kernel: netfilter: split out iptable_raw into a separate package

This will avoid loading it in the default configuration, which reduces
image size a bit, and (more importantly) improves performance by
avoiding some unnecessary netfilter hooks

Signed-off-by: Felix Fietkau <[email protected]>

include/netfilter.mk

@@ -71,7 +71,6 @@ $(eval $(if $(NF_KMOD),$(call nf_add,NF_CONNTRACK,CONFIG_NF_DEFRAG_IPV4, $(P_V4)
 $(eval $(if $(NF_KMOD),$(call nf_add,NF_CONNTRACK,CONFIG_NF_CONNTRACK_IPV4, $(P_V4)nf_conntrack_ipv4),))
 
 $(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_CT, $(P_XT)xt_CT))
 $(eval $(call nf_add,IPT_CONNTRACK,CONFIG_NETFILTER_XT_MATCH_CONNTRACK, $(P_XT)xt_conntrack))
 
@@ -150,7 +149,6 @@ $(eval $(if $(NF_KMOD),$(call nf_add,NF_CONNTRACK6,CONFIG_NF_CONNTRACK_IPV6, $(P
 $(eval $(if $(NF_KMOD),$(call nf_add,IPT_IPV6,CONFIG_IP6_NF_FILTER, $(P_V6)ip6table_filter),))
 $(eval $(if $(NF_KMOD),$(call nf_add,IPT_IPV6,CONFIG_IP6_NF_MANGLE, $(P_V6)ip6table_mangle),))
 $(eval $(if $(NF_KMOD),$(call nf_add,IPT_IPV6,CONFIG_IP6_NF_QUEUE, $(P_V6)ip6_queue),))
-$(eval $(if $(NF_KMOD),$(call nf_add,IPT_IPV6,CONFIG_IP6_NF_RAW, $(P_V6)ip6table_raw),))
 $(eval $(if $(NF_KMOD),$(call nf_add,IPT_IPV6,CONFIG_NF_LOG_IPV6, $(P_V6)nf_log_ipv6),))
 
 $(eval $(if $(NF_KMOD),,$(call nf_add,IPT_IPV6,CONFIG_IP6_NF_IPTABLES, ip6t_icmp6)))

package/kernel/linux/modules/netfilter.mk

@@ -289,6 +289,28 @@ endef
 $(eval $(call KernelPackage,ipt-nat))
 
 
+define KernelPackage/ipt-raw
+  TITLE:=Netfilter IPv4 raw table support
+  KCONFIG:=CONFIG_IP_NF_RAW
+  FILES:=$(LINUX_DIR)/net/ipv4/netfilter/iptable_raw.ko
+  AUTOLOAD:=$(call AutoProbe,iptable_raw)
+  $(call AddDepends/ipt)
+endef
+
+$(eval $(call KernelPackage,ipt-raw))
+
+
+define KernelPackage/ipt-raw6
+  TITLE:=Netfilter IPv6 raw table support
+  KCONFIG:=CONFIG_IP6_NF_RAW
+  FILES:=$(LINUX_DIR)/net/ipv6/netfilter/ip6table_raw.ko
+  AUTOLOAD:=$(call AutoProbe,ip6table_raw)
+  $(call AddDepends/ipt,+kmod-ip6tables)
+endef
+
+$(eval $(call KernelPackage,ipt-raw6))
+
+
 define KernelPackage/ipt-nat6
   TITLE:=IPv6 NAT targets
   KCONFIG:=$(KCONFIG_IPT_NAT6)