[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_vport.c

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2004-2006 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.com                                                  *
 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * 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.                                     *
 *******************************************************************/

#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/pci.h>
#include <linux/spinlock.h>

#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_version.h"
#include "lpfc_vport.h"

inline void lpfc_vport_set_state(struct lpfc_vport *vport,
				 enum fc_vport_state new_state)
{
	struct fc_vport *fc_vport = vport->fc_vport;

	if (fc_vport) {
		/*
		 * When the transport defines fc_vport_set state we will replace
		 * this code with the following line
		 */
		/* fc_vport_set_state(fc_vport, new_state); */
		if (new_state != FC_VPORT_INITIALIZING)
			fc_vport->vport_last_state = fc_vport->vport_state;
		fc_vport->vport_state = new_state;
	}

	/* for all the error states we will set the invternal state to FAILED */
	switch (new_state) {
	case FC_VPORT_NO_FABRIC_SUPP:
	case FC_VPORT_NO_FABRIC_RSCS:
	case FC_VPORT_FABRIC_LOGOUT:
	case FC_VPORT_FABRIC_REJ_WWN:
	case FC_VPORT_FAILED:
		vport->port_state = LPFC_VPORT_FAILED;
		break;
	case FC_VPORT_LINKDOWN:
		vport->port_state = LPFC_VPORT_UNKNOWN;
		break;
	default:
		/* do nothing */
		break;
	}
}

static int
lpfc_alloc_vpi(struct lpfc_hba *phba)
{
	int  vpi;

	spin_lock_irq(&phba->hbalock);
	/* Start at bit 1 because vpi zero is reserved for the physical port */
	vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1);
	if (vpi > phba->max_vpi)
		vpi = 0;
	else
		set_bit(vpi, phba->vpi_bmask);
	spin_unlock_irq(&phba->hbalock);
	return vpi;
}

static void
lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
{
	spin_lock_irq(&phba->hbalock);
	clear_bit(vpi, phba->vpi_bmask);
	spin_unlock_irq(&phba->hbalock);
}

static int
lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
{
	LPFC_MBOXQ_t *pmb;
	MAILBOX_t *mb;
	struct lpfc_dmabuf *mp;
	int  rc;

	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmb) {
		return -ENOMEM;
	}
	mb = &pmb->mb;

	lpfc_read_sparam(phba, pmb, vport->vpi);
	/*
	 * Grab buffer pointer and clear context1 so we can use
	 * lpfc_sli_issue_box_wait
	 */
	mp = (struct lpfc_dmabuf *) pmb->context1;
	pmb->context1 = NULL;

	pmb->vport = vport;
	rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
	if (rc != MBX_SUCCESS) {
		if (signal_pending(current)) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
					 "1830 Signal aborted mbxCmd x%x\n",
					 mb->mbxCommand);
			lpfc_mbuf_free(phba, mp->virt, mp->phys);
			kfree(mp);
			if (rc != MBX_TIMEOUT)
				mempool_free(pmb, phba->mbox_mem_pool);
			return -EINTR;
		} else {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
					 "1818 VPort failed init, mbxCmd x%x "
					 "READ_SPARM mbxStatus x%x, rc = x%x\n",
					 mb->mbxCommand, mb->mbxStatus, rc);
			lpfc_mbuf_free(phba, mp->virt, mp->phys);
			kfree(mp);
			if (rc != MBX_TIMEOUT)
				mempool_free(pmb, phba->mbox_mem_pool);
			return -EIO;
		}
	}

	memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
	memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
	       sizeof (struct lpfc_name));
	memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
	       sizeof (struct lpfc_name));

	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	kfree(mp);
	mempool_free(pmb, phba->mbox_mem_pool);

	return 0;
}

static int
lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
		      const char *name_type)
{
				/* ensure that IEEE format 1 addresses
				 * contain zeros in bits 59-48
				 */
	if (!((wwn->u.wwn[0] >> 4) == 1 &&
	      ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
		return 1;

	lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
			"1822 Invalid %s: %02x:%02x:%02x:%02x:"
			"%02x:%02x:%02x:%02x\n",
			name_type,
			wwn->u.wwn[0], wwn->u.wwn[1],
			wwn->u.wwn[2], wwn->u.wwn[3],
			wwn->u.wwn[4], wwn->u.wwn[5],
			wwn->u.wwn[6], wwn->u.wwn[7]);
	return 0;
}

static int
lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
{
	struct lpfc_vport *vport;
	unsigned long flags;

	spin_lock_irqsave(&phba->hbalock, flags);
	list_for_each_entry(vport, &phba->port_list, listentry) {
		if (vport == new_vport)
			continue;
		/* If they match, return not unique */
		if (memcmp(&vport->fc_sparam.portName,
			   &new_vport->fc_sparam.portName,
			   sizeof(struct lpfc_name)) == 0) {
			spin_unlock_irqrestore(&phba->hbalock, flags);
			return 0;
		}
	}
	spin_unlock_irqrestore(&phba->hbalock, flags);
	return 1;
}

