![James Smart](/assets/img/avatar_default.png)
FC and SCSI Discovery Fixes: - Clear the virtual fabrics bit (word 1 bit 30) when sending the FLOGI and FDISC. (CR 124339) - Return a MLQUEUE_DEVICE_BUSY if the driver detects that an I/O is being retried too quickly (CR 124668) - Remove NDLP reference put in lpfc_cmpl_els_logo_acc for all but fabric nodes (CR 123924) - Only retry FDISCs every second and stop retrying after devloss number of retries (CR 13939) - Check to see if vports are unloading before adding them to the vport work array. (CR 124996) - Fixed illegal state transition during driver unload (CR 124191) - Added missing protection on setting/clearing of vport->fc_flag bit (CR 126002) - Set NPIV flag in lpfc_mbx_process_link_up for all ports sli3 and above. (CR 126094) - Clear FCP command bytes that are not used. (CR 126209) Signed-off-by: Alex Iannicelli <alex.iannicelli@emulex.com> Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
878 lines
25 KiB
C
878 lines
25 KiB
C
/*******************************************************************
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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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* *
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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 *
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* Public License as published by the Free Software Foundation. *
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* This program is distributed in the hope that it will be useful. *
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* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
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* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
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* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
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* TO BE LEGALLY INVALID. See the GNU General Public License for *
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* more details, a copy of which can be found in the file COPYING *
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* included with this package. *
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*******************************************************************/
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#include <linux/blkdev.h>
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#include <linux/delay.h>
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#include <linux/dma-mapping.h>
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#include <linux/idr.h>
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#include <linux/interrupt.h>
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#include <linux/kthread.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_transport_fc.h>
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#include "lpfc_hw4.h"
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#include "lpfc_hw.h"
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#include "lpfc_sli.h"
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#include "lpfc_sli4.h"
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#include "lpfc_nl.h"
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#include "lpfc_disc.h"
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#include "lpfc_scsi.h"
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#include "lpfc.h"
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#include "lpfc_logmsg.h"
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#include "lpfc_crtn.h"
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#include "lpfc_version.h"
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#include "lpfc_vport.h"
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inline void lpfc_vport_set_state(struct lpfc_vport *vport,
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enum fc_vport_state new_state)
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{
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struct fc_vport *fc_vport = vport->fc_vport;
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if (fc_vport) {
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/*
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* When the transport defines fc_vport_set state we will replace
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* this code with the following line
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*/
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/* fc_vport_set_state(fc_vport, new_state); */
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if (new_state != FC_VPORT_INITIALIZING)
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fc_vport->vport_last_state = fc_vport->vport_state;
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fc_vport->vport_state = new_state;
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}
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/* for all the error states we will set the invternal state to FAILED */
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switch (new_state) {
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case FC_VPORT_NO_FABRIC_SUPP:
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case FC_VPORT_NO_FABRIC_RSCS:
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case FC_VPORT_FABRIC_LOGOUT:
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case FC_VPORT_FABRIC_REJ_WWN:
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case FC_VPORT_FAILED:
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vport->port_state = LPFC_VPORT_FAILED;
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break;
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case FC_VPORT_LINKDOWN:
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vport->port_state = LPFC_VPORT_UNKNOWN;
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break;
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default:
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/* do nothing */
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break;
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}
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}
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static int
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lpfc_alloc_vpi(struct lpfc_hba *phba)
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{
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unsigned long vpi;
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spin_lock_irq(&phba->hbalock);
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/* Start at bit 1 because vpi zero is reserved for the physical port */
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vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1);
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if (vpi > phba->max_vpi)
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vpi = 0;
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else
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set_bit(vpi, phba->vpi_bmask);
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if (phba->sli_rev == LPFC_SLI_REV4)
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phba->sli4_hba.max_cfg_param.vpi_used++;
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spin_unlock_irq(&phba->hbalock);
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return vpi;
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}
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static void
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lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
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{
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if (vpi == 0)
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return;
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spin_lock_irq(&phba->hbalock);
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clear_bit(vpi, phba->vpi_bmask);
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if (phba->sli_rev == LPFC_SLI_REV4)
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phba->sli4_hba.max_cfg_param.vpi_used--;
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spin_unlock_irq(&phba->hbalock);
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}
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static int
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lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
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{
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LPFC_MBOXQ_t *pmb;
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MAILBOX_t *mb;
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struct lpfc_dmabuf *mp;
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int rc;
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pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
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if (!pmb) {
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return -ENOMEM;
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}
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mb = &pmb->u.mb;
