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update P4D2 and SIGCOMM2017 examples for new checksum API (#56)

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This commit is contained in:
Han Wang
2017-10-07 11:25:24 -07:00
committed by GitHub
parent ef64a2cfd8
commit 28a8414c58
24 changed files with 53 additions and 61 deletions
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34
P4D2_2017/exercises/ipv4_forward/solution/ipv4_forward.p4
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@@ -75,7 +75,7 @@ parser ParserImpl(packet_in packet,
************ C H E C K S U M V E R I F I C A T I O N *************
*************************************************************************/
control verifyChecksum(in headers hdr, inout metadata meta) {
control verifyChecksum(inout headers hdr, inout metadata meta) {
apply { }
}
@@ -132,25 +132,21 @@ control computeChecksum(
inout headers hdr,
inout metadata meta)
{
Checksum16() ipv4_checksum;
apply {
if (hdr.ipv4.isValid()) {
hdr.ipv4.hdrChecksum = ipv4_checksum.get(
{
hdr.ipv4.version,
hdr.ipv4.ihl,
hdr.ipv4.diffserv,
hdr.ipv4.totalLen,
hdr.ipv4.identification,
hdr.ipv4.flags,
hdr.ipv4.fragOffset,
hdr.ipv4.ttl,
hdr.ipv4.protocol,
hdr.ipv4.srcAddr,
hdr.ipv4.dstAddr
});
}
update_checksum(true,
{ hdr.ipv4.version,
hdr.ipv4.ihl,
hdr.ipv4.diffserv,
hdr.ipv4.totalLen,
hdr.ipv4.identification,
hdr.ipv4.flags,
hdr.ipv4.fragOffset,
hdr.ipv4.ttl,
hdr.ipv4.protocol,
hdr.ipv4.srcAddr,
hdr.ipv4.dstAddr
},
hdr.ipv4.hdrChecksum, HashAlgorithm.csum16);
}
}