(ndlp);
2092
		return 1;
已提交
2093 2094 2095 2096 2097 2098
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_SCR;
2099
	pcmd += sizeof(uint32_t);
已提交
2100 2101

	/* For SCR, remainder of payload is SCR parameter page */
2102
	memset(pcmd, 0, sizeof(SCR));
已提交
2103 2104
	((SCR *) pcmd)->Function = SCR_FUNC_FULL;

J
James Smart 已提交
2105 2106 2107 2108
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue SCR:       did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2109 2110 2111
	phba->fc_stat.elsXmitSCR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
2112 2113 2114 2115
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the rlease of
		 * the node.
		 */
2116
		lpfc_nlp_put(ndlp);
已提交
2117
		lpfc_els_free_iocb(phba, elsiocb);
2118
		return 1;
已提交
2119
	}
2120 2121 2122
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of node.
	 */
2123
	lpfc_nlp_put(ndlp);
2124
	return 0;
已提交
2125 2126
}

2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148
/**
 * lpfc_issue_els_farpr: Issue a farp to an node on a vport.
 * @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
2149
static int
J
James Smart 已提交
2150
lpfc_issue_els_farpr(struct lpfc_vport *vport, uint32_t nportid, uint8_t retry)
已提交
2151
{
J
James Smart 已提交
2152
	struct lpfc_hba  *phba = vport->phba;
已提交
2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165
	IOCB_t *icmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	FARP *fp;
	uint8_t *pcmd;
	uint32_t *lp;
	uint16_t cmdsize;
	struct lpfc_nodelist *ondlp;
	struct lpfc_nodelist *ndlp;

	psli = &phba->sli;
	pring = &psli->ring[LPFC_ELS_RING];	/* ELS ring */
2166
	cmdsize = (sizeof(uint32_t) + sizeof(FARP));
已提交
2167

2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179
	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
2180 2181 2182

	elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_RNID);
2183
	if (!elsiocb) {
2184 2185 2186
		/* This will trigger the release of the node just
		 * allocated
		 */
2187
		lpfc_nlp_put(ndlp);
2188
		return 1;
已提交
2189 2190 2191 2192 2193 2194
	}

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

	*((uint32_t *) (pcmd)) = ELS_CMD_FARPR;
2195
	pcmd += sizeof(uint32_t);
已提交
2196 2197 2198

	/* Fill in FARPR payload */
	fp = (FARP *) (pcmd);
2199
	memset(fp, 0, sizeof(FARP));
已提交
2200 2201
	lp = (uint32_t *) pcmd;
	*lp++ = be32_to_cpu(nportid);
J
James Smart 已提交
2202
	*lp++ = be32_to_cpu(vport->fc_myDID);
已提交
2203 2204 2205
	fp->Rflags = 0;
	fp->Mflags = (FARP_MATCH_PORT | FARP_MATCH_NODE);

2206 2207
	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
2208
	ondlp = lpfc_findnode_did(vport, nportid);
2209
	if (ondlp && NLP_CHK_NODE_ACT(ondlp)) {
已提交
2210
		memcpy(&fp->OportName, &ondlp->nlp_portname,
2211
		       sizeof(struct lpfc_name));
已提交
2212
		memcpy(&fp->OnodeName, &ondlp->nlp_nodename,
2213
		       sizeof(struct lpfc_name));
已提交
2214 2215
	}

J
James Smart 已提交
2216 2217 2218 2219
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FARPR:     did:x%x",
		ndlp->nlp_DID, 0, 0);

已提交
2220 2221 2222
	phba->fc_stat.elsXmitFARPR++;
	elsiocb->iocb_cmpl = lpfc_cmpl_els_cmd;
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
2223 2224 2225 2226
		/* The additional lpfc_nlp_put will cause the following
		 * lpfc_els_free_iocb routine to trigger the release of
		 * the node.
		 */
2227
		lpfc_nlp_put(ndlp);
已提交
2228
		lpfc_els_free_iocb(phba, elsiocb);
2229
		return 1;
已提交
2230
	}
2231 2232 2233
	/* This will cause the callback-function lpfc_cmpl_els_cmd to
	 * trigger the release of the node.
	 */
2234
	lpfc_nlp_put(ndlp);
2235
	return 0;
已提交
2236 2237
}

2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249
/**
 * lpfc_cancel_retry_delay_tmo: Cancel the timer with delayed iocb-cmd retry.
 * @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.
 **/
2250
void
J
James Smart 已提交
2251
lpfc_cancel_retry_delay_tmo(struct lpfc_vport *vport, struct lpfc_nodelist *nlp)
2252
{
J
James Smart 已提交
2253
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2254
	struct lpfc_work_evt *evtp;
J
James Smart 已提交
2255

2256 2257
	if (!(nlp->nlp_flag & NLP_DELAY_TMO))
		return;
J
James Smart 已提交
2258
	spin_lock_irq(shost->host_lock);
2259
	nlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2260
	spin_unlock_irq(shost->host_lock);
2261 2262
	del_timer_sync(&nlp->nlp_delayfunc);
	nlp->nlp_last_elscmd = 0;
2263
	if (!list_empty(&nlp->els_retry_evt.evt_listp)) {
2264
		list_del_init(&nlp->els_retry_evt.evt_listp);
2265 2266 2267 2268
		/* Decrement nlp reference count held for the delayed retry */
		evtp = &nlp->els_retry_evt;
		lpfc_nlp_put((struct lpfc_nodelist *)evtp->evt_arg1);
	}
2269
	if (nlp->nlp_flag & NLP_NPR_2B_DISC) {
J
James Smart 已提交
2270
		spin_lock_irq(shost->host_lock);
2271
		nlp->nlp_flag &= ~NLP_NPR_2B_DISC;
J
James Smart 已提交
2272 2273
		spin_unlock_irq(shost->host_lock);
		if (vport->num_disc_nodes) {
2274 2275 2276 2277 2278 2279
			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);
2280 2281 2282 2283 2284 2285 2286
				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);
				}
2287 2288 2289 2290 2291 2292
			}
		}
	}
	return;
}

2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306
/**
 * lpfc_els_retry_delay: Timer function with a ndlp delayed function timer.
 * @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
2307 2308 2309
void
lpfc_els_retry_delay(unsigned long ptr)
{
J
James Smart 已提交
2310 2311 2312
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) ptr;
	struct lpfc_vport *vport = ndlp->vport;
	struct lpfc_hba   *phba = vport->phba;
2313
	unsigned long flags;
J
James Smart 已提交
2314
	struct lpfc_work_evt  *evtp = &ndlp->els_retry_evt;
已提交
2315

2316
	spin_lock_irqsave(&phba->hbalock, flags);
已提交
2317
	if (!list_empty(&evtp->evt_listp)) {
2318
		spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2319 2320 2321
		return;
	}

2322 2323 2324 2325
	/* We need to hold the node by incrementing the reference
	 * count until the queued work is done
	 */
	evtp->evt_arg1  = lpfc_nlp_get(ndlp);
2326 2327 2328
	if (evtp->evt_arg1) {
		evtp->evt = LPFC_EVT_ELS_RETRY;
		list_add_tail(&evtp->evt_listp, &phba->work_list);
2329
		lpfc_worker_wake_up(phba);
2330
	}
2331
	spin_unlock_irqrestore(&phba->hbalock, flags);
已提交
2332 2333 2334
	return;
}

2335 2336 2337 2338 2339 2340 2341 2342 2343
/**
 * lpfc_els_retry_delay_handler: Work thread handler for ndlp delayed function.
 * @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
2344 2345 2346
void
lpfc_els_retry_delay_handler(struct lpfc_nodelist *ndlp)
{
J
James Smart 已提交
2347 2348 2349
	struct lpfc_vport *vport = ndlp->vport;
	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
	uint32_t cmd, did, retry;
已提交
2350

J
James Smart 已提交
2351
	spin_lock_irq(shost->host_lock);
2352 2353 2354
	did = ndlp->nlp_DID;
	cmd = ndlp->nlp_last_elscmd;
	ndlp->nlp_last_elscmd = 0;
已提交
2355 2356

	if (!(ndlp->nlp_flag & NLP_DELAY_TMO)) {
J
James Smart 已提交
2357
		spin_unlock_irq(shost->host_lock);
已提交
2358 2359 2360 2361
		return;
	}

	ndlp->nlp_flag &= ~NLP_DELAY_TMO;
J
James Smart 已提交
2362
	spin_unlock_irq(shost->host_lock);
2363 2364 2365 2366 2367 2368
	/*
	 * 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
2369 2370 2371 2372
	retry = ndlp->nlp_retry;

	switch (cmd) {
	case ELS_CMD_FLOGI:
J
James Smart 已提交
2373
		lpfc_issue_els_flogi(vport, ndlp, retry);
已提交
2374 2375
		break;
	case ELS_CMD_PLOGI:
J
James Smart 已提交
2376
		if (!lpfc_issue_els_plogi(vport, ndlp->nlp_DID, retry)) {
2377
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2378
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
2379
		}
已提交
2380 2381
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
2382
		if (!lpfc_issue_els_adisc(vport, ndlp, retry)) {
2383
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2384
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
2385
		}
已提交
2386 2387
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
2388
		if (!lpfc_issue_els_prli(vport, ndlp, retry)) {
2389
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2390
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
2391
		}
已提交
2392 2393
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
2394
		if (!lpfc_issue_els_logo(vport, ndlp, retry)) {
2395
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2396
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
2397
		}
已提交
2398
		break;
2399 2400 2401
	case ELS_CMD_FDISC:
		lpfc_issue_els_fdisc(vport, ndlp, retry);
		break;
已提交
2402 2403 2404 2405
	}
	return;
}

2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426
/**
 * lpfc_els_retry: Make retry decision on an els command iocb.
 * @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
2427
static int
J
James Smart 已提交
2428 2429
lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
	       struct lpfc_iocbq *rspiocb)
已提交
2430
{
J
James Smart 已提交
2431 2432 2433 2434 2435
	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
2436 2437
	uint32_t *elscmd;
	struct ls_rjt stat;
J
James Smart 已提交
2438
	int retry = 0, maxretry = lpfc_max_els_tries, delay = 0;
2439
	int logerr = 0;
J
James Smart 已提交
2440
	uint32_t cmd = 0;
2441
	uint32_t did;
已提交
2442

2443

已提交
2444 2445 2446 2447 2448 2449 2450 2451 2452
	/* Note: context2 may be 0 for internal driver abort
	 * of delays ELS command.
	 */

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

2453
	if (ndlp && NLP_CHK_NODE_ACT(ndlp))
2454 2455 2456 2457
		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
2458
		ndlp = lpfc_findnode_did(vport, did);
2459 2460
		if ((!ndlp || !NLP_CHK_NODE_ACT(ndlp))
		    && (cmd != ELS_CMD_PLOGI))
2461 2462 2463
			return 1;
	}

J
James Smart 已提交
2464 2465 2466 2467
	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
2468 2469 2470 2471 2472 2473 2474 2475
	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:
2476 2477 2478 2479 2480 2481 2482 2483 2484
			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
2485
			if (cmd == ELS_CMD_PLOGI && cmdiocb->retry == 0)
2486
				delay = 1000;
已提交
2487 2488 2489
			retry = 1;
			break;

2490
		case IOERR_ILLEGAL_COMMAND:
2491 2492 2493 2494 2495 2496 2497 2498 2499
			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;
2500 2501
			break;

已提交
2502
		case IOERR_NO_RESOURCES:
2503
			logerr = 1; /* HBA out of resources */
J
James Smart 已提交
2504 2505 2506 2507 2508 2509 2510
			retry = 1;
			if (cmdiocb->retry > 100)
				delay = 100;
			maxretry = 250;
			break;

		case IOERR_ILLEGAL_FRAME:
2511
			delay = 100;
已提交
2512 2513 2514
			retry = 1;
			break;

J
James Smart 已提交
2515
		case IOERR_SEQUENCE_TIMEOUT:
已提交
2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531
		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:
2532
		logerr = 1; /* Fabric / Remote NPort out of resources */
已提交
2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545
		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) {
2546
					delay = 1000;
已提交
2547 2548 2549 2550 2551 2552
					maxretry = 48;
				}
				retry = 1;
				break;
			}
			if (cmd == ELS_CMD_PLOGI) {
2553
				delay = 1000;
已提交
2554 2555 2556 2557
				maxretry = lpfc_max_els_tries + 1;
				retry = 1;
				break;
			}
2558 2559 2560
			if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) &&
			  (cmd == ELS_CMD_FDISC) &&
			  (stat.un.b.lsRjtRsnCodeExp == LSEXP_OUT_OF_RESOURCE)){
2561 2562 2563 2564
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
						 "0125 FDISC Failed (x%x). "
						 "Fabric out of resources\n",
						 stat.un.lsRjtError);
2565 2566 2567
				lpfc_vport_set_state(vport,
						     FC_VPORT_NO_FABRIC_RSCS);
			}
已提交
2568 2569 2570
			break;

		case LSRJT_LOGICAL_BSY:
J
James Smart 已提交
2571 2572
			if ((cmd == ELS_CMD_PLOGI) ||
			    (cmd == ELS_CMD_PRLI)) {
2573
				delay = 1000;
已提交
2574
				maxretry = 48;
2575
			} else if (cmd == ELS_CMD_FDISC) {
2576 2577 2578 2579
				/* FDISC retry policy */
				maxretry = 48;
				if (cmdiocb->retry >= 32)
					delay = 1000;
已提交
2580 2581 2582
			}
			retry = 1;
			break;
2583 2584

		case LSRJT_LOGICAL_ERR:
2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595
			/* 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;
			}
2596 2597 2598 2599 2600 2601
		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))
			  ) {
2602
				lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
2603
						 "0122 FDISC Failed (x%x). "
2604 2605
						 "Fabric Detected Bad WWN\n",
						 stat.un.lsRjtError);
2606 2607 2608 2609
				lpfc_vport_set_state(vport,
						     FC_VPORT_FABRIC_REJ_WWN);
			}
			break;
已提交
2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620
		}
		break;

	case IOSTAT_INTERMED_RSP:
	case IOSTAT_BA_RJT:
		break;

	default:
		break;
	}

2621
	if (did == FDMI_DID)
已提交
2622 2623
		retry = 1;

