dr_random_req
taskq_req->dr_random_req.rr_buf = buf;
taskq_req->dr_random_req.rr_len = len;
taskq_req->dr_random_req.rr_session_id = sid;
taskq_req->dr_random_req.rr_entropy_est = entropy_est;
taskq_req->dr_random_req.rr_flags = flags;
for (i = 0; i < taskq_req->dr_random_req.rr_len; i++)
taskq_req->dr_random_req.rr_buf[i] = c++;