| /* |
| * 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. |
| */ |
| |
| #ifndef __CHECKSUM__ |
| #define __CHECKSUM__ |
| |
| #ifdef WITH_SPGW |
| #include "spgw.p4" |
| #endif // WITH_SPGW |
| |
| control FabricComputeChecksum(inout parsed_headers_t hdr, |
| inout fabric_metadata_t meta) |
| { |
| apply { |
| update_checksum(hdr.ipv4.isValid(), |
| { |
| hdr.ipv4.version, |
| hdr.ipv4.ihl, |
| hdr.ipv4.dscp, |
| hdr.ipv4.ecn, |
| hdr.ipv4.total_len, |
| hdr.ipv4.identification, |
| hdr.ipv4.flags, |
| hdr.ipv4.frag_offset, |
| hdr.ipv4.ttl, |
| hdr.ipv4.protocol, |
| hdr.ipv4.src_addr, |
| hdr.ipv4.dst_addr |
| }, |
| hdr.ipv4.hdr_checksum, |
| HashAlgorithm.csum16 |
| ); |
| #ifdef WITH_SPGW |
| update_gtpu_checksum.apply(hdr.gtpu_ipv4, hdr.gtpu_udp, hdr.gtpu, |
| hdr.ipv4, hdr.udp); |
| #endif // WITH_SPGW |
| } |
| } |
| |
| control FabricVerifyChecksum(inout parsed_headers_t hdr, |
| inout fabric_metadata_t meta) |
| { |
| apply { |
| verify_checksum(hdr.ipv4.isValid(), |
| { |
| hdr.ipv4.version, |
| hdr.ipv4.ihl, |
| hdr.ipv4.dscp, |
| hdr.ipv4.ecn, |
| hdr.ipv4.total_len, |
| hdr.ipv4.identification, |
| hdr.ipv4.flags, |
| hdr.ipv4.frag_offset, |
| hdr.ipv4.ttl, |
| hdr.ipv4.protocol, |
| hdr.ipv4.src_addr, |
| hdr.ipv4.dst_addr |
| }, |
| hdr.ipv4.hdr_checksum, |
| HashAlgorithm.csum16 |
| ); |
| #ifdef WITH_SPGW |
| verify_gtpu_checksum.apply(hdr.gtpu_ipv4); |
| #endif // WITH_SPGW |
| } |
| } |
| |
| #endif |