int
lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
{
	struct lpfc_nodelist *ndlp;
	struct Scsi_Host *shost = fc_vport->shost;
	struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = pport->phba;
	struct lpfc_vport *vport = NULL;
	int instance;
	int vpi;
	int rc = VPORT_ERROR;
	int status;

	if ((phba->sli_rev < 3) ||
		!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
		lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
				"1808 Create VPORT failed: "
				"NPIV is not enabled: SLImode:%d\n",
				phba->sli_rev);
		rc = VPORT_INVAL;
		goto error_out;
	}

	vpi = lpfc_alloc_vpi(phba);
	if (vpi == 0) {
		lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
				"1809 Create VPORT failed: "
				"Max VPORTs (%d) exceeded\n",
				phba->max_vpi);
		rc = VPORT_NORESOURCES;
		goto error_out;
	}


	/* Assign an unused board number */
	if ((instance = lpfc_get_instance()) < 0) {
		lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
				"1810 Create VPORT failed: Cannot get "
				"instance number\n");
		lpfc_free_vpi(phba, vpi);
		rc = VPORT_NORESOURCES;
		goto error_out;
	}

	vport = lpfc_create_port(phba, instance, &fc_vport->dev);
	if (!vport) {
		lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
				"1811 Create VPORT failed: vpi x%x\n", vpi);
		lpfc_free_vpi(phba, vpi);
		rc = VPORT_NORESOURCES;
		goto error_out;
	}

	vport->vpi = vpi;
	lpfc_debugfs_initialize(vport);

	if ((status = lpfc_vport_sparm(phba, vport))) {
		if (status == -EINTR) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
					 "1831 Create VPORT Interrupted.\n");
			rc = VPORT_ERROR;
		} else {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
					 "1813 Create VPORT failed. "
					 "Cannot get sparam\n");
			rc = VPORT_NORESOURCES;
		}
		lpfc_free_vpi(phba, vpi);
		destroy_port(vport);
		goto error_out;
	}

	memcpy(vport->fc_portname.u.wwn, vport->fc_sparam.portName.u.wwn, 8);
	memcpy(vport->fc_nodename.u.wwn, vport->fc_sparam.nodeName.u.wwn, 8);

	if (fc_vport->node_name != 0)
		u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
	if (fc_vport->port_name != 0)
		u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);

	memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
	memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);

	if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
	    !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
		lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
				 "1821 Create VPORT failed. "
				 "Invalid WWN format\n");
		lpfc_free_vpi(phba, vpi);
		destroy_port(vport);
		rc = VPORT_INVAL;
		goto error_out;
	}

	if (!lpfc_unique_wwpn(phba, vport)) {
		lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
				 "1823 Create VPORT failed. "
				 "Duplicate WWN on HBA\n");
		lpfc_free_vpi(phba, vpi);
		destroy_port(vport);
		rc = VPORT_INVAL;
		goto error_out;
	}

	*(struct lpfc_vport **)fc_vport->dd_data = vport;
	vport->fc_vport = fc_vport;

	if ((phba->link_state < LPFC_LINK_UP) ||
	    (phba->fc_topology == TOPOLOGY_LOOP)) {
		lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
		rc = VPORT_OK;
		goto out;
	}

	if (disable) {
		rc = VPORT_OK;
		goto out;
	}

	/* Use the Physical nodes Fabric NDLP to determine if the link is
	 * up and ready to FDISC.
	 */
	ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
	if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
		if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
			lpfc_set_disctmo(vport);
			lpfc_initial_fdisc(vport);
		} else {
			lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					 "0262 No NPIV Fabric support\n");
		}
	} else {
		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
	}
	rc = VPORT_OK;

out:
	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
			"1825 Vport Created.\n");
	lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
error_out:
	return rc;
}

static int
disable_vport(struct fc_vport *fc_vport)
{
	struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
	long timeout;

	ndlp = lpfc_findnode_did(vport, Fabric_DID);
	if (ndlp && phba->link_state >= LPFC_LINK_UP) {
		vport->unreg_vpi_cmpl = VPORT_INVAL;
		timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
		if (!lpfc_issue_els_npiv_logo(vport, ndlp))
			while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
				timeout = schedule_timeout(timeout);
	}

	lpfc_sli_host_down(vport);

	/* Mark all nodes for discovery so we can remove them by
	 * calling lpfc_cleanup_rpis(vport, 1)
	 */
	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
			continue;
		lpfc_disc_state_machine(vport, ndlp, NULL,
					NLP_EVT_DEVICE_RECOVERY);
	}
	lpfc_cleanup_rpis(vport, 1);

	lpfc_stop_vport_timers(vport);
	lpfc_unreg_all_rpis(vport);
	lpfc_unreg_default_rpis(vport);
	/*
	 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
	 * scsi_host_put() to release the vport.
	 */
	lpfc_mbx_unreg_vpi(vport);

	lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
			 "1826 Vport Disabled.\n");
	return VPORT_OK;
}

static int
enable_vport(struct fc_vport *fc_vport)
{
	struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_nodelist *ndlp = NULL;

	if ((phba->link_state < LPFC_LINK_UP) ||
	    (phba->fc_topology == TOPOLOGY_LOOP)) {
		lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
		return VPORT_OK;
	}

	vport->load_flag |= FC_LOADING;
	vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;