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rc = lpfc_read_sparam(phba, pmb, vport->vpi);
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if (rc) {
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mempool_free(pmb, phba->mbox_mem_pool);
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return -ENOMEM;
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}
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/*
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* Grab buffer pointer and clear context1 so we can use
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* lpfc_sli_issue_box_wait
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*/
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mp = (struct lpfc_dmabuf *) pmb->context1;
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pmb->context1 = NULL;
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pmb->vport = vport;
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rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2);
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if (rc != MBX_SUCCESS) {
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if (signal_pending(current)) {
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lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
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"1830 Signal aborted mbxCmd x%x\n",
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mb->mbxCommand);
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lpfc_mbuf_free(phba, mp->virt, mp->phys);
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kfree(mp);
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if (rc != MBX_TIMEOUT)
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mempool_free(pmb, phba->mbox_mem_pool);
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return -EINTR;
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} else {
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lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT,
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"1818 VPort failed init, mbxCmd x%x "
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"READ_SPARM mbxStatus x%x, rc = x%x\n",
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mb->mbxCommand, mb->mbxStatus, rc);
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lpfc_mbuf_free(phba, mp->virt, mp->phys);
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kfree(mp);
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if (rc != MBX_TIMEOUT)
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mempool_free(pmb, phba->mbox_mem_pool);
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return -EIO;
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}
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}
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memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
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memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
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sizeof (struct lpfc_name));
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memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
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sizeof (struct lpfc_name));
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lpfc_mbuf_free(phba, mp->virt, mp->phys);
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kfree(mp);
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mempool_free(pmb, phba->mbox_mem_pool);
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return 0;
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}
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static int
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lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn,
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const char *name_type)
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{
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/* ensure that IEEE format 1 addresses
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* contain zeros in bits 59-48
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*/
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if (!((wwn->u.wwn[0] >> 4) == 1 &&
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((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0)))
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return 1;
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lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
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"1822 Invalid %s: %02x:%02x:%02x:%02x:"
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"%02x:%02x:%02x:%02x\n",
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name_type,
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wwn->u.wwn[0], wwn->u.wwn[1],
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wwn->u.wwn[2], wwn->u.wwn[3],
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wwn->u.wwn[4], wwn->u.wwn[5],
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wwn->u.wwn[6], wwn->u.wwn[7]);
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return 0;
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}
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static int
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lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
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{
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struct lpfc_vport *vport;
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unsigned long flags;
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spin_lock_irqsave(&phba->hbalock, flags);
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list_for_each_entry(vport, &phba->port_list, listentry) {
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if (vport == new_vport)
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continue;
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/* If they match, return not unique */
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if (memcmp(&vport->fc_sparam.portName,
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&new_vport->fc_sparam.portName,
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sizeof(struct lpfc_name)) == 0) {
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spin_unlock_irqrestore(&phba->hbalock, flags);
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return 0;
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}
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}
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spin_unlock_irqrestore(&phba->hbalock, flags);
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return 1;
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}
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/**
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* lpfc_discovery_wait - Wait for driver discovery to quiesce
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* @vport: The virtual port for which this call is being executed.
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*
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* This driver calls this routine specifically from lpfc_vport_delete
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* to enforce a synchronous execution of vport
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* delete relative to discovery activities. The
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* lpfc_vport_delete routine should not return until it
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* can reasonably guarantee that discovery has quiesced.
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* Post FDISC LOGO, the driver must wait until its SAN teardown is
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* complete and all resources recovered before allowing
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* cleanup.
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*
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* This routine does not require any locks held.
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**/
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static void lpfc_discovery_wait(struct lpfc_vport *vport)
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{
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struct lpfc_hba *phba = vport->phba;
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uint32_t wait_flags = 0;
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unsigned long wait_time_max;
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unsigned long start_time;
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wait_flags = FC_RSCN_MODE | FC_RSCN_DISCOVERY | FC_NLP_MORE |
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FC_RSCN_DEFERRED | FC_NDISC_ACTIVE | FC_DISC_TMO;
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/*
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* The time constraint on this loop is a balance between the
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* fabric RA_TOV value and dev_loss tmo. The driver's
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* devloss_tmo is 10 giving this loop a 3x multiplier minimally.
