From: Hou Tao <houtao1@xxxxxxxxxx>
Add bpf_dynptr_user_init() to initialize a bpf_dynptr_user object. It
will be used test_progs and bench. User can dereference the {data|size}
fields directly to get the address and length of the dynptr object.
Signed-off-by: Hou Tao <houtao1@xxxxxxxxxx>
---
tools/testing/selftests/bpf/bpf_util.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/tools/testing/selftests/bpf/bpf_util.h b/tools/testing/selftests/bpf/bpf_util.h
index 5f6963a320d73..8ad7e97006c75 100644
--- a/tools/testing/selftests/bpf/bpf_util.h
+++ b/tools/testing/selftests/bpf/bpf_util.h
@@ -71,4 +71,13 @@ static inline void bpf_strlcpy(char *dst, const char *src, size_t sz)
#define ENOTSUPP 524
#endif
+/* sys_bpf() will check the validity of data and size */
+static inline void bpf_dynptr_user_init(void *data, __u32 size,
+ struct bpf_dynptr_user *dynptr)
+{
+ dynptr->data = data;
+ dynptr->size = size;
+ dynptr->reserved = 0;
+}
+
#endif /* __BPF_UTIL__ */
--
2.29.2
