getip_hl
register uint_t hlen = getip_hl(ip);
*(int *)th != ((int *)&cs->cs_ip)[getip_hl(&cs->cs_ip)]) {
&cs->cs_ip)[getip_hl(&cs->cs_ip)]) {
hlen = getip_hl(buf) << 2;
hlen = getip_hl(&cs->cs_ip) << 2;