2498.p4

#include <core.p4>
#include <v1model.p4>

header ethernet_t {
    bit<48> dst_addr;
    bit<48> src_addr;
    bit<16> eth_type;
}

header H {
    bit<8> a;
}


struct Headers {
    ethernet_t    eth_hdr;
    H    h;
}

struct Meta {
}

parser p(packet_in pkt, out Headers hdr, inout Meta m, inout standard_metadata_t sm) {
    state start {
        transition parse_hdrs;
    }
    state parse_hdrs {
        pkt.extract(hdr.eth_hdr);
        pkt.extract(hdr.h);
        transition accept;
    }
}

control ingress(inout Headers h, inout Meta m, inout standard_metadata_t sm) {

    action slice_action(inout bit<1> sliced_val) {
        h.h.a = 2;
        sliced_val = 1;
    }

    apply {
        slice_action(h.h.a[0:0]);
    }
}

control vrfy(inout Headers h, inout Meta m) {
    apply {
    }
}

control update(inout Headers h, inout Meta m) {
    apply {
    }
}

control egress(inout Headers h, inout Meta m, inout standard_metadata_t sm) {
    apply {
    }
}

control deparser(packet_out pkt, in Headers h) {
    apply {
        pkt.emit(h);
    }
}

V1Switch(p(), vrfy(), ingress(), egress(), update(), deparser()) main;