taglinefilesource code
FW_REJECT120net/ipv4/ip_forward.ccase FW_REJECT:
FW_REJECT358net/ipv4/ip_forward.cif (fw_res == FW_REJECT)
FW_REJECT512net/ipv4/ip_fw.canswer = FW_REJECT;
FW_REJECT893net/ipv4/ip_fw.celse if (ret == FW_REJECT)  
FW_REJECT309net/ipv4/ip_input.cif(err==FW_REJECT)
FW_REJECT90net/ipv4/ipip.cif(err==FW_REJECT)