Lines Matching defs:sum
162 int32_t sum;
179 sum = ~ntohs(ip->ip_sum) & 0xffff;
180 sum += 0xff00 + (~old & 0xff) + dsfield;
181 sum = (sum >> 16) + (sum & 0xffff);
182 sum += (sum >> 16); /* add carry */
184 ip->ip_sum = htons(~sum & 0xffff);
242 int sum;
267 sum = ~ntohs(ip->ip_sum) & 0xffff;
268 sum += (~otos & 0xffff) + ip->ip_tos;
269 sum = (sum >> 16) + (sum & 0xffff);
270 sum += (sum >> 16); /* add carry */
271 ip->ip_sum = htons(~sum & 0xffff);