2624
	if ((cmd == ELS_CMD_FLOGI) &&
2625 2626
	    (phba->fc_topology != TOPOLOGY_LOOP) &&
	    !lpfc_error_lost_link(irsp)) {
2627 2628 2629 2630 2631 2632 2633
		/* FLOGI retry policy */
		retry = 1;
		maxretry = 48;
		if (cmdiocb->retry >= 32)
			delay = 1000;
	}

已提交
2634 2635 2636 2637 2638
	if ((++cmdiocb->retry) >= maxretry) {
		phba->fc_stat.elsRetryExceeded++;
		retry = 0;
	}

2639 2640 2641
	if ((vport->load_flag & FC_UNLOADING) != 0)
		retry = 0;

已提交
2642 2643 2644
	if (retry) {

		/* Retry ELS command <elsCmd> to remote NPORT <did> */
2645 2646 2647 2648
		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
2649

J
James Smart 已提交
2650 2651 2652 2653 2654
		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
2655
			/* If discovery / RSCN timer is running, reset it */
J
James Smart 已提交
2656
			if (timer_pending(&vport->fc_disctmo) ||
2657
			    (vport->fc_flag & FC_RSCN_MODE))
J
James Smart 已提交
2658
				lpfc_set_disctmo(vport);
已提交
2659 2660 2661
		}

		phba->fc_stat.elsXmitRetry++;
2662
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) && delay) {
已提交
2663 2664 2665
			phba->fc_stat.elsDelayRetry++;
			ndlp->nlp_retry = cmdiocb->retry;

2666 2667 2668
			/* delay is specified in milliseconds */
			mod_timer(&ndlp->nlp_delayfunc,
				jiffies + msecs_to_jiffies(delay));
J
James Smart 已提交
2669
			spin_lock_irq(shost->host_lock);
已提交
2670
			ndlp->nlp_flag |= NLP_DELAY_TMO;
J
James Smart 已提交
2671
			spin_unlock_irq(shost->host_lock);
已提交
2672

2673
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2674 2675 2676 2677 2678 2679
			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
2680 2681
			ndlp->nlp_last_elscmd = cmd;

2682
			return 1;
已提交
2683 2684 2685
		}
		switch (cmd) {
		case ELS_CMD_FLOGI:
J
James Smart 已提交
2686
			lpfc_issue_els_flogi(vport, ndlp, cmdiocb->retry);
2687
			return 1;
2688 2689 2690
		case ELS_CMD_FDISC:
			lpfc_issue_els_fdisc(vport, ndlp, cmdiocb->retry);
			return 1;
已提交
2691
		case ELS_CMD_PLOGI:
2692
			if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2693
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2694
				lpfc_nlp_set_state(vport, ndlp,
2695
						   NLP_STE_PLOGI_ISSUE);
2696
			}
J
James Smart 已提交
2697
			lpfc_issue_els_plogi(vport, did, cmdiocb->retry);
2698
			return 1;
已提交
2699
		case ELS_CMD_ADISC:
2700
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2701 2702
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, cmdiocb->retry);
2703
			return 1;
已提交
2704
		case ELS_CMD_PRLI:
2705
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2706 2707
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PRLI_ISSUE);
			lpfc_issue_els_prli(vport, ndlp, cmdiocb->retry);
2708
			return 1;
已提交
2709
		case ELS_CMD_LOGO:
2710
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
2711 2712
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
			lpfc_issue_els_logo(vport, ndlp, cmdiocb->retry);
2713
			return 1;
已提交
2714 2715 2716
		}
	}
	/* No retry ELS command <elsCmd> to remote NPORT <did> */
2717 2718 2719 2720 2721 2722 2723 2724 2725
	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,
2726 2727 2728 2729
			 "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]);
2730
	}
2731
	return 0;
已提交
2732 2733
}

2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747
/**
 * lpfc_els_free_data: Free lpfc dma buffer and data structure with an iocb.
 * @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)
 **/
2748
static int
2749 2750 2751 2752
lpfc_els_free_data(struct lpfc_hba *phba, struct lpfc_dmabuf *buf_ptr1)
{
	struct lpfc_dmabuf *buf_ptr;

2753
	/* Free the response before processing the command. */
2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765
	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;
}

2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777
/**
 * lpfc_els_free_bpl: Free lpfc dma buffer and data structure with bpl.
 * @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)
 **/
2778
static int
2779 2780 2781 2782 2783 2784 2785
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;
}

2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812
/**
 * lpfc_els_free_iocb: Free a command iocb and its associated resources.
 * @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
2813
int
2814
lpfc_els_free_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *elsiocb)
已提交
2815 2816
{
	struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2817 2818 2819 2820 2821 2822
	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
2823

2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835
			/* 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);
2836 2837
		elsiocb->context1 = NULL;
	}
已提交
2838 2839
	/* context2  = cmd,  context2->next = rsp, context3 = bpl */
	if (elsiocb->context2) {
2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868
		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
2869 2870 2871 2872
	}

	if (elsiocb->context3) {
		buf_ptr = (struct lpfc_dmabuf *) elsiocb->context3;
2873
		lpfc_els_free_bpl(phba, buf_ptr);
已提交
2874
	}
2875
	lpfc_sli_release_iocbq(phba, elsiocb);
已提交
2876 2877 2878
	return 0;
}

2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895
/**
 * lpfc_cmpl_els_logo_acc: Completion callback function to logo acc response.
 * @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
2896
static void
J
James Smart 已提交
2897 2898
lpfc_cmpl_els_logo_acc(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
		       struct lpfc_iocbq *rspiocb)
已提交
2899
{
J
James Smart 已提交
2900 2901
	struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
	struct lpfc_vport *vport = cmdiocb->vport;
J
James Smart 已提交
2902 2903 2904 2905 2906 2907
	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
2908
	/* ACC to LOGO completes to NPort <nlp_DID> */
2909 2910 2911 2912 2913
	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);
2914 2915 2916 2917 2918 2919 2920 2921

	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);
2922 2923 2924 2925 2926
		} else {
			/* Indicate the node has already released, should
			 * not reference to it from within lpfc_els_free_iocb.
			 */
			cmdiocb->context1 = NULL;
2927
		}
已提交
2928 2929 2930 2931 2932
	}
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945
/**
 * lpfc_mbx_cmpl_dflt_rpi: Completion callbk func for unreg dflt rpi mbox cmd.
 * @phba: pointer to lpfc hba data structure.
 * @pmb: pointer to the driver internal queue element for mailbox command.
 *
 * This routine is the completion callback function for 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
2946 2947 2948 2949 2950 2951 2952 2953 2954 2955
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;

	pmb->context1 = NULL;
	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	kfree(mp);
	mempool_free(pmb, phba->mbox_mem_pool);
2956
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
2957 2958 2959 2960 2961 2962 2963
		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);
	}
J
James Smart 已提交
2964 2965 2966
	return;
}

2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982
/**
 * lpfc_cmpl_els_rsp: Completion callback function for els response iocb cmd.
 * @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
2983
static void
J
James Smart 已提交
2984
lpfc_cmpl_els_rsp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
2985
		  struct lpfc_iocbq *rspiocb)
已提交
2986
{
J
James Smart 已提交
2987 2988 2989
	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;
2990 2991
	IOCB_t  *irsp;
	uint8_t *pcmd;
已提交
2992
	LPFC_MBOXQ_t *mbox = NULL;
J
James Smart 已提交
2993
	struct lpfc_dmabuf *mp = NULL;
2994
	uint32_t ls_rjt = 0;
已提交
2995

J
James Smart 已提交
2996 2997
	irsp = &rspiocb->iocb;

已提交
2998 2999 3000
	if (cmdiocb->context_un.mbox)
		mbox = cmdiocb->context_un.mbox;

3001 3002 3003
	/* First determine if this is a LS_RJT cmpl. Note, this callback
	 * function can have cmdiocb->contest1 (ndlp) field set to NULL.
	 */
3004
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) cmdiocb->context2)->virt);
3005 3006
	if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
	    (*((uint32_t *) (pcmd)) == ELS_CMD_LS_RJT)) {
3007 3008
		/* A LS_RJT associated with Default RPI cleanup has its own
		 * seperate code path.
3009 3010 3011 3012 3013
		 */
		if (!(ndlp->nlp_flag & NLP_RM_DFLT_RPI))
			ls_rjt = 1;
	}

已提交
3014
	/* Check to see if link went down during discovery */
3015
	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || lpfc_els_chk_latt(vport)) {
已提交
3016
		if (mbox) {
3017 3018 3019 3020 3021
			mp = (struct lpfc_dmabuf *) mbox->context1;
			if (mp) {
				lpfc_mbuf_free(phba, mp->virt, mp->phys);
				kfree(mp);
			}
3022
			mempool_free(mbox, phba->mbox_mem_pool);
已提交
3023
		}
3024 3025
		if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
		    (ndlp->nlp_flag & NLP_RM_DFLT_RPI))
3026
			if (lpfc_nlp_not_used(ndlp)) {
3027
				ndlp = NULL;
3028 3029 3030 3031 3032 3033
				/* 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
3034 3035 3036
		goto out;
	}

J
James Smart 已提交
3037
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_RSP,
3038
		"ELS rsp cmpl:    status:x%x/x%x did:x%x",
J
James Smart 已提交
3039
		irsp->ulpStatus, irsp->un.ulpWord[4],
3040
		cmdiocb->iocb.un.elsreq64.remoteID);
已提交
3041
	/* ELS response tag <ulpIoTag> completes */
3042 3043 3044 3045 3046 3047 3048
	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
3049 3050 3051
	if (mbox) {
		if ((rspiocb->iocb.ulpStatus == 0)
		    && (ndlp->nlp_flag & NLP_ACC_REGLOGIN)) {
J
James Smart 已提交
3052
			lpfc_unreg_rpi(vport, ndlp);
3053 3054 3055
			/* Increment reference count to ndlp to hold the
			 * reference to ndlp for the callback function.
			 */
3056
			mbox->context2 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
3057
			mbox->vport = vport;
J
James Smart 已提交
3058 3059 3060 3061 3062 3063 3064 3065
			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
3066
					   NLP_STE_REG_LOGIN_ISSUE);
J
James Smart 已提交
3067
			}
3068
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
3069
			    != MBX_NOT_FINISHED)
已提交
3070
				goto out;
3071 3072 3073 3074 3075
			else
				/* Decrement the ndlp reference count we
				 * set for this failed mailbox command.
				 */
				lpfc_nlp_put(ndlp);
3076 3077 3078 3079 3080 3081 3082 3083

			/* 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);

3084
			if (lpfc_nlp_not_used(ndlp)) {
3085
				ndlp = NULL;
3086 3087 3088 3089 3090 3091
				/* 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
3092
		} else {
J
James Smart 已提交
3093 3094 3095
			/* Do not drop node for lpfc_els_abort'ed ELS cmds */
			if (!lpfc_error_lost_link(irsp) &&
			    ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
3096
				if (lpfc_nlp_not_used(ndlp)) {
3097
					ndlp = NULL;
3098 3099 3100 3101 3102 3103 3104
					/* 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
3105 3106
			}
		}
3107 3108 3109 3110 3111 3112
		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
3113 3114
	}
out:
3115
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
J
James Smart 已提交
3116
		spin_lock_irq(shost->host_lock);
J
James Smart 已提交
3117
		ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
J
James Smart 已提交
3118
		spin_unlock_irq(shost->host_lock);
3119 3120 3121 3122 3123 3124 3125

		/* 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)
3126 3127 3128 3129 3130 3131
			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
3132
	}
3133

已提交
3134 3135 3136 3137
	lpfc_els_free_iocb(phba, cmdiocb);
	return;
}

3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162
/**
 * lpfc_els_rsp_acc: Prepare and issue an acc response iocb command.
 * @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
3163
int
J
James Smart 已提交
3164 3165
lpfc_els_rsp_acc(struct lpfc_vport *vport, uint32_t flag,
		 struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
3166
		 LPFC_MBOXQ_t *mbox)
已提交
3167
{
J
James Smart 已提交
3168 3169
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
3170 3171 3172 3173 3174 3175 3176 3177
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;
3178
	ELS_PKT *els_pkt_ptr;
已提交
3179 3180 3181 3182 3183 3184 3185

