tcpreplay: extend configurability of injection library

tcpreplay can inject packets using a number of mechanisms/libraries.
A default one is PF_PACKET, another one is libdnet, and also libpcap.

This change adds a menu configuration to select the preffered one.
However, if another library selects (libpcap for example), this
would also affect the library.

Signed-off-by: Alexandru Ardelean <[email protected]>

Author: commodo

net/tcpreplay/Config.in

@@ -0,0 +1,29 @@
+menu "Configuration"
+	depends on PACKAGE_tcpreplay-dependencies
+
+choice
+	prompt "Preferred injection mechanism"
+	default TCPREPLAY_PF_PACKET
+
+config TCPREPLAY_PF_PACKET
+	bool "Linux PF_PACKET"
+
+config TCPREPLAY_LIBDNET
+	bool "libdnet"
+	select PACKAGE_libdnet
+
+config CONFIG_TCPREPLAY_LIBPCAP_INJECT
+	bool "libpcap inject() function"
+	select PACKAGE_libpcap
+
+config CONFIG_TCPREPLAY_LIBPCAP_SEND_PACKET
+	bool "libpcap sendpacket() function"
+	select PACKAGE_libpcap
+
+config TCPREPLAY_LIBBPF
+	bool "libbpf"
+	select PACKAGE_libbpf
+
+endchoice
+
+endmenu

net/tcpreplay/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=tcpreplay
 PKG_VERSION:=4.5.2
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://github.com/appneta/tcpreplay/releases/download/v$(PKG_VERSION)
@@ -29,13 +29,30 @@ TCPREPLAY_MODULES:= \
 	tcpbridge tcpcapinfo tcpliveplay tcpprep \
 	tcpreplay tcpreplay-edit tcprewrite
 
-define Package/tcpreplay/default
+define Package/tcpreplay/base
   SUBMENU:=Tcpreplay
   SECTION:=net
   CATEGORY:=Network
   URL:=http://tcpreplay.appneta.com/
   MAINTAINER:=Alexandru Ardelean <[email protected]>
-  DEPENDS:=+librt +libpcap +libdnet +USE_MUSL:musl-fts
+endef
+
+define Package/tcpreplay/default
+$(call Package/tcpreplay/base)
+  DEPENDS:=+librt +USE_MUSL:musl-fts \
+           +PACKAGE_lidnet:libdnet \
+           +PACKAGE_libpcap:libpcap \
+           +PACKAGE_libbpf:libbpf \
+           +tcpreplay-dependencies
+endef
+
+define Package/tcpreplay-dependencies
+$(call Package/tcpreplay/base)
+  TITLE:=Dependency handling for tcpreplay packages
+endef
+
+define Package/tcpreplay-dependencies/config
+  source "$(SOURCE)/Config.in"
 endef
 
 define Package/tcpbridge
@@ -116,6 +133,10 @@ define Package/tcprewrite/description
   Rewrite/edit the packets in a pcap file
 endef
 
+define Package/tcpreplay-dependencies/description
+  A meta package to select preferred library for tcpreplay (libdnet, libpcap, libbpf, etc).
+endef
+
 define Package/tcpreplay-all/description
   Tcpreplay is a suite of free Open Source utilities for
   editing and replaying previously captured network traffic.
@@ -139,10 +160,24 @@ CONFIGURE_VARS += \
 	ac_cv_path_pcncfg=no
 
 CONFIGURE_ARGS += \
-	--enable-force-pf \
-	--enable-dynamic-link \
-	--with-libdnet="$(STAGING_DIR)/usr" \
-	--with-libpcap="$(STAGING_DIR)/usr"
+	--enable-dynamic-link
+
+ifneq ($(CONFIG_TCPREPLAY_LIBBPF),)
+CONFIGURE_ARGS += \
+	--enable-force-bpf
+else ifneq ($(CONFIG_TCPREPLAY_LIBPCAP_INJECT),)
+CONFIGURE_ARGS += \
+	--enable-force-inject
+else ifneq ($(CONFIG_TCPREPLAY_LIBPCAP_SEND_PACKET),)
+CONFIGURE_ARGS += \
+	--enable-force-sendpacket
+else ifneq ($(CONFIG_TCPREPLAY_LIBDNET),)
+CONFIGURE_ARGS += \
+	--enable-force-libdnet
+else
+CONFIGURE_ARGS += \
+	--enable-force-pf
+endif
 
 TARGET_CFLAGS += -std=gnu11
 
@@ -153,10 +188,16 @@ define tcpreplayTemplate
   endef
 endef
 
+define Package/tcpreplay-dependencies/install
+	:
+endef
+
 define Package/tcpreplay-all/install
 	:
 endef
 
+$(eval $(call BuildPackage,tcpreplay-dependencies))
+
 $(foreach m, $(TCPREPLAY_MODULES), \
 	$(eval $(call tcpreplayTemplate,$(m))) \
 	$(eval $(call BuildPackage,$(m))) \