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;
doff627drivers/net/slhc.cif (thp->doff > 5) {
doff628drivers/net/slhc.cmemcpy(cp, cs->cs_tcpopt, ((thp->doff) - 5) * 4);
doff629drivers/net/slhc.ccp += ((thp->doff) - 5) * 4;
doff683drivers/net/slhc.cif (thp->doff > 5)
doff684drivers/net/slhc.cmemcpy(cs->cs_tcpopt, thp+1, ((thp->doff) - 5) * 4);
doff685drivers/net/slhc.ccs->cs_hsize = ip->ihl*2 + thp->doff*2;
doff31include/linux/tcp.hdoff:4,
doff40include/linux/tcp.h__u16  doff:4,
doff719net/ipv4/af_inet.csk->dummy_th.doff = sizeof(sk->dummy_th)/4;
doff1181net/ipv4/tcp.cskb->h.seq = ntohl(th->seq) + size - 4*th->doff;
doff1422net/ipv4/tcp.ct1->doff = sizeof(*t1)/4;
doff1441net/ipv4/tcp.cth->doff = sizeof(*th)/4;
doff1873net/ipv4/tcp.ct1->doff = sizeof(*t1)/4;
doff2207net/ipv4/tcp.cskb->h.th->doff*4 + offset, used);
doff2390net/ipv4/tcp.ct1->doff = sizeof(*t1)/4;
doff2580net/ipv4/tcp.ct1->doff = sizeof(*t1)/4;
doff2601net/ipv4/tcp.cint length=(th->doff*4)-sizeof(struct tcphdr);
doff2802net/ipv4/tcp.cnewsk->dummy_th.doff = 6;
doff2928net/ipv4/tcp.ct1->doff = sizeof(*t1)/4+1;
doff3192net/ipv4/tcp.cif (len != th->doff*4) 
doff3815net/ipv4/tcp.cskb_pull(skb,th->doff*4);
doff3816net/ipv4/tcp.cskb_trim(skb,len-(th->doff*4));
doff4188net/ipv4/tcp.cptr = sk->urg_seq - th->seq + th->doff*4;
doff4355net/ipv4/tcp.ct1->doff = 6;
doff4430net/ipv4/tcp.cnext_seq = len - 4*th->doff;
doff4974net/ipv4/tcp.cbuff = sk->prot->wmalloc(sk, win_size + th->doff * 4 + 
doff5010net/ipv4/tcp.cnth = (struct tcphdr *) skb_put(buff,th->doff*4);
doff5012net/ipv4/tcp.cmemcpy(nth, th, th->doff * 4);
doff5028net/ipv4/tcp.c(iph->ihl << 2) + th->doff * 4;
doff5079net/ipv4/tcp.cnth->doff * 4 + win_size , sk);
doff5122net/ipv4/tcp.ct1->doff = sizeof(*t1)/4;