	/* Use the Physical nodes Fabric NDLP to determine if the link is
	 * up and ready to FDISC.
	 */
	ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
	if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
		if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
			lpfc_set_disctmo(vport);
			lpfc_initial_fdisc(vport);
		} else {
			lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
			lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
					 "0264 No NPIV Fabric support\n");
		}
	} else {
		lpfc_vport_set_state(vport, FC_VPORT_FAILED);
	}
	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
			 "1827 Vport Enabled.\n");
	return VPORT_OK;
}

int
lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
{
	if (disable)
		return disable_vport(fc_vport);
	else
		return enable_vport(fc_vport);
}


int
lpfc_vport_delete(struct fc_vport *fc_vport)
{
	struct lpfc_nodelist *ndlp = NULL;
	struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost;
	struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
	struct lpfc_hba   *phba = vport->phba;
	long timeout;

	if (vport->port_type == LPFC_PHYSICAL_PORT) {
		lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
				 "1812 vport_delete failed: Cannot delete "
				 "physical host\n");
		return VPORT_ERROR;
	}
	/*
	 * If we are not unloading the driver then prevent the vport_delete
	 * from happening until after this vport's discovery is finished.
	 */
	if (!(phba->pport->load_flag & FC_UNLOADING)) {
		int check_count = 0;
		while (check_count < ((phba->fc_ratov * 3) + 3) &&
		       vport->port_state > LPFC_VPORT_FAILED &&
		       vport->port_state < LPFC_VPORT_READY) {
			check_count++;
			msleep(1000);
		}
		if (vport->port_state > LPFC_VPORT_FAILED &&
		    vport->port_state < LPFC_VPORT_READY)
			return -EAGAIN;
	}
	/*
	 * This is a bit of a mess.  We want to ensure the shost doesn't get
	 * torn down until we're done with the embedded lpfc_vport structure.
	 *
	 * Beyond holding a reference for this function, we also need a
	 * reference for outstanding I/O requests we schedule during delete
	 * processing.  But once we scsi_remove_host() we can no longer obtain
	 * a reference through scsi_host_get().
	 *
	 * So we take two references here.  We release one reference at the
	 * bottom of the function -- after delinking the vport.  And we
	 * release the other at the completion of the unreg_vpi that get's
	 * initiated after we've disposed of all other resources associated
	 * with the port.
	 */
	if (!scsi_host_get(shost) || !scsi_host_get(shost))
		return VPORT_INVAL;
	spin_lock_irq(&phba->hbalock);
	vport->load_flag |= FC_UNLOADING;
	spin_unlock_irq(&phba->hbalock);
	kfree(vport->vname);
	lpfc_debugfs_terminate(vport);
	fc_remove_host(lpfc_shost_from_vport(vport));
	scsi_remove_host(lpfc_shost_from_vport(vport));

	ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
	if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
	    phba->link_state >= LPFC_LINK_UP) {
		if (vport->cfg_enable_da_id) {
			timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
			if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
				while (vport->ct_flags && timeout)
					timeout = schedule_timeout(timeout);
			else
				lpfc_printf_log(vport->phba, KERN_WARNING,
						LOG_VPORT,
						"1829 CT command failed to "
						"delete objects on fabric. \n");
		}
		/* First look for the Fabric ndlp */
		ndlp = lpfc_findnode_did(vport, Fabric_DID);
		if (!ndlp) {
			/* Cannot find existing Fabric ndlp, allocate one */
			ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
			if (!ndlp)
				goto skip_logo;
			lpfc_nlp_init(vport, ndlp, Fabric_DID);
		} else {
			lpfc_dequeue_node(vport, ndlp);
		}
		vport->unreg_vpi_cmpl = VPORT_INVAL;
		timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
		if (!lpfc_issue_els_npiv_logo(vport, ndlp))
			while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
				timeout = schedule_timeout(timeout);
	}

skip_logo:
	lpfc_cleanup(vport);
	lpfc_sli_host_down(vport);

	lpfc_stop_vport_timers(vport);
	lpfc_unreg_all_rpis(vport);

	if (!(phba->pport->load_flag & FC_UNLOADING)) {
		lpfc_unreg_default_rpis(vport);
		/*
		 * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
		 * does the scsi_host_put() to release the vport.
		 */
		lpfc_mbx_unreg_vpi(vport);
	}

	lpfc_free_vpi(phba, vport->vpi);
	vport->work_port_events = 0;
	spin_lock_irq(&phba->hbalock);
	list_del_init(&vport->listentry);
	spin_unlock_irq(&phba->hbalock);
	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
			 "1828 Vport Deleted.\n");
	scsi_host_put(shost);
	return VPORT_OK;
}

