SMB2_QUERY_DIRECTORY_IOV_SIZE
struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
struct kvec iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
rqst.rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;