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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
22typedef bit<16> group_id_t;
23typedef bit<8> group_size_t;
24
25struct ecmp_metadata_t {
26 group_id_t group_id;
27 bit<16> selector;
28}
29
30struct metadata_t {
31 ecmp_metadata_t ecmp_metadata;
32 intrinsic_metadata_t intrinsic_metadata;
33}
34
Yi Tseng21629932017-06-06 11:17:43 -070035#include "include/parsers.p4"
36#include "include/port_counters.p4"
37#include "include/checksums.p4"
38#include "include/actions.p4"
Carmelo Cascone837e6452017-07-19 20:35:22 -040039#include "include/packet_io.p4"
Yi Tseng21629932017-06-06 11:17:43 -070040
41
Carmelo Cascone837e6452017-07-19 20:35:22 -040042control ingress(inout headers_t hdr, inout metadata_t meta, inout standard_metadata_t standard_metadata) {
43
Yi Tseng21629932017-06-06 11:17:43 -070044 direct_counter(CounterType.packets) ecmp_group_table_counter;
45 direct_counter(CounterType.packets) table0_counter;
46
Carmelo Cascone837e6452017-07-19 20:35:22 -040047 action ecmp_group(group_id_t group_id, group_size_t groupSize) {
48 meta.ecmp_metadata.group_id = group_id;
49 hash(meta.ecmp_metadata.selector, HashAlgorithm.crc16, (bit<64>)0,
50 { hdr.ipv4.srcAddr, hdr.ipv4.dstAddr, hdr.ipv4.protocol, hdr.tcp.srcPort, hdr.tcp.dstPort, hdr.udp.srcPort,
51 hdr.udp.dstPort },
52 (bit<128>)groupSize);
Yi Tseng21629932017-06-06 11:17:43 -070053 }
54
55 table ecmp_group_table {
56 actions = {
57 set_egress_port(standard_metadata);
58 }
59 key = {
Carmelo Cascone837e6452017-07-19 20:35:22 -040060 meta.ecmp_metadata.group_id : exact;
Yi Tseng21629932017-06-06 11:17:43 -070061 meta.ecmp_metadata.selector: exact;
62 }
63 counters = ecmp_group_table_counter;
64 }
65
66 table table0 {
67 support_timeout = true;
68 actions = {
69 ecmp_group;
70 set_egress_port(standard_metadata);
71 send_to_cpu(standard_metadata);
72 drop(standard_metadata);
73 }
74 key = {
75 standard_metadata.ingress_port: ternary;
76 hdr.ethernet.dstAddr : ternary;
77 hdr.ethernet.srcAddr : ternary;
78 hdr.ethernet.etherType : ternary;
79 }
80 counters = table0_counter;
81 }
Carmelo Cascone837e6452017-07-19 20:35:22 -040082
Yi Tseng21629932017-06-06 11:17:43 -070083 PortCountersControl() port_counters_control;
Carmelo Cascone837e6452017-07-19 20:35:22 -040084 PacketIoIngressControl() packet_io_ingress_control;
85
Yi Tseng21629932017-06-06 11:17:43 -070086 apply {
Carmelo Cascone837e6452017-07-19 20:35:22 -040087 packet_io_ingress_control.apply(hdr, standard_metadata);
88 if (!hdr.packet_out.isValid()) {
89 switch (table0.apply().action_run) {
90 ecmp_group: {
91 ecmp_group_table.apply();
92 }
Yi Tseng21629932017-06-06 11:17:43 -070093 }
94 }
Yi Tseng21629932017-06-06 11:17:43 -070095 port_counters_control.apply(hdr, meta, standard_metadata);
96 }
97}
98
Carmelo Cascone837e6452017-07-19 20:35:22 -040099control egress(inout headers_t hdr, inout metadata_t meta, inout standard_metadata_t standard_metadata) {
100
101 PacketIoEgressControl() packet_io_egress_control;
Yi Tseng21629932017-06-06 11:17:43 -0700102 apply {
Carmelo Cascone837e6452017-07-19 20:35:22 -0400103 packet_io_egress_control.apply(hdr, standard_metadata);
Yi Tseng21629932017-06-06 11:17:43 -0700104 }
105}
106
107V1Switch(ParserImpl(), verifyChecksum(), ingress(), egress(), computeChecksum(), DeparserImpl()) main;