usbd_copy_out
usbd_copy_out(pc, pos, &hdr, sizeof(hdr));
usbd_copy_out(pc, pos, &csum_hdr, sizeof(csum_hdr));
usbd_copy_out(pc, offset, mtod(m, uint8_t *), len);
usbd_copy_out(pc, hdr_off, &pkt_hdr, sizeof(pkt_hdr));
usbd_copy_out(pc, offset, mtod(m, uint8_t *), len);
usbd_copy_out(pc, actlen - sizeof(rxhdr), &rxhdr, sizeof(rxhdr));
usbd_copy_out(pc, 0, &pkt, sizeof(pkt));
usbd_copy_out(pc, actlen - sizeof(stat), &stat,
usbd_copy_out(pc, 0, &sc->sc_rx_desc, RT2573_RX_DESC_SIZE);
usbd_copy_out(pc, RT2573_RX_DESC_SIZE,
usbd_copy_out(pc, len, &sc->sc_rx_desc, RAL_RX_DESC_SIZE);
usbd_copy_out(pc, 0, mtod(m, uint8_t *), len);
void usbd_copy_out(struct usb_page_cache *cache, usb_frlength_t offset,
usbd_copy_out(pc, offset, mtod(m, uint8_t *), len);