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

	switch (flag) {
	case ELS_CMD_ACC:
3186
		cmdsize = sizeof(uint32_t);
J
James Smart 已提交
3187 3188
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3189
		if (!elsiocb) {
J
James Smart 已提交
3190
			spin_lock_irq(shost->host_lock);
3191
			ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3192
			spin_unlock_irq(shost->host_lock);
3193
			return 1;
已提交
3194
		}
J
James Smart 已提交
3195

已提交
3196 3197 3198 3199
		icmd = &elsiocb->iocb;
		icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
		pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
		*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3200
		pcmd += sizeof(uint32_t);
J
James Smart 已提交
3201 3202 3203 3204

		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
3205 3206
		break;
	case ELS_CMD_PLOGI:
3207
		cmdsize = (sizeof(struct serv_parm) + sizeof(uint32_t));
J
James Smart 已提交
3208 3209
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
					     ndlp, ndlp->nlp_DID, ELS_CMD_ACC);
3210
		if (!elsiocb)
3211
			return 1;
3212

已提交
3213 3214 3215 3216 3217 3218 3219 3220
		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;
3221 3222
		pcmd += sizeof(uint32_t);
		memcpy(pcmd, &vport->fc_sparam, sizeof(struct serv_parm));
J
James Smart 已提交
3223 3224 3225 3226

		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
3227
		break;
3228
	case ELS_CMD_PRLO:
3229
		cmdsize = sizeof(uint32_t) + sizeof(PRLO);
J
James Smart 已提交
3230
		elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry,
3231 3232 3233 3234 3235 3236 3237 3238 3239
					     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,
3240
		       sizeof(uint32_t) + sizeof(PRLO));
3241 3242 3243
		*((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
3244 3245 3246 3247

		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);
3248
		break;
已提交
3249
	default:
3250
		return 1;
已提交
3251 3252
	}
	/* Xmit ELS ACC response tag <ulpIoTag> */
3253 3254 3255 3256 3257 3258
	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
3259
	if (ndlp->nlp_flag & NLP_LOGO_ACC) {
J
James Smart 已提交
3260
		spin_lock_irq(shost->host_lock);
3261
		ndlp->nlp_flag &= ~NLP_LOGO_ACC;
J
James Smart 已提交
3262
		spin_unlock_irq(shost->host_lock);
已提交
3263 3264
		elsiocb->iocb_cmpl = lpfc_cmpl_els_logo_acc;
	} else {
J
James Smart 已提交
3265
		elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3266 3267 3268 3269 3270 3271
	}

	phba->fc_stat.elsXmitACC++;
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3272
		return 1;
已提交
3273
	}
3274
	return 0;
已提交
3275 3276
}

3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298
/**
 * lpfc_els_rsp_reject: Propare and issue a rjt response iocb command.
 * @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
3299
int
J
James Smart 已提交
3300
lpfc_els_rsp_reject(struct lpfc_vport *vport, uint32_t rejectError,
J
James Smart 已提交
3301 3302
		    struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp,
		    LPFC_MBOXQ_t *mbox)
已提交
3303
{
J
James Smart 已提交
3304
	struct lpfc_hba  *phba = vport->phba;
已提交
3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

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

3317
	cmdsize = 2 * sizeof(uint32_t);
J
James Smart 已提交
3318 3319
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_LS_RJT);
3320
	if (!elsiocb)
3321
		return 1;
已提交
3322 3323 3324 3325 3326 3327 3328

	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;
3329
	pcmd += sizeof(uint32_t);
已提交
3330 3331
	*((uint32_t *) (pcmd)) = rejectError;

3332
	if (mbox)
J
James Smart 已提交
3333 3334
		elsiocb->context_un.mbox = mbox;

已提交
3335
	/* Xmit ELS RJT <err> response tag <ulpIoTag> */
3336 3337 3338 3339 3340 3341 3342
	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
3343 3344 3345 3346
	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
3347
	phba->fc_stat.elsXmitLSRJT++;
J
James Smart 已提交
3348
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3349
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
3350

已提交
3351 3352
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3353
		return 1;
已提交
3354
	}
3355
	return 0;
已提交
3356 3357
}

3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376
/**
 * lpfc_els_rsp_adisc_acc: Prepare and issue acc response to adisc iocb cmd.
 * @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
3377
int
J
James Smart 已提交
3378 3379
lpfc_els_rsp_adisc_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
		       struct lpfc_nodelist *ndlp)
已提交
3380
{
J
James Smart 已提交
3381 3382 3383
	struct lpfc_hba  *phba = vport->phba;
	struct lpfc_sli  *psli = &phba->sli;
	struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
已提交
3384
	ADISC *ap;
J
James Smart 已提交
3385
	IOCB_t *icmd, *oldcmd;
已提交
3386 3387 3388 3389 3390
	struct lpfc_iocbq *elsiocb;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

3391
	cmdsize = sizeof(uint32_t) + sizeof(ADISC);
J
James Smart 已提交
3392 3393
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3394
	if (!elsiocb)
3395
		return 1;
已提交
3396

3397 3398 3399 3400
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

已提交
3401
	/* Xmit ADISC ACC response tag <ulpIoTag> */
3402 3403 3404 3405 3406 3407
	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
3408 3409 3410
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3411
	pcmd += sizeof(uint32_t);
已提交
3412 3413 3414

	ap = (ADISC *) (pcmd);
	ap->hardAL_PA = phba->fc_pref_ALPA;
3415 3416
	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
3417
	ap->DID = be32_to_cpu(vport->fc_myDID);
已提交
3418

J
James Smart 已提交
3419 3420 3421 3422
	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
3423
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3424
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3425 3426 3427
	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3428
		return 1;
已提交
3429
	}
3430
	return 0;
已提交
3431 3432
}

3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451
/**
 * lpfc_els_rsp_prli_acc: Prepare and issue acc response to prli iocb cmd.
 * @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
3452
int
J
James Smart 已提交
3453
lpfc_els_rsp_prli_acc(struct lpfc_vport *vport, struct lpfc_iocbq *oldiocb,
3454
		      struct lpfc_nodelist *ndlp)
已提交
3455
{
J
James Smart 已提交
3456
	struct lpfc_hba  *phba = vport->phba;
已提交
3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470
	PRLI *npr;
	lpfc_vpd_t *vpd;
	IOCB_t *icmd;
	IOCB_t *oldcmd;
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

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

3471
	cmdsize = sizeof(uint32_t) + sizeof(PRLI);
J
James Smart 已提交
3472
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
3473
		ndlp->nlp_DID, (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK)));
3474 3475
	if (!elsiocb)
		return 1;
已提交
3476

3477 3478 3479
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3480
	/* Xmit PRLI ACC response tag <ulpIoTag> */
3481 3482 3483 3484 3485 3486
	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
3487 3488 3489
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);

	*((uint32_t *) (pcmd)) = (ELS_CMD_ACC | (ELS_CMD_PRLI & ~ELS_RSP_MASK));
3490
	pcmd += sizeof(uint32_t);
已提交
3491 3492

	/* For PRLI, remainder of payload is PRLI parameter page */
3493
	memset(pcmd, 0, sizeof(PRLI));
已提交
3494 3495 3496 3497

	npr = (PRLI *) pcmd;
	vpd = &phba->vpd;
	/*
3498 3499
	 * 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
3500
	 */
3501 3502
	if ((ndlp->nlp_type & NLP_FCP_TARGET) &&
	    (vpd->rev.feaLevelHigh >= 0x02)) {
已提交
3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515
		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
3516 3517 3518 3519
	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
3520
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3521
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
已提交
3522 3523 3524 3525

	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3526
		return 1;
已提交
3527
	}
3528
	return 0;
已提交
3529 3530
}

3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556
/**
 * lpfc_els_rsp_rnid_acc: Issue rnid acc response iocb command.
 * @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
3557
static int
J
James Smart 已提交
3558
lpfc_els_rsp_rnid_acc(struct lpfc_vport *vport, uint8_t format,
3559
		      struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
已提交
3560
{
J
James Smart 已提交
3561
	struct lpfc_hba  *phba = vport->phba;
已提交
3562
	RNID *rn;
J
James Smart 已提交
3563
	IOCB_t *icmd, *oldcmd;
已提交
3564 3565 3566 3567 3568 3569 3570 3571 3572 3573
	struct lpfc_iocbq *elsiocb;
	struct lpfc_sli_ring *pring;
	struct lpfc_sli *psli;
	uint8_t *pcmd;
	uint16_t cmdsize;
	int rc;

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

3574 3575
	cmdsize = sizeof(uint32_t) + sizeof(uint32_t)
					+ (2 * sizeof(struct lpfc_name));
已提交
3576
	if (format)
3577
		cmdsize += sizeof(RNID_TOP_DISC);
已提交
3578

J
James Smart 已提交
3579 3580
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
3581
	if (!elsiocb)
3582
		return 1;
已提交
3583

3584 3585 3586
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */
已提交
3587
	/* Xmit RNID ACC response tag <ulpIoTag> */
3588 3589 3590
	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
3591 3592
	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
3593
	pcmd += sizeof(uint32_t);
已提交
3594

3595
	memset(pcmd, 0, sizeof(RNID));
已提交
3596 3597
	rn = (RNID *) (pcmd);
	rn->Format = format;
3598 3599 3600
	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
3601 3602 3603 3604 3605
	switch (format) {
	case 0:
		rn->SpecificLen = 0;
		break;
	case RNID_TOPOLOGY_DISC:
3606
		rn->SpecificLen = sizeof(RNID_TOP_DISC);
已提交
3607
		memcpy(&rn->un.topologyDisc.portName,
3608
		       &vport->fc_portname, sizeof(struct lpfc_name));
已提交
3609 3610 3611 3612 3613 3614 3615 3616 3617 3618
		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
3619 3620 3621 3622
	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
3623
	phba->fc_stat.elsXmitACC++;
J
James Smart 已提交
3624
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
3625
	lpfc_nlp_put(ndlp);
已提交
3626 3627 3628 3629 3630 3631
	elsiocb->context1 = NULL;  /* Don't need ndlp for cmpl,
				    * it could be freed */

	rc = lpfc_sli_issue_iocb(phba, pring, elsiocb, 0);
	if (rc == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
3632
		return 1;
已提交
3633
	}
3634
	return 0;
已提交
3635 3636
}

3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655
/**
 * lpfc_els_disc_adisc: Issue remaining adisc iocbs to npr nodes of a vport.
 * @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
3656
int
J
James Smart 已提交
3657
lpfc_els_disc_adisc(struct lpfc_vport *vport)
已提交
3658
{
J
James Smart 已提交
3659
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3660
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
3661
	int sentadisc = 0;
已提交
3662

3663
	/* go thru NPR nodes and issue any remaining ELS ADISCs */
J
James Smart 已提交
3664
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3665 3666
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
3667 3668 3669
		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
3670
			spin_lock_irq(shost->host_lock);
3671
			ndlp->nlp_flag &= ~NLP_NPR_ADISC;
J
James Smart 已提交
3672
			spin_unlock_irq(shost->host_lock);
3673
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
3674 3675
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_ADISC_ISSUE);
			lpfc_issue_els_adisc(vport, ndlp, 0);
3676
			sentadisc++;
J
James Smart 已提交
3677 3678
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
3679
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
3680 3681 3682
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
3683
				break;
已提交
3684 3685 3686 3687
			}
		}
	}
	if (sentadisc == 0) {
J
James Smart 已提交
3688 3689 3690
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
3691
	}
3692
	return sentadisc;
已提交
3693 3694
}

3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713
/**
 * lpfc_els_disc_plogi: Issue plogi for all npr nodes of a vport before adisc.
 * @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
3714
int
J
James Smart 已提交
3715
lpfc_els_disc_plogi(struct lpfc_vport *vport)
已提交
3716
{
J
James Smart 已提交
3717
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3718
	struct lpfc_nodelist *ndlp, *next_ndlp;
J
James Smart 已提交
3719
	int sentplogi = 0;
已提交
3720

J
James Smart 已提交
3721 3722
	/* go thru NPR nodes and issue any remaining ELS PLOGIs */
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
3723 3724
		if (!NLP_CHK_NODE_ACT(ndlp))
			continue;
3725 3726 3727 3728 3729
		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
3730 3731
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
			lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
3732
			sentplogi++;
J
James Smart 已提交
3733 3734
			vport->num_disc_nodes++;
			if (vport->num_disc_nodes >=
3735
			    vport->cfg_discovery_threads) {
J
James Smart 已提交
3736 3737 3738
				spin_lock_irq(shost->host_lock);
				vport->fc_flag |= FC_NLP_MORE;
				spin_unlock_irq(shost->host_lock);
3739
				break;
已提交
3740 3741 3742
			}
		}
	}
3743 3744 3745 3746
	if (sentplogi) {
		lpfc_set_disctmo(vport);
	}
	else {
J
James Smart 已提交
3747 3748 3749
		spin_lock_irq(shost->host_lock);
		vport->fc_flag &= ~FC_NLP_MORE;
		spin_unlock_irq(shost->host_lock);
已提交
3750
	}
3751
	return sentplogi;
已提交
3752 3753
}

