github.com/cilium/cilium@v1.16.2/bpf/include/linux/bpf_common.h (about)

     1  /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2  /* Copyright Authors of the Linux kernel */
     3  
     4  #pragma once
     5  
     6  /* Instruction classes */
     7  #define BPF_CLASS(code) ((code) & 0x07)
     8  #define		BPF_LD		0x00
     9  #define		BPF_LDX		0x01
    10  #define		BPF_ST		0x02
    11  #define		BPF_STX		0x03
    12  #define		BPF_ALU		0x04
    13  #define		BPF_JMP		0x05
    14  #define		BPF_RET		0x06
    15  #define		BPF_MISC        0x07
    16  
    17  /* ld/ldx fields */
    18  #define BPF_SIZE(code)  ((code) & 0x18)
    19  #define		BPF_W		0x00
    20  #define		BPF_H		0x08
    21  #define		BPF_B		0x10
    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