taglinefilesource code
PF_INET116net/ipv4/ip_forward.cfw_res=call_fw_firewall(PF_INET, dev, skb->h.iph);
PF_INET356net/ipv4/ip_forward.cif((fw_res = call_out_firewall(PF_INET, skb2->dev, iph)) < FW_ACCEPT)
PF_INET1128net/ipv4/ip_fw.cPF_INET,
PF_INET1186net/ipv4/ip_fw.cif(register_firewall(PF_INET,&ipfw_ops)<0)
PF_INET307net/ipv4/ip_input.cif ((err=call_in_firewall(PF_INET, skb->dev, iph))<FW_ACCEPT)
PF_INET364net/ipv4/ip_output.cif(call_out_firewall(PF_INET, skb->dev, iph) < FW_ACCEPT)
PF_INET706net/ipv4/ip_output.cif(call_out_firewall(PF_INET, skb->dev, iph)< FW_ACCEPT)
PF_INET910net/ipv4/ip_output.cif(!offset && call_out_firewall(PF_INET, skb->dev, iph) < FW_ACCEPT)