include $(TOPDIR)/rules.mk

PKG_NAME:=xdp-tools
PKG_RELEASE:=1
PKG_VERSION:=1.2.9
PKG_HASH:=159ed8d3c8195d812ec3cde83bd736245a72743af372998320d39c2ba69ab142

PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=https://codeload.github.com/xdp-project/xdp-tools/tar.gz/v$(PKG_VERSION)?
PKG_ABI_VERSION:=$(call abi_version_str,$(PKG_VERSION))

PKG_MAINTAINER:=Daniel Golle <daniel@makrotopia.org>

PKG_BUILD_DEPENDS:=bpf-headers
PKG_FLAGS:=nonshared

include $(INCLUDE_DIR)/package.mk
include $(INCLUDE_DIR)/bpf.mk
include $(INCLUDE_DIR)/nls.mk

PKG_BUILD_PARALLEL:=1
PKG_INSTALL:=1

define Package/libxdp
  SECTION:=libs
  CATEGORY:=Libraries
  TITLE:=libxdp - Library for use with XDP
  LICENSE:=LGPL-2.1 OR BSD-2-Clause
  ABI_VERSION:=$(PKG_ABI_VERSION)
  URL:=https://github.com/xdp-project/xdp-tools/
  DEPENDS:=+libbpf $(BPF_DEPENDS)
endef

define Package/libxdp/description
libxdp - library for attaching XDP programs and using AF_XDP sockets
endef

define Package/xdp-tools/Default
  SECTION:=net
  CATEGORY:=Network
  LICENSE:=GPL-2.0-only
  URL:=https://github.com/xdp-project/xdp-tools/
  DEPENDS:=+libxdp
endef

define Package/xdp-filter
$(call Package/xdp-tools/Default)
  TITLE:=xdp-filter - a simple XDP-powered packet filter
endef

define Package/xdp-filter/description
xdp-filter is a packet filtering utility powered by XDP. It is deliberately
simple and so does not have the same matching capabilities as, e.g.,
netfilter. Instead, thanks to XDP, it can achieve very high drop rates:
tens of millions of packets per second on a single CPU core.
endef


define Package/xdp-loader
$(call Package/xdp-tools/Default)
  TITLE:=xdp-loader - an XDP program loader
endef

define Package/xdp-loader/description
xdp-loader is a simple loader for XDP programs with support for attaching
multiple programs to the same interface. To achieve this it exposes the same
load and unload semantics exposed by the libxdp library.
endef

define Package/xdpdump
$(call Package/xdp-tools/Default)
  TITLE:=xdpdump - tool for capturing packets at the XDP layer
  DEPENDS+=+libpcap
endef

define Package/xdpdump/description
xdpdump - a simple tcpdump like tool for capturing packets at the XDP layer
endef

TARGET_LDFLAGS += $(INTL_LDFLAGS)

CONFIGURE_VARS += \
	FORCE_SYSTEM_LIBBPF=1 \
	CC="$(TARGET_CC)" \
	CFLAGS="$(TARGET_CFLAGS)" \
	LDFLAGS="$(TARGET_LDFLAGS)" \
	CLANG="$(CLANG)" \
	BPF_TARGET="$(BPF_TARGET)" \
	LLC="$(LLVM_LLC)"

MAKE_VARS += \
	PREFIX=/usr \
	RUNDIR=/tmp/run

define Build/Configure
	$(call Build/Configure/Default)
	echo "BPF_CFLAGS += -I$(BPF_HEADERS_DIR)/tools/lib -fno-stack-protector" >> $(PKG_BUILD_DIR)/config.mk
endef

define Build/InstallDev
	$(INSTALL_DIR) $(1)/usr/include/xdp
	$(CP) $(PKG_INSTALL_DIR)/usr/include/xdp/*.h $(1)/usr/include/xdp/
	$(INSTALL_DIR) $(1)/usr/lib/bpf
	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libxdp.{a,so*} $(1)/usr/lib/
	$(CP) $(PKG_INSTALL_DIR)/usr/lib/bpf/*.o $(1)/usr/lib/bpf
	$(INSTALL_DIR) $(1)/usr/lib/pkgconfig
	$(CP) $(PKG_INSTALL_DIR)/usr/lib/pkgconfig/libxdp.pc \
		$(1)/usr/lib/pkgconfig/
	$(SED) 's,/usr/include,$$$${prefix}/include,g' \
		$(1)/usr/lib/pkgconfig/libxdp.pc
	$(SED) 's,/usr/lib,$$$${exec_prefix}/lib,g' \
		$(1)/usr/lib/pkgconfig/libxdp.pc
endef

define Package/xdp-filter/install
	$(INSTALL_DIR) $(1)/usr/sbin
	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/xdp-filter $(1)/usr/sbin
endef

define Package/xdp-loader/install
	$(INSTALL_DIR) $(1)/usr/sbin
	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/xdp-loader $(1)/usr/sbin
endef

define Package/xdpdump/install
	$(INSTALL_DIR) $(1)/usr/sbin
	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/xdpdump $(1)/usr/sbin
endef

define Package/libxdp/install
	$(INSTALL_DIR) $(1)/usr/lib/bpf
	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libxdp.so.* $(1)/usr/lib/
	$(CP) $(PKG_INSTALL_DIR)/usr/lib/bpf/*.o $(1)/usr/lib/bpf
endef

$(eval $(call BuildPackage,libxdp))
$(eval $(call BuildPackage,xdp-filter))
$(eval $(call BuildPackage,xdp-loader))
$(eval $(call BuildPackage,xdpdump))