3754 3755 3756 3757 3758 3759 3760 3761 3762
/**
 * lpfc_els_flush_rscn: Clean up any rscn activities with a vport.
 * @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.
 **/
3763
void
J
James Smart 已提交
3764
lpfc_els_flush_rscn(struct lpfc_vport *vport)
已提交
3765
{
J
James Smart 已提交
3766 3767
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
3768 3769
	int i;

3770 3771 3772 3773 3774 3775 3776 3777 3778 3779
	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
3780
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3781
		lpfc_in_buf_free(phba, vport->fc_rscn_id_list[i]);
J
James Smart 已提交
3782
		vport->fc_rscn_id_list[i] = NULL;
已提交
3783
	}
J
James Smart 已提交
3784 3785 3786 3787 3788
	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);
3789 3790
	/* Indicate we are done walking this fc_rscn_id_list */
	vport->fc_rscn_flush = 0;
已提交
3791 3792
}

3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804
/**
 * lpfc_rscn_payload_check: Check whether there is a pending rscn to a did.
 * @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
3805
int
J
James Smart 已提交
3806
lpfc_rscn_payload_check(struct lpfc_vport *vport, uint32_t did)
已提交
3807 3808 3809 3810
{
	D_ID ns_did;
	D_ID rscn_did;
	uint32_t *lp;
3811
	uint32_t payload_len, i;
3812
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
已提交
3813 3814 3815 3816 3817

	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
3818
		return 0;
已提交
3819 3820

	/* If we are doing a FULL RSCN rediscovery, match everything */
J
James Smart 已提交
3821
	if (vport->fc_flag & FC_RSCN_DISCOVERY)
3822
		return did;
已提交
3823

3824 3825 3826 3827 3828 3829 3830 3831 3832
	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
3833
	for (i = 0; i < vport->fc_rscn_id_cnt; i++) {
3834 3835 3836
		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
3837
		while (payload_len) {
3838 3839
			rscn_did.un.word = be32_to_cpu(*lp++);
			payload_len -= sizeof(uint32_t);
3840 3841
			switch (rscn_did.un.b.resv & RSCN_ADDRESS_FORMAT_MASK) {
			case RSCN_ADDRESS_FORMAT_PORT:
J
James Smart 已提交
3842
				if (ns_did.un.word == rscn_did.un.word)
3843
					goto return_did_out;
已提交
3844
				break;
3845
			case RSCN_ADDRESS_FORMAT_AREA:
已提交
3846 3847
				if ((ns_did.un.b.domain == rscn_did.un.b.domain)
				    && (ns_did.un.b.area == rscn_did.un.b.area))
3848
					goto return_did_out;
已提交
3849
				break;
3850
			case RSCN_ADDRESS_FORMAT_DOMAIN:
已提交
3851
				if (ns_did.un.b.domain == rscn_did.un.b.domain)
3852
					goto return_did_out;
已提交
3853
				break;
3854
			case RSCN_ADDRESS_FORMAT_FABRIC:
3855
				goto return_did_out;
已提交
3856 3857
			}
		}
3858
	}
3859 3860
	/* Indicate we are done with walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
3861
	return 0;
3862 3863 3864 3865
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
3866 3867
}

3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878
/**
 * lpfc_rscn_recovery_check: Send recovery event to vport nodes matching rscn
 * @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
3879
static int
J
James Smart 已提交
3880
lpfc_rscn_recovery_check(struct lpfc_vport *vport)
已提交
3881
{
3882
	struct lpfc_nodelist *ndlp = NULL;
已提交
3883

3884
	/* Move all affected nodes by pending RSCNs to NPR state. */
J
James Smart 已提交
3885
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3886
		if (!NLP_CHK_NODE_ACT(ndlp) ||
3887 3888
		    (ndlp->nlp_state == NLP_STE_UNUSED_NODE) ||
		    !lpfc_rscn_payload_check(vport, ndlp->nlp_DID))
3889
			continue;
J
James Smart 已提交
3890
		lpfc_disc_state_machine(vport, ndlp, NULL,
3891 3892
					NLP_EVT_DEVICE_RECOVERY);
		lpfc_cancel_retry_delay_tmo(vport, ndlp);
已提交
3893
	}
3894
	return 0;
已提交
3895 3896
}

3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939
/**
 * lpfc_send_rscn_event: Send an RSCN event to management application.
 * @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);
}

3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961
/**
 * lpfc_els_rcv_rscn: Process an unsolicited rscn 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 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
3962
static int
J
James Smart 已提交
3963
lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
3964
		  struct lpfc_nodelist *ndlp)
已提交
3965
{
J
James Smart 已提交
3966 3967
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
3968
	struct lpfc_dmabuf *pcmd;
3969
	uint32_t *lp, *datap;
已提交
3970
	IOCB_t *icmd;
3971
	uint32_t payload_len, length, nportid, *cmd;
3972
	int rscn_cnt;
3973
	int rscn_id = 0, hba_id = 0;
3974
	int i;
已提交
3975 3976 3977 3978 3979

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

3980 3981
	payload_len = be32_to_cpu(*lp++ & ~ELS_CMD_MASK);
	payload_len -= sizeof(uint32_t);	/* take off word 0 */
已提交
3982
	/* RSCN received */
3983 3984
	lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
			 "0214 RSCN received Data: x%x x%x x%x x%x\n",
3985 3986
			 vport->fc_flag, payload_len, *lp,
			 vport->fc_rscn_id_cnt);
3987 3988 3989 3990

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

3991
	for (i = 0; i < payload_len/sizeof(uint32_t); i++)
J
James Smart 已提交
3992
		fc_host_post_event(shost, fc_get_event_number(),
3993 3994
			FCH_EVT_RSCN, lp[i]);

已提交
3995 3996 3997
	/* If we are about to begin discovery, just ACC the RSCN.
	 * Discovery processing will satisfy it.
	 */
J
James Smart 已提交
3998
	if (vport->port_state <= LPFC_NS_QRY) {
J
James Smart 已提交
3999 4000 4001 4002
		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);

4003
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4004
		return 0;
已提交
4005 4006
	}

4007 4008 4009 4010
	/* 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) &&
4011
		!(vport->cfg_peer_port_login)) {
4012 4013 4014 4015 4016 4017 4018
		i = payload_len;
		datap = lp;
		while (i > 0) {
			nportid = *datap++;
			nportid = ((be32_to_cpu(nportid)) & Mask_DID);
			i -= sizeof(uint32_t);
			rscn_id++;
4019 4020
			if (lpfc_find_vport_by_did(phba, nportid))
				hba_id++;
4021 4022 4023
		}
		if (rscn_id == hba_id) {
			/* ALL NPortIDs in RSCN are on HBA */
4024
			lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY,
4025
					 "0219 Ignore RSCN "
4026 4027
					 "Data: x%x x%x x%x x%x\n",
					 vport->fc_flag, payload_len,
4028
					 *lp, vport->fc_rscn_id_cnt);
J
James Smart 已提交
4029 4030 4031 4032 4033
			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);

4034
			lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb,
4035
				ndlp, NULL);
4036 4037 4038 4039
			return 0;
		}
	}

4040 4041 4042 4043 4044
	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);
		vport->fc_flag |= FC_RSCN_DISCOVERY;
4045 4046
		/* Send back ACC */
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
4047 4048 4049 4050 4051 4052 4053
		return 0;
	}
	/* Indicate we are walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 1;
	spin_unlock_irq(shost->host_lock);
	/* Get the array count after sucessfully have the token */
	rscn_cnt = vport->fc_rscn_id_cnt;
已提交
4054 4055 4056
	/* If we are already processing an RSCN, save the received
	 * RSCN payload buffer, cmdiocb->context2 to process later.
	 */
J
James Smart 已提交
4057
	if (vport->fc_flag & (FC_RSCN_MODE | FC_NDISC_ACTIVE)) {
J
James Smart 已提交
4058 4059 4060 4061
		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);

4062
		spin_lock_irq(shost->host_lock);
4063 4064
		vport->fc_flag |= FC_RSCN_DEFERRED;
		if ((rscn_cnt < FC_MAX_HOLD_RSCN) &&
J
James Smart 已提交
4065 4066 4067
		    !(vport->fc_flag & FC_RSCN_DISCOVERY)) {
			vport->fc_flag |= FC_RSCN_MODE;
			spin_unlock_irq(shost->host_lock);
4068 4069 4070 4071 4072 4073 4074
			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;
4075
				*cmd |= cpu_to_be32(payload_len + length);
4076 4077 4078 4079 4080 4081 4082 4083 4084 4085
				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
4086
			/* Deferred RSCN */
4087 4088 4089 4090 4091
			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
4092
		} else {
J
James Smart 已提交
4093 4094
			vport->fc_flag |= FC_RSCN_DISCOVERY;
			spin_unlock_irq(shost->host_lock);
已提交
4095
			/* ReDiscovery RSCN */
4096 4097 4098 4099 4100
			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
4101
		}
4102 4103
		/* Indicate we are done walking fc_rscn_id_list on this vport */
		vport->fc_rscn_flush = 0;
已提交
4104
		/* Send back ACC */
4105
		lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4106
		/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4107
		lpfc_rscn_recovery_check(vport);
4108
		spin_lock_irq(shost->host_lock);
4109
		vport->fc_flag &= ~FC_RSCN_DEFERRED;
4110
		spin_unlock_irq(shost->host_lock);
4111
		return 0;
已提交
4112
	}
J
James Smart 已提交
4113 4114 4115 4116
	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
4117 4118 4119 4120
	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;
4121 4122
	/* Indicate we are done walking fc_rscn_id_list on this vport */
	vport->fc_rscn_flush = 0;
已提交
4123 4124 4125 4126 4127
	/*
	 * If we zero, cmdiocb->context2, the calling routine will
	 * not try to free it.
	 */
	cmdiocb->context2 = NULL;
J
James Smart 已提交
4128
	lpfc_set_disctmo(vport);
已提交
4129
	/* Send back ACC */
4130
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4131
	/* send RECOVERY event for ALL nodes that match RSCN payload */
J
James Smart 已提交
4132 4133
	lpfc_rscn_recovery_check(vport);
	return lpfc_els_handle_rscn(vport);
已提交
4134 4135
}

4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151
/**
 * lpfc_els_handle_rscn: Handle rscn for a vport.
 * @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
4152
int
J
James Smart 已提交
4153
lpfc_els_handle_rscn(struct lpfc_vport *vport)
已提交
4154 4155
{
	struct lpfc_nodelist *ndlp;
J
James Smart 已提交
4156
	struct lpfc_hba *phba = vport->phba;
已提交
4157

4158 4159 4160 4161 4162 4163
	/* 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
4164
	/* Start timer for RSCN processing */
J
James Smart 已提交
4165
	lpfc_set_disctmo(vport);
已提交
4166 4167

	/* RSCN processed */
4168 4169 4170 4171
	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
4172 4173

	/* To process RSCN, first compare RSCN data with NameServer */
J
James Smart 已提交
4174
	vport->fc_ns_retry = 0;
4175 4176
	vport->num_disc_nodes = 0;

J
James Smart 已提交
4177
	ndlp = lpfc_findnode_did(vport, NameServer_DID);
4178 4179
	if (ndlp && NLP_CHK_NODE_ACT(ndlp)
	    && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
已提交
4180
		/* Good ndlp, issue CT Request to NameServer */
4181
		if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0) == 0)
已提交
4182 4183
			/* Wait for NameServer query cmpl before we can
			   continue */
4184
			return 1;
已提交
4185 4186 4187
	} else {
		/* If login to NameServer does not exist, issue one */
		/* Good status, issue PLOGI to NameServer */
J
James Smart 已提交
4188
		ndlp = lpfc_findnode_did(vport, NameServer_DID);
4189
		if (ndlp && NLP_CHK_NODE_ACT(ndlp))
已提交
4190 4191
			/* Wait for NameServer login cmpl before we can
			   continue */
4192
			return 1;
J
James Smart 已提交
4193

4194 4195 4196 4197 4198 4199 4200 4201
		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
4202
		} else {
4203 4204 4205 4206 4207
			ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
			if (!ndlp) {
				lpfc_els_flush_rscn(vport);
				return 0;
			}
J
James Smart 已提交
4208
			lpfc_nlp_init(vport, ndlp, NameServer_DID);
4209
			ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
4210
			lpfc_nlp_set_state(vport, ndlp, NLP_STE_PLOGI_ISSUE);
已提交
4211
		}
4212 4213 4214 4215 4216 4217
		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
4218 4219
	}

J
James Smart 已提交
4220
	lpfc_els_flush_rscn(vport);
4221
	return 0;
已提交
4222 4223
}

