50 lines
1.1 KiB
Plaintext
50 lines
1.1 KiB
Plaintext
/* Copyright 2013-present Barefoot Networks, Inc.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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parser start {
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return parse_ethernet;
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}
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#define ETHERTYPE_IPV4 0x0800
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header ethernet_t ethernet;
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parser parse_ethernet {
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extract(ethernet);
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return select(latest.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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header ipv4_t ipv4;
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#define IP_PROTOCOLS_TCP 6
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parser parse_ipv4 {
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extract(ipv4);
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return select(latest.protocol) {
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IP_PROTOCOLS_TCP : parse_tcp;
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default: ingress;
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}
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}
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header tcp_t tcp;
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parser parse_tcp {
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extract(tcp);
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return ingress;
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}
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