struct lpfc_vport **
lpfc_create_vport_work_array(struct lpfc_hba *phba)
{
	struct lpfc_vport *port_iterator;
	struct lpfc_vport **vports;
	int index = 0;
	vports = kzalloc((phba->max_vpi + 1) * sizeof(struct lpfc_vport *),
			 GFP_KERNEL);
	if (vports == NULL)
		return NULL;
	spin_lock_irq(&phba->hbalock);
	list_for_each_entry(port_iterator, &phba->port_list, listentry) {
		if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
			lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT,
					 "1801 Create vport work array FAILED: "
					 "cannot do scsi_host_get\n");
			continue;
		}
		vports[index++] = port_iterator;
	}
	spin_unlock_irq(&phba->hbalock);
	return vports;
}

void
lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
{
	int i;
	if (vports == NULL)
		return;
	for (i=0; vports[i] != NULL && i <= phba->max_vpi; i++)
		scsi_host_put(lpfc_shost_from_vport(vports[i]));
	kfree(vports);
}
Commit	Line	Data
92d7f7b0 JS	1	/*******************************************************************
	2	* This file is part of the Emulex Linux Device Driver for *
	3	* Fibre Channel Host Bus Adapters. *
	4	* Copyright (C) 2004-2006 Emulex. All rights reserved. *
	5	* EMULEX and SLI are trademarks of Emulex. *
	6	* www.emulex.com *
	7	* Portions Copyright (C) 2004-2005 Christoph Hellwig *
	8	* *
	9	* This program is free software; you can redistribute it and/or *
	10	* modify it under the terms of version 2 of the GNU General *
	11	* Public License as published by the Free Software Foundation. *
	12	* This program is distributed in the hope that it will be useful. *
	13	* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
	14	* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
	15	* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
	16	* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
	17	* TO BE LEGALLY INVALID. See the GNU General Public License for *
	18	* more details, a copy of which can be found in the file COPYING *
	19	* included with this package. *
	20	*******************************************************************/
	21
	22	#include <linux/blkdev.h>
	23	#include <linux/delay.h>
	24	#include <linux/dma-mapping.h>
	25	#include <linux/idr.h>
	26	#include <linux/interrupt.h>
	27	#include <linux/kthread.h>
	28	#include <linux/pci.h>
	29	#include <linux/spinlock.h>
	30
	31	#include <scsi/scsi.h>
	32	#include <scsi/scsi_device.h>
	33	#include <scsi/scsi_host.h>
	34	#include <scsi/scsi_transport_fc.h>
	35	#include "lpfc_hw.h"
	36	#include "lpfc_sli.h"
	37	#include "lpfc_disc.h"
	38	#include "lpfc_scsi.h"
	39	#include "lpfc.h"
	40	#include "lpfc_logmsg.h"
	41	#include "lpfc_crtn.h"
	42	#include "lpfc_version.h"
	43	#include "lpfc_vport.h"
	44
	45	inline void lpfc_vport_set_state(struct lpfc_vport *vport,
	46	enum fc_vport_state new_state)
	47	{
	48	struct fc_vport *fc_vport = vport->fc_vport;
	49
	50	if (fc_vport) {
	51	/*
	52	* When the transport defines fc_vport_set state we will replace
	53	* this code with the following line
	54	*/
	55	/* fc_vport_set_state(fc_vport, new_state); */
	56	if (new_state != FC_VPORT_INITIALIZING)
	57	fc_vport->vport_last_state = fc_vport->vport_state;
	58	fc_vport->vport_state = new_state;
	59	}
	60
	61	/* for all the error states we will set the invternal state to FAILED */
	62	switch (new_state) {
	63	case FC_VPORT_NO_FABRIC_SUPP:
	64	case FC_VPORT_NO_FABRIC_RSCS:
65	case FC_VPORT_FABRIC_LOGOUT:
66	case FC_VPORT_FABRIC_REJ_WWN:
67	case FC_VPORT_FAILED:
68	vport->port_state = LPFC_VPORT_FAILED;
69	break;
70	case FC_VPORT_LINKDOWN:
71	vport->port_state = LPFC_VPORT_UNKNOWN;
72	break;
73	default:
74	/* do nothing */
75	break;
76	}
77	}
78
79	static int
80	lpfc_alloc_vpi(struct lpfc_hba *phba)
81	{
82	int vpi;
83
84	spin_lock_irq(&phba->hbalock);
858c9f6c JS	85	/* Start at bit 1 because vpi zero is reserved for the physical port */
858c9f6c JS	86	vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1);
92d7f7b0 JS	87	if (vpi > phba->max_vpi)
	88	vpi = 0;
	89	else
	90	set_bit(vpi, phba->vpi_bmask);
	91	spin_unlock_irq(&phba->hbalock);
	92	return vpi;
	93	}
	94
	95	static void
	96	lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
	97	{
	98	spin_lock_irq(&phba->hbalock);
