nf_nat_mangle_tcp_packet
if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo, protoff,
if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo, protoff,
mangled = nf_nat_mangle_tcp_packet(skb, ct, ctinfo,
if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo, protoff, matchoff,
if (!nf_nat_mangle_tcp_packet(skb, ct, ctinfo, protoff, matchoff,