include/uapi/linux/bpf_common.h

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