{
       struct timeval tod;
       do_gettimeofday(&tod);
       if ((tod.tv_usec & 0xfff) < drop_threshold)   // COP_SEND_DROP_THRESH)
       {
          cop_hdr_t *cph;
          cph = (cop_hdr_t *)skb->h.th;
          printk("DROP: seq = %d ack = %d \n", cph->seq, cph->ack);
          if (cpo)
             cpo->txdrops += 1;
          kfree_skb(skb);
          return(0);
       }
    }