115 lines
2.1 KiB
Plaintext
115 lines
2.1 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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// to test direct meters
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// #define USE_DIRECT_METER
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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 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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header_type meta_t {
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fields {
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meter_tag : 32;
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}
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}
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metadata meta_t meta;
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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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metadata intrinsic_metadata_t intrinsic_metadata;
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parser parse_ethernet {
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extract(ethernet);
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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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#ifdef USE_DIRECT_METER
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meter my_meter {
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type: packets; // or bytes
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direct: m_table;
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result: meta.meter_tag;
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}
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#else
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meter my_meter {
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type: packets; // or bytes
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static: m_table;
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instance_count: 16384;
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}
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#endif
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action m_action(meter_idx) {
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#ifdef USE_DIRECT_METER
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// just a hack to ensure that meter_idx is not removed by compiler
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modify_field(standard_metadata.egress_spec, meter_idx);
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#else
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execute_meter(my_meter, meter_idx, meta.meter_tag);
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#endif
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modify_field(standard_metadata.egress_spec, 1);
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}
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table m_table {
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reads {
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ethernet.srcAddr : exact;
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}
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actions {
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m_action; _nop;
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}
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size : 16384;
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}
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table m_filter {
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reads {
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meta.meter_tag : exact;
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}
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actions {
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_drop; _nop;
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}
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size: 16;
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}
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control ingress {
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apply(m_table);
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apply(m_filter);
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}
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control egress {
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}
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