Adding upstream version 3.3.4.upstream/3.3.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/libknot/xdp/Makefile.am b/src/libknot/xdp/Makefile.am
new file mode 100644
index 0000000..cb58438
--- /dev/null
+++ b/src/libknot/xdp/Makefile.am
@@ -0,0 +1,20 @@
+# Useful commands:
+#   make filter
+#   ip link show $eth
+#   sudo ip link set dev $eth xdp off
+#   sudo ip link set dev $eth xdp obj ./bpf-kernel.o
+#
+# Built using LLVM/CLANG 14.
+#
+# When updating check using `llvm-objdump -h bpf-kernel.o` if .BTF and .BTF.ext
+# sections are present.
+
+EXTRA_DIST = bpf-kernel-obj.c bpf-kernel.c
+
+.PHONY: filter
+
+filter:
+	rm -f bpf-kernel.o bpf-kernel-obj.c
+	clang -target bpf -Wall -O2 -g -DNDEBUG -c -o bpf-kernel.o -I/usr/include/x86_64-linux-gnu -include ../../config.h bpf-kernel.c
+	llvm-strip -S bpf-kernel.o
+	xxd -i bpf-kernel.o > bpf-kernel-obj.c