src/core/tcp_out.c

66                      len, &seg->chksum, &seg->chksum_swapped); \
68 #define TCP_DATA_COPY2(dst, src, len, chksum, chksum_swapped)  \
69   tcp_seg_add_chksum(LWIP_CHKSUM_COPY(dst, src, len), len, chksum, chksum_swapped);
72 #define TCP_DATA_COPY2(dst, src, len, chksum, chksum_swapped) MEMCPY(dst, src, len)
193   seg->chksum_swapped = 0;
566     u8_t chksum_swapped = 0;
578       TCP_DATA_COPY2((char *)p->payload + optlen, (const u8_t*)arg + pos, seglen, &chksum, &chksum_swapped);
597         chksum_swapped = 1;
636     seg->chksum_swapped = chksum_swapped;
723       &last_unsent->chksum_swapped);
1294     if (seg->chksum_swapped) {
1296       seg->chksum_swapped = 0;