| /* |
| * Copyright 2017-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* -*- P4_16 -*- */ |
| #ifndef __INT_SINK__ |
| #define __INT_SINK__ |
| |
| control process_int_sink ( |
| inout parsed_headers_t hdr, |
| inout fabric_metadata_t fabric_metadata) { |
| |
| @hidden |
| action restore_header () { |
| hdr.udp.dport = hdr.intl4_tail.dest_port; |
| hdr.ipv4.dscp = hdr.intl4_tail.dscp; |
| } |
| |
| @hidden |
| action int_sink() { |
| // restore length fields of IPv4 header and UDP header |
| bit<16> len_bytes = (bit<16>) (hdr.intl4_shim.len_words << 5w2); |
| hdr.ipv4.total_len = hdr.ipv4.total_len - len_bytes; |
| hdr.udp.len = hdr.udp.len - len_bytes; |
| // remove all the INT information from the packet |
| hdr.int_header.setInvalid(); |
| hdr.int_data.setInvalid(); |
| hdr.intl4_shim.setInvalid(); |
| hdr.intl4_tail.setInvalid(); |
| hdr.int_switch_id.setInvalid(); |
| hdr.int_port_ids.setInvalid(); |
| hdr.int_hop_latency.setInvalid(); |
| hdr.int_q_occupancy.setInvalid(); |
| hdr.int_ingress_tstamp.setInvalid(); |
| hdr.int_egress_tstamp.setInvalid(); |
| hdr.int_q_congestion.setInvalid(); |
| hdr.int_egress_tx_util.setInvalid(); |
| } |
| |
| apply { |
| restore_header(); |
| int_sink(); |
| } |
| } |
| #endif |