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*/
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wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000);
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wait_time_max += jiffies;
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start_time = jiffies;
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while (time_before(jiffies, wait_time_max)) {
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if ((vport->num_disc_nodes > 0) ||
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(vport->fc_flag & wait_flags) ||
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((vport->port_state > LPFC_VPORT_FAILED) &&
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(vport->port_state < LPFC_VPORT_READY))) {
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lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
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"1833 Vport discovery quiesce Wait:"
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" state x%x fc_flags x%x"
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" num_nodes x%x, waiting 1000 msecs"
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" total wait msecs x%x\n",
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vport->port_state, vport->fc_flag,
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vport->num_disc_nodes,
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jiffies_to_msecs(jiffies - start_time));
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msleep(1000);
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} else {
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/* Base case. Wait variants satisfied. Break out */
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lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
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"1834 Vport discovery quiesced:"
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" state x%x fc_flags x%x"
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" wait msecs x%x\n",
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vport->port_state, vport->fc_flag,
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jiffies_to_msecs(jiffies
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- start_time));
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break;
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}
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}
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if (time_after(jiffies, wait_time_max))
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lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
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"1835 Vport discovery quiesce failed:"
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" state x%x fc_flags x%x wait msecs x%x\n",
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vport->port_state, vport->fc_flag,
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jiffies_to_msecs(jiffies - start_time));
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}
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int
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lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
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{
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struct lpfc_nodelist *ndlp;
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struct Scsi_Host *shost = fc_vport->shost;
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struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata;
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struct lpfc_hba *phba = pport->phba;
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struct lpfc_vport *vport = NULL;
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int instance;
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int vpi;
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int rc = VPORT_ERROR;
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int status;
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if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) {
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lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
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"1808 Create VPORT failed: "
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"NPIV is not enabled: SLImode:%d\n",
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phba->sli_rev);
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rc = VPORT_INVAL;
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goto error_out;
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}
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vpi = lpfc_alloc_vpi(phba);
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if (vpi == 0) {
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lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
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"1809 Create VPORT failed: "
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"Max VPORTs (%d) exceeded\n",
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phba->max_vpi);
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rc = VPORT_NORESOURCES;
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goto error_out;
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}
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/* Assign an unused board number */
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if ((instance = lpfc_get_instance()) < 0) {
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lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
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"1810 Create VPORT failed: Cannot get "
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"instance number\n");
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lpfc_free_vpi(phba, vpi);
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rc = VPORT_NORESOURCES;
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goto error_out;
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}
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vport = lpfc_create_port(phba, instance, &fc_vport->dev);
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if (!vport) {
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lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
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"1811 Create VPORT failed: vpi x%x\n", vpi);
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lpfc_free_vpi(phba, vpi);
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rc = VPORT_NORESOURCES;
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goto error_out;
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}
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vport->vpi = vpi;
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lpfc_debugfs_initialize(vport);
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if ((status = lpfc_vport_sparm(phba, vport))) {
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if (status == -EINTR) {
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lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
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"1831 Create VPORT Interrupted.\n");
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rc = VPORT_ERROR;
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} else {
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lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
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"1813 Create VPORT failed. "
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"Cannot get sparam\n");
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rc = VPORT_NORESOURCES;
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}
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lpfc_free_vpi(phba, vpi);
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destroy_port(vport);
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goto error_out;
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}
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u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
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u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
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memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
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memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
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if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") ||
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!lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) {
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lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
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"1821 Create VPORT failed. "
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"Invalid WWN format\n");
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lpfc_free_vpi(phba, vpi);
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destroy_port(vport);
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rc = VPORT_INVAL;
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goto error_out;
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}
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if (!lpfc_unique_wwpn(phba, vport)) {
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lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
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"1823 Create VPORT failed. "
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"Duplicate WWN on HBA\n");
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lpfc_free_vpi(phba, vpi);
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destroy_port(vport);
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rc = VPORT_INVAL;
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goto error_out;
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}
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/* Create binary sysfs attribute for vport */
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lpfc_alloc_sysfs_attr(vport);
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*(struct lpfc_vport **)fc_vport->dd_data = vport;
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vport->fc_vport = fc_vport;
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/*
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* In SLI4, the vpi must be activated before it can be used
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* by the port.
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*/
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if ((phba->sli_rev == LPFC_SLI_REV4) &&
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(pport->fc_flag & FC_VFI_REGISTERED)) {
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rc = lpfc_sli4_init_vpi(vport);
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if (rc) {
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lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
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"1838 Failed to INIT_VPI on vpi %d "
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"status %d\n", vpi, rc);
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rc = VPORT_NORESOURCES;
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lpfc_free_vpi(phba, vpi);
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goto error_out;
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}
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} else if (phba->sli_rev == LPFC_SLI_REV4) {
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/*
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* Driver cannot INIT_VPI now. Set the flags to
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* init_vpi when reg_vfi complete.
