__BPF_JUMP
insn[0] = __BPF_JUMP(BPF_JMP | BPF_JA, len - 2, 0, 0);
insn[i] = __BPF_JUMP(BPF_JMP | BPF_JGT, 0xffffffff, jmp_off--, 0);
insn[i + j] = __BPF_JUMP(BPF_JMP | BPF_JA,
insn[i + j] = __BPF_JUMP(BPF_JMP | BPF_JA, rlen - 1 - j,
insn[0] = __BPF_JUMP(BPF_JMP | BPF_JA, len - 2, 0, 0);