linux-headers (unknown)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef __LINUX_BPF_COMMON_H__
3 #define __LINUX_BPF_COMMON_H__
4
5 /* Instruction classes */
6 #define BPF_CLASS(code) ((code) & 0x07)
7 #define BPF_LD 0x00
8 #define BPF_LDX 0x01
9 #define BPF_ST 0x02
10 #define BPF_STX 0x03
11 #define BPF_ALU 0x04
12 #define BPF_JMP 0x05
13 #define BPF_RET 0x06
14 #define BPF_MISC 0x07
15
16 /* ld/ldx fields */
17 #define BPF_SIZE(code) ((code) & 0x18)
18 #define BPF_W 0x00 /* 32-bit */
19 #define BPF_H 0x08 /* 16-bit */
20 #define BPF_B 0x10 /* 8-bit */
21 /* eBPF BPF_DW 0x18 64-bit */
22 #define BPF_MODE(code) ((code) & 0xe0)
23 #define BPF_IMM 0x00
24 #define BPF_ABS 0x20
25 #define BPF_IND 0x40
26 #define BPF_MEM 0x60
27 #define BPF_LEN 0x80
28 #define BPF_MSH 0xa0
29
30 /* alu/jmp fields */
31 #define BPF_OP(code) ((code) & 0xf0)
32 #define BPF_ADD 0x00
33 #define BPF_SUB 0x10
34 #define BPF_MUL 0x20
35 #define BPF_DIV 0x30
36 #define BPF_OR 0x40
37 #define BPF_AND 0x50
38 #define BPF_LSH 0x60
39 #define BPF_RSH 0x70
40 #define BPF_NEG 0x80
41 #define BPF_MOD 0x90
42 #define BPF_XOR 0xa0
43
44 #define BPF_JA 0x00
45 #define BPF_JEQ 0x10
46 #define BPF_JGT 0x20
47 #define BPF_JGE 0x30
48 #define BPF_JSET 0x40
49 #define BPF_SRC(code) ((code) & 0x08)
50 #define BPF_K 0x00
51 #define BPF_X 0x08
52
53 #ifndef BPF_MAXINSNS
54 #define BPF_MAXINSNS 4096
55 #endif
56
57 #endif /* __LINUX_BPF_COMMON_H__ */
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