netfilter: Add IPv6-NAT support for kernel and ipt

Thanks to Berni, Adam Novak and Sedat Dilek for patches and inspiration

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37866 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 39 insertions, 2 deletions

diff --git a/include/netfilter.mk b/include/netfilter.mk
index 33d7b8e0fe..fe31091b6c 100644
--- a/include/netfilter.mk
+++ b/include/netfilter.mk
@@ -156,21 +156,28 @@ $(eval $(call nf_add,IPT_IPV6,CONFIG_IP6_NF_TARGET_REJECT, $(P_V6)ip6t_REJECT))
 # nat
 
 # kernel only
-$(eval $(if $(NF_KMOD),$(call nf_add,IPT_NAT,CONFIG_NF_NAT, $(P_XT)nf_nat $(P_V4)nf_nat_ipv4 $(P_XT)xt_nat $(P_V4)iptable_nat, ge 3.7.0),))
 $(eval $(if $(NF_KMOD),$(call nf_add,IPT_NAT,CONFIG_NF_NAT, $(P_V4)nf_nat $(P_V4)iptable_nat, lt 3.7.0),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_NAT,CONFIG_NF_NAT, $(P_XT)nf_nat $(P_XT)xt_nat, ge 3.7.0),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_NAT,CONFIG_NF_NAT_IPV4, $(P_V4)nf_nat_ipv4 $(P_V4)iptable_nat, ge 3.7.0),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_NAT6,CONFIG_NF_NAT_IPV6, $(P_V6)nf_nat_ipv6 $(P_V6)ip6table_nat, ge 3.7.0),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_NAT6,CONFIG_IP6_NF_TARGET_MASQUERADE, $(P_V6)ip6t_MASQUERADE, ge 3.7.0),))
+$(eval $(if $(NF_KMOD),$(call nf_add,IPT_NAT6,CONFIG_IP6_NF_TARGET_NPT, $(P_V6)ip6t_NPT, ge 3.7.0),))
 
 # userland only
 $(eval $(if $(NF_KMOD),,$(call nf_add,IPT_NAT,CONFIG_NF_NAT, ipt_SNAT ipt_DNAT)))
+$(eval $(if $(NF_KMOD),,$(call nf_add,IPT_NAT6,CONFIG_IP6_NF_TARGET_NPT, ip6t_DNPT ip6t_SNPT)))
 
 $(eval $(call nf_add,IPT_NAT,CONFIG_IP_NF_TARGET_MASQUERADE, $(P_V4)ipt_MASQUERADE))
 $(eval $(call nf_add,IPT_NAT,CONFIG_IP_NF_TARGET_REDIRECT, $(P_XT)xt_REDIRECT, ge 3.7.0))
 $(eval $(call nf_add,IPT_NAT,CONFIG_IP_NF_TARGET_REDIRECT, $(P_V4)ipt_REDIRECT, lt 3.7.0))
+$(eval $(call nf_add,IPT_NAT6,CONFIG_IP_NF_TARGET_REDIRECT, $(P_V4)ip6t_REDIRECT, lt 3.8.0))
 
 
 # nat-extra
 
 $(eval $(call nf_add,IPT_NAT_EXTRA,CONFIG_IP_NF_TARGET_NETMAP, $(P_XT)xt_NETMAP, ge 3.7.0))
 $(eval $(call nf_add,IPT_NAT_EXTRA,CONFIG_IP_NF_TARGET_NETMAP, $(P_V4)ipt_NETMAP, lt 3.7.0))
+$(eval $(call nf_add,IPT_NAT6,CONFIG_IP_NF_TARGET_NETMAP, $(P_V6)ip6t_NETMAP, lt 3.8.0))
 
