put the diff into the checksum

4 years ago · 9fdc909838
parent ff4a190d8e
commit 9fdc909838
1 changed files with 2 additions and 1 deletions
--- a/p4src/checksum_diff.p4
+++ b/p4src/checksum_diff.p4
@ -197,7 +197,8 @@ control MyIngress(inout headers hdr,
                    v4sum();
                    v6sum();
                    bit<16> diff = meta.v6sum - meta.v4sum;
-                    hdr.udp.checksum = hdr.udp.checksum + diff;
+                    # hdr.udp.checksum = hdr.udp.checksum + diff;
+                    hdr.udp.checksum = diff;

                    #else
                    meta.chk_udp_v6 = 1;