master-thesis/p4src/checksums.p4
Nico Schottelius 3fecfad989 [p4] +,
2019-02-23 21:07:05 +01:00

39 lines
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 {
update_checksum (
hdr.icmp6.isValid(),
{
hdr.ipv6.src_addr, /* 128 */
hdr.ipv6.dst_addr, /* 128 */
hdr.ipv6.payload_length, /* 16 -> should be 32 according to RFC2460 - also static number? */
24w0, /* 24 0's */
PROTO_ICMP6 /* 8 */
},
hdr.icmp6.checksum,
HashAlgorithm.csum16);
}
}
#endif