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scsi: qla2xxx: Move work element processing out of DPC thread

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DPC thread can stall during switch scan due to slow switch response.
This will stall other work element that needs attention. Moving work
element processing and relogin logic out of DPC thread and into its
own work queue.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Quinn Tran
2017-12-28 12:33:16 -08:00
committed by Martin K. Petersen
parent f13515acdc
commit 9b3e0f4d41
5 changed files with 63 additions and 27 deletions
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6
drivers/scsi/qla2xxx/qla_def.h
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@@ -3139,6 +3139,7 @@ enum qla_work_type {
QLA_EVT_UPD_FCPORT,
QLA_EVT_GNL,
QLA_EVT_NACK,
QLA_EVT_RELOGIN,
};
@@ -3447,10 +3448,6 @@ struct qlt_hw_data {
#define LEAK_EXCHG_THRESH_HOLD_PERCENT 75 /* 75 percent */
#define QLA_EARLY_LINKUP(_ha) \
((_ha->flags.n2n_ae || _ha->flags.lip_ae) && \
_ha->flags.fw_started && !_ha->flags.fw_init_done)
/*
* Qlogic host adapter specific data structure.
*/
@@ -4155,6 +4152,7 @@ typedef struct scsi_qla_host {
#define SET_ZIO_THRESHOLD_NEEDED 28
#define DETECT_SFP_CHANGE 29
#define N2N_LOGIN_NEEDED 30
#define IOCB_WORK_ACTIVE 31
unsigned long pci_flags;
#define PFLG_DISCONNECTED 0 /* PCI device removed */