	99	clear_bit(vpi, phba->vpi_bmask);
	100	spin_unlock_irq(&phba->hbalock);
	101	}
	102
	103	static int
	104	lpfc_vport_sparm(struct lpfc_hba phba, struct lpfc_vport vport)
	105	{
	106	LPFC_MBOXQ_t *pmb;
	107	MAILBOX_t *mb;
	108	struct lpfc_dmabuf *mp;
	109	int rc;
	110
	111	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	112	if (!pmb) {
	113	return -ENOMEM;
	114	}
	115	mb = &pmb->mb;
	116
	117	lpfc_read_sparam(phba, pmb, vport->vpi);
	118	/*
	119	* Grab buffer pointer and clear context1 so we can use
	120	* lpfc_sli_issue_box_wait
	121	*/
	122	mp = (struct lpfc_dmabuf *) pmb->context1;
	123	pmb->context1 = NULL;
	124
	125	pmb->vport = vport;
	126	rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
	127	if (rc != MBX_SUCCESS) {
98c9ea5c JS	128	if (signal_pending(current)) {
	129	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT \| LOG_VPORT,
	130	"1830 Signal aborted mbxCmd x%x\n",
	131	mb->mbxCommand);
	132	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	133	kfree(mp);
	134	if (rc != MBX_TIMEOUT)
	135	mempool_free(pmb, phba->mbox_mem_pool);
	136	return -EINTR;
	137	} else {
	138	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT \| LOG_VPORT,
	139	"1818 VPort failed init, mbxCmd x%x "
	140	"READ_SPARM mbxStatus x%x, rc = x%x\n",
	141	mb->mbxCommand, mb->mbxStatus, rc);
	142	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	143	kfree(mp);
	144	if (rc != MBX_TIMEOUT)
	145	mempool_free(pmb, phba->mbox_mem_pool);
	146	return -EIO;
	147	}
92d7f7b0 JS	148	}
	149
	150	memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
	151	memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
	152	sizeof (struct lpfc_name));
	153	memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
	154	sizeof (struct lpfc_name));
	155
	156	lpfc_mbuf_free(phba, mp->virt, mp->phys);
	157	kfree(mp);
	158	mempool_free(pmb, phba->mbox_mem_pool);
	159
	160	return 0;
	161	}
	162
	163	static int
	164	lpfc_valid_wwn_format(struct lpfc_hba phba, struct lpfc_name wwn,
	165	const char *name_type)
	166	{
	167	/* ensure that IEEE format 1 addresses
	168	* contain zeros in bits 59-48
	169	*/
	170	if (!((wwn->u.wwn[0] >> 4) == 1 &&
	171	((wwn->u.wwn[0] & 0xf) != 0 \|\| (wwn->u.wwn[1] & 0xf) != 0)))
	172	return 1;
	173
	174	lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011	175	"1822 Invalid %s: %02x:%02x:%02x:%02x:"
92d7f7b0	176	"%02x:%02x:%02x:%02x\n",
e8b62011	177	name_type,
92d7f7b0 JS	178	wwn->u.wwn[0], wwn->u.wwn[1],
	179	wwn->u.wwn[2], wwn->u.wwn[3],
	180	wwn->u.wwn[4], wwn->u.wwn[5],
	181	wwn->u.wwn[6], wwn->u.wwn[7]);
	182	return 0;
	183	}
	184
	185	static int
	186	lpfc_unique_wwpn(struct lpfc_hba phba, struct lpfc_vport new_vport)
	187	{
	188	struct lpfc_vport *vport;
549e55cd	189	unsigned long flags;
92d7f7b0	190
549e55cd	191	spin_lock_irqsave(&phba->hbalock, flags);
92d7f7b0 JS	192	list_for_each_entry(vport, &phba->port_list, listentry) {
	193	if (vport == new_vport)
	194	continue;
	195	/* If they match, return not unique */
	196	if (memcmp(&vport->fc_sparam.portName,
549e55cd JS	197	&new_vport->fc_sparam.portName,
	198	sizeof(struct lpfc_name)) == 0) {
	199	spin_unlock_irqrestore(&phba->hbalock, flags);
92d7f7b0	200	return 0;
549e55cd	201	}
92d7f7b0	202	}
549e55cd	203	spin_unlock_irqrestore(&phba->hbalock, flags);
92d7f7b0 JS	204	return 1;
	205	}
	206
	207	int
	208	lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
	209	{
	210	struct lpfc_nodelist *ndlp;
3de2a653 JS	211	struct Scsi_Host *shost = fc_vport->shost;
3de2a653 JS	212	struct lpfc_vport pport = (struct lpfc_vport ) shost->hostdata;
92d7f7b0 JS	213	struct lpfc_hba *phba = pport->phba;
	214	struct lpfc_vport *vport = NULL;
	215	int instance;
	216	int vpi;
	217	int rc = VPORT_ERROR;
98c9ea5c	218	int status;
92d7f7b0 JS	219
	220	if ((phba->sli_rev < 3) \|\|
	221	!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
	222	lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011	223	"1808 Create VPORT failed: "
92d7f7b0	224	"NPIV is not enabled: SLImode:%d\n",
e8b62011	225	phba->sli_rev);
92d7f7b0 JS	226	rc = VPORT_INVAL;
	227	goto error_out;
	228	}
	229
	230	vpi = lpfc_alloc_vpi(phba);
	231	if (vpi == 0) {
	232	lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011	233	"1809 Create VPORT failed: "