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*/
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vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
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lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
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rc = VPORT_OK;
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goto out;
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}
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if ((phba->link_state < LPFC_LINK_UP) ||
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(pport->port_state < LPFC_FABRIC_CFG_LINK) ||
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(phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
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lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
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rc = VPORT_OK;
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goto out;
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}
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if (disable) {
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lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
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rc = VPORT_OK;
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goto out;
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}
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/* Use the Physical nodes Fabric NDLP to determine if the link is
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* up and ready to FDISC.
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*/
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ndlp = lpfc_findnode_did(phba->pport, Fabric_DID);
|
|
if (ndlp && NLP_CHK_NODE_ACT(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;
|
|
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
|
|
|
|
ndlp = lpfc_findnode_did(vport, Fabric_DID);
|
|
if (ndlp && NLP_CHK_NODE_ACT(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 (!NLP_CHK_NODE_ACT(ndlp))
|
|
continue;
|
|
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);
|
|
spin_lock_irq(shost->host_lock);
|
|
vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
|
|
spin_unlock_irq(shost->host_lock);
|
|
|
|
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;
|
|
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
|
|
|
|
if ((phba->link_state < LPFC_LINK_UP) ||
|
|
(phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
|
|
lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
|
|
return VPORT_OK;
|
|
}
|
|
|
|
spin_lock_irq(shost->host_lock);
|
|
vport->load_flag |= FC_LOADING;
|
|
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
|
|
spin_unlock_irq(shost->host_lock);
|
|
|
|
/* 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 && NLP_CHK_NODE_ACT(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 the vport is a static vport fail the deletion. */
|
|
if ((vport->vport_flag & STATIC_VPORT) &&
|
|
!(phba->pport->load_flag & FC_UNLOADING)) {
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
|
|
"1837 vport_delete failed: Cannot delete "
|
|
"static vport.\n");
|
|
return VPORT_ERROR;
|
|
}
|
|
spin_lock_irq(&phba->hbalock);
|
|
vport->load_flag |= FC_UNLOADING;
|
|
spin_unlock_irq(&phba->hbalock);
|
|
/*
|
|
* 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))
|
|
return VPORT_INVAL;
|
|
if (!scsi_host_get(shost)) {
|
|
scsi_host_put(shost);
|
|
return VPORT_INVAL;
|
|
}
|
|
lpfc_free_sysfs_attr(vport);
|
|
|
|
lpfc_debugfs_terminate(vport);
|
|
|
|
/* Remove FC host and then SCSI host with the 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);
|
|
|
|
/* In case of driver unload, we shall not perform fabric logo as the
|
|
* worker thread already stopped at this stage and, in this case, we
|
|
* can safely skip the fabric logo.
|
|
*/
|
|
if (phba->pport->load_flag & FC_UNLOADING) {
|
|
if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
|
|
ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
|
|
phba->link_state >= LPFC_LINK_UP) {
|
|
/* First look for the Fabric ndlp */
|
|
ndlp = lpfc_findnode_did(vport, Fabric_DID);
|
|
if (!ndlp)
|
|
goto skip_logo;
|
|
else if (!NLP_CHK_NODE_ACT(ndlp)) {
|
|
ndlp = lpfc_enable_node(vport, ndlp,
|
|
NLP_STE_UNUSED_NODE);
|
|
if (!ndlp)
|
|
goto skip_logo;
|
|
}
|
|
/* Remove ndlp from vport npld list */
|
|
lpfc_dequeue_node(vport, ndlp);
|
|
|
|
/* Indicate free memory when release */
|
|
spin_lock_irq(&phba->ndlp_lock);
|
|
NLP_SET_FREE_REQ(ndlp);
|
|
spin_unlock_irq(&phba->ndlp_lock);
|
|
/* Kick off release ndlp when it can be safely done */
|
|
lpfc_nlp_put(ndlp);
|
|
}
|
|
goto skip_logo;
|
|
}
|
|
|
|
/* Otherwise, we will perform fabric logo as needed */
|
|
if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
|
|
ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
|
|
phba->link_state >= LPFC_LINK_UP &&
|
|
phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
|
|
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);
|
|
/* Indicate free memory when release */
|
|
NLP_SET_FREE_REQ(ndlp);
|
|
} else {
|
|
if (!NLP_CHK_NODE_ACT(ndlp)) {
|
|
ndlp = lpfc_enable_node(vport, ndlp,
|
|
NLP_STE_UNUSED_NODE);
|
|
if (!ndlp)
|
|
goto skip_logo;
|
|
}
|
|
|
|
/* Remove ndlp from vport list */
|
|
lpfc_dequeue_node(vport, ndlp);
|
|
spin_lock_irq(&phba->ndlp_lock);
|
|
if (!NLP_CHK_FREE_REQ(ndlp))
|
|
/* Indicate free memory when release */
|
|
NLP_SET_FREE_REQ(ndlp);
|
|
else {
|
|
/* Skip this if ndlp is already in free mode */
|
|
spin_unlock_irq(&phba->ndlp_lock);
|
|
goto skip_logo;
|
|
}
|
|
spin_unlock_irq(&phba->ndlp_lock);
|
|
}
|
|
|
|
/*
|
|
* If the vpi is not registered, then a valid FDISC doesn't
|
|
* exist and there is no need for a ELS LOGO. Just cleanup
|
|
* the ndlp.
