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kernel/linux-imx6_3.14.28/net/sched/sch_blackhole.c 1.21 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * net/sched/sch_blackhole.c	Black hole queue
   *
   *		This program is free software; you can redistribute it and/or
   *		modify it under the terms of the GNU General Public License
   *		as published by the Free Software Foundation; either version
   *		2 of the License, or (at your option) any later version.
   *
   * Authors:	Thomas Graf <tgraf@suug.ch>
   *
   * Note: Quantum tunneling is not supported.
   */
  
  #include <linux/module.h>
  #include <linux/types.h>
  #include <linux/kernel.h>
  #include <linux/skbuff.h>
  #include <net/pkt_sched.h>
  
  static int blackhole_enqueue(struct sk_buff *skb, struct Qdisc *sch)
  {
  	qdisc_drop(skb, sch);
  	return NET_XMIT_SUCCESS;
  }
  
  static struct sk_buff *blackhole_dequeue(struct Qdisc *sch)
  {
  	return NULL;
  }
  
  static struct Qdisc_ops blackhole_qdisc_ops __read_mostly = {
  	.id		= "blackhole",
  	.priv_size	= 0,
  	.enqueue	= blackhole_enqueue,
  	.dequeue	= blackhole_dequeue,
  	.peek		= blackhole_dequeue,
  	.owner		= THIS_MODULE,
  };
  
  static int __init blackhole_module_init(void)
  {
  	return register_qdisc(&blackhole_qdisc_ops);
  }
  
  static void __exit blackhole_module_exit(void)
  {
  	unregister_qdisc(&blackhole_qdisc_ops);
  }
  
  module_init(blackhole_module_init)
  module_exit(blackhole_module_exit)
  
  MODULE_LICENSE("GPL");