tools/test/p4src/tor/tor.p4

// Copyright (c) 2017, Google Inc.
//
// P4_16 specification for a ToR (top-of-rack) switch.
// Status: WORK IN PROGRESS
// Note: This code has not been tested and is expected to contain bugs.

#include "parser.p4"
#include "class_id.p4"
#include "spoof_protection.p4"
#include "l3_fwd.p4"
#include "packetio.p4"
#include "punt.p4"
#include "vrf.p4"
#include "ipv4_checksum.p4"


control ingress_tor(inout parsed_packet_t hdr,
                    inout local_metadata_t local_metadata,
                    inout standard_metadata_t standard_metadata) {
  // L123-DEMO-HACK: BEGIN
  counter(511, CounterType.packets_and_bytes) ingress_port_counter;
  // L123-DEMO-HACK: END
  apply {
    // L123-DEMO-HACK: BEGIN
    ingress_port_counter.count((bit<32>) standard_metadata.ingress_port);
    // L123-DEMO-HACK: END
    if (hdr.packet_out.isValid()) {
      packetio_ingress.apply(hdr, local_metadata, standard_metadata);
    }
    vrf.apply(hdr, local_metadata, standard_metadata);
    class_id.apply(hdr, local_metadata, standard_metadata);
    l3_fwd.apply(hdr, local_metadata, standard_metadata);
    punt.apply(hdr, local_metadata, standard_metadata);
  }
} // end ingress_tor

control egress_tor(inout parsed_packet_t hdr,
                   inout local_metadata_t local_metadata,
                   inout standard_metadata_t standard_metadata) {
  // L123-DEMO-HACK: BEGIN
  counter(511, CounterType.packets_and_bytes) egress_port_counter;
  // L123-DEMO-HACK: END
  apply {
    // L123-DEMO-HACK: BEGIN
    egress_port_counter.count((bit<32>) standard_metadata.egress_port);
    // L123-DEMO-HACK: END
    packetio_egress.apply(hdr, local_metadata, standard_metadata);
    spoof_protection.apply(hdr, local_metadata, standard_metadata);
  }
}

V1Switch(pkt_parser(), verify_checksum(), ingress_tor(), egress_tor(),
         compute_checksum(), pkt_deparser()) main;