diff options
Diffstat (limited to 'base/inet.cc')
| -rw-r--r-- | base/inet.cc | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/base/inet.cc b/base/inet.cc index ac0758c1f..0b9e32854 100644 --- a/base/inet.cc +++ b/base/inet.cc @@ -46,16 +46,17 @@ eaddr_string(const uint8_t a[6]) uint16_t IpHdr::ip_cksum() const { - uint16_t sum = ip_cksum_add(this, hlen(), 0); - return ip_cksum_carry(sum); + int sum = ip_cksum_add(this, hlen(), 0); + sum = ip_cksum_carry(sum); + return sum; } uint16_t IpHdr::tu_cksum() const { - uint16_t sum = ip_cksum_add(payload(), len() - hlen(), 0); - sum = ip_cksum_add(&ip_src, 4, sum); - sum = ip_cksum_add(&ip_dst, 4, sum); - sum += htons(ip_p + ip_len); - return ip_cksum_carry(sum); + int sum = ip_cksum_add(payload(), len() - hlen(), 0); + sum = ip_cksum_add(&ip_src, 8, sum); // source and destination + sum += htons(ip_p + len() - hlen()); + sum = ip_cksum_carry(sum); + return sum; } |