4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248
/**
 * lpfc_els_rcv_flogi: Process an unsolicited flogi 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 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
4249
static int
J
James Smart 已提交
4250
lpfc_els_rcv_flogi(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
4251
		   struct lpfc_nodelist *ndlp)
已提交
4252
{
J
James Smart 已提交
4253 4254
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_hba  *phba = vport->phba;
已提交
4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268
	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
4269
	lpfc_set_disctmo(vport);
已提交
4270 4271 4272 4273 4274 4275 4276

	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 */
4277 4278 4279 4280
		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);
4281
		return 1;
已提交
4282 4283 4284 4285
	}

	did = Fabric_DID;

J
James Smart 已提交
4286
	if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3))) {
已提交
4287 4288 4289 4290
		/* 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
4291
		rc = memcmp(&vport->fc_portname, &sp->portName,
4292
			    sizeof(struct lpfc_name));
已提交
4293 4294

		if (!rc) {
J
James Smart 已提交
4295 4296
			mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
			if (!mbox)
4297
				return 1;
J
James Smart 已提交
4298

已提交
4299 4300 4301 4302 4303 4304
			lpfc_linkdown(phba);
			lpfc_init_link(phba, mbox,
				       phba->cfg_topology,
				       phba->cfg_link_speed);
			mbox->mb.un.varInitLnk.lipsr_AL_PA = 0;
			mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4305
			mbox->vport = vport;
4306
			rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
4307
			lpfc_set_loopback_flag(phba);
已提交
4308
			if (rc == MBX_NOT_FINISHED) {
4309
				mempool_free(mbox, phba->mbox_mem_pool);
已提交
4310
			}
4311
			return 1;
4312
		} else if (rc > 0) {	/* greater than */
J
James Smart 已提交
4313 4314 4315
			spin_lock_irq(shost->host_lock);
			vport->fc_flag |= FC_PT2PT_PLOGI;
			spin_unlock_irq(shost->host_lock);
已提交
4316
		}
J
James Smart 已提交
4317 4318 4319 4320
		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
4321 4322 4323 4324 4325 4326
	} 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
4327 4328
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
4329
		return 1;
已提交
4330 4331 4332
	}

	/* Send back ACC */
4333
	lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
已提交
4334

4335
	return 0;
已提交
4336 4337
}

4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353
/**
 * lpfc_els_rcv_rnid: Process an unsolicited rnid 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 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
4354
static int
J
James Smart 已提交
4355 4356
lpfc_els_rcv_rnid(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378
{
	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
4379
		lpfc_els_rsp_rnid_acc(vport, rn->Format, cmdiocb, ndlp);
已提交
4380 4381 4382 4383 4384 4385 4386
		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
4387 4388
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
已提交
4389
	}
4390
	return 0;
已提交
4391 4392
}

4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405
/**
 * lpfc_els_rcv_lirr: Process an unsolicited lirr 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 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
4406
static int
J
James Smart 已提交
4407 4408
lpfc_els_rcv_lirr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
4409 4410 4411 4412 4413 4414 4415 4416
{
	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
4417
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4418 4419 4420
	return 0;
}

4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439
/**
 * lpfc_els_rsp_rps_acc: Completion callbk func for MBX_READ_LNK_STAT mbox cmd.
 * @phba: pointer to lpfc hba data structure.
 * @pmb: pointer to the driver internal queue element for mailbox command.
 *
 * This routine is the completion callback function for the MBX_READ_LNK_STAT
 * mailbox command. This callback function is to actually send the Accept
 * (ACC) response to a Read Port Status (RPS) unsolicited IOCB event. It
 * collects the link statistics from the completion of the MBX_READ_LNK_STAT
 * mailbox command, constructs the RPS response with the link statistics
 * collected, and then invokes the lpfc_sli_issue_iocb() routine to send ACC
 * response to the RPS.
 *
 * Note that, in lpfc_prep_els_iocb() routine, the reference count of ndlp
 * will be incremented by 1 for holding the ndlp and the reference to ndlp
 * will be stored into the context1 field of the IOCB for the completion
 * callback function to the RPS Accept Response ELS IOCB command.
 *
 **/
4440
static void
4441
lpfc_els_rsp_rps_acc(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
4442
{
J
James Smart 已提交
4443 4444
	struct lpfc_sli *psli = &phba->sli;
	struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457
	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;

	mb = &pmb->mb;

	ndlp = (struct lpfc_nodelist *) pmb->context2;
	xri = (uint16_t) ((unsigned long)(pmb->context1));
R
Randy Dunlap 已提交
4458 4459
	pmb->context1 = NULL;
	pmb->context2 = NULL;
4460 4461

	if (mb->mbxStatus) {
4462
		mempool_free(pmb, phba->mbox_mem_pool);
4463 4464 4465 4466
		return;
	}

	cmdsize = sizeof(RPS_RSP) + sizeof(uint32_t);
4467
	mempool_free(pmb, phba->mbox_mem_pool);
J
James Smart 已提交
4468 4469 4470
	elsiocb = lpfc_prep_els_iocb(phba->pport, 0, cmdsize,
				     lpfc_max_els_tries, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
4471 4472

	/* Decrement the ndlp reference count from previous mbox command */
4473
	lpfc_nlp_put(ndlp);
4474

4475
	if (!elsiocb)
4476 4477 4478 4479 4480 4481 4482
		return;

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

	pcmd = (uint8_t *) (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4483
	pcmd += sizeof(uint32_t); /* Skip past command */
4484 4485 4486 4487 4488 4489
	rps_rsp = (RPS_RSP *)pcmd;

	if (phba->fc_topology != TOPOLOGY_LOOP)
		status = 0x10;
	else
		status = 0x8;
J
James Smart 已提交
4490
	if (phba->pport->fc_flag & FC_FABRIC)
4491 4492 4493
		status |= 0x4;

	rps_rsp->rsvd1 = 0;
4494 4495 4496 4497 4498 4499 4500
	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);
4501
	/* Xmit ELS RPS ACC response tag <ulpIoTag> */
4502 4503 4504 4505 4506 4507
	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
4508
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4509
	phba->fc_stat.elsXmitACC++;
4510
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR)
4511 4512 4513 4514
		lpfc_els_free_iocb(phba, elsiocb);
	return;
}

4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532
/**
 * lpfc_els_rcv_rps: Process an unsolicited rps iocb.
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Read Port Status (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)
 **/
4533
static int
J
James Smart 已提交
4534 4535
lpfc_els_rcv_rps(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
已提交
4536
{
J
James Smart 已提交
4537
	struct lpfc_hba *phba = vport->phba;
已提交
4538
	uint32_t *lp;
4539 4540 4541 4542 4543 4544
	uint8_t flag;
	LPFC_MBOXQ_t *mbox;
	struct lpfc_dmabuf *pcmd;
	RPS *rps;
	struct ls_rjt stat;

4545
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
4546 4547 4548
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE))
		/* reject the unsolicited RPS request and done with it */
		goto reject_out;
4549 4550 4551 4552 4553 4554 4555 4556

	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
4557
	    ((flag == 2) && (memcmp(&rps->un.portName, &vport->fc_portname,
4558
				    sizeof(struct lpfc_name)) == 0))) {
J
James Smart 已提交
4559

4560 4561
		printk("Fix me....\n");
		dump_stack();
J
James Smart 已提交
4562 4563
		mbox = mempool_alloc(phba->mbox_mem_pool, GFP_ATOMIC);
		if (mbox) {
4564 4565
			lpfc_read_lnk_stat(phba, mbox);
			mbox->context1 =
4566
			    (void *)((unsigned long) cmdiocb->iocb.ulpContext);
4567
			mbox->context2 = lpfc_nlp_get(ndlp);
4568
			mbox->vport = vport;
4569
			mbox->mbox_cmpl = lpfc_els_rsp_rps_acc;
4570
			if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
4571
				!= MBX_NOT_FINISHED)
4572 4573
				/* Mbox completion will send ELS Response */
				return 0;
4574 4575 4576
			/* Decrement reference count used for the failed mbox
			 * command.
			 */
4577
			lpfc_nlp_put(ndlp);
4578 4579 4580
			mempool_free(mbox, phba->mbox_mem_pool);
		}
	}
4581 4582 4583

reject_out:
	/* issue rejection response */
4584 4585 4586 4587
	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
4588
	lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
4589 4590 4591
	return 0;
}

4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610
/**
 * lpfc_els_rsp_rpl_acc: Issue an accept rpl els command.
 * @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
 **/
4611
static int
J
James Smart 已提交
4612 4613
lpfc_els_rsp_rpl_acc(struct lpfc_vport *vport, uint16_t cmdsize,
		     struct lpfc_iocbq *oldiocb, struct lpfc_nodelist *ndlp)
4614
{
J
James Smart 已提交
4615 4616
	struct lpfc_hba *phba = vport->phba;
	IOCB_t *icmd, *oldcmd;
4617 4618
	RPL_RSP rpl_rsp;
	struct lpfc_iocbq *elsiocb;
J
James Smart 已提交
4619 4620
	struct lpfc_sli *psli = &phba->sli;
	struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
4621
	uint8_t *pcmd;
已提交
4622

J
James Smart 已提交
4623 4624
	elsiocb = lpfc_prep_els_iocb(vport, 0, cmdsize, oldiocb->retry, ndlp,
				     ndlp->nlp_DID, ELS_CMD_ACC);
4625

4626
	if (!elsiocb)
4627
		return 1;
4628

4629 4630 4631 4632 4633 4634
	icmd = &elsiocb->iocb;
	oldcmd = &oldiocb->iocb;
	icmd->ulpContext = oldcmd->ulpContext;	/* Xri */

	pcmd = (((struct lpfc_dmabuf *) elsiocb->context2)->virt);
	*((uint32_t *) (pcmd)) = ELS_CMD_ACC;
4635
	pcmd += sizeof(uint16_t);
4636 4637 4638 4639 4640 4641 4642
	*((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
4643 4644
	rpl_rsp.port_num_blk.portID = be32_to_cpu(vport->fc_myDID);
	memcpy(&rpl_rsp.port_num_blk.portName, &vport->fc_portname,
4645 4646 4647
	    sizeof(struct lpfc_name));
	memcpy(pcmd, &rpl_rsp, cmdsize - sizeof(uint32_t));
	/* Xmit ELS RPL ACC response tag <ulpIoTag> */
4648 4649 4650 4651 4652 4653 4654
	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
4655
	elsiocb->iocb_cmpl = lpfc_cmpl_els_rsp;
4656 4657 4658 4659 4660 4661 4662 4663
	phba->fc_stat.elsXmitACC++;
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		lpfc_els_free_iocb(phba, elsiocb);
		return 1;
	}
	return 0;
}

4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679
/**
 * lpfc_els_rcv_rpl: Process an unsolicited rpl iocb.
 * @vport: pointer to a host virtual N_Port data structure.
 * @cmdiocb: pointer to lpfc command iocb data structure.
 * @ndlp: pointer to a node-list data structure.
 *
 * This routine processes Read Port 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)
 **/
4680
static int
J
James Smart 已提交
4681 4682
lpfc_els_rcv_rpl(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *ndlp)
4683 4684 4685 4686 4687 4688 4689 4690
{
	struct lpfc_dmabuf *pcmd;
	uint32_t *lp;
	uint32_t maxsize;
	uint16_t cmdsize;
	RPL *rpl;
	struct ls_rjt stat;

4691 4692
	if ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
	    (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) {
4693
		/* issue rejection response */
4694 4695 4696 4697
		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
4698 4699
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
			NULL);
4700 4701
		/* rejected the unsolicited RPL request and done with it */
		return 0;
4702 4703
	}

已提交
4704 4705
	pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
	lp = (uint32_t *) pcmd->virt;
4706
	rpl = (RPL *) (lp + 1);
已提交
4707

4708
	maxsize = be32_to_cpu(rpl->maxsize);
已提交
4709

4710 4711 4712 4713 4714
	/* 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);
4715
	} else {
4716 4717
		cmdsize = sizeof(uint32_t) + maxsize * sizeof(uint32_t);
	}
J
James Smart 已提交
4718
	lpfc_els_rsp_rpl_acc(vport, cmdsize, cmdiocb, ndlp);
已提交
4719 4720 4721 4722

	return 0;
}

4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746
/**
 * lpfc_els_rcv_farp: Process an unsolicited farp request els command.
 * @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
4747
static int
J
James Smart 已提交
4748 4749
lpfc_els_rcv_farp(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		  struct lpfc_nodelist *ndlp)
已提交
4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764
{
	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> */
4765 4766
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0601 FARP-REQ received from DID x%x\n", did);
已提交
4767 4768
	/* We will only support match on WWPN or WWNN */
	if (fp->Mflags & ~(FARP_MATCH_NODE | FARP_MATCH_PORT)) {
4769
		return 0;
已提交
4770 4771 4772 4773 4774
	}

	cnt = 0;
	/* If this FARP command is searching for my portname */
	if (fp->Mflags & FARP_MATCH_PORT) {
J
James Smart 已提交
4775
		if (memcmp(&fp->RportName, &vport->fc_portname,
4776
			   sizeof(struct lpfc_name)) == 0)
已提交
4777 4778 4779 4780 4781
			cnt = 1;
	}

