github.com/looshlee/beatles@v0.0.0-20220727174639-742810ab631c/bpf/include/linux/bpf_common.h (about)

     1  #ifndef __LINUX_BPF_COMMON_H__
     2  #define __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 /* __LINUX_BPF_COMMON_H__ */