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63d886c9 TG |
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 | ||
075640e3 | 14 | #include <linux/init.h> |
63d886c9 TG |
15 | #include <linux/types.h> |
16 | #include <linux/kernel.h> | |
63d886c9 TG |
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 | ||
20fea08b | 31 | static struct Qdisc_ops blackhole_qdisc_ops __read_mostly = { |
63d886c9 TG |
32 | .id = "blackhole", |
33 | .priv_size = 0, | |
34 | .enqueue = blackhole_enqueue, | |
35 | .dequeue = blackhole_dequeue, | |
8e3af978 | 36 | .peek = blackhole_dequeue, |
63d886c9 TG |
37 | .owner = THIS_MODULE, |
38 | }; | |
39 | ||
075640e3 | 40 | static int __init blackhole_init(void) |
63d886c9 TG |
41 | { |
42 | return register_qdisc(&blackhole_qdisc_ops); | |
43 | } | |
075640e3 | 44 | device_initcall(blackhole_init) |