Add OpenVPN DCO

ovpn-dco/Makefile

@@ -0,0 +1,63 @@
+#
+# Copyright (C) 2021 Jianhui Zhao <zhaojh329@gmail.com>
+# Copyright (C) 2023 Yannick Chabanois (Ycarus) <contact@openmptcprouter.com> for OpenMPTCProuter
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=ovpn-dco
+PKG_VERSION:=0.2.20231127
+PKG_RELEASE:=1
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://github.com/OpenVPN/ovpn-dco.git
+PKG_SOURCE_VERSION:=c24380cdb8f5eef5a04059bbe82ad4ba4d3616c3
+
+PKG_MAINTAINER:=Yannick Chabanois <contact@openmptcprouter.com>
+PKG_LICENSE:=GPL-2.0-only
+
+
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/ovpn-dco-v2
+  SUBMENU:=Network Support
+  TITLE:=OpenVPN data channel offload
+  DEPENDS:=+kmod-crypto-aead +kmod-udptunnel4 +IPV6:kmod-udptunnel6
+  FILES:=$(PKG_BUILD_DIR)/drivers/net/ovpn-dco/ovpn-dco-v2.ko
+  AUTOLOAD:=$(call AutoLoad,30,ovpn-dco-v2)
+endef
+
+define KernelPackage/ovpn-dco-v2/description
+  This module enhances the performance of the OpenVPN userspace software
+  by offloading the data channel processing to kernelspace.
+endef
+
+NOSTDINC_FLAGS += \
+	$(KERNEL_NOSTDINC_FLAGS) \
+	-I$(PKG_BUILD_DIR)/include \
+	-include $(PKG_BUILD_DIR)/linux-compat.h \
+	-I$(PKG_BUILD_DIR)/compat-include/
+
+EXTRA_KCONFIG:= \
+	CONFIG_OVPN_DCO_V2=m
+
+PKG_EXTMOD_SUBDIRS = drivers/net/ovpn-dco
+
+MAKE_OPTS:= \
+	$(KERNEL_MAKE_FLAGS) \
+	M="$(PKG_BUILD_DIR)/drivers/net/ovpn-dco" \
+	NOSTDINC_FLAGS="$(NOSTDINC_FLAGS)" \
+	$(EXTRA_KCONFIG)
+
+define Build/Compile
+	$(MAKE) -C "$(LINUX_DIR)" \
+		$(MAKE_OPTS) \
+		modules
+endef
+
+$(eval $(call KernelPackage,ovpn-dco-v2))