iptables: NFLOG and NFQUEUE targets' full support

NFLOG and NFQUEUE targets' full support for iptables.

Includes all needed kernel modules (Xtables's and Netlink's)
 and userspace libraries.
All added kernel modules can be individually disabled,
 all other new libraries get their own individual packages.

Reported-by: Fabian Hugelshofer <hugelshofer2006@gmx.ch>
Reported-by: Rainer Poisel <rainer.poisel@fhstp.ac.at>
Reported-by: Derek LaHousse <dlahouss@mtu.edu>
Signed-off-by: Guillaume Déflache <guillaume.deflache@ibwag.com>

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42030 3c298f89-4303-0410-b956-a3cf2f4a3e73

include/netfilter.mk

@@ -225,6 +225,16 @@ $(eval $(call nf_add,IPT_QUEUE,CONFIG_IP_NF_QUEUE, $(P_V4)ip_queue, lt 3.5.0))
 $(eval $(call nf_add,IPT_ULOG,CONFIG_IP_NF_TARGET_ULOG, $(P_V4)ipt_ULOG))
 
 
+# nflog
+
+$(eval $(call nf_add,IPT_NFLOG,CONFIG_NETFILTER_XT_TARGET_NFLOG, $(P_XT)xt_NFLOG))
+
+
+# nfqueue
+
+$(eval $(call nf_add,IPT_NFQUEUE,CONFIG_NETFILTER_XT_TARGET_NFQUEUE, $(P_XT)xt_NFQUEUE))
+
+
 # debugging
 
 $(eval $(call nf_add,IPT_DEBUG,CONFIG_NETFILTER_XT_TARGET_TRACE, $(P_XT)xt_TRACE))
@@ -245,6 +255,19 @@ $(eval $(call nf_add,IPT_TEE,CONFIG_NETFILTER_XT_TARGET_TEE, $(P_XT)xt_TEE))
 
 $(eval $(call nf_add,IPT_U32,CONFIG_NETFILTER_XT_MATCH_U32, $(P_XT)xt_u32))
 
+
+# netlink
+
+$(eval $(call nf_add,NFNETLINK,CONFIG_NETFILTER_NETLINK, $(P_XT)nfnetlink))
+
+# nflog
+
+$(eval $(call nf_add,NFNETLINK_LOG,CONFIG_NETFILTER_NETLINK_LOG, $(P_XT)nfnetlink_log))
+
+# nfqueue
+
+$(eval $(call nf_add,NFNETLINK_QUEUE,CONFIG_NETFILTER_NETLINK_QUEUE, $(P_XT)nfnetlink_queue))
+
 #
 # ebtables
 #
@@ -279,6 +302,7 @@ $(eval $(call nf_add,EBTABLES_IP4,CONFIG_BRIDGE_EBT_SNAT, $(P_EBT)ebt_snat))
 $(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, $(P_EBT)ebt_nflog))
+$(eval $(call nf_add,EBTABLES_WATCHERS,CONFIG_BRIDGE_EBT_NFQUEUE, $(P_EBT)ebt_nfqueue))
 
 
 # userland only
@@ -299,6 +323,9 @@ IPT_BUILTIN += $(IPT_NATHELPER_EXTRA-y)
 IPT_BUILTIN += $(IPT_ULOG-y)
 IPT_BUILTIN += $(IPT_DEBUG-y)
 IPT_BUILTIN += $(IPT_TPROXY-y)
+IPT_BUILTIN += $(NFNETLINK-y)
+IPT_BUILTIN += $(NFNETLINK_LOG-y)
+IPT_BUILTIN += $(NFNETLINK_QUEUE-y)
 IPT_BUILTIN += $(EBTABLES-y)
 IPT_BUILTIN += $(EBTABLES_IP4-y)
 IPT_BUILTIN += $(EBTABLES_IP6-y)

package/kernel/linux/modules/netfilter.mk

@@ -278,6 +278,40 @@ endef
 $(eval $(call KernelPackage,ipt-ulog))
 
