From 42a3c6465a230a4e03f2a185f4db5ac57b89f673 Mon Sep 17 00:00:00 2001
From: Rosy Song <rosysong@rosinson.com>
Date: Sat, 4 Aug 2018 10:25:54 +0800
Subject: [PATCH] netfilter: separate IPv6 relevant kernel modules from IPv4

Signed-off-by: Rosy Song <rosysong@rosinson.com>
---
 include/netfilter.mk                      | 14 +++--
 package/kernel/linux/modules/netfilter.mk | 63 +++++++++++++++++++++--
 2 files changed, 67 insertions(+), 10 deletions(-)

diff --git a/include/netfilter.mk b/include/netfilter.mk
index 510aa183ca..e05bd4ee60 100644
--- a/include/netfilter.mk
+++ b/include/netfilter.mk
@@ -115,7 +115,7 @@ $(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_HASHLIMIT,CONFIG_NETFILTER_XT_MATCH_HASHLIMIT, $(P_XT)xt_hashlimit))
 $(eval $(call nf_add,IPT_RPFILTER,CONFIG_IP_NF_MATCH_RPFILTER, $(P_V4)ipt_rpfilter))
-$(eval $(call nf_add,IPT_RPFILTER,CONFIG_IP6_NF_MATCH_RPFILTER, $(P_V6)ip6t_rpfilter))
+$(eval $(call nf_add,IP6T_RPFILTER,CONFIG_IP6_NF_MATCH_RPFILTER, $(P_V6)ip6t_rpfilter))
 $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_LENGTH, $(P_XT)xt_length))
 $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_STATISTIC, $(P_XT)xt_statistic))
 $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_TCPMSS, $(P_XT)xt_tcpmss))
@@ -267,7 +267,9 @@ $(eval $(call nf_add,IPT_LED,CONFIG_NETFILTER_XT_TARGET_LED, $(P_XT)xt_LED))
 
 $(eval $(call nf_add,IPT_TEE,CONFIG_NETFILTER_XT_TARGET_TEE, $(P_XT)xt_TEE))
 $(eval $(if $(NF_KMOD),$(call nf_add,IPT_TEE,CONFIG_NF_DUP_IPV4, $(P_V4)nf_dup_ipv4, ge 4.3),))
-$(eval $(if $(NF_KMOD),$(call nf_add,IPT_TEE,CONFIG_NF_DUP_IPV6, $(P_V6)nf_dup_ipv6, ge 4.3),))
+
+# tee (IPv6)
+$(eval $(if $(NF_KMOD),$(call nf_add,IP6T_TEE,CONFIG_NF_DUP_IPV6, $(P_V6)nf_dup_ipv6, ge 4.3),))
 
 # u32
 
@@ -340,15 +342,17 @@ $(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_HASH, $(P_XT)nft_hash,
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_COUNTER, $(P_XT)nft_counter),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_LOG, $(P_XT)nft_log),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_LIMIT, $(P_XT)nft_limit),))
-$(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_REJECT, $(P_XT)nft_reject $(P_V4)nft_reject_ipv4 $(P_V6)nft_reject_ipv6),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_REJECT_INET, $(P_XT)nft_reject_inet),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NF_TABLES_IPV4, $(P_V4)nf_tables_ipv4),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_CHAIN_ROUTE_IPV4, $(P_V4)nft_chain_route_ipv4),))
-$(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NF_TABLES_IPV6, $(P_V6)nf_tables_ipv6),))
-$(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_CHAIN_ROUTE_IPV6, $(P_V6)nft_chain_route_ipv6),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_REDIR, $(P_XT)nft_redir, ge 3.19.0),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE,CONFIG_NFT_QUOTA, $(P_XT)nft_quota, ge 4.9.0),))
 
+# nftables (IPv6)
+$(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE6,CONFIG_NFT_REJECT, $(P_XT)nft_reject $(P_V4)nft_reject_ipv4 $(P_V6)nft_reject_ipv6),))
+$(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE6,CONFIG_NF_TABLES_IPV6, $(P_V6)nf_tables_ipv6),))
+$(eval $(if $(NF_KMOD),$(call nf_add,NFT_CORE6,CONFIG_NFT_CHAIN_ROUTE_IPV6, $(P_V6)nft_chain_route_ipv6),))
+
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_ARP,CONFIG_NF_TABLES_ARP, $(P_V4)nf_tables_arp),))
 
 $(eval $(if $(NF_KMOD),$(call nf_add,NFT_BRIDGE,CONFIG_NF_TABLES_BRIDGE, $(P_EBT)nf_tables_bridge),))
diff --git a/package/kernel/linux/modules/netfilter.mk b/package/kernel/linux/modules/netfilter.mk
index 6d751cc658..11b482454f 100644
--- a/package/kernel/linux/modules/netfilter.mk
+++ b/package/kernel/linux/modules/netfilter.mk
@@ -586,6 +586,19 @@ endef
 
 $(eval $(call KernelPackage,ipt-tee))
 
