Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-apm
[linux-2.6] / net / netfilter / xt_CLASSIFY.c
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/x_tables.h>
19 #include <linux/netfilter/xt_CLASSIFY.h>
20
21 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
22 MODULE_LICENSE("GPL");
23 MODULE_DESCRIPTION("iptables qdisc classification target module");
24 MODULE_ALIAS("ipt_CLASSIFY");
25
26 static unsigned int
27 target(struct sk_buff **pskb,
28        const struct net_device *in,
29        const struct net_device *out,
30        unsigned int hooknum,
31        const struct xt_target *target,
32        const void *targinfo)
33 {
34         const struct xt_classify_target_info *clinfo = targinfo;
35
36         (*pskb)->priority = clinfo->priority;
37         return XT_CONTINUE;
38 }
39
40 static struct xt_target xt_classify_target[] = {
41         {
42                 .family         = AF_INET,
43                 .name           = "CLASSIFY",
44                 .target         = target,
45                 .targetsize     = sizeof(struct xt_classify_target_info),
46                 .table          = "mangle",
47                 .hooks          = (1 << NF_IP_LOCAL_OUT) |
48                                   (1 << NF_IP_FORWARD) |
49                                   (1 << NF_IP_POST_ROUTING),
50                 .me             = THIS_MODULE,
51         },
52         {
53                 .name           = "CLASSIFY",
54                 .family         = AF_INET6,
55                 .target         = target,
56                 .targetsize     = sizeof(struct xt_classify_target_info),
57                 .table          = "mangle",
58                 .hooks          = (1 << NF_IP_LOCAL_OUT) |
59                                   (1 << NF_IP_FORWARD) |
60                                   (1 << NF_IP_POST_ROUTING),
61                 .me             = THIS_MODULE,
62         },
63 };
64
65 static int __init xt_classify_init(void)
66 {
67         return xt_register_targets(xt_classify_target,
68                                    ARRAY_SIZE(xt_classify_target));
69 }
70
71 static void __exit xt_classify_fini(void)
72 {
73         xt_unregister_targets(xt_classify_target,
74                               ARRAY_SIZE(xt_classify_target));
75 }
76
77 module_init(xt_classify_init);
78 module_exit(xt_classify_fini);