taglinefilesource code
doff269drivers/net/slhc.chlen = ip->ihl*4 + th->doff*4;
doff356drivers/net/slhc.c|| th->doff != cs->cs_tcp.doff
doff358drivers/net/slhc.c|| (th->doff > 5 && memcmp(th+1,cs->cs_tcpopt,((th->doff)-5)*4) != 0)){
doff479drivers/net/slhc.cif (th->doff > 5)
doff480drivers/net/slhc.cmemcpy(cs->cs_tcpopt, th+1, ((th->doff) - 5) * 4);
doff544drivers/net/slhc.chdrlen = ip->ihl * 4 + thp->doff * 4;
doff631drivers/net/slhc.cif (thp->doff > 5) {
doff632drivers/net/slhc.cmemcpy(cp, cs->cs_tcpopt, ((thp->doff) - 5) * 4);
doff633drivers/net/slhc.ccp += ((thp->doff) - 5) * 4;
doff683drivers/net/slhc.cif (cs->cs_tcp.doff > 5)
doff684drivers/net/slhc.cmemcpy(cs->cs_tcpopt, icp + ihl*4 + sizeof(struct tcphdr), (cs->cs_tcp.doff - 5) * 4);
doff685drivers/net/slhc.ccs->cs_hsize = ihl*2 + cs->cs_tcp.doff*2;
doff30include/linux/tcp.hdoff:4,
doff39include/linux/tcp.h__u16  doff:4,
doff678net/ipv4/af_inet.csk->dummy_th.doff = sizeof(sk->dummy_th)/4;
doff696net/ipv4/af_inet.csk->dummy_th.doff=sizeof(struct tcphdr)>>2;
doff825net/ipv4/tcp.cprintk("TCP=<off:%d a:%d s:%d f:%d>\n", th->doff*4, th->ack, th->syn, th->fin);
doff1277net/ipv4/tcp.ct1->doff = sizeof(*t1)/4;
doff1572net/ipv4/tcp.cskb->h.th->doff*4 + offset, used);
doff1997net/ipv4/tcp.ct1->doff = 6;
doff259net/ipv4/tcp_input.cint length=(th->doff*4)-sizeof(struct tcphdr);
doff628net/ipv4/tcp_input.cif (len != th->doff*4) 
doff1304net/ipv4/tcp_input.cskb_pull(skb,th->doff*4);
doff1305net/ipv4/tcp_input.cskb_trim(skb,len-(th->doff*4));
doff1470net/ipv4/tcp_input.cptr = sk->urg_seq - ntohl(th->seq) + th->doff*4;
doff1583net/ipv4/tcp_input.cskb->end_seq = skb->seq + th->syn + th->fin + len - th->doff*4;
doff76net/ipv4/tcp_output.cskb->end_seq = skb->seq + size - 4*th->doff;
doff544net/ipv4/tcp_output.ct1->doff = sizeof(*t1)/4;
doff725net/ipv4/tcp_output.ct1->doff = sizeof(*t1)/4+1;
doff917net/ipv4/tcp_output.cbuff = sock_wmalloc(sk, win_size + th->doff * 4 + 
doff971net/ipv4/tcp_output.cwin_size + th->doff*4 - sizeof(*th), 0);
doff987net/ipv4/tcp_output.cnth->doff * 4 + win_size , buff);