host_cmd_ds_version_ext
struct host_cmd_ds_version_ext verext;
sizeof(struct host_cmd_ds_version_ext));
cpu_to_le16(sizeof(struct host_cmd_ds_version_ext) +
struct host_cmd_ds_version_ext *version_ext)
struct host_cmd_ds_version_ext *ver_ext = &resp->params.verext;