1
2
3#ifndef __LIBBPF_H
4#define __LIBBPF_H
5
6#include <bpf/bpf.h>
7
8struct bpf_insn;
9
10
11
12#define BPF_ALU64_REG(OP, DST, SRC) \
13 ((struct bpf_insn) { \
14 .code = BPF_ALU64 | BPF_OP(OP) | BPF_X, \
15 .dst_reg = DST, \
16 .src_reg = SRC, \
17 .off = 0, \
18 .imm = 0 })
19
20#define BPF_ALU32_REG(OP, DST, SRC) \
21 ((struct bpf_insn) { \
22 .code = BPF_ALU | BPF_OP(OP) | BPF_X, \
23 .dst_reg = DST, \
24 .src_reg = SRC, \
25 .off = 0, \
26 .imm = 0 })
27
28
29
30#define BPF_ALU64_IMM(OP, DST, IMM) \
31 ((struct bpf_insn) { \
32 .code = BPF_ALU64 | BPF_OP(OP) | BPF_K, \
33 .dst_reg = DST, \
34 .src_reg = 0, \
35 .off = 0, \
36 .imm = IMM })
37
38#define BPF_ALU32_IMM(OP, DST, IMM) \
39 ((struct bpf_insn) { \
40 .code = BPF_ALU | BPF_OP(OP) | BPF_K, \
41 .dst_reg = DST, \
42 .src_reg = 0, \
43 .off = 0, \
44 .imm = IMM })
45
46
47
48#define BPF_MOV64_REG(DST, SRC) \
49 ((struct bpf_insn) { \
50 .code = BPF_ALU64 | BPF_MOV | BPF_X, \
51 .dst_reg = DST, \
52 .src_reg = SRC, \
53 .off = 0, \
54 .imm = 0 })
55
56#define BPF_MOV32_REG(DST, SRC) \
57 ((struct bpf_insn) { \
58 .code = BPF_ALU | BPF_MOV | BPF_X, \
59 .dst_reg = DST, \
60 .src_reg = SRC, \
61 .off = 0, \
62 .imm = 0 })
63
64
65
66#define BPF_MOV64_IMM(DST, IMM) \
67 ((struct bpf_insn) { \
68 .code = BPF_ALU64 | BPF_MOV | BPF_K, \
69 .dst_reg = DST, \
70 .src_reg = 0, \
71 .off = 0, \
72 .imm = IMM })
73
74#define BPF_MOV32_IMM(DST, IMM) \
75 ((struct bpf_insn) { \
76 .code = BPF_ALU | BPF_MOV | BPF_K, \
77 .dst_reg = DST, \
78 .src_reg = 0, \
79 .off = 0, \
80 .imm = IMM })
81
82
83#define BPF_LD_IMM64(DST, IMM) \
84 BPF_LD_IMM64_RAW(DST, 0, IMM)
85
86#define BPF_LD_IMM64_RAW(DST, SRC, IMM) \
87 ((struct bpf_insn) { \
88 .code = BPF_LD | BPF_DW | BPF_IMM, \
89 .dst_reg = DST, \
90 .src_reg = SRC, \
91 .off = 0, \
92 .imm = (__u32) (IMM) }), \
93 ((struct bpf_insn) { \
94 .code = 0, \
95 .dst_reg = 0, \
96 .src_reg = 0, \
97 .off = 0, \
98 .imm = ((__u64) (IMM)) >> 32 })
99
100#ifndef BPF_PSEUDO_MAP_FD
101# define BPF_PSEUDO_MAP_FD 1
102#endif
103
104
105#define BPF_LD_MAP_FD(DST, MAP_FD) \
106 BPF_LD_IMM64_RAW(DST, BPF_PSEUDO_MAP_FD, MAP_FD)
107
108
109
110
111#define BPF_LD_ABS(SIZE, IMM) \
112 ((struct bpf_insn) { \
113 .code = BPF_LD | BPF_SIZE(SIZE) | BPF_ABS, \
114 .dst_reg = 0, \
115 .src_reg = 0, \
116 .off = 0, \
117 .imm = IMM })
118
119
120
121#define BPF_LDX_MEM(SIZE, DST, SRC, OFF) \
122 ((struct bpf_insn) { \
123 .code = BPF_LDX | BPF_SIZE(SIZE) | BPF_MEM, \
124 .dst_reg = DST, \
125 .src_reg = SRC, \
126 .off = OFF, \
127 .imm = 0 })
128
129
130
131#define BPF_STX_MEM(SIZE, DST, SRC, OFF) \
132 ((struct bpf_insn) { \
133 .code = BPF_STX | BPF_SIZE(SIZE) | BPF_MEM, \
134 .dst_reg = DST, \
135 .src_reg = SRC, \
136 .off = OFF, \
137 .imm = 0 })
138
139
140
141#define BPF_STX_XADD(SIZE, DST, SRC, OFF) \
142 ((struct bpf_insn) { \
143 .code = BPF_STX | BPF_SIZE(SIZE) | BPF_XADD, \
144 .dst_reg = DST, \
145 .src_reg = SRC, \
146 .off = OFF, \
147 .imm = 0 })
148
149
150
151#define BPF_ST_MEM(SIZE, DST, OFF, IMM) \
152 ((struct bpf_insn) { \
153 .code = BPF_ST | BPF_SIZE(SIZE) | BPF_MEM, \
154 .dst_reg = DST, \
155 .src_reg = 0, \
156 .off = OFF, \
157 .imm = IMM })
158
159
160
161#define BPF_JMP_REG(OP, DST, SRC, OFF) \
162 ((struct bpf_insn) { \
163 .code = BPF_JMP | BPF_OP(OP) | BPF_X, \
164 .dst_reg = DST, \
165 .src_reg = SRC, \
166 .off = OFF, \
167 .imm = 0 })
168
169
170
171#define BPF_JMP_IMM(OP, DST, IMM, OFF) \
172 ((struct bpf_insn) { \
173 .code = BPF_JMP | BPF_OP(OP) | BPF_K, \
174 .dst_reg = DST, \
175 .src_reg = 0, \
176 .off = OFF, \
177 .imm = IMM })
178
179
180
181#define BPF_RAW_INSN(CODE, DST, SRC, OFF, IMM) \
182 ((struct bpf_insn) { \
183 .code = CODE, \
184 .dst_reg = DST, \
185 .src_reg = SRC, \
186 .off = OFF, \
187 .imm = IMM })
188
189
190
191#define BPF_EXIT_INSN() \
192 ((struct bpf_insn) { \
193 .code = BPF_JMP | BPF_EXIT, \
194 .dst_reg = 0, \
195 .src_reg = 0, \
196 .off = 0, \
197 .imm = 0 })
198
199#endif
200
