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 #include <linux/netfilter_arp.h>
23
24 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
25 MODULE_LICENSE("GPL");
26 MODULE_DESCRIPTION("Xtables: Qdisc classification");
27 MODULE_ALIAS("ipt_CLASSIFY");
28 MODULE_ALIAS("ip6t_CLASSIFY");
29 MODULE_ALIAS("arpt_CLASSIFY");
30
31 static unsigned int
classify_tg(struct sk_buff * skb,const struct xt_action_param * par)32 classify_tg(struct sk_buff *skb, const struct xt_action_param *par)
33 {
34 const struct xt_classify_target_info *clinfo = par->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 .name = "CLASSIFY",
43 .revision = 0,
44 .family = NFPROTO_UNSPEC,
45 .hooks = (1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_FORWARD) |
46 (1 << NF_INET_POST_ROUTING),
47 .target = classify_tg,
48 .targetsize = sizeof(struct xt_classify_target_info),
49 .me = THIS_MODULE,
50 },
51 {
52 .name = "CLASSIFY",
53 .revision = 0,
54 .family = NFPROTO_ARP,
55 .hooks = (1 << NF_ARP_OUT) | (1 << NF_ARP_FORWARD),
56 .target = classify_tg,
57 .targetsize = sizeof(struct xt_classify_target_info),
58 .me = THIS_MODULE,
59 },
60 };
61
classify_tg_init(void)62 static int __init classify_tg_init(void)
63 {
64 return xt_register_targets(classify_tg_reg, ARRAY_SIZE(classify_tg_reg));
65 }
66
classify_tg_exit(void)67 static void __exit classify_tg_exit(void)
68 {
69 xt_unregister_targets(classify_tg_reg, ARRAY_SIZE(classify_tg_reg));
70 }
71
72 module_init(classify_tg_init);
73 module_exit(classify_tg_exit);
74
