fastd: make L2TP support a config option instead of a variant

We enable the option by default, but do not depend on the kernel modules
required for L2TP offloading to avoid wasting space when the feature is
not needed. To use offloading, kmod-l2tp-eth must be installed.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>

net/fastd/Config.in

@@ -1,4 +1,4 @@
-if PACKAGE_fastd || PACKAGE_fastd-l2tp
+if PACKAGE_fastd
 
 menu "Configuration"
 
@@ -76,6 +76,10 @@ config FASTD_WITH_STATUS_SOCKET
 	bool "Include support for status sockets"
 	default y
 
+config FASTD_WITH_OFFLOAD_L2TP
+	bool "Enable L2TP offloading"
+	default y
+
 endmenu
 
 endif

net/fastd/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=fastd
 PKG_VERSION:=22
-PKG_RELEASE=2
+PKG_RELEASE=3
 
 PKG_MAINTAINER:=Matthias Schiffer <mschiffer@universe-factory.net>
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
@@ -39,7 +39,8 @@ PKG_CONFIG_DEPENDS:=\
 	CONFIG_FASTD_WITH_CMDLINE_OPERATION \
 	CONFIG_FASTD_WITH_CMDLINE_COMMANDS \
 	CONFIG_FASTD_WITH_DYNAMIC_PEERS \
-	CONFIG_FASTD_WITH_STATUS_SOCKET
+	CONFIG_FASTD_WITH_STATUS_SOCKET \
+	CONFIG_FASTD_WITH_OFFLOAD_L2TP
 
 
 PKG_BUILD_DEPENDS:=meson/host nacl
@@ -55,14 +56,6 @@ define Package/fastd
   TITLE:=Fast and Secure Tunneling Daemon
   URL:=https://github.com/NeoRaider/fastd/
   SUBMENU:=VPN
-  VARIANT:=default
-endef
-define Package/fastd-l2tp
-$(Package/fastd)
-  DEPENDS+=+kmod-l2tp +kmod-l2tp-eth
-  TITLE+=(L2TP kernel offloading)
-  VARIANT:=l2tp
-  PROVIDES:=fastd
 endef
 
 define Package/fastd/config
@@ -93,32 +86,20 @@ MESON_ARGS += \
 	-Dmethod_null=$(call feature,ENABLE_METHOD_NULL) \
 	-Dmethod_null_l2tp=$(call feature,ENABLE_METHOD_NULL_L2TP) \
 	-Dstatus_socket=$(call feature,WITH_STATUS_SOCKET) \
-	-Doffload_l2tp=disabled \
+	-Doffload_l2tp=$(call feature,WITH_OFFLOAD_L2TP) \
 	-Dlibmnl_builtin=true \
 	-Dsystemd=disabled \
 	-Duse_nacl=true \
 	-Db_lto=true \
 	-Dprefix=/usr
 
-ifeq ($(BUILD_VARIANT),l2tp)
-  MESON_ARGS += \
-	-Dmethod_null_l2tp=enabled \
-	-Doffload_l2tp=enabled
-endif
-
 define Package/fastd/description
 Fast and secure tunneling daemon, which is optimized on small code size and few dependencies
 endef
-define Package/fastd-l2tp/description
-$(Package/fastd/description)
-
-This variant enables L2TP kernel offloadig support.
-endef
 
 define Package/fastd/conffiles
 /etc/config/fastd
 endef
-Package/fastd-l2tp/conffiles = $(Package/fastd/conffiles)
 
 define Package/fastd/install
 	$(INSTALL_DIR) $(1)/usr/bin
@@ -132,7 +113,5 @@ define Package/fastd/install
 	$(INSTALL_DIR) $(1)/lib/upgrade/keep.d
 	$(INSTALL_DATA) files/fastd.upgrade $(1)/lib/upgrade/keep.d/fastd
 endef
-Package/fastd-l2tp/install = $(Package/fastd/install)
 
 $(eval $(call BuildPackage,fastd))
-$(eval $(call BuildPackage,fastd-l2tp))