Lines Matching refs:th

144   register struct tcp_hdr *th;
166   th = (struct tcp_hdr *)&((long *)ip)[hlen];
167   if ((TCPH_FLAGS(th) & (TCP_SYN|TCP_FIN|TCP_RST|TCP_ACK)) != TCP_ACK) {
180       || *(long *)th != ((long *)&cs->cs_ip)[IPH_HL(&cs->cs_ip)]) {
201           && *(long *)th == ((long *)&cs->cs_ip)[IPH_HL(&cs->cs_ip)]) {
216     hlen += TCPH_HDRLEN(th);
239   hlen += TCPH_HDRLEN(th);
252    * check is unnecessary but costless).  The 4th line checks the TCP
253    * header length.  The 5th line checks IP options, if any.  The 6th
261       || TCPH_HDRLEN(th) != TCPH_HDRLEN(oth) 
263       || (TCPH_HDRLEN(th) > 5 && BCMP(th + 1, oth + 1, (TCPH_HDRLEN(th) - 5) << 2))) {
273   if (TCPH_FLAGS(th) & TCP_URG) {
274     deltaS = ntohs(th->urgp);
277   } else if (th->urgp != oth->urgp) {
285   if ((deltaS = (u_short)(ntohs(th->wnd) - ntohs(oth->wnd))) != 0) {
290   if ((deltaL = ntohl(th->ackno) - ntohl(oth->ackno)) != 0) {
299   if ((deltaL = ntohl(th->seqno) - ntohl(oth->seqno)) != 0) {
355   if (TCPH_FLAGS(th) & TCP_PSH) {
362   deltaA = ntohs(th->chksum);
467   struct tcp_hdr *th;
503   th = (struct tcp_hdr *)&((u_char *)&cs->cs_ip)[hlen];
504   th->chksum = htons((*cp << 8) | cp[1]);
507     TCPH_SET_FLAG(th, TCP_PSH);
509     TCPH_UNSET_FLAG(th, TCP_PSH);
517       tmp = ntohl(th->ackno) + i;
518       th->ackno = htonl(tmp);
519       tmp = ntohl(th->seqno) + i;
520       th->seqno = htonl(tmp);
526     tmp = ntohl(th->seqno) + ntohs(IPH_LEN(&cs->cs_ip)) - cs->cs_hlen;
527     th->seqno = htonl(tmp);
532       TCPH_SET_FLAG(th, TCP_URG);
533       DECODEU(th->urgp);
535       TCPH_UNSET_FLAG(th, TCP_URG);
538       DECODES(th->wnd);
541       DECODEL(th->ackno);
544       DECODEL(th->seqno);