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Yi Tsengbe342052017-11-03 10:21:23 -07001/*
2 * Copyright 2017-present Open Networking Foundation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef __CHECKSUM__
18#define __CHECKSUM__
19
Carmelo Casconeb81f4be2018-01-16 23:24:01 -080020#ifdef WITH_SPGW
21#include "spgw.p4"
22#endif // WITH_SPGW
23
Yi Tsengbe342052017-11-03 10:21:23 -070024control FabricComputeChecksum(inout parsed_headers_t hdr,
25 inout fabric_metadata_t meta)
26{
27 apply {
28 update_checksum(hdr.ipv4.isValid(),
29 {
30 hdr.ipv4.version,
31 hdr.ipv4.ihl,
Jonghwan Hyuned478dc2018-08-06 15:35:18 +090032 hdr.ipv4.dscp,
33 hdr.ipv4.ecn,
Yi Tsengbe342052017-11-03 10:21:23 -070034 hdr.ipv4.total_len,
35 hdr.ipv4.identification,
36 hdr.ipv4.flags,
37 hdr.ipv4.frag_offset,
38 hdr.ipv4.ttl,
39 hdr.ipv4.protocol,
40 hdr.ipv4.src_addr,
41 hdr.ipv4.dst_addr
42 },
43 hdr.ipv4.hdr_checksum,
44 HashAlgorithm.csum16
45 );
Carmelo Casconeb81f4be2018-01-16 23:24:01 -080046#ifdef WITH_SPGW
Carmelo Cascone14cde402018-01-25 01:57:18 -080047 update_gtpu_checksum.apply(hdr.gtpu_ipv4, hdr.gtpu_udp, hdr.gtpu,
48 hdr.ipv4, hdr.udp);
Carmelo Casconeb81f4be2018-01-16 23:24:01 -080049#endif // WITH_SPGW
Yi Tsengbe342052017-11-03 10:21:23 -070050 }
51}
52
53control FabricVerifyChecksum(inout parsed_headers_t hdr,
54 inout fabric_metadata_t meta)
55{
56 apply {
57 verify_checksum(hdr.ipv4.isValid(),
58 {
59 hdr.ipv4.version,
60 hdr.ipv4.ihl,
Jonghwan Hyuned478dc2018-08-06 15:35:18 +090061 hdr.ipv4.dscp,
62 hdr.ipv4.ecn,
Yi Tsengbe342052017-11-03 10:21:23 -070063 hdr.ipv4.total_len,
64 hdr.ipv4.identification,
65 hdr.ipv4.flags,
66 hdr.ipv4.frag_offset,
67 hdr.ipv4.ttl,
68 hdr.ipv4.protocol,
69 hdr.ipv4.src_addr,
70 hdr.ipv4.dst_addr
71 },
72 hdr.ipv4.hdr_checksum,
73 HashAlgorithm.csum16
74 );
Yi Tsengbe342052017-11-03 10:21:23 -070075 }
76}
77
78#endif