RX_HEADER_SIZE
if ((cur_rx + packet_len + RX_HEADER_SIZE)
wrap_size = cur_rx + packet_len + RX_HEADER_SIZE
cur_rx + RX_HEADER_SIZE,
bcopy(rx_ptr + RX_HEADER_SIZE,
cur_rx + RX_HEADER_SIZE, packet_len,
bcopy(rx_ptr + RX_HEADER_SIZE, mp->b_wptr,
cur_rx += packet_len + RX_HEADER_SIZE + ETHERFCSL;
if (len <= RX_HEADER_SIZE) {
mp->b_rptr += RX_HEADER_SIZE;
ugcp->usbgc_rx_header_len = RX_HEADER_SIZE;