92d7f7b0	234	"Max VPORTs (%d) exceeded\n",
e8b62011	235	phba->max_vpi);
92d7f7b0 JS	236	rc = VPORT_NORESOURCES;
	237	goto error_out;
	238	}
	239
	240
	241	/* Assign an unused board number */
	242	if ((instance = lpfc_get_instance()) < 0) {
	243	lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011 JS	244	"1810 Create VPORT failed: Cannot get "
e8b62011 JS	245	"instance number\n");
92d7f7b0 JS	246	lpfc_free_vpi(phba, vpi);
	247	rc = VPORT_NORESOURCES;
	248	goto error_out;
	249	}
	250
3de2a653	251	vport = lpfc_create_port(phba, instance, &fc_vport->dev);
92d7f7b0 JS	252	if (!vport) {
92d7f7b0 JS	253	lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
e8b62011	254	"1811 Create VPORT failed: vpi x%x\n", vpi);
92d7f7b0 JS	255	lpfc_free_vpi(phba, vpi);
	256	rc = VPORT_NORESOURCES;
	257	goto error_out;
	258	}
	259
	260	vport->vpi = vpi;
858c9f6c JS	261	lpfc_debugfs_initialize(vport);
858c9f6c JS	262
98c9ea5c JS	263	if ((status = lpfc_vport_sparm(phba, vport))) {
	264	if (status == -EINTR) {
	265	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
	266	"1831 Create VPORT Interrupted.\n");
	267	rc = VPORT_ERROR;
	268	} else {
	269	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
	270	"1813 Create VPORT failed. "
	271	"Cannot get sparam\n");
	272	rc = VPORT_NORESOURCES;
	273	}
92d7f7b0 JS	274	lpfc_free_vpi(phba, vpi);
92d7f7b0 JS	275	destroy_port(vport);
92d7f7b0 JS	276	goto error_out;
	277	}
	278
	279	memcpy(vport->fc_portname.u.wwn, vport->fc_sparam.portName.u.wwn, 8);
	280	memcpy(vport->fc_nodename.u.wwn, vport->fc_sparam.nodeName.u.wwn, 8);
	281
	282	if (fc_vport->node_name != 0)
	283	u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
	284	if (fc_vport->port_name != 0)
	285	u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
	286
	287	memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
	288	memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
	289
	290	if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") \|\|
	291	!lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
e8b62011 JS	292	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
	293	"1821 Create VPORT failed. "
	294	"Invalid WWN format\n");
92d7f7b0 JS	295	lpfc_free_vpi(phba, vpi);
	296	destroy_port(vport);
	297	rc = VPORT_INVAL;
	298	goto error_out;
	299	}
	300
	301	if (!lpfc_unique_wwpn(phba, vport)) {
e8b62011 JS	302	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
	303	"1823 Create VPORT failed. "
	304	"Duplicate WWN on HBA\n");
92d7f7b0 JS	305	lpfc_free_vpi(phba, vpi);
	306	destroy_port(vport);
	307	rc = VPORT_INVAL;
	308	goto error_out;
	309	}
	310
	311	(struct lpfc_vport *)fc_vport->dd_data = vport;
	312	vport->fc_vport = fc_vport;
	313
	314	if ((phba->link_state < LPFC_LINK_UP) \|\|
	315	(phba->fc_topology == TOPOLOGY_LOOP)) {
	316	lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
	317	rc = VPORT_OK;
	318	goto out;
	319	}
	320
	321	if (disable) {
	322	rc = VPORT_OK;
	323	goto out;
	324	}
	325
	326	/* Use the Physical nodes Fabric NDLP to determine if the link is
	327	* up and ready to FDISC.
	328	*/
	329	ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
	330	if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
858c9f6c JS	331	if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
	332	lpfc_set_disctmo(vport);
	333	lpfc_initial_fdisc(vport);
	334	} else {
	335	lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
e8b62011 JS	336	lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
e8b62011 JS	337	"0262 No NPIV Fabric support\n");
858c9f6c	338	}
92d7f7b0 JS	339	} else {
	340	lpfc_vport_set_state(vport, FC_VPORT_FAILED);
	341	}
	342	rc = VPORT_OK;
	343
	344	out:
a58cbd52 JS	345	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
a58cbd52 JS	346	"1825 Vport Created.\n");
92d7f7b0 JS	347	lpfc_host_attrib_init(lpfc_shost_from_vport(vport));
	348	error_out:
	349	return rc;
	350	}
	351
311464ec	352	static int
92d7f7b0 JS	353	disable_vport(struct fc_vport *fc_vport)
	354	{
	355	struct lpfc_vport vport = (struct lpfc_vport **)fc_vport->dd_data;
	356	struct lpfc_hba *phba = vport->phba;
	357	struct lpfc_nodelist ndlp = NULL, next_ndlp = NULL;
	358	long timeout;
