nvme_get_feature_length2(2)
Retreive the command payload length for a specific feature identifier
Description
nvme_get_feature_length2
NAME
nvme_get_feature_length2 - Retreive the command payload length for a specific feature identifier
SYNOPSIS
int nvme_get_feature_length2 (int fid , __u32 cdw11 , enum nvme_data_tfr dir , __u32 *len );
ARGUMENTS
|
fid |
Feature identifier, see enum nvme_features_id. | ||
|
cdw11 |
The cdw11 value may affect the transfer (only known fid is NVME_FEAT_FID_HOST_ID) | ||
|
dir |
Data transfer direction: false - host to controller, true - controller to host may affect the transfer (only known fid is NVME_FEAT_FID_HOST_MEM_BUF). | ||
|
len |
On success, set to this features payload length in bytes. |
RETURN
0 on success, -1 with errno set to EINVAL if the function did not recognize fid.