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/* -*- P4_16 -*- */
#ifndef CHECKSUMS_P4
#define CHECKSUMS_P4
#include <core.p4>
#include <v1model.p4>
#include "headers.p4"
update_checksum_with_payload(meta.chk_icmp6 == 1,
{
hdr.ipv6.src_addr, /* 128 */
hdr.ipv6.dst_addr, /* 128 */
meta.cast_length, /* 32 */
24w0, /* 24 0's */
PROTO_ICMP6, /* 8 */
hdr.icmp6.type, /* 8 */
hdr.icmp6.code /* 8 */
},
hdr.icmp6.checksum,
HashAlgorithm.csum16
);
/* checksumming for icmp6_na_ns_option */
update_checksum_with_payload(meta.chk_icmp6_na_ns == 1,
{
hdr.ipv6.src_addr, /* 128 */
hdr.ipv6.dst_addr, /* 128 */
meta.cast_length, /* 32 */
24w0, /* 24 0's */
PROTO_ICMP6, /* 8 */
hdr.icmp6.type, /* 8 */
hdr.icmp6.code, /* 8 */
hdr.icmp6_na_ns.router,
hdr.icmp6_na_ns.solicitated,
hdr.icmp6_na_ns.override,
hdr.icmp6_na_ns.reserved,
hdr.icmp6_na_ns.target_addr,
hdr.icmp6_option_link_layer_addr.type,
hdr.icmp6_option_link_layer_addr.ll_length,
hdr.icmp6_option_link_layer_addr.mac_addr
},
hdr.icmp6.checksum,
HashAlgorithm.csum16
);
update_checksum_with_payload(meta.chk_icmp == 1,
{
hdr.icmp.type,
hdr.icmp.code
},
hdr.icmp.checksum,
HashAlgorithm.csum16
);
update_checksum(meta.chk_ipv4 == 1,
{
hdr.ipv4.version,
hdr.ipv4.ihl,
hdr.ipv4.diff_serv,
hdr.ipv4.ecn,
hdr.ipv4.totalLen,
hdr.ipv4.identification,
hdr.ipv4.flags,
hdr.ipv4.fragOffset,
hdr.ipv4.ttl,
hdr.ipv4.protocol,
hdr.ipv4.src_addr,
hdr.ipv4.dst_addr
},
hdr.ipv4.checksum,
HashAlgorithm.csum16
);
update_checksum_with_payload(meta.chk_udp_v4 == 1,
{
hdr.ipv4.src_addr,
hdr.ipv4.dst_addr,
8w0,
hdr.ipv4.protocol,
meta.length_without_ip_header,
// UDP header
hdr.udp.src_port,
hdr.udp.dst_port,
hdr.udp.payload_length
},
hdr.udp.checksum,
HashAlgorithm.csum16
);
update_checksum_with_payload(meta.chk_udp_v6 == 1,
{
hdr.ipv6.src_addr, /* 128 */
hdr.ipv6.dst_addr, /* 128 */
meta.length_without_ip_header, /* 32 */
24w0, /* 24 */
hdr.ipv6.next_header, /* 8 */
/* total: 324 */
// UDP header
hdr.udp.src_port, /* 16 */
hdr.udp.dst_port, /* 16 */
hdr.udp.payload_length /* 16 */
/* all: 372 */
},
hdr.udp.checksum,
HashAlgorithm.csum16
);
update_checksum_with_payload(meta.chk_tcp_v4 == 1,
{
hdr.ipv4.src_addr,
hdr.ipv4.dst_addr,
8w0,
hdr.ipv4.protocol,
meta.length_without_ip_header,
// TCP header
hdr.tcp.src_port,
hdr.tcp.dst_port,
hdr.tcp.seqNo,
hdr.tcp.ackNo,
hdr.tcp.data_offset,
hdr.tcp.res,
hdr.tcp.cwr,
hdr.tcp.ece,
hdr.tcp.urg,
hdr.tcp.ack,
hdr.tcp.psh,
hdr.tcp.rst,
hdr.tcp.syn,
hdr.tcp.fin,
hdr.tcp.window,
hdr.tcp.urgentPtr
},
hdr.tcp.checksum,
HashAlgorithm.csum16
);
update_checksum_with_payload(meta.chk_tcp_v6 == 1,
{
hdr.ipv6.src_addr,
hdr.ipv6.dst_addr,
meta.length_without_ip_header,
24w0,
hdr.ipv6.next_header,
// TCP header
hdr.tcp.src_port,
hdr.tcp.dst_port,
hdr.tcp.seqNo,
hdr.tcp.ackNo,
hdr.tcp.data_offset,
hdr.tcp.res,
hdr.tcp.cwr,
hdr.tcp.ece,
hdr.tcp.urg,
hdr.tcp.ack,
hdr.tcp.psh,
hdr.tcp.rst,
hdr.tcp.syn,
hdr.tcp.fin,
hdr.tcp.window,
hdr.tcp.urgentPtr
},
hdr.tcp.checksum,
HashAlgorithm.csum16);
#endif