ARM: 7409/1: Do not call flush_cache_user_range with mmap_sem held
[linux/fpc-iii.git] / net / sched / sch_blackhole.c
blob094a874b48bc43ca9337887bdd7cf462ee0ea63f
1 /*
2 * net/sched/sch_blackhole.c Black hole queue
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.
9 * Authors: Thomas Graf <tgraf@suug.ch>
11 * Note: Quantum tunneling is not supported.
14 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/kernel.h>
17 #include <linux/skbuff.h>
18 #include <net/pkt_sched.h>
20 static int blackhole_enqueue(struct sk_buff *skb, struct Qdisc *sch)
22 qdisc_drop(skb, sch);
23 return NET_XMIT_SUCCESS;
26 static struct sk_buff *blackhole_dequeue(struct Qdisc *sch)
28 return NULL;
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,
40 static int __init blackhole_module_init(void)
42 return register_qdisc(&blackhole_qdisc_ops);
45 static void __exit blackhole_module_exit(void)
47 unregister_qdisc(&blackhole_qdisc_ops);
50 module_init(blackhole_module_init)
51 module_exit(blackhole_module_exit)
53 MODULE_LICENSE("GPL");