Sec  uint32
	Usec uint32
}

type TpacketHdrV1 struct {
	Block_status        uint32
	Num_pkts            uint32
	Offset_to_first_pkt uint32
	Blk_len             uint32
	Seq_num             uint64
	Ts_first_pkt        TpacketBDTS
	Ts_last_pkt         TpacketBDTS
}

type TpacketReq struct {
	Block_size uint32
	Block_nr   uint32
	Frame_size uint32
	Frame_nr   uint32

    if (!result_type || !result_type.hasStaticShape()) {
      return failure();
    }

    DenseIntElementsAttr num_attr;
    if (!matchPattern(op.getNum(), m_Constant(&num_attr))) {
      return rewriter.notifyMatchFailure(op, "Num must be a constant scalar");
    }

    if (num_attr.begin() == num_attr.end()) {