On 17/06/2022 09.36, Zhang Chen wrote:
TODO: This test case does not work. Need add ubpf.h header in qtest
compile "-I ../ubpf/vm -I ../ubpf/vm/inc".
I'm not sure if we need it in qtest. Because normal tests/qtest
not including external module test case like fdt. Or we just
need a qtest case for filter-ubpf module.
This test will load pre-compiled ebpf binary and run it in QEMU.
Signed-off-by: Zhang Chen <chen.zh...@intel.com>
---
[...]
diff --git a/tests/qtest/ubpf-test.c b/tests/qtest/ubpf-test.c
new file mode 100644
index 0000000000..6e70a99320
--- /dev/null
+++ b/tests/qtest/ubpf-test.c
@@ -0,0 +1,64 @@
+/*
+ * QEMU Userspace eBPF test case
+ *
+ * Copyright(C) 2022 Intel Corporation.
+ *
+ * Author:
+ * Zhang Chen <chen.zh...@intel.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "libqtest.h"
+#include "ebpf/ubpf.h"
+
+/*
+ * Demo userspace ebpf program
+ * The test binary use clang to build this source code:
+ * demo_ubpf.c
+ *
+ * #include <stdint.h>
+ *
+ * static uint32_t double_it(uint32_t a)
+ * {
+ * return (a * 2);
+ * }
+ *
+ * uint32_t bpf_prog(int32_t *arg) {
+ * uint32_t result = 0;
+ * result = double_it(*arg);
+ *
+ * return result;
+ * }
+ *
+ * Build the userspace ebpf program binary file:
+ * clang -O2 -target bpf -c demo_ubpf.c -o demo_ubpf.o
+ *
+ * The external terget source:
+ * printf "%b" '\x05\x00\x00\x00' > integer_5.mem
+ *
+ */
+
+int main(int argc, char **argc)
+{
+ UbpfState u_ebpf;
+ char program_path[] = "demo_ubpf.o";
+ /* uBPF can read target from internal source or external source*/
+ char target_path[] = "integer_5.mem";
+
+ qemu_ubpf_init_jit(&u_ebpf, true);
+
+ g_assert_cmpuint(qemu_ubpf_prepare(&u_ebpf, program_path), ==, 0);
+
+ g_assert_true(qemu_ubpf_read_target(&u_ebpf, target_path));
+
+ g_assert_cmpuint(qemu_run_ubpf_once(&u_ebpf, u_ebpf.target,
+ u_ebpf.target_len), ==, 10);
+
+ ubpf_destroy(u_ebpf.vm);
+
+ return 0;
+}
Apart from the #include "libqtest.h" there is nothing related to qtest in
here ... should this maybe rather go into test/unit/ instead?
Thomas
