1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI__LINUX_BPF_COMMON_H__
3 #define _UAPI__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 /* _UAPI__LINUX_BPF_COMMON_H__ */
58