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/*
* Copyright 2017-present Open Networking Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <core.p4>
#include <v1model.p4>
#include "include/defines.p4"
#include "include/headers.p4"
#define SELECTOR_WIDTH 64
const bit<SELECTOR_WIDTH> ONE = 64w1;
typedef bit<16> group_id_t;
struct wcmp_metadata_t {
group_id_t group_id;
bit<8> numBits;
bit<SELECTOR_WIDTH> selector;
}
struct metadata_t {
wcmp_metadata_t wcmp_metadata;
intrinsic_metadata_t intrinsic_metadata;
}
#include "include/parsers.p4"
#include "include/port_counters.p4"
#include "include/checksums.p4"
#include "include/actions.p4"
#include "include/packet_io.p4"
control ingress(inout headers_t hdr, inout metadata_t meta, inout standard_metadata_t standard_metadata) {
direct_counter(CounterType.packets) table0_counter;
direct_counter(CounterType.packets) wcmp_group_table_counter;
action wcmp_group(group_id_t group_id) {
meta.wcmp_metadata.group_id = group_id;
hash(meta.wcmp_metadata.numBits, HashAlgorithm.crc16, (bit<64>)2,
{ hdr.ipv4.srcAddr, hdr.ipv4.dstAddr, hdr.ipv4.protocol, hdr.tcp.srcPort, hdr.tcp.dstPort, hdr.udp.srcPort,
hdr.udp.dstPort },
(bit<128>)62);
}
action wcmp_set_selector() {
meta.wcmp_metadata.selector = ((ONE << meta.wcmp_metadata.numBits) - ONE) << (SELECTOR_WIDTH - meta.wcmp_metadata.numBits);
}
table table0 {
support_timeout = true;
actions = {
set_egress_port(standard_metadata);
wcmp_group;
send_to_cpu(standard_metadata);
_drop(standard_metadata);
}
key = {
standard_metadata.ingress_port: ternary;
hdr.ethernet.dstAddr : ternary;
hdr.ethernet.srcAddr : ternary;
hdr.ethernet.etherType : ternary;
}
counters = table0_counter;
default_action = _drop(standard_metadata);
}
table wcmp_group_table {
actions = {
set_egress_port(standard_metadata);
}
key = {
meta.wcmp_metadata.group_id : exact;
meta.wcmp_metadata.selector: lpm;
}
counters = wcmp_group_table_counter;
}
PortCountersControl() port_counters_control;
PacketIoIngressControl() packet_io_ingress_control;
apply {
packet_io_ingress_control.apply(hdr, standard_metadata);
if (!hdr.packet_out.isValid()) {
switch (table0.apply().action_run) {
wcmp_group: {
wcmp_set_selector();
wcmp_group_table.apply();
}
}
}
port_counters_control.apply(hdr, meta, standard_metadata);
}
}
control egress(inout headers_t hdr, inout metadata_t meta, inout standard_metadata_t standard_metadata) {
PacketIoEgressControl() packet_io_egress_control;
apply {
packet_io_egress_control.apply(hdr, standard_metadata);
}
}
V1Switch(ParserImpl(), verifyChecksum(), ingress(), egress(), computeChecksum(), DeparserImpl()) main;