async_header_get_destination
destination = async_header_get_destination(p->header);
((async_header_get_destination(header) & 0x3f) == 0x3f)
source = async_header_get_destination(request_header); // Exchange.
destination = async_header_get_destination(p->header);
async_header_get_destination(packet->header));
async_header_get_destination(packet->header),
if (async_header_get_destination(packet->header) == ohci->node_id &&
*dst_id = async_header_get_destination(header);