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