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scsi: lpfc: Implement GID_PT on Nameserver query to support faster failover

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The switches seem to respond faster to GID_PT vs GID_FT NameServer
queries.  Add support for GID_PT to be used over GID_FT to enable
faster storage failover detection. Includes addition of new module
parameter to select between GID_PT and GID_FT (GID_FT is default).

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2018-10-23 13:41:10 -07:00
committed by Martin K. Petersen
parent d83ca3ea83
commit 7ea92eb458
9 changed files with 275 additions and 4 deletions
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drivers/scsi/lpfc/lpfc_hw.h
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@@ -115,6 +115,7 @@ struct lpfc_sli_ct_request {
uint32_t PortID;
struct gid {
uint8_t PortType; /* for GID_PT requests */
#define GID_PT_N_PORT 1
uint8_t DomainScope;
uint8_t AreaScope;
uint8_t Fc4Type; /* for GID_FT requests */