parser IngressParser(packet_in        packet,
    /* User */
    out my_ingress_headers_t          hdr,
    out my_ingress_metadata_t         meta,
    /* Intrinsic */
    out ingress_intrinsic_metadata_t  ig_intr_md)
{
    /* This is a mandatory state, required by Tofino Architecture */
    state start {
        packet.extract(ig_intr_md);
        packet.advance(PORT_METADATA_SIZE);
        transition accept;
    }

}