blob: d920235651601a165a54a89bfb2839d1587c94ef [file] [log] [blame]
/*
* 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.diffserv,
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.diffserv,
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