This is a preparation to add libbpf support for Qemu. When it is
enabled Qemu can load eBPF programs and manipulated eBPF maps
libbpf APIs.
When configured with --enable-libbpf, availability of libbpf is
checked. If it exists then CONFIG_LIBBPF is defined and the qemu
binary is linked with libbpf.
Signed-off-by: Prashant Bhole <prashantbhole.li...@gmail.com>
---
configure | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/configure b/configure
index 6099be1d84..a7e8a8450d 100755
--- a/configure
+++ b/configure
@@ -504,6 +504,7 @@ debug_mutex="no"
libpmem=""
default_devices="yes"
plugins="no"
+libbpf="no"
supported_cpu="no"
supported_os="no"
@@ -1539,6 +1540,8 @@ for opt do
;;
--disable-plugins) plugins="no"
;;
+ --enable-libbpf) libbpf="yes"
+ ;;
*)
echo "ERROR: unknown option $opt"
echo "Try '$0 --help' for more information"
@@ -1825,6 +1828,7 @@ disabled with --disable-FEATURE, default is enabled if
available:
debug-mutex mutex debugging support
libpmem libpmem support
xkbcommon xkbcommon support
+ libbpf eBPF program support
NOTE: The object files are built at the place where configure is launched
EOF
@@ -6084,6 +6088,19 @@ case "$slirp" in
;;
esac
+##########################################
+# Do we have libbpf
+if test "$libbpf" != "no" ; then
+ if $pkg_config libbpf; then
+ libbpf="yes"
+ libbpf_libs=$($pkg_config --libs libbpf)
+ else
+ if test "$libbpf" == "yes" ; then
+ feature_not_found "libbpf" "Install libbpf devel"
+ fi
+ libbpf="no"
+ fi
+fi
##########################################
# End of CC checks
@@ -6599,6 +6616,7 @@ echo "libpmem support $libpmem"
echo "libudev $libudev"
echo "default devices $default_devices"
echo "plugin support $plugins"
+echo "XDP offload support $libbpf"
if test "$supported_cpu" = "no"; then
echo
@@ -7457,6 +7475,11 @@ if test "$plugins" = "yes" ; then
fi
fi
+if test "$libbpf" = "yes" ; then
+ echo "CONFIG_LIBBPF=y" >> $config_host_mak
+ echo "LIBBPF_LIBS=$libbpf_libs" >> $config_host_mak
+fi
+
if test "$tcg_interpreter" = "yes"; then
QEMU_INCLUDES="-iquote \$(SRC_PATH)/tcg/tci $QEMU_INCLUDES"
elif test "$ARCH" = "sparc64" ; then
--
2.20.1