	/* If this FARP command is searching for my nodename */
	if (fp->Mflags & FARP_MATCH_NODE) {
J
James Smart 已提交
4782
		if (memcmp(&fp->RnodeName, &vport->fc_nodename,
4783
			   sizeof(struct lpfc_name)) == 0)
已提交
4784 4785 4786 4787 4788 4789 4790 4791
			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) {
4792
				ndlp->nlp_prev_state = ndlp->nlp_state;
J
James Smart 已提交
4793
				lpfc_nlp_set_state(vport, ndlp,
4794
						   NLP_STE_PLOGI_ISSUE);
J
James Smart 已提交
4795
				lpfc_issue_els_plogi(vport, ndlp->nlp_DID, 0);
已提交
4796 4797 4798
			}

			/* Send a FARP response to that node */
J
James Smart 已提交
4799 4800
			if (fp->Rflags & FARP_REQUEST_FARPR)
				lpfc_issue_els_farpr(vport, did, 0);
已提交
4801 4802
		}
	}
4803
	return 0;
已提交
4804 4805
}

4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819
/**
 * lpfc_els_rcv_farpr: Process an unsolicited farp response 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 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
4820
static int
J
James Smart 已提交
4821 4822
lpfc_els_rcv_farpr(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		   struct lpfc_nodelist  *ndlp)
已提交
4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835
{
	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> */
4836 4837
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
			 "0600 FARP-RSP received from DID x%x\n", did);
已提交
4838
	/* ACCEPT the Farp resp request */
4839
	lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
已提交
4840 4841 4842 4843

	return 0;
}

4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862
/**
 * lpfc_els_rcv_fan: Process an unsolicited fan iocb command.
 * @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
4863
static int
J
James Smart 已提交
4864 4865
lpfc_els_rcv_fan(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
		 struct lpfc_nodelist *fan_ndlp)
已提交
4866
{
4867
	struct lpfc_hba *phba = vport->phba;
已提交
4868
	uint32_t *lp;
4869
	FAN *fp;
已提交
4870

4871 4872 4873
	lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, "0265 FAN received\n");
	lp = (uint32_t *)((struct lpfc_dmabuf *)cmdiocb->context2)->virt;
	fp = (FAN *) ++lp;
4874
	/* FAN received; Fan does not have a reply sequence */
4875 4876
	if ((vport == phba->pport) &&
	    (vport->port_state == LPFC_LOCAL_CFG_LINK)) {
4877
		if ((memcmp(&phba->fc_fabparam.nodeName, &fp->FnodeName,
4878
			    sizeof(struct lpfc_name))) ||
4879
		    (memcmp(&phba->fc_fabparam.portName, &fp->FportName,
4880 4881
			    sizeof(struct lpfc_name)))) {
			/* This port has switched fabrics. FLOGI is required */
J
James Smart 已提交
4882
			lpfc_initial_flogi(vport);
4883 4884 4885 4886
		} else {
			/* FAN verified - skip FLOGI */
			vport->fc_myDID = vport->fc_prevDID;
			lpfc_issue_fabric_reglogin(vport);
4887
		}
已提交
4888
	}
4889
	return 0;
已提交
4890 4891
}

4892 4893 4894 4895 4896 4897 4898 4899 4900 4901
/**
 * lpfc_els_timeout: Handler funciton to the els timer.
 * @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
4902 4903 4904
void
lpfc_els_timeout(unsigned long ptr)
{
J
James Smart 已提交
4905 4906
	struct lpfc_vport *vport = (struct lpfc_vport *) ptr;
	struct lpfc_hba   *phba = vport->phba;
4907
	uint32_t tmo_posted;
已提交
4908 4909
	unsigned long iflag;

J
James Smart 已提交
4910
	spin_lock_irqsave(&vport->work_port_lock, iflag);
4911 4912
	tmo_posted = vport->work_port_events & WORKER_ELS_TMO;
	if (!tmo_posted)
J
James Smart 已提交
4913
		vport->work_port_events |= WORKER_ELS_TMO;
4914
	spin_unlock_irqrestore(&vport->work_port_lock, iflag);
4915

4916 4917
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
已提交
4918 4919 4920
	return;
}

4921 4922 4923 4924 4925 4926 4927 4928 4929
/**
 * lpfc_els_timeout_handler: Process an els timeout event.
 * @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
4930
void
J
James Smart 已提交
4931
lpfc_els_timeout_handler(struct lpfc_vport *vport)
已提交
4932
{
J
James Smart 已提交
4933
	struct lpfc_hba  *phba = vport->phba;
已提交
4934 4935 4936 4937
	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
4938
	uint32_t els_command = 0;
已提交
4939
	uint32_t timeout;
J
James Smart 已提交
4940
	uint32_t remote_ID = 0xffffffff;
已提交
4941

J
James Smart 已提交
4942
	spin_lock_irq(&phba->hbalock);
已提交
4943 4944 4945 4946 4947 4948 4949
	timeout = (uint32_t)(phba->fc_ratov << 1);

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

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

J
James Smart 已提交
4950 4951 4952
		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
4953
			continue;
J
James Smart 已提交
4954 4955 4956 4957

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

已提交
4958
		pcmd = (struct lpfc_dmabuf *) piocb->context2;
J
James Smart 已提交
4959 4960
		if (pcmd)
			els_command = *(uint32_t *) (pcmd->virt);
已提交
4961

4962 4963 4964 4965 4966
		if (els_command == ELS_CMD_FARP ||
		    els_command == ELS_CMD_FARPR ||
		    els_command == ELS_CMD_FDISC)
			continue;

已提交
4967
		if (piocb->drvrTimeout > 0) {
4968
			if (piocb->drvrTimeout >= timeout)
已提交
4969
				piocb->drvrTimeout -= timeout;
4970
			else
已提交
4971 4972 4973 4974
				piocb->drvrTimeout = 0;
			continue;
		}

J
James Smart 已提交
4975 4976
		remote_ID = 0xffffffff;
		if (cmd->ulpCommand != CMD_GEN_REQUEST64_CR)
已提交
4977
			remote_ID = cmd->un.elsreq64.remoteID;
J
James Smart 已提交
4978 4979 4980
		else {
			struct lpfc_nodelist *ndlp;
			ndlp = __lpfc_findnode_rpi(vport, cmd->ulpContext);
4981
			if (ndlp && NLP_CHK_NODE_ACT(ndlp))
J
James Smart 已提交
4982
				remote_ID = ndlp->nlp_DID;
已提交
4983
		}
4984 4985 4986 4987
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0127 ELS timeout Data: x%x x%x x%x "
				 "x%x\n", els_command,
				 remote_ID, cmd->ulpCommand, cmd->ulpIoTag);
4988
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
4989
	}
J
James Smart 已提交
4990
	spin_unlock_irq(&phba->hbalock);
4991

J
James Smart 已提交
4992 4993
	if (phba->sli.ring[LPFC_ELS_RING].txcmplq_cnt)
		mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
已提交
4994 4995
}

4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015
/**
 * lpfc_els_flush_cmd: Clean up the outstanding els commands to a vport.
 * @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
5016
void
J
James Smart 已提交
5017
lpfc_els_flush_cmd(struct lpfc_vport *vport)
已提交
5018
{
5019
	LIST_HEAD(completions);
J
James Smart 已提交
5020
	struct lpfc_hba  *phba = vport->phba;
5021
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
已提交
5022 5023
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd = NULL;
5024 5025

	lpfc_fabric_abort_vport(vport);
已提交
5026

J
James Smart 已提交
5027
	spin_lock_irq(&phba->hbalock);
已提交
5028 5029 5030 5031 5032 5033 5034 5035
	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 */
5036 5037 5038 5039
		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
5040 5041
			continue;

J
James Smart 已提交
5042 5043 5044
		if (piocb->vport != vport)
			continue;

5045
		list_move_tail(&piocb->list, &completions);
5046
		pring->txq_cnt--;
已提交
5047 5048 5049 5050 5051 5052 5053
	}

	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
5054 5055 5056
		if (piocb->vport != vport)
			continue;

5057
		lpfc_sli_issue_abort_iotag(phba, pring, piocb);
已提交
5058
	}
J
James Smart 已提交
5059
	spin_unlock_irq(&phba->hbalock);
5060

J
James Smart 已提交
5061
	while (!list_empty(&completions)) {
5062 5063
		piocb = list_get_first(&completions, struct lpfc_iocbq, list);
		cmd = &piocb->iocb;
5064
		list_del_init(&piocb->list);
5065

J
James Smart 已提交
5066 5067 5068
		if (!piocb->iocb_cmpl)
			lpfc_sli_release_iocbq(phba, piocb);
		else {
5069 5070 5071
			cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
			cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
			(piocb->iocb_cmpl) (phba, piocb, piocb);
J
James Smart 已提交
5072
		}
5073 5074
	}

已提交
5075 5076 5077
	return;
}

5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094
/**
 * lpfc_els_flush_all_cmd: Clean up all the outstanding els commands to a HBA.
 * @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.
 **/
5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138
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);
	while (!list_empty(&completions)) {
		piocb = list_get_first(&completions, struct lpfc_iocbq, list);
		cmd = &piocb->iocb;
		list_del_init(&piocb->list);
		if (!piocb->iocb_cmpl)
			lpfc_sli_release_iocbq(phba, piocb);
		else {
			cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
			cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
			(piocb->iocb_cmpl) (phba, piocb, piocb);
		}
	}
	return;
}

5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181
/**
 * lpfc_send_els_failure_event: Posts an ELS command failure event.
 * @phba: Pointer to hba context object.
 * @cmdiocbp: Pointer to command iocb which reported error.
 * @rspiocbp: Pointer to response iocb which reported error.
 *
 * This function sends an event when there is an ELS command
 * failure.
 **/
void
lpfc_send_els_failure_event(struct lpfc_hba *phba,
			struct lpfc_iocbq *cmdiocbp,
			struct lpfc_iocbq *rspiocbp)
{
	struct lpfc_vport *vport = cmdiocbp->vport;
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_lsrjt_event lsrjt_event;
	struct lpfc_fabric_event_header fabric_event;
	struct ls_rjt stat;
	struct lpfc_nodelist *ndlp;
	uint32_t *pcmd;

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

	if (rspiocbp->iocb.ulpStatus == IOSTAT_LS_RJT) {
		lsrjt_event.header.event_type = FC_REG_ELS_EVENT;
		lsrjt_event.header.subcategory = LPFC_EVENT_LSRJT_RCV;
		memcpy(lsrjt_event.header.wwpn, &ndlp->nlp_portname,
			sizeof(struct lpfc_name));
		memcpy(lsrjt_event.header.wwnn, &ndlp->nlp_nodename,
			sizeof(struct lpfc_name));
		pcmd = (uint32_t *) (((struct lpfc_dmabuf *)
			cmdiocbp->context2)->virt);
		lsrjt_event.command = *pcmd;
		stat.un.lsRjtError = be32_to_cpu(rspiocbp->iocb.un.ulpWord[4]);
		lsrjt_event.reason_code = stat.un.b.lsRjtRsnCode;
		lsrjt_event.explanation = stat.un.b.lsRjtRsnCodeExp;
		fc_host_post_vendor_event(shost,
			fc_get_event_number(),
			sizeof(lsrjt_event),
			(char *)&lsrjt_event,
5182
			LPFC_NL_VENDOR_ID);
5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199
		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,
5200
			LPFC_NL_VENDOR_ID);
5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217
		return;
	}

}

/**
 * lpfc_send_els_event: Posts unsolicited els event.
 * @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,
5218
		    uint32_t *payload)
5219
{
5220 5221
	struct lpfc_els_event_header *els_data = NULL;
	struct lpfc_logo_event *logo_data = NULL;
5222 5223
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244
	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) {
5245
	case ELS_CMD_PLOGI:
5246
		els_data->subcategory = LPFC_EVENT_PLOGI_RCV;
5247 5248
		break;
	case ELS_CMD_PRLO:
5249
		els_data->subcategory = LPFC_EVENT_PRLO_RCV;
5250 5251
		break;
	case ELS_CMD_ADISC:
5252 5253 5254 5255 5256 5257 5258
		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));
5259 5260 5261 5262
		break;
	default:
		return;
	}
5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279
	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);
	}
5280 5281 5282 5283 5284

	return;
}


5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298
/**
 * lpfc_els_unsol_buffer: Process an unsolicited event data buffer.
 * @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.
 **/
5299 5300
static void
lpfc_els_unsol_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5301
		      struct lpfc_vport *vport, struct lpfc_iocbq *elsiocb)
已提交
5302
{
5303
	struct Scsi_Host  *shost;
已提交
5304 5305
	struct lpfc_nodelist *ndlp;
	struct ls_rjt stat;
5306
	uint32_t *payload;
J
James Smart 已提交
5307
	uint32_t cmd, did, newnode, rjt_err = 0;
5308
	IOCB_t *icmd = &elsiocb->iocb;
已提交
5309

5310
	if (!vport || !(elsiocb->context2))
已提交
5311
		goto dropit;
J
James Smart 已提交
5312

