tools/test/p4src/p4-14/include/packet_io.p4

#ifndef __PACKET_IO__
#define __PACKET_IO__
#include "headers.p4"
#include "parser.p4"

action _packet_out() {
    modify_field(EGR_PORT_FIELD, packet_out_hdr.egress_port);
    remove_header(packet_out_hdr);
}

table ingress_pkt {
    actions {
        _packet_out;
    }
    default_action: _packet_out();
}

control ingress_pkt_io {
    if (valid(packet_out_hdr)) {
        apply(ingress_pkt);
    }
}

action add_packet_in_hdr() {
    add_header(packet_in_hdr);
    modify_field(packet_in_hdr.ingress_port, IGR_PORT_FIELD);
}

table egress_pkt {
    actions {
        add_packet_in_hdr;
    }
    default_action: add_packet_in_hdr();
}

control egress_pkt_io {
    #ifdef __TOFINO_BUILD__
    if (ig_intr_md_for_tm.copy_to_cpu == 1) {
    #else
    if (IGR_PORT_FIELD == CPU_PORT) {
    #endif
        apply(egress_pkt);
    }
}

#endif