ipfilter/netinet/ip_nat.c

888 	u_32_t sum1;
898 		sum1 = partial;
899 		sum1 = (sum1 & 0xffff) + (sum1 >> 16);
900 		*sp = htons(sum1);
903 	sum1 = (~ntohs(*sp)) & 0xffff;
904 	sum1 += (n);
905 	sum1 = (sum1 >> 16) + (sum1 & 0xffff);
907 	sum1 = (sum1 >> 16) + (sum1 & 0xffff);
908 	sumshort = ~(u_short)sum1;
929 	u_32_t sum1;
939 		sum1 = partial;
940 		sum1 = (sum1 & 0xffff) + (sum1 >> 16);
941 		*sp = htons(sum1);
945 	sum1 = (~ntohs(*sp)) & 0xffff;
946 	sum1 += ~(n) & 0xffff;
947 	sum1 = (sum1 >> 16) + (sum1 & 0xffff);
949 	sum1 = (sum1 >> 16) + (sum1 & 0xffff);
950 	sumshort = ~(u_short)sum1;
979 	u_32_t sum1;
984 	sum1 = (~ntohs(*sp)) & 0xffff;
985 	sum1 += (n);
986 	sum1 = (sum1 >> 16) + (sum1 & 0xffff);
988 	sum1 = (sum1 >> 16) + (sum1 & 0xffff);
989 	sumshort = ~(u_short)sum1;
3299 	u_32_t sum1, sum2, sumd;
3311 		sum1 = LONG_SUM(ntohs(nat->nat_oicmpid));
3313 		CALC_SUMD(sum1, sum2, sumd);
3319 		sum1 = LONG_SUM(ntohl(nat->nat_osrcaddr) + \
3323 		CALC_SUMD(sum1, sum2, sumd);
3326 		sum1 = LONG_SUM(ntohl(nat->nat_odstaddr) + \
3330 		CALC_SUMD(sum1, sum2, sumd);
3341 		sum1 = LONG_SUM(ntohl(nat->nat_nsrcaddr));
3342 		sum1 += LONG_SUM(ntohl(nat->nat_ndstaddr));
3344 		sum1 = LONG_SUM(ntohl(nat->nat_osrcaddr));
3345 		sum1 += LONG_SUM(ntohl(nat->nat_odstaddr));
3347 	sum1 += nat->nat_pr[1];
3348 	nat->nat_sumd[1] = (sum1 & 0xffff) + (sum1 >> 16);
3350 	sum1 = LONG_SUM(ntohl(nat->nat_osrcaddr));
3352 	CALC_SUMD(sum1, sum2, sumd);
3355 	sum1 = LONG_SUM(ntohl(nat->nat_odstaddr));
3357 	CALC_SUMD(sum1, sum2, sumd);
3777 	u_32_t sum1, sum2, sumd, sumd2;
3911 	sum1 = 0;
3914 	CALC_SUMD(a2.s_addr, a3.s_addr, sum1);
3916 	sumd = sum2 + sum1;
3921 	sum1 = 0;
3945 			sum1 = ntohs(nat->nat_osport);
3950 			tcp->th_sport = htons(sum1);
3953 			sum1 = ntohs(nat->nat_ndport);
3959 			tcp->th_sport = htons(sum1);
3961 		CALC_SUMD(sum4, sum1, sumt);
3985 					CALC_SUMD(sum1, sum4, sumd2);
3993 					CALC_SUMD(sum1, sum4, sumd2);
4030 				sum1 = ntohs(orgicmp->icmp_id);
4032 				CALC_SUMD(sum1, sum2, sumd);
5565 	u_32_t sumd, ipsumd, sum1, sum2;
5620 			sum1 = nat->nat_osrcaddr;
5622 			CALC_SUMD(sum1, sum2, sumd);
5638 			sum1 = nat->nat_odstaddr;
5640 			CALC_SUMD(sum1, sum2, sumd);
5665 		sum1 = ntohs(ip->ip_len);
5676 		CALC_SUMD(sum1, sum2, sumd);
5938 	u_32_t sum1, sum2, sumd;
6021 			sum1 = NATFSUM(nat, nat->nat_v[1], nat_nsrc6);
6029 			if (sum1 == sum2)
6035 			CALC_SUMD(sum1, sum2, sumd);
7437 			u_32_t sum1, sum2, sumd;
7439 			sum1 = ntohl(fin->fin_daddr);
7441 			CALC_SUMD(sum1, sum2, sumd);