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| author |   James Smart <jsmart2021@gmail.com> | 2018-09-10 10:30:43 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2018-09-11 20:37:33 -0400 |
| commit | faf0a5f829eb2860a9b1301ea86e124299c062cf (patch) | |
| tree | fd5a0f2984d2f023b118b66fa28139793df35084 | |
| parent | scsi: lpfc: raise sg count for nvme to use available sg resources (diff) | |
| download | linux-dev-faf0a5f829eb2860a9b1301ea86e124299c062cf.tar.xz linux-dev-faf0a5f829eb2860a9b1301ea86e124299c062cf.zip | |
scsi: lpfc: Raise nvme defaults to support a larger io and more connectivity
When nvme is enabled, change the default for two parameters:
sg_seg_cnt - raise the per-io sg list size so that 1MB ios are
supported (based on a 4k buffer per element).
iocb_cnt - raise the number of buffers used for things like
NVME LS request/responses to allow more concurrent requests
to for larger nvme configs.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_attr.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index fcf8b77e0d1f..18750bf2883c 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -6641,6 +6641,16 @@ lpfc_get_cfgparam(struct lpfc_hba *phba) lpfc_sli_mode_init(phba, lpfc_sli_mode); phba->cfg_enable_dss = 1; lpfc_enable_mds_diags_init(phba, lpfc_enable_mds_diags); + + /* If the NVME FC4 type is enabled, scale the sg_seg_cnt to + * accommodate 512K and 1M IOs in a single nvme buf and supply + * enough NVME LS iocb buffers for larger connectivity counts. + */ + if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) { + phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT; + phba->cfg_iocb_cnt = 5; + } + return; } |