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@xxxxxxxxxxxx>
Signed-off-by: James Smart <james.smart@xxxxxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_attr.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 7d81f44630ee..9d2397b795f4 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;
}
--
2.13.1
