On 1/18/24 14:25, Martin KaFai Lau wrote:
On 1/17/24 5:49 PM, thinker.li@xxxxxxxxx wrote:
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 1cfbb89944c5..a2522fcfe57c 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -1700,10 +1700,22 @@ struct bpf_struct_ops_common_value {
enum bpf_struct_ops_state state;
};
+/* This macro helps developer to register a struct_ops type and generate
+ * type information correctly. Developers should use this macro to
register
+ * a struct_ops type instead of calling register_bpf_struct_ops()
directly.
+ */
+#define REGISTER_BPF_STRUCT_OPS(st_ops, type) \
One final nit on this macro. Rename this to register_bpf_struct_ops
since it is the one will be used a lot, so give it an easier typing name.
+ ({ \
+ struct bpf_struct_ops_##type { \
+ struct bpf_struct_ops_common_value common; \
+ struct type data ____cacheline_aligned_in_smp; \
+ }; \
+ BTF_TYPE_EMIT(struct bpf_struct_ops_##type); \
+ register_bpf_struct_ops(st_ops); \
and rename this to __register_bpf_struct_ops. Thanks.
Sure!
+ })
+
#if defined(CONFIG_BPF_JIT) && defined(CONFIG_BPF_SYSCALL)
#define BPF_MODULE_OWNER ((void *)((0xeB9FUL << 2) +
POISON_POINTER_DELTA))
-const struct bpf_struct_ops_desc *bpf_struct_ops_find(struct btf
*btf, u32 type_id);
-void bpf_struct_ops_init(struct btf *btf, struct bpf_verifier_log *log);
bool bpf_struct_ops_get(const void *kdata);
void bpf_struct_ops_put(const void *kdata);
int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map, void *key,
@@ -1745,16 +1757,11 @@ struct bpf_dummy_ops {
int bpf_struct_ops_test_run(struct bpf_prog *prog, const union
bpf_attr *kattr,
union bpf_attr __user *uattr);
#endif
+int bpf_struct_ops_desc_init(struct bpf_struct_ops_desc *st_ops_desc,
+ struct btf *btf,
+ struct bpf_verifier_log *log);
void bpf_map_struct_ops_info_fill(struct bpf_map_info *info, struct
bpf_map *map);
#else
-static inline const struct bpf_struct_ops_desc
*bpf_struct_ops_find(struct btf *btf, u32 type_id)
-{
- return NULL;
-}
-static inline void bpf_struct_ops_init(struct btf *btf,
- struct bpf_verifier_log *log)
-{
-}
static inline bool bpf_try_module_get(const void *data, struct
module *owner)
{
return try_module_get(owner);
@@ -1769,6 +1776,10 @@ static inline int
bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map,
{
return -EINVAL;
}
+static inline int bpf_struct_ops_link_create(union bpf_attr *attr)
+{
+ return -EOPNOTSUPP;
+}
This is added back here which was removed in patch 3...
Others lgtm.
