master-thesis/p4src/checksums.p4
2019-03-03 22:36:25 +01:00

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1.2 KiB
Text

/* -*- P4_16 -*- */
#ifndef CHECKSUMS_P4
#define CHECKSUMS_P4
#include <core.p4>
#include <v1model.p4>
#include "headers.p4"
/*************************************************************************
************* C H E C K S U M V E R I F I C A T I O N *************
*************************************************************************/
control MyVerifyChecksum(inout headers hdr, inout metadata meta) {
apply {}
}
/*************************************************************************
************** C H E C K S U M C O M P U T A T I O N **************
*************************************************************************/
control MyComputeChecksum(inout headers hdr, inout metadata meta) {
apply {
bit<32> icmp6_len = 32; /* for icmp6 NS */
update_checksum (
hdr.icmp6.isValid(),
{
hdr.ipv6.src_addr, /* 128 */
hdr.ipv6.dst_addr, /* 128 */
icmp6_len, /* 32 */
24w0, /* 24 0's */
PROTO_ICMP6 /* 8 */
},
hdr.icmp6.checksum,
HashAlgorithm.csum16
);
}
}
#endif