1*63d886c9SThomas Graf /* 2*63d886c9SThomas Graf * net/sched/sch_blackhole.c Black hole queue 3*63d886c9SThomas Graf * 4*63d886c9SThomas Graf * This program is free software; you can redistribute it and/or 5*63d886c9SThomas Graf * modify it under the terms of the GNU General Public License 6*63d886c9SThomas Graf * as published by the Free Software Foundation; either version 7*63d886c9SThomas Graf * 2 of the License, or (at your option) any later version. 8*63d886c9SThomas Graf * 9*63d886c9SThomas Graf * Authors: Thomas Graf <tgraf@suug.ch> 10*63d886c9SThomas Graf * 11*63d886c9SThomas Graf * Note: Quantum tunneling is not supported. 12*63d886c9SThomas Graf */ 13*63d886c9SThomas Graf 14*63d886c9SThomas Graf #include <linux/config.h> 15*63d886c9SThomas Graf #include <linux/module.h> 16*63d886c9SThomas Graf #include <linux/types.h> 17*63d886c9SThomas Graf #include <linux/kernel.h> 18*63d886c9SThomas Graf #include <linux/netdevice.h> 19*63d886c9SThomas Graf #include <linux/skbuff.h> 20*63d886c9SThomas Graf #include <net/pkt_sched.h> 21*63d886c9SThomas Graf 22*63d886c9SThomas Graf static int blackhole_enqueue(struct sk_buff *skb, struct Qdisc *sch) 23*63d886c9SThomas Graf { 24*63d886c9SThomas Graf qdisc_drop(skb, sch); 25*63d886c9SThomas Graf return NET_XMIT_SUCCESS; 26*63d886c9SThomas Graf } 27*63d886c9SThomas Graf 28*63d886c9SThomas Graf static struct sk_buff *blackhole_dequeue(struct Qdisc *sch) 29*63d886c9SThomas Graf { 30*63d886c9SThomas Graf return NULL; 31*63d886c9SThomas Graf } 32*63d886c9SThomas Graf 33*63d886c9SThomas Graf static struct Qdisc_ops blackhole_qdisc_ops = { 34*63d886c9SThomas Graf .id = "blackhole", 35*63d886c9SThomas Graf .priv_size = 0, 36*63d886c9SThomas Graf .enqueue = blackhole_enqueue, 37*63d886c9SThomas Graf .dequeue = blackhole_dequeue, 38*63d886c9SThomas Graf .owner = THIS_MODULE, 39*63d886c9SThomas Graf }; 40*63d886c9SThomas Graf 41*63d886c9SThomas Graf static int __init blackhole_module_init(void) 42*63d886c9SThomas Graf { 43*63d886c9SThomas Graf return register_qdisc(&blackhole_qdisc_ops); 44*63d886c9SThomas Graf } 45*63d886c9SThomas Graf 46*63d886c9SThomas Graf static void __exit blackhole_module_exit(void) 47*63d886c9SThomas Graf { 48*63d886c9SThomas Graf unregister_qdisc(&blackhole_qdisc_ops); 49*63d886c9SThomas Graf } 50*63d886c9SThomas Graf 51*63d886c9SThomas Graf module_init(blackhole_module_init) 52*63d886c9SThomas Graf module_exit(blackhole_module_exit) 53*63d886c9SThomas Graf 54*63d886c9SThomas Graf MODULE_LICENSE("GPL"); 55