|
|
*/
|
|
if (!(vport->vpi_state & LPFC_VPI_REGISTERED)) {
|
|
lpfc_nlp_put(ndlp);
|
|
goto skip_logo;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
if (!(phba->pport->load_flag & FC_UNLOADING))
|
|
lpfc_discovery_wait(vport);
|
|
|
|
skip_logo:
|
|
lpfc_cleanup(vport);
|
|
lpfc_sli_host_down(vport);
|
|
|
|
lpfc_stop_vport_timers(vport);
|
|
|
|
if (!(phba->pport->load_flag & FC_UNLOADING)) {
|
|
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.
|
|
*/
|
|
if (lpfc_mbx_unreg_vpi(vport))
|
|
scsi_host_put(shost);
|
|
} else
|
|
scsi_host_put(shost);
|
|
|
|
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_vports + 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 (port_iterator->load_flag & FC_UNLOADING)
|
|
continue;
|
|
if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
|
|
lpfc_printf_vlog(port_iterator, KERN_ERR, 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; i <= phba->max_vports && vports[i] != NULL; i++)
|
|
scsi_host_put(lpfc_shost_from_vport(vports[i]));
|
|
kfree(vports);
|
|
}
|
|
|
|
|
|
/**
|
|
* lpfc_vport_reset_stat_data - Reset the statistical data for the vport
|
|
* @vport: Pointer to vport object.
|
|
*
|
|
* This function resets the statistical data for the vport. This function
|
|
* is called with the host_lock held
|
|
**/
|
|
void
|
|
lpfc_vport_reset_stat_data(struct lpfc_vport *vport)
|
|
{
|
|
struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
|
|
|
|
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
|
|
if (!NLP_CHK_NODE_ACT(ndlp))
|
|
continue;
|
|
if (ndlp->lat_data)
|
|
memset(ndlp->lat_data, 0, LPFC_MAX_BUCKET_COUNT *
|
|
sizeof(struct lpfc_scsicmd_bkt));
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* lpfc_alloc_bucket - Allocate data buffer required for statistical data
|
|
* @vport: Pointer to vport object.
|
|
*
|
|
* This function allocates data buffer required for all the FC
|
|
* nodes of the vport to collect statistical data.
|
|
**/
|
|
void
|
|
lpfc_alloc_bucket(struct lpfc_vport *vport)
|
|
{
|
|
struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
|
|
|
|
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
|
|
if (!NLP_CHK_NODE_ACT(ndlp))
|
|
continue;
|
|
|
|
kfree(ndlp->lat_data);
|
|
ndlp->lat_data = NULL;
|
|
|
|
if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
|
|
ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
|
|
sizeof(struct lpfc_scsicmd_bkt),
|
|
GFP_ATOMIC);
|
|
|
|
if (!ndlp->lat_data)
|
|
lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
|
|
"0287 lpfc_alloc_bucket failed to "
|
|
"allocate statistical data buffer DID "
|
|
"0x%x\n", ndlp->nlp_DID);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* lpfc_free_bucket - Free data buffer required for statistical data
|
|
* @vport: Pointer to vport object.
|
|
*
|
|
* Th function frees statistical data buffer of all the FC
|
|
* nodes of the vport.
|
|
**/
|
|
void
|
|
lpfc_free_bucket(struct lpfc_vport *vport)
|
|
{
|
|
struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
|
|
|
|
list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
|
|
if (!NLP_CHK_NODE_ACT(ndlp))
|
|
continue;
|
|
|
|
kfree(ndlp->lat_data);
|
|
ndlp->lat_data = NULL;
|
|
}
|
|
}
|