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Nico Schottelius 2019-07-15 16:13:13 +02:00
parent 52adbb1990
commit 991b725c36
1 changed files with 1 additions and 1 deletions
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p4src/actions_delta_checksum.p4
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@ -48,7 +48,7 @@ action v6sum() {
tmp = tmp + (bit<32>) hdr.ipv6.next_header; // 8 bit tmp = tmp + (bit<32>) hdr.ipv6.next_header; // 8 bit
carryover = tmp >> 16; /* maximum is 18*(2**16) >> 16 == 18 */ carryover = tmp >> 16; /* maximum is 18*(2**16) >> 16 == 18 */
ffff) + carryover; /* Now tmp contains at maximum 65554*/ tmp = (tmp & 0xffff) + carryover; /* Now tmp contains at maximum 65554*/
carryover = tmp >> 16; /* Now carryover contains at maximum 1 */ carryover = tmp >> 16; /* Now carryover contains at maximum 1 */
tmp = tmp + carryover; /* No overrun possible anymore */ tmp = tmp + carryover; /* No overrun possible anymore */