LXR linux/include/uapi/linux/bpf

   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