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Carmelo Casconec8d34862017-07-30 00:48:23 -04001/*
Brian O'Connora09fe5b2017-08-03 21:12:30 -07002 * Copyright 2017-present Open Networking Foundation
Carmelo Casconec8d34862017-07-30 00:48:23 -04003 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
Yi Tseng21629932017-06-06 11:17:43 -070017#include <core.p4>
18#include <v1model.p4>
19#include "include/defines.p4"
20#include "include/headers.p4"
Carmelo Cascone3304fd52017-07-30 00:43:01 -040021
Yi Tseng60ef61d2017-08-29 14:20:33 -070022struct ecmp_metadata_t {
23 ecmp_group_id_t ecmp_group_id;
24}
25
Carmelo Cascone3304fd52017-07-30 00:43:01 -040026struct metadata_t {
27 intrinsic_metadata_t intrinsic_metadata;
Yi Tseng60ef61d2017-08-29 14:20:33 -070028 ecmp_metadata_t ecmp_metadata;
Carmelo Cascone3304fd52017-07-30 00:43:01 -040029}
30
Yi Tseng21629932017-06-06 11:17:43 -070031#include "include/parsers.p4"
32#include "include/port_counters.p4"
33#include "include/checksums.p4"
34#include "include/actions.p4"
Carmelo Cascone837e6452017-07-19 20:35:22 -040035#include "include/packet_io.p4"
Yi Tseng21629932017-06-06 11:17:43 -070036
Carmelo Cascone837e6452017-07-19 20:35:22 -040037control ingress(inout headers_t hdr, inout metadata_t meta, inout standard_metadata_t standard_metadata) {
Yi Tseng21629932017-06-06 11:17:43 -070038 direct_counter(CounterType.packets) table0_counter;
Yi Tsengb62509b2017-08-12 20:01:50 -070039 direct_counter(CounterType.packets) ecmp_counter;
40
Carmelo Casconeb605cf02017-08-24 13:27:49 +020041 action do_ecmp(ecmp_group_id_t ecmp_group_id) {
Yi Tseng60ef61d2017-08-29 14:20:33 -070042 meta.ecmp_metadata.ecmp_group_id = ecmp_group_id;
Yi Tsengb62509b2017-08-12 20:01:50 -070043 }
Yi Tseng21629932017-06-06 11:17:43 -070044
45 table table0 {
Carmelo Cascone2cad9ef2017-08-01 21:52:07 +020046 /*
47 Disabling timeout here as P4runtime doesn't allow setting timeouts.
48 This way the FlowRuleTranslator will produce instances of PiTableEntry without timeout.
49 */
50 support_timeout = false;
Carmelo Casconeb2e3dba2017-07-27 12:07:09 -040051 key = {
52 standard_metadata.ingress_port : ternary;
53 hdr.ethernet.dstAddr : ternary;
54 hdr.ethernet.srcAddr : ternary;
55 hdr.ethernet.etherType : ternary;
Yi Tsengb62509b2017-08-12 20:01:50 -070056 }
57 actions = {
58 set_egress_port(standard_metadata);
59 send_to_cpu(standard_metadata);
Carmelo Casconeb605cf02017-08-24 13:27:49 +020060 do_ecmp();
Carmelo Cascone16de6db2017-08-22 00:27:57 +020061 _drop(standard_metadata);
Yi Tsengb62509b2017-08-12 20:01:50 -070062 }
63 counters = table0_counter;
Carmelo Cascone16de6db2017-08-22 00:27:57 +020064 default_action = _drop(standard_metadata);
Yi Tsengb62509b2017-08-12 20:01:50 -070065 }
66
67 action_selector(HashAlgorithm.crc16, 32w64, 32w16) ecmp_selector;
68 table ecmp {
69 support_timeout = false;
Yi Tsengb62509b2017-08-12 20:01:50 -070070 key = {
Yi Tseng60ef61d2017-08-29 14:20:33 -070071 meta.ecmp_metadata.ecmp_group_id : exact;
Carmelo Casconeb2e3dba2017-07-27 12:07:09 -040072 // Not for matching.
73 // Inputs to the hash function of the action selector.
Yi Tsengb62509b2017-08-12 20:01:50 -070074 hdr.ipv4.srcAddr : selector;
Carmelo Casconeb2e3dba2017-07-27 12:07:09 -040075 hdr.ipv4.dstAddr : selector;
76 hdr.ipv4.protocol : selector;
77 hdr.tcp.srcPort : selector;
78 hdr.tcp.dstPort : selector;
79 hdr.udp.srcPort : selector;
Yi Tsengb62509b2017-08-12 20:01:50 -070080 hdr.udp.dstPort : selector;
Carmelo Casconeb2e3dba2017-07-27 12:07:09 -040081 }
Yi Tseng21629932017-06-06 11:17:43 -070082 actions = {
83 set_egress_port(standard_metadata);
Yi Tseng21629932017-06-06 11:17:43 -070084 }
Yi Tsengb62509b2017-08-12 20:01:50 -070085 implementation = ecmp_selector;
86 counters = ecmp_counter;
Yi Tseng21629932017-06-06 11:17:43 -070087 }
Carmelo Cascone837e6452017-07-19 20:35:22 -040088
89 PacketIoIngressControl() packet_io_ingress_control;
Yi Tseng21629932017-06-06 11:17:43 -070090 PortCountersControl() port_counters_control;
Carmelo Cascone837e6452017-07-19 20:35:22 -040091
Yi Tseng21629932017-06-06 11:17:43 -070092 apply {
Carmelo Cascone837e6452017-07-19 20:35:22 -040093 packet_io_ingress_control.apply(hdr, standard_metadata);
94 if (!hdr.packet_out.isValid()) {
Yi Tsengb62509b2017-08-12 20:01:50 -070095 switch(table0.apply().action_run) {
96 do_ecmp: {
97 ecmp.apply();
98 }
99 }
Carmelo Cascone837e6452017-07-19 20:35:22 -0400100 }
Yi Tsengb62509b2017-08-12 20:01:50 -0700101
Yi Tseng21629932017-06-06 11:17:43 -0700102 port_counters_control.apply(hdr, meta, standard_metadata);
103 }
Yi Tseng21629932017-06-06 11:17:43 -0700104}
105
Carmelo Cascone837e6452017-07-19 20:35:22 -0400106control egress(inout headers_t hdr, inout metadata_t meta, inout standard_metadata_t standard_metadata) {
107
108 PacketIoEgressControl() packet_io_egress_control;
Yi Tseng21629932017-06-06 11:17:43 -0700109 apply {
Carmelo Cascone837e6452017-07-19 20:35:22 -0400110 packet_io_egress_control.apply(hdr, standard_metadata);
Yi Tseng21629932017-06-06 11:17:43 -0700111 }
112}
113
Yi Tseng21629932017-06-06 11:17:43 -0700114V1Switch(ParserImpl(), verifyChecksum(), ingress(), egress(), computeChecksum(), DeparserImpl()) main;