+define nf_add
+ $(1)-$$($(2)) += $(3)
+ KCONFIG_$(1) += $(2)
+endef
+
+
+# core
+
+# kernel only
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_CORE,CONFIG_NETFILTER_XTABLES, $(P_XT)x_tables $(P_XT)xt_tcpudp),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_CORE,CONFIG_IP_NF_IPTABLES, $(P_V4)ip_tables),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_CORE,CONFIG_IP_NF_FILTER, $(P_V4)iptable_filter),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_CORE,CONFIG_IP_NF_MANGLE, $(P_V4)iptable_mangle),))
+
+#
+# ebtables
+#
+
+$(eval $(if $(NF_KMOD),$(call nf_add,EBTABLES,CONFIG_BRIDGE_NF_EBTABLES, $(P_EBT)ebtables),))
+
+# ebtables: tables
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_BROUTE, $(P_EBT)ebtable_broute))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_T_FILTER, $(P_EBT)ebtable_filter))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_T_NAT, $(P_EBT)ebtable_nat))
+
+# ebtables: matches
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_802_3, $(P_EBT)ebt_802_3))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_AMONG, $(P_EBT)ebt_among))
+$(eval $(call nf_add,EBTABLES_IP4,CONFIG_BRIDGE_EBT_ARP, $(P_EBT)ebt_arp))
+$(eval $(call nf_add,EBTABLES_IP4,CONFIG_BRIDGE_EBT_IP, $(P_EBT)ebt_ip))
+$(eval $(call nf_add,EBTABLES_IP6,CONFIG_BRIDGE_EBT_IP6, $(P_EBT)ebt_ip6))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_LIMIT, $(P_EBT)ebt_limit))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_MARK, $(P_EBT)ebt_mark_m))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_PKTTYPE, $(P_EBT)ebt_pkttype))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_STP, $(P_EBT)ebt_stp))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_VLAN, $(P_EBT)ebt_vlan))
+
+# targets
+$(eval $(call nf_add,EBTABLES_IP4,CONFIG_BRIDGE_EBT_ARPREPLY, $(P_EBT)ebt_arpreply))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_MARK_T, $(P_EBT)ebt_mark))
+$(eval $(call nf_add,EBTABLES_IP4,CONFIG_BRIDGE_EBT_DNAT, $(P_EBT)ebt_dnat))
+$(eval $(call nf_add,EBTABLES,CONFIG_BRIDGE_EBT_REDIRECT, $(P_EBT)ebt_redirect))
+$(eval $(call nf_add,EBTABLES_IP4,CONFIG_BRIDGE_EBT_SNAT, $(P_EBT)ebt_snat))
+
+# watchers
+$(eval $(call nf_add,EBTABLES_WATCHERS,CONFIG_BRIDGE_EBT_LOG, $(P_EBT)ebt_log))
+$(eval $(call nf_add,EBTABLES_WATCHERS,CONFIG_BRIDGE_EBT_ULOG, $(P_EBT)ebt_ulog))
+$(eval $(call nf_add,EBTABLES_WATCHERS,CONFIG_BRIDGE_EBT_NFLOG, $(P_EBT)ebt_nflog))
+
+# userland only
+$(eval $(if $(NF_KMOD),,$(call nf_add,IPT_CORE,CONFIG_IP_NF_IPTABLES, xt_standard ipt_icmp xt_tcp xt_udp)))
+
+$(eval $(call nf_add,IPT_CORE,CONFIG_IP_NF_MATCH_LIMIT, $(P_V4)ipt_limit))
+$(eval $(call nf_add,IPT_CORE,CONFIG_NETFILTER_XT_MATCH_LIMIT, $(P_XT)xt_limit))
+$(eval $(call nf_add,IPT_CORE,CONFIG_IP_NF_MATCH_MAC, $(P_V4)ipt_mac))
+$(eval $(call nf_add,IPT_CORE,CONFIG_NETFILTER_XT_MATCH_MAC, $(P_XT)xt_mac))
+$(eval $(call nf_add,IPT_CORE,CONFIG_IP_NF_MATCH_MULTIPORT, $(P_V4)ipt_multiport))
+$(eval $(call nf_add,IPT_CORE,CONFIG_NETFILTER_XT_MATCH_MULTIPORT, $(P_XT)xt_multiport))
+
+$(eval $(call nf_add,IPT_CORE,CONFIG_IP_NF_TARGET_LOG, $(P_V4)ipt_LOG))
+$(eval $(call nf_add,IPT_CORE,CONFIG_IP_NF_TARGET_TCPMSS, $(P_V4)ipt_TCPMSS))
+$(eval $(call nf_add,IPT_CORE,CONFIG_NETFILTER_XT_TARGET_TCPMSS, $(P_XT)xt_TCPMSS))
+$(eval $(call nf_add,IPT_CORE,CONFIG_IP_NF_TARGET_REJECT, $(P_V4)ipt_REJECT))
+
+
+# conntrack
+
+# kernel only
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_CONNTRACK,CONFIG_NF_CONNTRACK, $(P_XT)nf_conntrack),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_CONNTRACK,CONFIG_IP_NF_CONNTRACK, $(P_V4)ip_conntrack),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_CONNTRACK,CONFIG_NF_DEFRAG_IPV4, $(P_V4)nf_defrag_ipv4),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_CONNTRACK,CONFIG_NF_CONNTRACK_IPV4, $(P_V4)nf_conntrack_ipv4),))
+
+$(eval $(call nf_add,IPT_CONNTRACK,CONFIG_IP_NF_MATCH_STATE, $(P_V4)ipt_state))
+$(eval $(call nf_add,IPT_CONNTRACK,CONFIG_NETFILTER_XT_MATCH_STATE, $(P_XT)xt_state))
+$(eval $(call nf_add,IPT_CONNTRACK,CONFIG_IP_NF_RAW, $(P_V4)iptable_raw))
+$(eval $(call nf_add,IPT_CONNTRACK,CONFIG_NETFILTER_XT_TARGET_NOTRACK, $(P_XT)xt_NOTRACK))
