bpf_insns.h

   1 #ifndef BPF_INSNS_H
   2 #define BPF_INSNS_H
   3
   4 #ifndef BPF_MAXINSNS
   5 # define BPF_MAXINSNS   4096
   6 #endif
   7
   8 #define BPF_CLASS(code) ((code) & 0x07)
   9 #define BPF_LD          0x00
  10 #define BPF_LDX         0x01
  11 #define BPF_ST          0x02
  12 #define BPF_STX         0x03
  13 #define BPF_ALU         0x04
  14 #define BPF_JMP         0x05
  15 #define BPF_RET         0x06
  16 #define BPF_MISC        0x07
  17
  18 #define BPF_SIZE(code)  ((code) & 0x18)
  19 #define BPF_W           0x00
  20 #define BPF_H           0x08
  21 #define BPF_B           0x10
  22
  23 #define BPF_MODE(code)  ((code) & 0xe0)
  24 #define BPF_IMM         0x00
  25 #define BPF_ABS         0x20
  26 #define BPF_IND         0x40
  27 #define BPF_MEM         0x60
  28 #define BPF_LEN         0x80
  29 #define BPF_MSH         0xa0
  30
  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
  50 #define BPF_SRC(code)   ((code) & 0x08)
  51 #define BPF_K           0x00
  52 #define BPF_X           0x08
  53
  54 /* ret - BPF_K and BPF_X also apply */
  55 #define BPF_RVAL(code)  ((code) & 0x18)
  56 #define BPF_A           0x10
  57
  58 #define BPF_MISCOP(code) ((code) & 0xf8)
  59 #define BPF_TAX         0x00
  60 #define BPF_TXA         0x80
  61
  62 #endif /* BPF_INSNS_H */