diff mbox series

[bpf-next,v3,14/16] selftests/bpf: Add bpf_dynptr_user_init() helper

Message ID 20250327083455.848708-15-houtao@huaweicloud.com (mailing list archive)
State New
Delegated to: BPF
Headers show
Series Support dynptr key for hash map | expand

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Commit Message

Hou Tao March 27, 2025, 8:34 a.m. UTC 
From: Hou Tao <houtao1@huawei.com>

Add bpf_dynptr_user_init() to initialize a bpf_dynptr object. It will be
used by 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@huawei.com>
---
 tools/testing/selftests/bpf/testing_helpers.h | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/testing_helpers.h b/tools/testing/selftests/bpf/testing_helpers.h
index 46d7f7089f636..d93ee5bfa7f6f 100644
--- a/tools/testing/selftests/bpf/testing_helpers.h
+++ b/tools/testing/selftests/bpf/testing_helpers.h
@@ -58,4 +58,13 @@  int get_xlated_program(int fd_prog, struct bpf_insn **buf, __u32 *cnt);
 int testing_prog_flags(void);
 bool is_jit_enabled(void);
 
+/* sys_bpf() will check the validity of data and size */
+static inline void bpf_dynptr_user_init(void *data, __u32 size,
+					struct bpf_dynptr *dynptr)
+{
+	dynptr->data = data;
+	dynptr->size = size;
+	dynptr->reserved = 0;
+}
+
 #endif /* __TESTING_HELPERS_H */