Fix discovery failures:
- Move all accesses to the fc_flag field inside the host lock.
- Restore link state after going through linkdown processing for FCF DEAD event.
Signed-off-by: James Smart <james.smart@xxxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_els.c | 2 +-
drivers/scsi/lpfc/lpfc_hbadisc.c | 6 ++++++
drivers/scsi/lpfc/lpfc_init.c | 6 +++++-
drivers/scsi/lpfc/lpfc_vport.c | 2 ++
4 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index bb2e43a..2cc3968 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -4142,8 +4142,8 @@ lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
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;
+ spin_unlock_irq(shost->host_lock);
/* Send back ACC */
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
return 0;
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 1c27372..2445e39 100755
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -1708,7 +1708,9 @@ lpfc_init_vpi_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
lpfc_vport_set_state(vport, FC_VPORT_FAILED);
return;
}
+ spin_lock_irq(&phba->hbalock);
vport->fc_flag &= ~FC_VPORT_NEEDS_INIT_VPI;
+ spin_unlock_irq(&phba->hbalock);
if (phba->link_flag & LS_NPIV_FAB_SUPPORTED)
lpfc_initial_fdisc(vport);
@@ -2269,8 +2271,10 @@ lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
mb->mbxStatus);
break;
}
+ spin_lock_irq(&phba->hbalock);
vport->vpi_state &= ~LPFC_VPI_REGISTERED;
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+ spin_unlock_irq(&phba->hbalock);
vport->unreg_vpi_cmpl = VPORT_OK;
mempool_free(pmb, phba->mbox_mem_pool);
/*
@@ -4486,8 +4490,10 @@ lpfc_unregister_unused_fcf(struct lpfc_hba *phba)
(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED))
for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
lpfc_mbx_unreg_vpi(vports[i]);
+ spin_lock_irq(&phba->hbalock);
vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
+ spin_unlock_irq(&phba->hbalock);
}
lpfc_destroy_vport_work_array(phba, vports);
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 974ea6d..b8eb1b6 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -3006,6 +3006,7 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
struct lpfc_vport *vport;
struct lpfc_nodelist *ndlp;
struct Scsi_Host *shost;
+ uint32_t link_state;
phba->fc_eventTag = acqe_fcoe->event_tag;
phba->fcoe_eventtag = acqe_fcoe->event_tag;
@@ -3052,9 +3053,12 @@ lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
break;
/*
* Currently, driver support only one FCF - so treat this as
- * a link down.
+ * a link down, but save the link state because we don't want
+ * it to be changed to Link Down unless it is already down.
*/
+ link_state = phba->link_state;
lpfc_linkdown(phba);
+ phba->link_state = link_state;
/* Unregister FCF if no devices connected to it */
lpfc_unregister_unused_fcf(phba);
break;
diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c
index c3a70c4..e3c7fa6 100644
--- a/drivers/scsi/lpfc/lpfc_vport.c
+++ b/drivers/scsi/lpfc/lpfc_vport.c
@@ -512,8 +512,10 @@ enable_vport(struct fc_vport *fc_vport)
return VPORT_OK;
}
+ spin_lock_irq(&phba->hbalock);
vport->load_flag |= FC_LOADING;
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+ spin_unlock_irq(&phba->hbalock);
/* Use the Physical nodes Fabric NDLP to determine if the link is
* up and ready to FDISC.
--
1.6.5.2
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