[SCTP]: Switch ->from_skb() to net-endian.
[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         if ((*pskb)->priority != clinfo->priority)
37                 (*pskb)->priority = clinfo->priority;
38
39         return XT_CONTINUE;
40 }
41
42 static struct xt_target xt_classify_target[] = {
43         {
44                 .family         = AF_INET,
45                 .name           = "CLASSIFY",
46                 .target         = target,
47                 .targetsize     = sizeof(struct xt_classify_target_info),
48                 .table          = "mangle",
49                 .hooks          = (1 << NF_IP_LOCAL_OUT) |
50                                   (1 << NF_IP_FORWARD) |
51                                   (1 << NF_IP_POST_ROUTING),
52                 .me             = THIS_MODULE,
53         },
54         {
55                 .name           = "CLASSIFY",
56                 .family         = AF_INET6,
57                 .target         = target,
58                 .targetsize     = sizeof(struct xt_classify_target_info),
59                 .table          = "mangle",
60                 .hooks          = (1 << NF_IP_LOCAL_OUT) |
61                                   (1 << NF_IP_FORWARD) |
62                                   (1 << NF_IP_POST_ROUTING),
63                 .me             = THIS_MODULE,
64         },
65 };
66
67 static int __init xt_classify_init(void)
68 {
69         return xt_register_targets(xt_classify_target,
70                                    ARRAY_SIZE(xt_classify_target));
71 }
72
73 static void __exit xt_classify_fini(void)
74 {
75         xt_unregister_targets(xt_classify_target,
76                               ARRAY_SIZE(xt_classify_target));
77 }
78
79 module_init(xt_classify_init);
80 module_exit(xt_classify_fini);