125 lines
2.3 KiB
Plaintext
125 lines
2.3 KiB
Plaintext
/*
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Copyright 2013-present Barefoot Networks, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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header_type ethernet_t {
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fields {
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dstAddr : 48;
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srcAddr : 48;
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etherType : 16;
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}
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}
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header_type ipv4_t {
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fields {
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version : 4;
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ihl : 4;
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diffserv : 8;
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totalLen : 16;
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identification : 16;
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flags : 3;
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fragOffset : 13;
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ttl : 8;
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protocol : 8;
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hdrChecksum : 16;
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srcAddr : 32;
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dstAddr: 32;
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}
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}
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header_type intrinsic_metadata_t {
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fields {
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mcast_grp : 4;
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egress_rid : 4;
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mcast_hash : 16;
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lf_field_list: 32;
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}
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}
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parser start {
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return parse_ethernet;
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}
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header ethernet_t ethernet;
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header ipv4_t ipv4;
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metadata intrinsic_metadata_t intrinsic_metadata;
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#define ETHERTYPE_IPV4 0x0800
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parser parse_ethernet {
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extract(ethernet);
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return select(ethernet.etherType) {
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ETHERTYPE_IPV4: parse_ipv4;
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default: ingress;
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}
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}
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parser parse_ipv4 {
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extract(ipv4);
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return ingress;
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}
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action _drop() {
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drop();
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}
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action _nop() {
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}
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field_list l3_hash_fields {
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ipv4.srcAddr;
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ipv4.protocol;
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}
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field_list_calculation ecmp_hash {
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input {
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l3_hash_fields;
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}
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algorithm : bmv2_hash;
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output_width : 16;
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}
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action_selector ecmp_selector {
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selection_key : ecmp_hash;
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}
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action set_ecmp_nexthop(port) {
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modify_field(standard_metadata.egress_spec, port);
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}
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action_profile ecmp_action_profile {
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actions {
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_nop;
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set_ecmp_nexthop;
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}
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size : 64;
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dynamic_action_selection : ecmp_selector;
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}
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table ecmp_group {
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reads {
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ipv4.dstAddr : exact;
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}
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action_profile: ecmp_action_profile;
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size : 1024;
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}
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control ingress {
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apply(ecmp_group);
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}
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control egress {
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}
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