 
+define KernelPackage/ipt-nflog
+  TITLE:=Module for user-space packet logging
+  KCONFIG:=$(KCONFIG_IPT_NFLOG)
+  FILES:=$(foreach mod,$(IPT_NFLOG-m),$(LINUX_DIR)/net/$(mod).ko)
+  AUTOLOAD:=$(call AutoProbe,$(notdir $(IPT_NFLOG-m)))
+  $(call AddDepends/ipt,+kmod-nfnetlink-log)
+endef
+
+define KernelPackage/ipt-nflog/description
+ Netfilter module for user-space packet logging
+ Includes:
+ - NFLOG
+endef
+
+$(eval $(call KernelPackage,ipt-nflog))
+
+
+define KernelPackage/ipt-nfqueue
+  TITLE:=Module for user-space packet queuing
+  KCONFIG:=$(KCONFIG_IPT_NFQUEUE)
+  FILES:=$(foreach mod,$(IPT_NFQUEUE-m),$(LINUX_DIR)/net/$(mod).ko)
+  AUTOLOAD:=$(call AutoProbe,$(notdir $(IPT_NFQUEUE-m)))
+  $(call AddDepends/ipt,+kmod-nfnetlink-queue)
+endef
+
+define KernelPackage/ipt-nfqueue/description
+ Netfilter module for user-space packet queuing
+ Includes:
+ - NFQUEUE
+endef
+
+$(eval $(call KernelPackage,ipt-nfqueue))
+
+
 define KernelPackage/ipt-debug
   TITLE:=Module for debugging/development
   KCONFIG:=$(KCONFIG_IPT_DEBUG)
@@ -530,10 +564,10 @@ $(eval $(call KernelPackage,ebtables-watchers))
 define KernelPackage/nfnetlink
   SUBMENU:=$(NF_MENU)
   TITLE:=Netlink-based userspace interface
-  DEPENDS:=+kmod-ipt-core
+  FILES:=$(foreach mod,$(NFNETLINK-m),$(LINUX_DIR)/net/$(mod).ko)
-  FILES:=$(LINUX_DIR)/net/netfilter/nfnetlink.ko
+  KCONFIG:=$(KCONFIG_NFNETLINK)
-  KCONFIG:=CONFIG_NETFILTER_NETLINK
+  AUTOLOAD:=$(call AutoProbe,$(notdir $(NFNETLINK-m)))
-  AUTOLOAD:=$(call AutoProbe,nfnetlink)
+  $(call AddDepends/ipt)
 endef
 
 define KernelPackage/nfnetlink/description
@@ -551,14 +585,16 @@ endef
 
 define KernelPackage/nfnetlink-log
   TITLE:=Netfilter LOG over NFNETLINK interface
-  FILES:=$(LINUX_DIR)/net/netfilter/nfnetlink_log.ko
+  FILES:=$(foreach mod,$(NFNETLINK_LOG-m),$(LINUX_DIR)/net/$(mod).ko)
-  KCONFIG:=CONFIG_NETFILTER_NETLINK_LOG
+  KCONFIG:=$(KCONFIG_NFNETLINK_LOG)
-  AUTOLOAD:=$(call AutoProbe,nfnetlink_log)
+  AUTOLOAD:=$(call AutoProbe,$(notdir $(NFNETLINK_LOG-m)))
   $(call AddDepends/nfnetlink)
 endef
 
 define KernelPackage/nfnetlink-log/description
  Kernel modules support for logging packets via NFNETLINK
+ Includes:
+ - NFLOG
 endef
 
 $(eval $(call KernelPackage,nfnetlink-log))
@@ -566,14 +602,16 @@ $(eval $(call KernelPackage,nfnetlink-log))
 
 define KernelPackage/nfnetlink-queue
   TITLE:=Netfilter QUEUE over NFNETLINK interface
-  FILES:=$(LINUX_DIR)/net/netfilter/nfnetlink_queue.ko
+  FILES:=$(foreach mod,$(NFNETLINK_QUEUE-m),$(LINUX_DIR)/net/$(mod).ko)
-  KCONFIG:=CONFIG_NETFILTER_NETLINK_QUEUE
+  KCONFIG:=$(KCONFIG_NFNETLINK_QUEUE)
-  AUTOLOAD:=$(call AutoProbe,nfnetlink_queue)
+  AUTOLOAD:=$(call AutoProbe,$(notdir $(NFNETLINK_QUEUE-m)))
   $(call AddDepends/nfnetlink)
 endef
 
 define KernelPackage/nfnetlink-queue/description
  Kernel modules support for queueing packets via NFNETLINK
+ Includes:
+ - NFQUEUE
 endef
 
 $(eval $(call KernelPackage,nfnetlink-queue))

package/network/utils/iptables/Makefile

@@ -194,6 +194,32 @@ iptables extensions for user-space packet logging.
 
 endef
 
+define Package/iptables-mod-nflog
+$(call Package/iptables/Module, +kmod-nfnetlink-log)
+  TITLE:=Netfilter NFLOG target
+endef
+
+define Package/iptables-mod-nflog/description
+ iptables extension for user-space logging via NFNETLINK.
+
+ Includes:
+  - libxt_NFLOG
+
+endef
+
+define Package/iptables-mod-nfqueue
+$(call Package/iptables/Module, +kmod-nfnetlink-queue)
+  TITLE:=Netfilter NFQUEUE target
+endef
+
+define Package/iptables-mod-nfqueue/description
+ iptables extension for user-space queuing via NFNETLINK.
+
+ Includes:
+  - libxt_NFQUEUE
+
+endef
+
 define Package/iptables-mod-hashlimit
 $(call Package/iptables/Module, +kmod-ipt-hashlimit)
   TITLE:=hashlimit matching
@@ -469,6 +495,8 @@ $(eval $(call BuildPlugin,iptables-mod-led,$(IPT_LED-m)))
 $(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 $(call BuildPlugin,iptables-mod-nflog,$(IPT_NFLOG-m)))
+$(eval $(call BuildPlugin,iptables-mod-nfqueue,$(IPT_NFQUEUE-m)))
 $(eval $(call BuildPackage,ip6tables))
 $(eval $(call BuildPlugin,ip6tables-extra,$(IPT_IPV6_EXTRA-m)))
 $(eval $(call BuildPlugin,ip6tables-mod-nat,$(IPT_NAT6-m)))