	359
	360	ndlp = lpfc_findnode_did(vport, Fabric_DID);
	361	if (ndlp && phba->link_state >= LPFC_LINK_UP) {
	362	vport->unreg_vpi_cmpl = VPORT_INVAL;
	363	timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
	364	if (!lpfc_issue_els_npiv_logo(vport, ndlp))
	365	while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
	366	timeout = schedule_timeout(timeout);
	367	}
	368
	369	lpfc_sli_host_down(vport);
	370
	371	/* Mark all nodes for discovery so we can remove them by
	372	* calling lpfc_cleanup_rpis(vport, 1)
	373	*/
	374	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
	375	if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
	376	continue;
	377	lpfc_disc_state_machine(vport, ndlp, NULL,
	378	NLP_EVT_DEVICE_RECOVERY);
	379	}
	380	lpfc_cleanup_rpis(vport, 1);
	381
	382	lpfc_stop_vport_timers(vport);
	383	lpfc_unreg_all_rpis(vport);
	384	lpfc_unreg_default_rpis(vport);
	385	/*
	386	* Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the
	387	* scsi_host_put() to release the vport.
	388	*/
	389	lpfc_mbx_unreg_vpi(vport);
	390
	391	lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
a58cbd52 JS	392	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
a58cbd52 JS	393	"1826 Vport Disabled.\n");
92d7f7b0 JS	394	return VPORT_OK;
	395	}
	396
311464ec	397	static int
92d7f7b0 JS	398	enable_vport(struct fc_vport *fc_vport)
	399	{
	400	struct lpfc_vport vport = (struct lpfc_vport **)fc_vport->dd_data;
	401	struct lpfc_hba *phba = vport->phba;
	402	struct lpfc_nodelist *ndlp = NULL;
	403
	404	if ((phba->link_state < LPFC_LINK_UP) \|\|
	405	(phba->fc_topology == TOPOLOGY_LOOP)) {
	406	lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
	407	return VPORT_OK;
	408	}
	409
	410	vport->load_flag \|= FC_LOADING;
	411	vport->fc_flag \|= FC_VPORT_NEEDS_REG_VPI;
	412
	413	/* Use the Physical nodes Fabric NDLP to determine if the link is
	414	* up and ready to FDISC.
	415	*/
	416	ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
	417	if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) {
858c9f6c JS	418	if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) {
	419	lpfc_set_disctmo(vport);
	420	lpfc_initial_fdisc(vport);
	421	} else {
	422	lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP);
e8b62011 JS	423	lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
e8b62011 JS	424	"0264 No NPIV Fabric support\n");
858c9f6c	425	}
92d7f7b0 JS	426	} else {
	427	lpfc_vport_set_state(vport, FC_VPORT_FAILED);
	428	}
a58cbd52 JS	429	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
a58cbd52 JS	430	"1827 Vport Enabled.\n");
92d7f7b0 JS	431	return VPORT_OK;
	432	}
	433
	434	int
	435	lpfc_vport_disable(struct fc_vport *fc_vport, bool disable)
	436	{
	437	if (disable)
	438	return disable_vport(fc_vport);
	439	else
	440	return enable_vport(fc_vport);
	441	}
	442
	443
	444	int
	445	lpfc_vport_delete(struct fc_vport *fc_vport)
	446	{
	447	struct lpfc_nodelist *ndlp = NULL;
92d7f7b0 JS	448	struct Scsi_Host shost = (struct Scsi_Host ) fc_vport->shost;
	449	struct lpfc_vport vport = (struct lpfc_vport **)fc_vport->dd_data;
	450	struct lpfc_hba *phba = vport->phba;
	451	long timeout;
92d7f7b0	452
51ef4c26 JS	453	if (vport->port_type == LPFC_PHYSICAL_PORT) {
	454	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
	455	"1812 vport_delete failed: Cannot delete "
	456	"physical host\n");
	457	return VPORT_ERROR;
	458	}
	459	/*
	460	* If we are not unloading the driver then prevent the vport_delete
	461	* from happening until after this vport's discovery is finished.
	462	*/
	463	if (!(phba->pport->load_flag & FC_UNLOADING)) {
	464	int check_count = 0;
	465	while (check_count < ((phba->fc_ratov * 3) + 3) &&
	466	vport->port_state > LPFC_VPORT_FAILED &&
	467	vport->port_state < LPFC_VPORT_READY) {
	468	check_count++;
	469	msleep(1000);
	470	}
	471	if (vport->port_state > LPFC_VPORT_FAILED &&
	472	vport->port_state < LPFC_VPORT_READY)
	473	return -EAGAIN;
	474	}
92d7f7b0 JS	475	/*
	476	* This is a bit of a mess. We want to ensure the shost doesn't get
	477	* torn down until we're done with the embedded lpfc_vport structure.
	478	*
	479	* Beyond holding a reference for this function, we also need a
