TF_CLOSED
if ((tp->t_flags & TF_CLOSED) && tlen > 0 &&
if ((tp->t_flags & TF_CLOSED) && tlen &&
if ((tp->t_flags & TF_CLOSED) && tlen &&
if ((tp->t_flags & TF_CLOSED) && tlen &&
if ((tp->t_flags & TF_CLOSED) && tlen &&
tp->t_flags |= TF_CLOSED;