Lines Matching refs:acc
455 * The following macro is used to update an internet checksum. "acc" is a
460 #define ADJUST_CHECKSUM(acc, cksum) { \
461 acc += cksum; \
462 if (acc < 0) { \
463 acc = -acc; \
464 acc = (acc >> 16) + (acc & 0xffff); \
465 acc += acc >> 16; \
466 cksum = (u_short) ~acc; \
468 acc = (acc >> 16) + (acc & 0xffff); \
469 acc += acc >> 16; \
470 cksum = (u_short) acc; \
484 int opt, optlen, acc, ip_off, mss, maxmss;
526 acc = htons(mss);
527 acc -= htons(maxmss);
528 ADJUST_CHECKSUM(acc, th->th_sum);