123 lines
2.6 KiB
Text
123 lines
2.6 KiB
Text
#include <core.p4>
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#include <sume_switch.p4>
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#include "headers.p4"
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/********************************************************************************
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* Header
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*/
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typedef bit<48> EthAddr_t;
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header Ethernet_h {
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EthAddr_t dstAddr;
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EthAddr_t srcAddr;
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bit<16> etherType;
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}
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struct Parsed_packet {
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Ethernet_h ethernet;
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}
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// user defined metadata: can be used to share information between
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// TopParser, TopPipe, and TopDeparser
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struct user_metadata_t {
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bit<8> unused;
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}
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// digest_data, MUST be 256 bits -- what is this used for?
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struct digest_data_t {
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bit<256> unused;
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}
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/********************************************************************************
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* Parser
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*/
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@Xilinx_MaxPacketRegion(1024)
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parser TopParser(packet_in packet,
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out Parsed_packet hdr,
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out user_metadata_t meta
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out digest_data_t digest_data,
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inout sume_metadata_t sume_metadata) {
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state start {
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meta.unused = 0;
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digest_data.unused = 0;
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packet.extract(hdr.ethernet);
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transition select(hdr.ethernet.ethertype) {
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TYPE_IPV6: ipv6;
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default: accept;
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}
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}
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state ipv6 {
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packet.extract(hdr.ipv6);
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transition accept;
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}
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}
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/********************************************************************************
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* Main
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*/
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control TopPipe(inout Parsed_packet hdr,
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inout user_metadata_t meta,
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inout digest_data_t digest_data,
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inout sume_metadata_t sume_metadata) {
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action do_nothing() {
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EthAddr_t temp = p.ethernet.dstAddr;
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}
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action send_to_port1() {
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sume_metadata.dst_port = 1;
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}
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action modify_ipv6 () {
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hdr.ipv6.src_addr += 1;
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hdr.ipv6.dst_addr += 2;
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send_to_port1();
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}
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table lookup_table {
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key = {
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p.ethernet.dstAddr: exact;
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}
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actions = {
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do_nothing;
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send_to_port1;
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}
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size = 64;
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default_action = modify_ipv6;
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}
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apply {
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lookup_table.apply();
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}
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}
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/********************************************************************************
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* Deparser
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*/
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@Xilinx_MaxPacketRegion(1024)
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control TopDeparser(packet_out b,
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in Parsed_packet p,
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in user_metadata_t user_metadata,
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inout digest_data_t digest_data,
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inout sume_metadata_t sume_metadata) {
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apply {
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b.emit(p.ethernet);
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}
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}
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/********************************************************************************
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* Switch
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*/
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SimpleSumeSwitch(
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TopParser(),
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TopPipe(),
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TopDeparser()
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) main;
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