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[p4] try casting before

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Nico Schottelius 2019-02-28 11:06:11 +01:00
parent 21d1b82416
commit 1f497982b3
1 changed files with 3 additions and 1 deletions
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4
p4src/checksums.p4
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@ -21,12 +21,14 @@ control MyVerifyChecksum(inout headers hdr, inout metadata meta) {
control MyComputeChecksum(inout headers hdr, inout metadata meta) { control MyComputeChecksum(inout headers hdr, inout metadata meta) {
apply { apply {
bit<32> cksum = (bit<32>) hdr.ipv6.payload_length;
update_checksum ( update_checksum (
hdr.icmp6.isValid(), hdr.icmp6.isValid(),
{ {
hdr.ipv6.src_addr, /* 128 */ hdr.ipv6.src_addr, /* 128 */
hdr.ipv6.dst_addr, /* 128 */ hdr.ipv6.dst_addr, /* 128 */
(bit<32>) hdr.ipv6.payload_length, /* 16 bit -> should be 32 according to RFC2460 - also static number? */ cksum, /* 32 */
24w0, /* 24 0's */ 24w0, /* 24 0's */
PROTO_ICMP6 /* 8 */ PROTO_ICMP6 /* 8 */
}, },