1#ifndef __BPF_EXPERIMENTAL__
 2#define __BPF_EXPERIMENTAL__
 3
 4#include <vmlinux.h>
 5#include <bpf/bpf_tracing.h>
 6#include <bpf/bpf_helpers.h>
 7#include <bpf/bpf_core_read.h>
 8
 9#define __contains(name, node) __attribute__((btf_decl_tag("contains:" #name ":" #node)))
10
11/* Description
12 *	Allocates an object of the type represented by 'local_type_id' in
13 *	program BTF. User may use the bpf_core_type_id_local macro to pass the
14 *	type ID of a struct in program BTF.
15 *
16 *	The 'local_type_id' parameter must be a known constant.
17 *	The 'meta' parameter is a hidden argument that is ignored.
18 * Returns
19 *	A pointer to an object of the type corresponding to the passed in
20 *	'local_type_id', or NULL on failure.
21 */
22extern void *bpf_obj_new_impl(__u64 local_type_id, void *meta) __ksym;
23
24/* Convenience macro to wrap over bpf_obj_new_impl */
25#define bpf_obj_new(type) ((type *)bpf_obj_new_impl(bpf_core_type_id_local(type), NULL))
26
27/* Description
28 *	Free an allocated object. All fields of the object that require
29 *	destruction will be destructed before the storage is freed.
30 *
31 *	The 'meta' parameter is a hidden argument that is ignored.
32 * Returns
33 *	Void.
34 */
35extern void bpf_obj_drop_impl(void *kptr, void *meta) __ksym;
36
37/* Convenience macro to wrap over bpf_obj_drop_impl */
38#define bpf_obj_drop(kptr) bpf_obj_drop_impl(kptr, NULL)
39
40/* Description
41 *	Add a new entry to the beginning of the BPF linked list.
42 * Returns
43 *	Void.
44 */
45extern void bpf_list_push_front(struct bpf_list_head *head, struct bpf_list_node *node) __ksym;
46
47/* Description
48 *	Add a new entry to the end of the BPF linked list.
49 * Returns
50 *	Void.
51 */
52extern void bpf_list_push_back(struct bpf_list_head *head, struct bpf_list_node *node) __ksym;
53
54/* Description
55 *	Remove the entry at the beginning of the BPF linked list.
56 * Returns
57 *	Pointer to bpf_list_node of deleted entry, or NULL if list is empty.
58 */
59extern struct bpf_list_node *bpf_list_pop_front(struct bpf_list_head *head) __ksym;
60
61/* Description
62 *	Remove the entry at the end of the BPF linked list.
63 * Returns
64 *	Pointer to bpf_list_node of deleted entry, or NULL if list is empty.
65 */
66extern struct bpf_list_node *bpf_list_pop_back(struct bpf_list_head *head) __ksym;
67
68#endif