已提交
5313
	newnode = 0;
5314 5315
	payload = ((struct lpfc_dmabuf *)elsiocb->context2)->virt;
	cmd = *payload;
5316
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) == 0)
5317
		lpfc_post_buffer(phba, pring, 1);
已提交
5318

J
James Smart 已提交
5319 5320 5321 5322 5323
	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
5324
		goto dropit;
J
James Smart 已提交
5325
	}
已提交
5326 5327

	/* Check to see if link went down during discovery */
5328
	if (lpfc_els_chk_latt(vport))
已提交
5329 5330
		goto dropit;

5331 5332 5333 5334
	/* Ignore traffic recevied during vport shutdown. */
	if (vport->load_flag & FC_UNLOADING)
		goto dropit;

J
James Smart 已提交
5335
	ndlp = lpfc_findnode_did(vport, did);
5336
	if (!ndlp) {
已提交
5337
		/* Cannot find existing Fabric ndlp, so allocate a new one */
5338
		ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
5339
		if (!ndlp)
已提交
5340 5341
			goto dropit;

J
James Smart 已提交
5342
		lpfc_nlp_init(vport, ndlp, did);
5343
		lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
已提交
5344
		newnode = 1;
5345
		if ((did & Fabric_DID_MASK) == Fabric_DID_MASK)
已提交
5346
			ndlp->nlp_type |= NLP_FABRIC;
5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362
	} 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;
5363
	}
已提交
5364 5365

	phba->fc_stat.elsRcvFrame++;
5366

5367
	elsiocb->context1 = lpfc_nlp_get(ndlp);
J
James Smart 已提交
5368
	elsiocb->vport = vport;
已提交
5369 5370 5371 5372 5373

	if ((cmd & ELS_CMD_MASK) == ELS_CMD_RSCN) {
		cmd &= ELS_CMD_MASK;
	}
	/* ELS command <elsCmd> received from NPORT <did> */
5374 5375 5376
	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
5377 5378
	switch (cmd) {
	case ELS_CMD_PLOGI:
J
James Smart 已提交
5379 5380 5381 5382
		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
5383
		phba->fc_stat.elsRcvPLOGI++;
J
James Smart 已提交
5384 5385
		ndlp = lpfc_plogi_confirm_nport(phba, payload, ndlp);

5386
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5387
		if (vport->port_state < LPFC_DISC_AUTH) {
5388 5389 5390 5391 5392 5393 5394 5395 5396
			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
5397
		}
5398 5399 5400 5401 5402 5403

		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
5404 5405
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PLOGI);
J
James Smart 已提交
5406

已提交
5407 5408
		break;
	case ELS_CMD_FLOGI:
J
James Smart 已提交
5409 5410 5411 5412
		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
5413
		phba->fc_stat.elsRcvFLOGI++;
5414
		lpfc_els_rcv_flogi(vport, elsiocb, ndlp);
5415
		if (newnode)
5416
			lpfc_nlp_put(ndlp);
已提交
5417 5418
		break;
	case ELS_CMD_LOGO:
J
James Smart 已提交
5419 5420 5421 5422
		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
5423
		phba->fc_stat.elsRcvLOGO++;
5424
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5425
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5426
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5427 5428
			break;
		}
J
James Smart 已提交
5429
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_LOGO);
已提交
5430 5431
		break;
	case ELS_CMD_PRLO:
J
James Smart 已提交
5432 5433 5434 5435
		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
5436
		phba->fc_stat.elsRcvPRLO++;
5437
		lpfc_send_els_event(vport, ndlp, payload);
J
James Smart 已提交
5438
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5439
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5440 5441
			break;
		}
J
James Smart 已提交
5442
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLO);
已提交
5443 5444 5445
		break;
	case ELS_CMD_RSCN:
		phba->fc_stat.elsRcvRSCN++;
5446
		lpfc_els_rcv_rscn(vport, elsiocb, ndlp);
5447
		if (newnode)
5448
			lpfc_nlp_put(ndlp);
已提交
5449 5450
		break;
	case ELS_CMD_ADISC:
J
James Smart 已提交
5451 5452 5453 5454
		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);

5455
		lpfc_send_els_event(vport, ndlp, payload);
已提交
5456
		phba->fc_stat.elsRcvADISC++;
J
James Smart 已提交
5457
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5458
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5459 5460
			break;
		}
J
James Smart 已提交
5461 5462
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_ADISC);
已提交
5463 5464
		break;
	case ELS_CMD_PDISC:
J
James Smart 已提交
5465 5466 5467 5468
		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
5469
		phba->fc_stat.elsRcvPDISC++;
J
James Smart 已提交
5470
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5471
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5472 5473
			break;
		}
J
James Smart 已提交
5474 5475
		lpfc_disc_state_machine(vport, ndlp, elsiocb,
					NLP_EVT_RCV_PDISC);
已提交
5476 5477
		break;
	case ELS_CMD_FARPR:
J
James Smart 已提交
5478 5479 5480 5481
		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
5482
		phba->fc_stat.elsRcvFARPR++;
J
James Smart 已提交
5483
		lpfc_els_rcv_farpr(vport, elsiocb, ndlp);
已提交
5484 5485
		break;
	case ELS_CMD_FARP:
J
James Smart 已提交
5486 5487 5488 5489
		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
5490
		phba->fc_stat.elsRcvFARP++;
J
James Smart 已提交
5491
		lpfc_els_rcv_farp(vport, elsiocb, ndlp);
已提交
5492 5493
		break;
	case ELS_CMD_FAN:
J
James Smart 已提交
5494 5495 5496 5497
		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
5498
		phba->fc_stat.elsRcvFAN++;
J
James Smart 已提交
5499
		lpfc_els_rcv_fan(vport, elsiocb, ndlp);
已提交
5500 5501
		break;
	case ELS_CMD_PRLI:
J
James Smart 已提交
5502 5503 5504 5505
		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
5506
		phba->fc_stat.elsRcvPRLI++;
J
James Smart 已提交
5507
		if (vport->port_state < LPFC_DISC_AUTH) {
J
James Smart 已提交
5508
			rjt_err = LSRJT_UNABLE_TPC;
已提交
5509 5510
			break;
		}
J
James Smart 已提交
5511
		lpfc_disc_state_machine(vport, ndlp, elsiocb, NLP_EVT_RCV_PRLI);
已提交
5512
		break;
5513
	case ELS_CMD_LIRR:
J
James Smart 已提交
5514 5515 5516 5517
		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);

5518
		phba->fc_stat.elsRcvLIRR++;
J
James Smart 已提交
5519
		lpfc_els_rcv_lirr(vport, elsiocb, ndlp);
5520
		if (newnode)
5521
			lpfc_nlp_put(ndlp);
5522 5523
		break;
	case ELS_CMD_RPS:
J
James Smart 已提交
5524 5525 5526 5527
		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);

5528
		phba->fc_stat.elsRcvRPS++;
J
James Smart 已提交
5529
		lpfc_els_rcv_rps(vport, elsiocb, ndlp);
5530
		if (newnode)
5531
			lpfc_nlp_put(ndlp);
5532 5533
		break;
	case ELS_CMD_RPL:
J
James Smart 已提交
5534 5535 5536 5537
		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);

5538
		phba->fc_stat.elsRcvRPL++;
J
James Smart 已提交
5539
		lpfc_els_rcv_rpl(vport, elsiocb, ndlp);
5540
		if (newnode)
5541
			lpfc_nlp_put(ndlp);
5542
		break;
已提交
5543
	case ELS_CMD_RNID:
J
James Smart 已提交
5544 5545 5546 5547
		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
5548
		phba->fc_stat.elsRcvRNID++;
J
James Smart 已提交
5549
		lpfc_els_rcv_rnid(vport, elsiocb, ndlp);
5550
		if (newnode)
5551
			lpfc_nlp_put(ndlp);
已提交
5552 5553
		break;
	default:
J
James Smart 已提交
5554 5555 5556 5557
		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
5558
		/* Unsupported ELS command, reject */
J
James Smart 已提交
5559
		rjt_err = LSRJT_INVALID_CMD;
已提交
5560 5561

		/* Unknown ELS command <elsCmd> received from NPORT <did> */
5562 5563 5564
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0115 Unknown ELS command x%x "
				 "received from NPORT x%x\n", cmd, did);
5565
		if (newnode)
5566
			lpfc_nlp_put(ndlp);
已提交
5567 5568 5569 5570 5571
		break;
	}

	/* check if need to LS_RJT received ELS cmd */
	if (rjt_err) {
5572
		memset(&stat, 0, sizeof(stat));
J
James Smart 已提交
5573
		stat.un.b.lsRjtRsnCode = rjt_err;
5574
		stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
J
James Smart 已提交
5575 5576
		lpfc_els_rsp_reject(vport, stat.un.lsRjtError, elsiocb, ndlp,
			NULL);
已提交
5577 5578
	}

5579 5580
	lpfc_nlp_put(elsiocb->context1);
	elsiocb->context1 = NULL;
5581 5582 5583
	return;

dropit:
5584 5585
	if (vport && !(vport->load_flag & FC_UNLOADING))
		lpfc_printf_log(phba, KERN_ERR, LOG_ELS,
5586
			"(%d):0111 Dropping received ELS cmd "
5587
			"Data: x%x x%x x%x\n",
5588
			vport->vpi, icmd->ulpStatus,
5589
			icmd->un.ulpWord[4], icmd->ulpTimeout);
5590 5591 5592
	phba->fc_stat.elsRcvDrop++;
}

5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603 5604 5605
/**
 * lpfc_find_vport_by_vpid: Find a vport on a HBA through vport identifier.
 * @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.
 **/
5606 5607 5608 5609
static struct lpfc_vport *
lpfc_find_vport_by_vpid(struct lpfc_hba *phba, uint16_t vpi)
{
	struct lpfc_vport *vport;
5610
	unsigned long flags;
5611

5612
	spin_lock_irqsave(&phba->hbalock, flags);
5613
	list_for_each_entry(vport, &phba->port_list, listentry) {
5614 5615
		if (vport->vpi == vpi) {
			spin_unlock_irqrestore(&phba->hbalock, flags);
5616
			return vport;
5617
		}
5618
	}
5619
	spin_unlock_irqrestore(&phba->hbalock, flags);
5620 5621
	return NULL;
}
5622

5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634
/**
 * lpfc_els_unsol_event: Process an unsolicited event from an els sli ring.
 * @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.
 **/
5635 5636 5637 5638 5639 5640 5641
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;
5642 5643 5644
	struct lpfc_dmabuf *bdeBuf1 = elsiocb->context2;
	struct lpfc_dmabuf *bdeBuf2 = elsiocb->context3;

5645
	elsiocb->context1 = NULL;
5646 5647
	elsiocb->context2 = NULL;
	elsiocb->context3 = NULL;
5648

5649 5650 5651 5652
	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) {
5653 5654
		phba->fc_stat.NoRcvBuf++;
		/* Not enough posted buffers; Try posting more buffers */
5655
		if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
5656
			lpfc_post_buffer(phba, pring, 0);
5657 5658 5659
		return;
	}

5660 5661 5662 5663 5664 5665 5666 5667 5668 5669
	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;
		else {
			uint16_t vpi = icmd->unsli3.rcvsli3.vpi;
			vport = lpfc_find_vport_by_vpid(phba, vpi);
		}
	}
5670 5671 5672
	/* If there are no BDEs associated
	 * with this IOCB, there is nothing to do.
	 */
5673 5674 5675
	if (icmd->ulpBdeCount == 0)
		return;

5676 5677 5678
	/* type of ELS cmd is first 32bit word
	 * in packet
	 */
5679
	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
5680
		elsiocb->context2 = bdeBuf1;
5681 5682 5683
	} else {
		paddr = getPaddr(icmd->un.cont64[0].addrHigh,
				 icmd->un.cont64[0].addrLow);
5684 5685
		elsiocb->context2 = lpfc_sli_ringpostbuf_get(phba, pring,
							     paddr);
5686 5687
	}

5688 5689 5690 5691 5692
	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
5693
	if (elsiocb->context2) {
5694 5695
		lpfc_in_buf_free(phba, (struct lpfc_dmabuf *)elsiocb->context2);
		elsiocb->context2 = NULL;
已提交
5696
	}
5697 5698

	/* RCV_ELS64_CX provide for 2 BDEs - process 2nd if included */
5699
	if ((phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) &&
5700
	    icmd->ulpBdeCount == 2) {
5701 5702
		elsiocb->context2 = bdeBuf2;
		lpfc_els_unsol_buffer(phba, pring, vport, elsiocb);
5703 5704
		/* free mp if we are done with it */
		if (elsiocb->context2) {
5705 5706 5707 5708 5709 5710
			lpfc_in_buf_free(phba, elsiocb->context2);
			elsiocb->context2 = NULL;
		}
	}
}

5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723
/**
 * lpfc_do_scr_ns_plogi: Issue a plogi to the name server for scr.
 * @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.
 **/
5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737
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);
5738 5739
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					 "0251 NameServer login: no memory\n");
5740 5741 5742
			return;
		}
		lpfc_nlp_init(vport, ndlp, NameServer_DID);
5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754
	} 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;
		}
5755
	}
5756
	ndlp->nlp_type |= NLP_FABRIC;
5757 5758 5759 5760 5761

