diff options
| author | James Smart <jsmart2021@gmail.com> | 2018-10-23 13:41:10 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-11-06 20:42:51 -0500 |
| commit | 7ea92eb4589dbf0cff7ee169e3c23eae00149762 (patch) | |
| tree | c6f15521ae986f0b95d866ac62b1617a9166734f /drivers/scsi/lpfc/lpfc_attr.c | |
| parent | d83ca3ea833d7a66d49225e4191c4e37cab8f079 (diff) | |
| download | linux-7ea92eb4589dbf0cff7ee169e3c23eae00149762.tar.gz linux-7ea92eb4589dbf0cff7ee169e3c23eae00149762.tar.bz2 linux-7ea92eb4589dbf0cff7ee169e3c23eae00149762.zip | |
scsi: lpfc: Implement GID_PT on Nameserver query to support faster failover
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>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_attr.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index dda7f450b96d..1b19e8c6d7f3 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -5070,6 +5070,18 @@ LPFC_ATTR_RW(fcp_io_sched, LPFC_FCP_SCHED_ROUND_ROBIN, "issuing commands [0] - Round Robin, [1] - Current CPU"); /* + * lpfc_ns_query: Determine algrithmn for NameServer queries after RSCN + * range is [0,1]. Default value is 0. + * For [0], GID_FT is used for NameServer queries after RSCN (default) + * For [1], GID_PT is used for NameServer queries after RSCN + * + */ +LPFC_ATTR_RW(ns_query, LPFC_NS_QUERY_GID_FT, + LPFC_NS_QUERY_GID_FT, LPFC_NS_QUERY_GID_PT, + "Determine algorithm NameServer queries after RSCN " + "[0] - GID_FT, [1] - GID_PT"); + +/* # lpfc_fcp2_no_tgt_reset: Determine bus reset behavior # range is [0,1]. Default value is 0. # For [0], bus reset issues target reset to ALL devices @@ -5514,6 +5526,7 @@ struct device_attribute *lpfc_hba_attrs[] = { &dev_attr_lpfc_scan_down, &dev_attr_lpfc_link_speed, &dev_attr_lpfc_fcp_io_sched, + &dev_attr_lpfc_ns_query, &dev_attr_lpfc_fcp2_no_tgt_reset, &dev_attr_lpfc_cr_delay, &dev_attr_lpfc_cr_count, @@ -6564,6 +6577,7 @@ void lpfc_get_cfgparam(struct lpfc_hba *phba) { lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched); + lpfc_ns_query_init(phba, lpfc_ns_query); lpfc_fcp2_no_tgt_reset_init(phba, lpfc_fcp2_no_tgt_reset); lpfc_cr_delay_init(phba, lpfc_cr_delay); lpfc_cr_count_init(phba, lpfc_cr_count); |