BPF_ADD		0x00
BPF_SUB		0x10
BPF_MUL		0x20
BPF_DIV		0x30
BPF_OR		0x40
BPF_AND		0x50
BPF_LSH		0x60
BPF_RSH		0x70
BPF_NEG		0x80
BPF_MOD		0x90
BPF_XOR		0xa0
BPF_MOV		0xb0
BPF_ARSH	0xc0
BPF_END		0xd0