LIO_RECV_INFO_SIZE
buf = malloc(LIO_RECV_PKT_SIZE + LIO_RECV_INFO_SIZE +
recv_info->recv_pkt = (struct lio_recv_pkt *)(buf + LIO_RECV_INFO_SIZE);
recv_info->rsvd = buf + LIO_RECV_INFO_SIZE + LIO_RECV_PKT_SIZE;