	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);
5762 5763
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0252 Cannot issue NameServer login\n");
5764 5765 5766
		return;
	}

5767
	if (vport->cfg_fdmi_on) {
5768 5769 5770 5771 5772
		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;
5773 5774
			lpfc_nlp_set_state(vport, ndlp_fdmi,
				NLP_STE_PLOGI_ISSUE);
5775 5776 5777 5778 5779 5780 5781
			lpfc_issue_els_plogi(vport, ndlp_fdmi->nlp_DID,
					     0);
		}
	}
	return;
}

5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793
/**
 * lpfc_cmpl_reg_new_vport: Completion callback function to register new vport.
 * @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).
 **/
5794 5795 5796 5797 5798 5799 5800 5801
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;
	MAILBOX_t *mb = &pmb->mb;

5802
	spin_lock_irq(shost->host_lock);
5803
	vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI;
5804
	spin_unlock_irq(shost->host_lock);
5805 5806

	if (mb->mbxStatus) {
5807 5808 5809
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				 "0915 Register VPI failed: 0x%x\n",
				 mb->mbxStatus);
5810 5811 5812 5813

		switch (mb->mbxStatus) {
		case 0x11:	/* unsupported feature */
		case 0x9603:	/* max_vpi exceeded */
5814
		case 0x9602:	/* Link event since CLEAR_LA */
5815 5816 5817 5818 5819 5820 5821 5822 5823 5824
			/* 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;
		default:
			/* Try to recover from this error */
			lpfc_mbx_unreg_vpi(vport);
5825
			spin_lock_irq(shost->host_lock);
5826
			vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
5827
			spin_unlock_irq(shost->host_lock);
5828 5829 5830 5831
			if (vport->port_type == LPFC_PHYSICAL_PORT)
				lpfc_initial_flogi(vport);
			else
				lpfc_initial_fdisc(vport);
5832 5833 5834 5835 5836 5837 5838 5839 5840
			break;
		}

	} else {
		if (vport == phba->pport)
			lpfc_issue_fabric_reglogin(vport);
		else
			lpfc_do_scr_ns_plogi(phba, vport);
	}
5841 5842 5843 5844 5845 5846

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

5847 5848 5849 5850
	mempool_free(pmb, phba->mbox_mem_pool);
	return;
}

5851 5852 5853 5854 5855 5856 5857 5858 5859
/**
 * lpfc_register_new_vport: Register a new vport with a HBA.
 * @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.
 **/
A
Adrian Bunk 已提交
5860
static void
5861 5862 5863
lpfc_register_new_vport(struct lpfc_hba *phba, struct lpfc_vport *vport,
			struct lpfc_nodelist *ndlp)
{
5864
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5865 5866 5867 5868 5869 5870 5871 5872
	LPFC_MBOXQ_t *mbox;

	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (mbox) {
		lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, mbox);
		mbox->vport = vport;
		mbox->context2 = lpfc_nlp_get(ndlp);
		mbox->mbox_cmpl = lpfc_cmpl_reg_new_vport;
5873
		if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
5874
		    == MBX_NOT_FINISHED) {
5875 5876 5877 5878
			/* mailbox command not success, decrement ndlp
			 * reference count for this command
			 */
			lpfc_nlp_put(ndlp);
5879 5880
			mempool_free(mbox, phba->mbox_mem_pool);

5881 5882
			lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				"0253 Register VPI: Can't send mbox\n");
5883
			goto mbox_err_exit;
5884 5885
		}
	} else {
5886 5887
		lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
				 "0254 Register VPI: no memory\n");
5888
		goto mbox_err_exit;
5889
	}
5890 5891 5892 5893 5894 5895 5896 5897
	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;
5898 5899
}

5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919
/**
 * lpfc_cmpl_els_fdisc: Completion function for fdisc iocb command.
 * @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).
 **/
5920 5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931
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;

5932 5933 5934 5935
	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);
5936 5937 5938 5939 5940 5941 5942 5943
	/* 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
5944 5945 5946 5947
	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);

5948 5949 5950 5951 5952
	if (irsp->ulpStatus) {
		/* Check for retry */
		if (lpfc_els_retry(phba, cmdiocb, rspiocb))
			goto out;
		/* FDISC failed */
5953
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
5954
				 "0126 FDISC failed. (%d/%d)\n",
5955
				 irsp->ulpStatus, irsp->un.ulpWord[4]);
5956 5957
		goto fdisc_failed;
	}
5958 5959 5960 5961 5962
		if (vport->fc_vport->vport_state == FC_VPORT_INITIALIZING)
			lpfc_vport_set_state(vport, FC_VPORT_FAILED);
		lpfc_nlp_put(ndlp);
		/* giving up on FDISC. Cancel discovery timer */
		lpfc_can_disctmo(vport);
5963 5964 5965 5966 5967
	spin_lock_irq(shost->host_lock);
	vport->fc_flag |= FC_FABRIC;
	if (vport->phba->fc_topology == TOPOLOGY_LOOP)
		vport->fc_flag |=  FC_PUBLIC_LOOP;
	spin_unlock_irq(shost->host_lock);
5968

5969 5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982
	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;
5983
			spin_lock_irq(shost->host_lock);
5984
			np->nlp_flag &= ~NLP_NPR_ADISC;
5985
			spin_unlock_irq(shost->host_lock);
5986
			lpfc_unreg_rpi(vport, np);
5987
		}
5988 5989 5990 5991
		lpfc_mbx_unreg_vpi(vport);
		spin_lock_irq(shost->host_lock);
		vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
		spin_unlock_irq(shost->host_lock);
5992 5993
	}

5994 5995 5996 5997 5998 5999 6000 6001 6002 6003
	if (vport->fc_flag & FC_VPORT_NEEDS_REG_VPI)
		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);
6004 6005 6006 6007
out:
	lpfc_els_free_iocb(phba, cmdiocb);
}

6008 6009 6010 6011 6012 6013 6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024 6025 6026 6027
/**
 * lpfc_issue_els_fdisc: Issue a fdisc iocb command.
 * @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
6028
static int
6029 6030 6031 6032 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 6045
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;

	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);
6046 6047
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0255 Issue FDISC: no IOCB\n");
6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059 6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084
		return 1;
	}

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

	/* For FDISC, Let FDISC rsp set the NPortID for this VPI */
	icmd->ulpCt_h = 1;
	icmd->ulpCt_l = 0;

	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
6085 6086 6087 6088
	lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
		"Issue FDISC:     did:x%x",
		did, 0, 0);

6089 6090 6091 6092
	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);
6093 6094
		lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
				 "0256 Issue FDISC: Cannot send IOCB\n");
6095 6096 6097 6098 6099 6100 6101
		return 1;
	}
	lpfc_vport_set_state(vport, FC_VPORT_INITIALIZING);
	vport->port_state = LPFC_FDISC;
	return 0;
}

6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115
/**
 * lpfc_cmpl_els_npiv_logo: Completion function with vport logo.
 * @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.
 **/
6116 6117 6118 6119 6120
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
6121
	IOCB_t *irsp;
6122 6123
	struct lpfc_nodelist *ndlp;
	ndlp = (struct lpfc_nodelist *)cmdiocb->context1;
J
James Smart 已提交
6124 6125 6126 6127 6128

	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);
6129 6130 6131

	lpfc_els_free_iocb(phba, cmdiocb);
	vport->unreg_vpi_cmpl = VPORT_ERROR;
6132 6133 6134

	/* Trigger the release of the ndlp after logo */
	lpfc_nlp_put(ndlp);
6135 6136
}

6137 6138 6139 6140 6141 6142 6143 6144 6145 6146 6147 6148 6149 6150 6151 6152
/**
 * lpfc_issue_els_npiv_logo: Issue a logo off a vport.
 * @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
 **/
6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179
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;
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
	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
6180 6181 6182 6183
	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);

6184 6185 6186 6187 6188 6189 6190 6191 6192 6193 6194 6195 6196 6197
	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);
	if (lpfc_sli_issue_iocb(phba, pring, elsiocb, 0) == IOCB_ERROR) {
		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;
}

6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208
/**
 * lpfc_fabric_block_timeout: Handler function to the fabric block timer.
 * @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.
 **/
6209 6210 6211 6212 6213 6214
void
lpfc_fabric_block_timeout(unsigned long ptr)
{
	struct lpfc_hba  *phba = (struct lpfc_hba *) ptr;
	unsigned long iflags;
	uint32_t tmo_posted;
6215

6216 6217 6218 6219 6220 6221
	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);

6222 6223 6224
	if (!tmo_posted)
		lpfc_worker_wake_up(phba);
	return;
6225 6226
}

6227 6228 6229 6230 6231 6232 6233 6234 6235 6236
/**
 * lpfc_resume_fabric_iocbs: Issue a fabric iocb from driver internal list.
 * @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.
 **/
6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248
static void
lpfc_resume_fabric_iocbs(struct lpfc_hba *phba)
{
	struct lpfc_iocbq *iocb;
	unsigned long iflags;
	int ret;
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
	IOCB_t *cmd;

repeat:
	iocb = NULL;
	spin_lock_irqsave(&phba->hbalock, iflags);
6249
	/* Post any pending iocb to the SLI layer */
6250 6251 6252 6253
	if (atomic_read(&phba->fabric_iocb_count) == 0) {
		list_remove_head(&phba->fabric_iocb_list, iocb, typeof(*iocb),
				 list);
		if (iocb)
6254
			/* Increment fabric iocb count to hold the position */
6255 6256 6257 6258 6259 6260 6261 6262
			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
6263 6264 6265 6266
		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched1:   ste:x%x",
			iocb->vport->port_state, 0, 0);

6267 6268 6269 6270 6271 6272 6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285
		ret = lpfc_sli_issue_iocb(phba, pring, iocb, 0);

		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;
}

6286 6287 6288 6289 6290 6291 6292 6293 6294
/**
 * lpfc_unblock_fabric_iocbs: Unblock issuing fabric iocb command.
 * @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.
 **/
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void
lpfc_unblock_fabric_iocbs(struct lpfc_hba *phba)
{
	clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags);

	lpfc_resume_fabric_iocbs(phba);
	return;
}

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/**
 * lpfc_block_fabric_iocbs: Block issuing fabric iocb command.
 * @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.
 **/
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static void
lpfc_block_fabric_iocbs(struct lpfc_hba *phba)
{
	int blocked;

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

	return;
}

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/**
 * lpfc_cmpl_fabric_iocb: Completion callback function for fabric iocb.
 * @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.
 **/
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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);
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			}
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			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)) {
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		/* Post any pending iocbs to HBA */
		lpfc_resume_fabric_iocbs(phba);
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	}
}

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/**
 * lpfc_issue_fabric_iocb: Issue a fabric iocb command.
 * @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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static int
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lpfc_issue_fabric_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *iocb)
{
	unsigned long iflags;
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
	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);

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	if (ready)
		/* Increment fabric iocb count to hold the position */
		atomic_inc(&phba->fabric_iocb_count);
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	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;

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		lpfc_debugfs_disc_trc(iocb->vport, LPFC_DISC_TRC_ELS_CMD,
			"Fabric sched2:   ste:x%x",
			iocb->vport->port_state, 0, 0);

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		ret = lpfc_sli_issue_iocb(phba, pring, iocb, 0);

		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;
}

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/**
 * lpfc_fabric_abort_vport: Abort a vport's iocbs from driver fabric iocb list.
 * @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.
 **/
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static void lpfc_fabric_abort_vport(struct lpfc_vport *vport)
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{
	LIST_HEAD(completions);
	struct lpfc_hba  *phba = vport->phba;
	struct lpfc_iocbq *tmp_iocb, *piocb;
	IOCB_t *cmd;

	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);

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

		cmd = &piocb->iocb;
		cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
		cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
		(piocb->iocb_cmpl) (phba, piocb, piocb);
	}
}

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/**
 * lpfc_fabric_abort_nport: Abort a ndlp's iocbs from driver fabric iocb list.
 * @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.
 **/
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void lpfc_fabric_abort_nport(struct lpfc_nodelist *ndlp)
{
	LIST_HEAD(completions);
	struct lpfc_hba  *phba = ndlp->vport->phba;
	struct lpfc_iocbq *tmp_iocb, *piocb;
	struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
	IOCB_t *cmd;

	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);
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		}
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	}
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	spin_unlock_irq(&phba->hbalock);

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

		cmd = &piocb->iocb;
		cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
		cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
		(piocb->iocb_cmpl) (phba, piocb, piocb);
	}
}

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/**
 * lpfc_fabric_abort_hba: Abort all iocbs on driver fabric iocb list.
 * @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.
 **/
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void lpfc_fabric_abort_hba(struct lpfc_hba *phba)
{
	LIST_HEAD(completions);
	struct lpfc_iocbq *piocb;
	IOCB_t *cmd;

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

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

		cmd = &piocb->iocb;
		cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
		cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
		(piocb->iocb_cmpl) (phba, piocb, piocb);
	}
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}