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