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/* -*- P4_16 -*- */
#include <core.p4>
#include <v1model.p4>
#include "headers.p4"
#include "settings.p4"
#define USE_NICO_DELTA_CHECKSUM 1
/*************************************************************************
* Parser
*/
parser MyParser(packet_in packet,
out headers hdr,
inout metadata meta,
inout standard_metadata_t standard_metadata) {
#include "parsers.p4"
}
control MyDeparser(packet_out packet, in headers hdr) {
#include "deparser.p4"
}
// OK-UNTIL-HERE
/*************************************************************************
************** I N G R E S S P R O C E S S I N G *******************
*************************************************************************/
control MyIngress(
inout headers hdr,
inout metadata meta,
inout standard_metadata_t standard_metadata) {
#include "actions_nat64_generic.p4"
#include "actions_egress.p4"
#include "actions_icmp6_ndp_icmp.p4"
#include "actions_arp.p4"
#include "actions_delta_checksum.p4" /* only used if enabled at compile time */
/********************** APPLYING TABLES / MAIN LOGIC **************************/
apply {
if(hdr.ipv6.isValid()) {
if(nat64.apply().hit) { /* generic / static nat64 done */
if(hdr.icmp6.isValid()) {
nat64_icmp6_generic();
if(hdr.icmp6.type == ICMP6_ECHO_REPLY) {
hdr.icmp.type = ICMP_ECHO_REPLY;
hdr.icmp.code = 0;
}
if(hdr.icmp6.type == ICMP6_ECHO_REQUEST) {
hdr.icmp.type = ICMP_ECHO_REQUEST;
hdr.icmp.code = 0;
}
}
if(hdr.udp.isValid()) {
#ifdef USE_NICO_DELTA_CHECKSUM
delta_udp_from_v6_to_v4();
#else
meta.chk_udp_v4 = 1;
#endif
}
if(hdr.tcp.isValid()) {
#ifdef USE_NICO_DELTA_CHECKSUM
delta_tcp_from_v6_to_v4();
#else
meta.chk_tcp_v4 = 1;
#endif
}
v4_networks.apply(); /* apply egress for IPv4 */
exit; /* no further v6 processing */
}
icmp6.apply(); /* icmp6 echo, icmp6 ndp */
v6_networks.apply(); /* regular egress / routing */
} else if(hdr.ipv4.isValid()) {
if(icmp.apply().hit) {
v4_networks.apply();
exit;
} else if(nat46.apply().hit) {
if(hdr.icmp.isValid()) {
nat46_icmp_generic();
if(hdr.icmp.type == ICMP_ECHO_REPLY) {
hdr.icmp6.type = ICMP6_ECHO_REPLY;
}
if(hdr.icmp.type == ICMP_ECHO_REQUEST) {
hdr.icmp6.type = ICMP6_ECHO_REQUEST;
}
}
if(hdr.udp.isValid()) {
#ifdef USE_NICO_DELTA_CHECKSUM
delta_udp_from_v4_to_v6();
#else
meta.chk_udp_v6 = 1;
#endif
}
if(hdr.tcp.isValid()) {
#ifdef USE_NICO_DELTA_CHECKSUM
delta_tcp_from_v4_to_v6();
#else
meta.chk_tcp_v6 = 1;
#endif
}
v6_networks.apply();
exit;
}
v4_networks.apply(); /* regular routing, egress */
} else if(hdr.arp.isValid()) {
if(v4_arp.apply().hit) {
v4_arp_egress.apply();
}
}
}
}
/*************************************************************************
**************** E G R E S S P R O C E S S I N G *******************
*************************************************************************/
control MyEgress(inout headers hdr,
inout metadata meta,
inout standard_metadata_t standard_metadata) {
apply {
// ingress clone
if (standard_metadata.instance_type == 1){
hdr.cpu.setValid();
hdr.cpu.task = meta.task;
hdr.cpu.ethertype = hdr.ethernet.ethertype;
hdr.cpu.ingress_port = (bit<16>) meta.ingress_port;
hdr.cpu.table_id = meta.table_id;
hdr.ethernet.ethertype = TYPE_CPU;
}
}
}
/*************************************************************************
* Checksums
*/
control MyVerifyChecksum(inout headers hdr, inout metadata meta) {
apply {}
}
control MyComputeChecksum(inout headers hdr, inout metadata meta) {
apply {
#ifndef _SUME_SWITCH_P4_
#include "checksum_bmv2.p4"
#endif
}
}
/*************************************************************************
*********************** S W I T C H *******************************
*************************************************************************/
V1Switch(
MyParser(),
MyVerifyChecksum(),
MyIngress(),
MyEgress(),
MyComputeChecksum(),
MyDeparser()
) main;