diff options
| author | James Smart <james.smart@emulex.com> | 2011-07-22 18:37:52 -0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-07-27 15:16:05 +0400 |
| commit | 7d791df730844932feeac3bbf3ac08b510682174 (patch) | |
| tree | 8a1dd1666dc7df7518368327b7eff45719adeae1 /drivers/scsi/lpfc/lpfc_sli4.h | |
| parent | b76f2dc91c0fff7a66616affdc039dc2e4b7ff98 (diff) | |
[SCSI] lpfc 8.3.25: Add FCF priority failover functionality
This patch implements a new FCF failover policy for the lpfc driver. It
allows the driver to choose which FCF to failover to based on the FCF
priority. This patch also introduces a new sysfs parameter
(fcf_failover_policy) to allow the user to choose which FCF failover policy
to use.
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>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli4.h')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli4.h | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index 88387c1c2dcc..19bb87ae8597 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -159,6 +159,25 @@ struct lpfc_fcf_rec { #define RECORD_VALID 0x02 }; +struct lpfc_fcf_pri_rec { + uint16_t fcf_index; +#define LPFC_FCF_ON_PRI_LIST 0x0001 +#define LPFC_FCF_FLOGI_FAILED 0x0002 + uint16_t flag; + uint32_t priority; +}; + +struct lpfc_fcf_pri { + struct list_head list; + struct lpfc_fcf_pri_rec fcf_rec; +}; + +/* + * Maximum FCF table index, it is for driver internal book keeping, it + * just needs to be no less than the supported HBA's FCF table size. + */ +#define LPFC_SLI4_FCF_TBL_INDX_MAX 32 + struct lpfc_fcf { uint16_t fcfi; uint32_t fcf_flag; @@ -178,15 +197,13 @@ struct lpfc_fcf { uint32_t eligible_fcf_cnt; struct lpfc_fcf_rec current_rec; struct lpfc_fcf_rec failover_rec; + struct list_head fcf_pri_list; + struct lpfc_fcf_pri fcf_pri[LPFC_SLI4_FCF_TBL_INDX_MAX]; + uint32_t current_fcf_scan_pri; struct timer_list redisc_wait; unsigned long *fcf_rr_bmask; /* Eligible FCF indexes for RR failover */ }; -/* - * Maximum FCF table index, it is for driver internal book keeping, it - * just needs to be no less than the supported HBA's FCF table size. - */ -#define LPFC_SLI4_FCF_TBL_INDX_MAX 32 #define LPFC_REGION23_SIGNATURE "RG23" #define LPFC_REGION23_VERSION 1 |