taglinefilesource code
fw_res102net/ipv4/ip_forward.cint fw_res = 0;    /* Forwarding result */  
fw_res116net/ipv4/ip_forward.cfw_res=call_fw_firewall(PF_INET, dev, skb->h.iph);
fw_res117net/ipv4/ip_forward.cswitch (fw_res) {
fw_res252net/ipv4/ip_forward.cif (!(is_frag&IPFWD_MASQUERADED) && fw_res==FW_MASQUERADE)
fw_res356net/ipv4/ip_forward.cif((fw_res = call_out_firewall(PF_INET, skb2->dev, iph)) < FW_ACCEPT)
fw_res360net/ipv4/ip_forward.cif (fw_res == FW_REJECT)