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)
123     tcphdr->chksum = 0;
192   seg->chksum = 0;
212   /* wnd and chksum are set in tcp_output */
285 tcp_seg_add_chksum(u16_t chksum, u16_t len, u16_t *seg_chksum,
289   /* add chksum to old chksum and fold to u16_t */
290   helper = chksum + *seg_chksum;
291   chksum = FOLD_U32T(helper);
294     chksum = SWAP_BYTES_IN_WORD(chksum);
296   *seg_chksum = chksum;
565     u16_t chksum = 0;
578       TCP_DATA_COPY2((char *)p->payload + optlen, (const u8_t*)arg + pos, seglen, &chksum, &chksum_swapped);
595       chksum = ~inet_chksum((const u8_t*)arg + pos, seglen);
598         chksum = SWAP_BYTES_IN_WORD(chksum);
635     seg->chksum = chksum;
722     tcp_seg_add_chksum(concat_chksum, concat_chksummed, &last_unsent->chksum,
962       tcphdr->chksum = ip_chksum_pseudo(p, IP_PROTO_TCP, p->tot_len,
1276   seg->tcphdr->chksum = 0;
1295       seg->chksum = SWAP_BYTES_IN_WORD(seg->chksum);
1298     acc += (u16_t)~(seg->chksum);
1299     seg->tcphdr->chksum = FOLD_U32T(acc);
1301     if (chksum_slow != seg->tcphdr->chksum) {
1304                   seg->tcphdr->chksum, chksum_slow));
1305       seg->tcphdr->chksum = chksum_slow;
1309     seg->tcphdr->chksum = ip_chksum_pseudo(seg->p, IP_PROTO_TCP,
1370   tcphdr->chksum = 0;
1380       tcphdr->chksum = ip_chksum_pseudo(p, IP_PROTO_TCP, p->tot_len,
1558       tcphdr->chksum = ip_chksum_pseudo(p, IP_PROTO_TCP, p->tot_len,
1651       tcphdr->chksum = ip_chksum_pseudo(p, IP_PROTO_TCP, p->tot_len,