Add switch to enable/disable ipv6 support for sfe and fast-classifie…

…r package (coolsnowwolf#5645)

package/lean/fast-classifier/Makefile

@@ -49,7 +49,7 @@ Example user space program that communicates with fast
 classifier kernel module
 endef
 
-SFE_MAKE_OPTS:=SFE_SUPPORT_IPV6=y
+SFE_MAKE_OPTS:=SFE_SUPPORT_IPV6=n
 
 define Build/Compile/kmod
 	+$(MAKE) $(PKG_JOBS) -C "$(LINUX_DIR)" $(strip $(SFE_MAKE_OPTS)) \

package/lean/fast-classifier/src/fast-classifier.c

@@ -346,11 +346,13 @@ static bool fast_classifier_find_dev_and_mac_addr(struct sk_buff *skb, sfe_ip_ad
 
 		dst = (struct dst_entry *)rt;
 	} else {
+#ifdef SFE_SUPPORT_IPV6
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 17, 0))
 		rt6 = rt6_lookup(&init_net, (struct in6_addr *)addr->ip6, 0, 0, NULL, 0);
 #else
 		rt6 = rt6_lookup(&init_net, (struct in6_addr *)addr->ip6, 0, 0, 0);
 #endif /*KERNEL_VERSION(4, 17, 0)*/
+#endif
 		if (!rt6) {
 			goto ret_fail;
 		}

package/lean/shortcut-fe/Makefile

@@ -19,13 +19,18 @@ PKG_RELEASE:=2
 
 include $(INCLUDE_DIR)/package.mk
 
+SFE_SUPPORT_IPV6=n
 define KernelPackage/shortcut-fe
   SECTION:=kernel
   CATEGORY:=Kernel modules
   SUBMENU:=Network Support
   DEPENDS:=
   TITLE:=Kernel driver for SFE
+ifeq (${SFE_SUPPORT_IPV6},y)
   FILES:=$(PKG_BUILD_DIR)/shortcut-fe.ko $(PKG_BUILD_DIR)/shortcut-fe-ipv6.ko
+else
+  FILES:=$(PKG_BUILD_DIR)/shortcut-fe.ko
+endif
   KCONFIG:=CONFIG_NF_CONNTRACK_EVENTS=y \
 	   CONFIG_NF_CONNTRACK_TIMEOUT=y \
 	   CONFIG_SHORTCUT_FE=y \
@@ -58,15 +63,23 @@ define KernelPackage/shortcut-fe-cm/Description
 Simple connection manager for the Shortcut forwarding engine.
 endef
 
-EXTRA_CFLAGS+=-DSFE_SUPPORT_IPV6
+
+ifeq (${SFE_SUPPORT_IPV6},y)
+	EXTRA_CFLAGS+=-DSFE_SUPPORT_IPV6
+        ISV6=SFE_SUPPORT_IPV6=1
+else
+	ISV6=SFE_SUPPORT_IPV6=""
+endif
+
+
 
 define Build/Compile
 	+$(MAKE) $(PKG_JOBS) -C "$(LINUX_DIR)" \
 		$(KERNEL_MAKE_FLAGS) \
 		$(PKG_MAKE_FLAGS) \
 		M="$(PKG_BUILD_DIR)" \
 		EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
-		SFE_SUPPORT_IPV6=1 \
+		${ISV6}	\
 		modules
 endef