1#ifndef _XT_BPF_H
2#define _XT_BPF_H
3
4#include <linux/filter.h>
5#include <linux/limits.h>
6#include <linux/types.h>
7
8#define XT_BPF_MAX_NUM_INSTR	64
9#define XT_BPF_PATH_MAX		(XT_BPF_MAX_NUM_INSTR * sizeof(struct sock_filter))
10
11struct bpf_prog;
12
13struct xt_bpf_info {
14	__u16 bpf_program_num_elem;
15	struct sock_filter bpf_program[XT_BPF_MAX_NUM_INSTR];
16
17	/* only used in the kernel */
18	struct bpf_prog *filter __attribute__((aligned(8)));
19};
20
21enum xt_bpf_modes {
22	XT_BPF_MODE_BYTECODE,
23	XT_BPF_MODE_FD_PINNED,
24	XT_BPF_MODE_FD_ELF,
25};
26
27struct xt_bpf_info_v1 {
28	__u16 mode;
29	__u16 bpf_program_num_elem;
30	__s32 fd;
31	union {
32		struct sock_filter bpf_program[XT_BPF_MAX_NUM_INSTR];
33		char path[XT_BPF_PATH_MAX];
34	};
35
36	/* only used in the kernel */
37	struct bpf_prog *filter __attribute__((aligned(8)));
38};
39
40#endif /*_XT_BPF_H */
41