 
 # nathelper
@@ -283,6 +290,7 @@ IPT_BUILTIN += $(IPT_IPRANGE-y)
 IPT_BUILTIN += $(IPT_IPSEC-y)
 IPT_BUILTIN += $(IPT_IPV6-y) $(IPT_IPV6-m)
 IPT_BUILTIN += $(IPT_NAT-y)
+IPT_BUILTIN += $(IPT_NAT6-y)
 IPT_BUILTIN += $(IPT_NAT_EXTRA-y)
 IPT_BUILTIN += $(IPT_NATHELPER-y)
 IPT_BUILTIN += $(IPT_NATHELPER_EXTRA-y)
diff --git a/package/kernel/linux/modules/netfilter.mk b/package/kernel/linux/modules/netfilter.mk
index 496a9f9d4d..f657bad4c5 100644
--- a/package/kernel/linux/modules/netfilter.mk
+++ b/package/kernel/linux/modules/netfilter.mk
@@ -165,6 +165,23 @@ endef
 $(eval $(call KernelPackage,ipt-nat))
 
 
+define KernelPackage/ipt-nat6
+  TITLE:=IPv6 NAT targets
+  KCONFIG:=$(KCONFIG_IPT_NAT6)
+  FILES:=$(foreach mod,$(IPT_NAT6-m),$(LINUX_DIR)/net/$(mod).ko)
+  AUTOLOAD:=$(call AutoLoad,43,$(notdir $(IPT_NAT6-m)))
+  $(call AddDepends/ipt,+kmod-ipt-conntrack)
+  $(call AddDepends/ipt,+kmod-ipt-nat)
+  $(call AddDepends/ipt,+kmod-ip6tables)
+endef
+
+define KernelPackage/ipt-nat6/description
+ Netfilter (IPv6) kernel modules for NAT targets
+endef
+
+$(eval $(call KernelPackage,ipt-nat6))
+
+
 define KernelPackage/ipt-nat-extra
   TITLE:=Extra NAT targets
   KCONFIG:=$(KCONFIG_IPT_NAT_EXTRA)
@@ -394,7 +411,7 @@ define KernelPackage/ip6tables
   DEPENDS:=+kmod-ipv6 +kmod-ipt-core +kmod-ipt-conntrack
   KCONFIG:=$(KCONFIG_IPT_IPV6)
   FILES:=$(foreach mod,$(IPT_IPV6-m),$(LINUX_DIR)/net/$(mod).ko)
-  AUTOLOAD:=$(call AutoLoad,49,$(notdir $(IPT_IPV6-m)))
+  AUTOLOAD:=$(call AutoLoad,42,$(notdir $(IPT_IPV6-m)))
 endef
 
 define KernelPackage/ip6tables/description
diff --git a/package/network/utils/iptables/Makefile b/package/network/utils/iptables/Makefile
index 879d786e8f..35dda06d9c 100644
--- a/package/network/utils/iptables/Makefile
+++ b/package/network/utils/iptables/Makefile
@@ -300,6 +300,17 @@ $(call Package/iptables/Default)
   MENU:=1
 endef
 
+
+define Package/ip6tables-mod-nat
+$(call Package/iptables/Default)
+  DEPENDS:=ip6tables +kmod-ipt-nat6
+  TITLE:=IPv6 NAT extensions
+endef
+
+define Package/ip6tables-mod-nat/description
+iptables extensions for IPv6-NAT targets.
+endef
+
 define Package/libiptc
 $(call Package/iptables/Default)
   SECTION:=libs
@@ -447,6 +458,7 @@ $(eval $(call BuildPlugin,iptables-mod-tproxy,$(IPT_TPROXY-m)))
 $(eval $(call BuildPlugin,iptables-mod-tee,$(IPT_TEE-m)))
 $(eval $(call BuildPlugin,iptables-mod-u32,$(IPT_U32-m)))
 $(eval $(call BuildPackage,ip6tables))
+$(eval $(call BuildPlugin,ip6tables-mod-nat,$(IPT_NAT6-m)))
 $(eval $(call BuildPackage,libiptc))
 $(eval $(call BuildPackage,libip4tc))
 $(eval $(call BuildPackage,libip6tc))