blob: 3fee70d9814f91f0e61d06aeecf6b1d5a6f94eeb [file] [log] [blame]
Thomas Graf63d886c2005-07-05 15:29:16 -07001/*
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
Paul Gortmaker075640e2015-10-07 17:27:45 -040014#include <linux/init.h>
Thomas Graf63d886c2005-07-05 15:29:16 -070015#include <linux/types.h>
16#include <linux/kernel.h>
Thomas Graf63d886c2005-07-05 15:29:16 -070017#include <linux/skbuff.h>
18#include <net/pkt_sched.h>
19
20static int blackhole_enqueue(struct sk_buff *skb, struct Qdisc *sch)
21{
22 qdisc_drop(skb, sch);
23 return NET_XMIT_SUCCESS;
24}
25
26static struct sk_buff *blackhole_dequeue(struct Qdisc *sch)
27{
28 return NULL;
29}
30
Eric Dumazet20fea082007-11-14 01:44:41 -080031static struct Qdisc_ops blackhole_qdisc_ops __read_mostly = {
Thomas Graf63d886c2005-07-05 15:29:16 -070032 .id = "blackhole",
33 .priv_size = 0,
34 .enqueue = blackhole_enqueue,
35 .dequeue = blackhole_dequeue,
Jarek Poplawski8e3af972008-10-31 00:45:55 -070036 .peek = blackhole_dequeue,
Thomas Graf63d886c2005-07-05 15:29:16 -070037 .owner = THIS_MODULE,
38};
39
Paul Gortmaker075640e2015-10-07 17:27:45 -040040static int __init blackhole_init(void)
Thomas Graf63d886c2005-07-05 15:29:16 -070041{
42 return register_qdisc(&blackhole_qdisc_ops);
43}
Paul Gortmaker075640e2015-10-07 17:27:45 -040044device_initcall(blackhole_init)