1 /*
2 * This is a module which is used for setting the skb->priority field
3 * of an skb for qdisc classification.
4 */
5
6 /* (C) 2001-2002 Patrick McHardy <kaber@trash.net>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13 #include <linux/module.h>
14 #include <linux/skbuff.h>
15 #include <linux/ip.h>
16 #include <net/checksum.h>
17
18 #include <linux/netfilter_ipv4.h>
19 #include <linux/netfilter_ipv6.h>
20 #include <linux/netfilter/x_tables.h>
21 #include <linux/netfilter/xt_CLASSIFY.h>
22
23 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
24 MODULE_LICENSE("GPL");
25 MODULE_DESCRIPTION("Xtables: Qdisc classification");
26 MODULE_ALIAS("ipt_CLASSIFY");
27 MODULE_ALIAS("ip6t_CLASSIFY");
28
29 static unsigned int
30 classify_tg(struct sk_buff *skb, const struct net_device *in,
31 const struct net_device *out, unsigned int hooknum,
32 const struct xt_target *target, const void *targinfo)
33 {
34 const struct xt_classify_target_info *clinfo = targinfo;
35
36 skb->priority = clinfo->priority;
37 return XT_CONTINUE;
38 }
39
40 static struct xt_target classify_tg_reg[] __read_mostly = {
41 {
42 .family = AF_INET,
43 .name = "CLASSIFY",
44 .target = classify_tg,
45 .targetsize = sizeof(struct xt_classify_target_info),
46 .table = "mangle",
47 .hooks = (1 << NF_INET_LOCAL_OUT) |
48 (1 << NF_INET_FORWARD) |
49 (1 << NF_INET_POST_ROUTING),
50 .me = THIS_MODULE,
51 },
52 {
53 .name = "CLASSIFY",
54 .family = AF_INET6,
55 .target = classify_tg,
56 .targetsize = sizeof(struct xt_classify_target_info),
57 .table = "mangle",
58 .hooks = (1 << NF_INET_LOCAL_OUT) |
59 (1 << NF_INET_FORWARD) |
60 (1 << NF_INET_POST_ROUTING),
61 .me = THIS_MODULE,
62 },
63 };
64
65 static int __init classify_tg_init(void)
66 {
67 return xt_register_targets(classify_tg_reg,
68 ARRAY_SIZE(classify_tg_reg));
69 }
70
71 static void __exit classify_tg_exit(void)
72 {
73 xt_unregister_targets(classify_tg_reg, ARRAY_SIZE(classify_tg_reg));
74 }
75
76 module_init(classify_tg_init);
77 module_exit(classify_tg_exit);
78
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