1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12#ifndef __LINUX_FILTER_H__
13#define __LINUX_FILTER_H__
14
15#include <linux/compiler.h>
16#include <linux/types.h>
17
18#define BPF_MAJOR_VERSION 1
19#define BPF_MINOR_VERSION 1
20
21struct sock_filter
22{
23 __u16 code;
24 __u8 jt;
25 __u8 jf;
26 __u32 k;
27};
28
29struct sock_fprog
30{
31 unsigned short len;
32 struct sock_filter __user *filter;
33};
34
35#define BPF_CLASS(code) ((code) & 0x07)
36#define BPF_LD 0x00
37#define BPF_LDX 0x01
38#define BPF_ST 0x02
39#define BPF_STX 0x03
40#define BPF_ALU 0x04
41#define BPF_JMP 0x05
42#define BPF_RET 0x06
43#define BPF_MISC 0x07
44
45#define BPF_SIZE(code) ((code) & 0x18)
46#define BPF_W 0x00
47#define BPF_H 0x08
48#define BPF_B 0x10
49#define BPF_MODE(code) ((code) & 0xe0)
50#define BPF_IMM 0x00
51#define BPF_ABS 0x20
52#define BPF_IND 0x40
53#define BPF_MEM 0x60
54#define BPF_LEN 0x80
55#define BPF_MSH 0xa0
56
57#define BPF_OP(code) ((code) & 0xf0)
58#define BPF_ADD 0x00
59#define BPF_SUB 0x10
60#define BPF_MUL 0x20
61#define BPF_DIV 0x30
62#define BPF_OR 0x40
63#define BPF_AND 0x50
64#define BPF_LSH 0x60
65#define BPF_RSH 0x70
66#define BPF_NEG 0x80
67#define BPF_JA 0x00
68#define BPF_JEQ 0x10
69#define BPF_JGT 0x20
70#define BPF_JGE 0x30
71#define BPF_JSET 0x40
72#define BPF_SRC(code) ((code) & 0x08)
73#define BPF_K 0x00
74#define BPF_X 0x08
75
76#define BPF_RVAL(code) ((code) & 0x18)
77#define BPF_A 0x10
78
79#define BPF_MISCOP(code) ((code) & 0xf8)
80#define BPF_TAX 0x00
81#define BPF_TXA 0x80
82
83#ifndef BPF_MAXINSNS
84#define BPF_MAXINSNS 4096
85#endif
86
87#ifndef BPF_STMT
88#define BPF_STMT(code, k) { (unsigned short)(code), 0, 0, k }
89#endif
90#ifndef BPF_JUMP
91#define BPF_JUMP(code, k, jt, jf) { (unsigned short)(code), jt, jf, k }
92#endif
93
94#define BPF_MEMWORDS 16
95
96#define SKF_AD_OFF (-0x1000)
97#define SKF_AD_PROTOCOL 0
98#define SKF_AD_PKTTYPE 4
99#define SKF_AD_IFINDEX 8
100#define SKF_AD_MAX 12
101#define SKF_NET_OFF (-0x100000)
102#define SKF_LL_OFF (-0x200000)
103
104#endif
105