#
# Copyright (C) 2017-2019 Chen Minqiang <ptpt52@gmail.com>
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#

include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk

PKG_NAME:=natflow
PKG_VERSION:=20241020

PKG_SOURCE_URL:=https://codeload.github.com/ptpt52/natflow/tar.gz/$(PKG_VERSION)?
PKG_HASH:=367873c342ae0b2f3a31f2965f4625bf6dd9102ced076a41eb982888b7cf724f
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz

PKG_MAINTAINER:=Chen Minqiang <ptpt52@gmail.com>
PKG_LICENSE:=GPL-2.0

include $(INCLUDE_DIR)/package.mk

define KernelPackage/natflow
  CATEGORY:=X
  SUBMENU:=Fast Forward Stacks
  TITLE:=natflow kernel driver
  KCONFIG:= \
	    CONFIG_NF_CONNTRACK_MARK=y \
	    CONFIG_NETFILTER_INGRESS=y
  FILES:=$(PKG_BUILD_DIR)/natflow.ko
  AUTOLOAD:=$(call AutoLoad,96,natflow)
  DEPENDS:= +kmod-ipt-conntrack +kmod-ipt-nat +kmod-ipt-ipset +kmod-br-netfilter
endef

define KernelPackage/natflow/description
  fast nat forward kmod
endef

include $(INCLUDE_DIR)/kernel-defaults.mk

ifeq (,$(findstring clang,$(KERNEL_CC)))
EXTRA_CFLAGS += -Wno-stringop-overread
endif

EXTRA_CFLAGS += -DCONFIG_NATFLOW_PATH -DCONFIG_NATFLOW_URLLOGGER -DNATFLOW_VERSION=\\\"$(PKG_VERSION)-$(shell echo $(PKG_HASH) | head -c7)\\\"
ifneq ($(CONFIG_TARGET_mediatek_mt7622),)
EXTRA_CFLAGS += -DCONFIG_HWNAT_EXTDEV_USE_VLAN_HASH
endif

define Build/Compile/natflow
	+$(MAKE) $(PKG_JOBS) -C "$(LINUX_DIR)" \
		EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
		$(KERNEL_MAKE_FLAGS) \
		ARCH="$(LINUX_KARCH)" \
		CROSS_COMPILE="$(KERNEL_CROSS)" \
		M="$(PKG_BUILD_DIR)" \
		$(if $(CONFIG_KERNEL_DEBUG_INFO),,NO_DEBUG=1) \
		modules
endef

define Build/Compile
	$(call Build/Compile/natflow)
endef

define Package/natflow
  SECTION:=net
  CATEGORY:=Network
  TITLE:=Natflow init script
  DEPENDS:=+ethtool +kmod-natflow
endef

define Package/natflow/install
	$(INSTALL_DIR) $(1)/etc/uci-defaults
	$(INSTALL_BIN) ./files/70-luci-firewall-natflow $(1)/etc/uci-defaults
	$(INSTALL_DIR) $(1)/etc/init.d
	$(INSTALL_BIN) ./files/natflow.init $(1)/etc/init.d/natflow
	$(INSTALL_DIR) $(1)/etc/hotplug.d/iface
	$(INSTALL_DATA) ./files/21-natflow.hotplug $(1)/etc/hotplug.d/iface/21-natflow
endef

$(eval $(call KernelPackage,natflow))
$(eval $(call BuildPackage,natflow))