+define KernelPackage/ip6t-tee
+  TITLE:=TEE support (IPv6)
+  DEPENDS:=+kmod-ipt-tee
+  FILES:= $(foreach mod,$(IP6T_TEE-m),$(LINUX_DIR)/net/$(mod).ko)
+  AUTOLOAD:=$(call AutoProbe,$(notdir nf_tee $(IP6T_TEE-m)))
+  $(call AddDepends/ipt)
+endef
+
+define KernelPackage/ip6t-tee/description
+  Kernel modules for TEE (IPv6)
+endef
+
+$(eval $(call KernelPackage,ip6t-tee))
 
 define KernelPackage/ipt-u32
   TITLE:=U32 support
@@ -951,10 +964,8 @@ define KernelPackage/ipt-rpfilter
   TITLE:=Netfilter rpfilter match
   DEPENDS:=+kmod-ipt-core
   KCONFIG:=$(KCONFIG_IPT_RPFILTER)
-  FILES:=$(realpath \
-	$(LINUX_DIR)/net/ipv4/netfilter/ipt_rpfilter.ko \
-	$(LINUX_DIR)/net/ipv6/netfilter/ip6t_rpfilter.ko)
-  AUTOLOAD:=$(call AutoProbe,ipt_rpfilter ip6t_rpfilter)
+  FILES:=$(realpath $(LINUX_DIR)/net/ipv4/netfilter/ipt_rpfilter.ko)
+  AUTOLOAD:=$(call AutoProbe,ipt_rpfilter)
   $(call KernelPackage/ipt)
 endef
 
@@ -965,10 +976,27 @@ endef
 $(eval $(call KernelPackage,ipt-rpfilter))
 
 
+define KernelPackage/ip6t-rpfilter
+  SUBMENU:=$(NF_MENU)
+  TITLE:=Netfilter rpfilter match (IPv6)
+  DEPENDS:=+kmod-ipt-core
+  KCONFIG:=$(KCONFIG_IP6T_RPFILTER)
+  FILES:=$(realpath $(LINUX_DIR)/net/ipv6/netfilter/ip6t_rpfilter.ko)
+  AUTOLOAD:=$(call AutoProbe,ip6t_rpfilter)
+  $(call KernelPackage/ipt)
+endef
+
+define KernelPackage/ip6t-rpfilter/description
+ Kernel modules support for the Netfilter rpfilter match (IPv6)
+endef
+
+$(eval $(call KernelPackage,ip6t-rpfilter))
+
+
 define KernelPackage/nft-core
   SUBMENU:=$(NF_MENU)
   TITLE:=Netfilter nf_tables support
-  DEPENDS:=+kmod-nfnetlink +kmod-nf-reject +kmod-nf-reject6 +kmod-nf-conntrack6
+  DEPENDS:=+kmod-nfnetlink +kmod-nf-reject +kmod-nf-conntrack
   FILES:=$(foreach mod,$(NFT_CORE-m),$(LINUX_DIR)/net/$(mod).ko)
   AUTOLOAD:=$(call AutoProbe,$(notdir $(NFT_CORE-m)))
   KCONFIG:= \
@@ -983,6 +1011,20 @@ endef
 
 $(eval $(call KernelPackage,nft-core))
 
+define KernelPackage/nft-core6
+  SUBMENU:=$(NF_MENU)
+  TITLE:=Netfilter nf_tables support (IPv6)
+  DEPENDS:=+kmod-nft-core +kmod-nf-reject6 +kmod-nf-conntrack6
+  FILES:=$(foreach mod,$(NFT_CORE6-m),$(LINUX_DIR)/net/$(mod).ko)
+  AUTOLOAD:=$(call AutoProbe,$(notdir $(NFT_CORE6-m)))
+  KCONFIG:= $(KCONFIG_NFT_CORE6)
+endef
+
+define KernelPackage/nft-core6/description
+ Kernel module support for nftables (IPv6)
+endef
+
+$(eval $(call KernelPackage,nft-core6))
 
 define KernelPackage/nft-arp
   SUBMENU:=$(NF_MENU)
@@ -1042,6 +1084,17 @@ endef
 $(eval $(call KernelPackage,nft-offload))
 
 
+define KernelPackage/nft-offload6
+  SUBMENU:=$(NF_MENU)
+  TITLE:=Netfilter nf_tables routing/NAT offload support (IPv6)
+  DEPENDS:=+kmod-nft-offload
+  KCONFIG:=CONFIG_NF_FLOW_TABLE_IPV6
+  FILES:=$(LINUX_DIR)/net/ipv6/netfilter/nf_flow_table_ipv6.ko
+  AUTOLOAD:=$(call AutoProbe,nf_flow_table_ipv6)
+endef
+
+$(eval $(call KernelPackage,nft-offload6))
+
 define KernelPackage/nft-nat6
   SUBMENU:=$(NF_MENU)
   TITLE:=Netfilter nf_tables IPv6-NAT support
-- 
2.30.2