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-rw-r--r--tools/testing/selftests/bpf/progs/test_global_func10.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_global_func10.c b/tools/testing/selftests/bpf/progs/test_global_func10.c
new file mode 100644
index 000000000000..97b7031d0e22
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_global_func10.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <stddef.h>
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+
+struct Small {
+ int x;
+};
+
+struct Big {
+ int x;
+ int y;
+};
+
+__noinline int foo(const struct Big *big)
+{
+ if (!big)
+ return 0;
+
+ return bpf_get_prandom_u32() < big->y;
+}
+
+SEC("cgroup_skb/ingress")
+int test_cls(struct __sk_buff *skb)
+{
+ const struct Small small = {.x = skb->len };
+
+ return foo((struct Big *)&small) ? 1 : 0;
+}