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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 | ||
14 | #include <linux/config.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/netdevice.h> | |
19 | #include <linux/skbuff.h> | |
20 | #include <net/pkt_sched.h> | |
21 | ||
22 | static int blackhole_enqueue(struct sk_buff *skb, struct Qdisc *sch) | |
23 | { | |
24 | qdisc_drop(skb, sch); | |
25 | return NET_XMIT_SUCCESS; | |
26 | } | |
27 | ||
28 | static struct sk_buff *blackhole_dequeue(struct Qdisc *sch) | |
29 | { | |
30 | return NULL; | |
31 | } | |
32 | ||
33 | static struct Qdisc_ops blackhole_qdisc_ops = { | |
34 | .id = "blackhole", | |
35 | .priv_size = 0, | |
36 | .enqueue = blackhole_enqueue, | |
37 | .dequeue = blackhole_dequeue, | |
38 | .owner = THIS_MODULE, | |
39 | }; | |
40 | ||
41 | static int __init blackhole_module_init(void) | |
42 | { | |
43 | return register_qdisc(&blackhole_qdisc_ops); | |
44 | } | |
45 | ||
46 | static void __exit blackhole_module_exit(void) | |
47 | { | |
48 | unregister_qdisc(&blackhole_qdisc_ops); | |
49 | } | |
50 | ||
51 | module_init(blackhole_module_init) | |
52 | module_exit(blackhole_module_exit) | |
53 | ||
54 | MODULE_LICENSE("GPL"); |