+
+
+# conntrack-extra
+
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_IP_NF_MATCH_CONNBYTES, $(P_V4)ipt_connbytes))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_NETFILTER_XT_MATCH_CONNBYTES, $(P_XT)xt_connbytes))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_IP_NF_MATCH_CONNMARK, $(P_V4)ipt_connmark))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_NETFILTER_XT_MATCH_CONNMARK, $(P_XT)xt_connmark))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_IP_NF_MATCH_CONNTRACK, $(P_V4)ipt_conntrack))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_NETFILTER_XT_MATCH_CONNTRACK, $(P_XT)xt_conntrack))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_IP_NF_MATCH_HELPER, $(P_V4)ipt_helper))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_NETFILTER_XT_MATCH_HELPER, $(P_XT)xt_helper))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_IP_NF_MATCH_RECENT, $(P_V4)ipt_recent))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_NETFILTER_XT_MATCH_RECENT, $(P_XT)xt_recent))
+
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_IP_NF_TARGET_CONNMARK, $(P_V4)ipt_CONNMARK))
+$(eval $(call nf_add,IPT_CONNTRACK_EXTRA,CONFIG_NETFILTER_XT_TARGET_CONNMARK, $(P_XT)xt_CONNMARK))
+
+
+# extra
+
+# kernel only
+
+$(eval $(call nf_add,IPT_EXTRA,CONFIG_IP_NF_MATCH_CONDITION, $(P_V4)ipt_condition))
+$(eval $(call nf_add,IPT_EXTRA,CONFIG_IP_NF_MATCH_OWNER, $(P_V4)ipt_owner))
+$(eval $(call nf_add,IPT_EXTRA,CONFIG_NETFILTER_XT_MATCH_PHYSDEV, $(P_XT)xt_physdev))
+$(eval $(call nf_add,IPT_EXTRA,CONFIG_IP_NF_MATCH_PKTTYPE, $(P_V4)ipt_pkttype))
+$(eval $(call nf_add,IPT_EXTRA,CONFIG_NETFILTER_XT_MATCH_PKTTYPE, $(P_XT)xt_pkttype))
+#$(eval $(call nf_add,IPT_EXTRA,CONFIG_IP_NF_MATCH_QUOTA, $(P_V4)ipt_quota))
+$(eval $(call nf_add,IPT_EXTRA,CONFIG_NETFILTER_XT_MATCH_QUOTA, $(P_XT)xt_quota))
+
+#$(eval $(call nf_add,IPT_EXTRA,CONFIG_IP_NF_TARGET_ROUTE, $(P_V4)ipt_ROUTE))
+
+
+# filter
+
+$(eval $(call nf_add,IPT_FILTER,CONFIG_IP_NF_MATCH_LAYER7, $(P_V4)ipt_layer7))
+$(eval $(call nf_add,IPT_FILTER,CONFIG_NETFILTER_XT_MATCH_LAYER7, $(P_XT)xt_layer7))
+$(eval $(call nf_add,IPT_FILTER,CONFIG_IP_NF_MATCH_STRING, $(P_V4)ipt_string))
+$(eval $(call nf_add,IPT_FILTER,CONFIG_NETFILTER_XT_MATCH_STRING, $(P_XT)xt_string))
+
+
+# imq
+
+$(eval $(call nf_add,IPT_IMQ,CONFIG_IP_NF_TARGET_IMQ, $(P_V4)ipt_IMQ))
+$(eval $(call nf_add,IPT_IMQ,CONFIG_NETFILTER_XT_TARGET_IMQ, $(P_XT)xt_IMQ))
+
+
+# ipopt
+
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_MATCH_DSCP, $(P_V4)ipt_dscp))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_DSCP, $(P_XT)xt_dscp))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_TARGET_DSCP, $(P_XT)xt_DSCP))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_MATCH_ECN, $(P_V4)ipt_ecn))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_MATCH_LENGTH, $(P_V4)ipt_length))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_LENGTH, $(P_XT)xt_length))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_MATCH_MARK, $(P_V4)ipt_mark))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_MARK, $(P_XT)xt_mark))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_STATISTIC, $(P_XT)xt_statistic))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_MATCH_TCPMSS, $(P_V4)ipt_tcpmss))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_TCPMSS, $(P_XT)xt_tcpmss))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_MATCH_TIME, $(P_V4)ipt_time))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_TIME, $(P_XT)xt_time))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_MATCH_UNCLEAN, $(P_V4)ipt_unclean))
+
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_TARGET_CLASSIFY, $(P_V4)ipt_CLASSIFY ))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_TARGET_CLASSIFY, $(P_XT)xt_CLASSIFY))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_TARGET_DSCP, $(P_V4)ipt_DSCP))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_TARGET_ECN, $(P_V4)ipt_ECN))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_TARGET_MARK, $(P_V4)ipt_MARK))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_TARGET_MARK, $(P_XT)xt_MARK))