	480	* reference for outstanding I/O requests we schedule during delete
	481	* processing. But once we scsi_remove_host() we can no longer obtain
	482	* a reference through scsi_host_get().
	483	*
	484	* So we take two references here. We release one reference at the
	485	* bottom of the function -- after delinking the vport. And we
	486	* release the other at the completion of the unreg_vpi that get's
	487	* initiated after we've disposed of all other resources associated
	488	* with the port.
	489	*/
	490	if (!scsi_host_get(shost) \|\| !scsi_host_get(shost))
	491	return VPORT_INVAL;
51ef4c26	492	spin_lock_irq(&phba->hbalock);
92d7f7b0	493	vport->load_flag \|= FC_UNLOADING;
51ef4c26	494	spin_unlock_irq(&phba->hbalock);
92d7f7b0	495	kfree(vport->vname);
858c9f6c	496	lpfc_debugfs_terminate(vport);
92d7f7b0 JS	497	fc_remove_host(lpfc_shost_from_vport(vport));
	498	scsi_remove_host(lpfc_shost_from_vport(vport));
	499
	500	ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
	501	if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
7ee5d43e JS	502	phba->link_state >= LPFC_LINK_UP) {
	503	if (vport->cfg_enable_da_id) {
	504	timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
	505	if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
	506	while (vport->ct_flags && timeout)
	507	timeout = schedule_timeout(timeout);
	508	else
	509	lpfc_printf_log(vport->phba, KERN_WARNING,
	510	LOG_VPORT,
	511	"1829 CT command failed to "
	512	"delete objects on fabric. \n");
	513	}
92d7f7b0 JS	514	/* First look for the Fabric ndlp */
	515	ndlp = lpfc_findnode_did(vport, Fabric_DID);
	516	if (!ndlp) {
	517	/* Cannot find existing Fabric ndlp, allocate one */
	518	ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
	519	if (!ndlp)
	520	goto skip_logo;
	521	lpfc_nlp_init(vport, ndlp, Fabric_DID);
	522	} else {
	523	lpfc_dequeue_node(vport, ndlp);
	524	}
	525	vport->unreg_vpi_cmpl = VPORT_INVAL;
	526	timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
	527	if (!lpfc_issue_els_npiv_logo(vport, ndlp))
	528	while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout)
	529	timeout = schedule_timeout(timeout);
	530	}
	531
	532	skip_logo:
87af33fe	533	lpfc_cleanup(vport);
92d7f7b0 JS	534	lpfc_sli_host_down(vport);
92d7f7b0 JS	535
92d7f7b0 JS	536	lpfc_stop_vport_timers(vport);
92d7f7b0 JS	537	lpfc_unreg_all_rpis(vport);
87af33fe JS	538
	539	if (!(phba->pport->load_flag & FC_UNLOADING)) {
	540	lpfc_unreg_default_rpis(vport);
	541	/*
	542	* Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
	543	* does the scsi_host_put() to release the vport.
	544	*/
	545	lpfc_mbx_unreg_vpi(vport);
	546	}
92d7f7b0 JS	547
	548	lpfc_free_vpi(phba, vport->vpi);
	549	vport->work_port_events = 0;
	550	spin_lock_irq(&phba->hbalock);
	551	list_del_init(&vport->listentry);
	552	spin_unlock_irq(&phba->hbalock);
a58cbd52 JS	553	lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
a58cbd52 JS	554	"1828 Vport Deleted.\n");
92d7f7b0	555	scsi_host_put(shost);
51ef4c26	556	return VPORT_OK;
92d7f7b0 JS	557	}
92d7f7b0 JS	558
549e55cd JS	559	struct lpfc_vport **
	560	lpfc_create_vport_work_array(struct lpfc_hba *phba)
	561	{
	562	struct lpfc_vport *port_iterator;
	563	struct lpfc_vport **vports;
	564	int index = 0;
09372820	565	vports = kzalloc((phba->max_vpi + 1) * sizeof(struct lpfc_vport *),
549e55cd JS	566	GFP_KERNEL);
	567	if (vports == NULL)
	568	return NULL;
	569	spin_lock_irq(&phba->hbalock);
	570	list_for_each_entry(port_iterator, &phba->port_list, listentry) {
e8b62011	571	if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
51ef4c26	572	lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT,
e8b62011 JS	573	"1801 Create vport work array FAILED: "
e8b62011 JS	574	"cannot do scsi_host_get\n");
549e55cd	575	continue;
e8b62011	576	}
549e55cd JS	577	vports[index++] = port_iterator;
	578	}
	579	spin_unlock_irq(&phba->hbalock);
	580	return vports;
	581	}
	582
	583	void
09372820	584	lpfc_destroy_vport_work_array(struct lpfc_hba phba, struct lpfc_vport *vports)
549e55cd JS	585	{
	586	int i;
	587	if (vports == NULL)
	588	return;
09372820	589	for (i=0; vports[i] != NULL && i <= phba->max_vpi; i++)
549e55cd JS	590	scsi_host_put(lpfc_shost_from_vport(vports[i]));
	591	kfree(vports);
	592	}