src/core/tcp_out.c

69     struct tcp_hdr *tcphdr = p->payload;
71     tcphdr->src = htons(pcb->local_port);
72     tcphdr->dest = htons(pcb->remote_port);
73     tcphdr->seqno = seqno_be;
74     tcphdr->ackno = htonl(pcb->rcv_nxt);
75     TCPH_FLAGS_SET(tcphdr, TCP_ACK);
76     tcphdr->wnd = htons(pcb->rcv_ann_wnd);
77     tcphdr->urgp = 0;
78     TCPH_HDRLEN_SET(tcphdr, (5 + optlen / 4));
79     tcphdr->chksum = 0;
84     return tcphdr;
340         seg->tcphdr = seg->p->payload;
341         seg->tcphdr->src = htons(pcb->local_port);
342         seg->tcphdr->dest = htons(pcb->remote_port);
343         seg->tcphdr->seqno = htonl(seqno);
344         seg->tcphdr->urgp = 0;
345         TCPH_FLAGS_SET(seg->tcphdr, flags);
346         /* don't fill in tcphdr->ackno and tcphdr->wnd until later */
351         TCPH_HDRLEN_SET(seg->tcphdr, (5 + optlen / 4));
354                      ")\n", ntohl(seg->tcphdr->seqno),
355                      ntohl(seg->tcphdr->seqno) + TCP_TCPLEN(seg),
377         !(TCPH_FLAGS(useg->tcphdr) & (TCP_SYN | TCP_FIN)) &&
446     if (seg != NULL && seglen > 0 && seg->tcphdr != NULL
448         TCPH_SET_FLAG(seg->tcphdr, TCP_PSH);
496     struct tcp_hdr *tcphdr;
531          ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len > wnd)) {
547         tcphdr = tcp_output_set_header(pcb, p, optlen, htonl(pcb->snd_nxt));
554             tcp_build_timestamp_option(pcb, (u32_t *) (tcphdr + 1));
560             p->nicflags |= TCPH_HDRLEN(tcphdr) << NETIF_TXFLAG_TCPHDRLEN_SHIFT;
561             tcphdr->chksum =
565             tcphdr->chksum =
599                      ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len,
600                      ntohl(seg->tcphdr->seqno), pcb->lastack));
605            ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len <= wnd) {
607                     (TCPH_FLAGS(seg->tcphdr) & TCP_RST) == 0);
624                      ntohl(seg->tcphdr->seqno) + seg->len - pcb->lastack,
625                      ntohl(seg->tcphdr->seqno), pcb->lastack, i));
632             TCPH_SET_FLAG(seg->tcphdr, TCP_ACK);
637         snd_nxt = ntohl(seg->tcphdr->seqno) + TCP_TCPLEN(seg);
654                     (ntohl(seg->tcphdr->seqno), ntohl(useg->tcphdr->seqno))) {
659                            TCP_SEQ_LT(ntohl((*cur_seg)->tcphdr->seqno),
660                                       ntohl(seg->tcphdr->seqno))) {
679         ntohl(seg->tcphdr->seqno) - pcb->lastack + seg->len > pcb->snd_wnd) {
706     seg->tcphdr->ackno = htonl(pcb->rcv_nxt);
709     seg->tcphdr->wnd = htons(pcb->rcv_ann_wnd);
715     opts = (u32_t *) (seg->tcphdr + 1);
745         pcb->rtseq = ntohl(seg->tcphdr->seqno);
752                  htonl(seg->tcphdr->seqno),
753                  htonl(seg->tcphdr->seqno) + seg->len));
755     len = (u16_t) ((u8_t *) seg->tcphdr - (u8_t *) seg->p->payload);
760     seg->p->payload = seg->tcphdr;
762     seg->tcphdr->chksum = 0;
768             TCPH_HDRLEN(seg->tcphdr) << NETIF_TXFLAG_TCPHDRLEN_SHIFT;
769         seg->tcphdr->chksum = (~inet_chksum_pseudo_partial(seg->p,
775         seg->tcphdr->chksum = inet_chksum_pseudo(seg->p,
818     struct tcp_hdr *tcphdr;
829     tcphdr = p->payload;
830     tcphdr->src = htons(local_port);
831     tcphdr->dest = htons(remote_port);
832     tcphdr->seqno = htonl(seqno);
833     tcphdr->ackno = htonl(ackno);
834     TCPH_FLAGS_SET(tcphdr, TCP_RST | TCP_ACK);
835     tcphdr->wnd = htons(TCP_WND);
836     tcphdr->urgp = 0;
837     TCPH_HDRLEN_SET(tcphdr, 5);
839     tcphdr->chksum = 0;
841     tcphdr->chksum = inet_chksum_pseudo(p, local_ip, remote_ip,
911            TCP_SEQ_LT(ntohl((*cur_seg)->tcphdr->seqno),
912                       ntohl(seg->tcphdr->seqno))) {
939     struct tcp_hdr *tcphdr;
962     tcphdr = tcp_output_set_header(pcb, p, 0, htonl(pcb->snd_nxt - 1));
965     tcphdr->chksum = inet_chksum_pseudo(p, &pcb->local_ip, &pcb->remote_ip,
997     struct tcp_hdr *tcphdr;
1028     tcphdr = tcp_output_set_header(pcb, p, 0, seg->tcphdr->seqno);
1034     tcphdr->chksum = inet_chksum_pseudo(p, &pcb->local_ip, &pcb->remote_ip,