2 * This is a module which is used for setting the skb->priority field
3 * of an skb for qdisc classification.
6 /* (C) 2001-2002 Patrick McHardy <kaber@trash.net>
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.
13 #include <linux/module.h>
14 #include <linux/skbuff.h>
16 #include <net/checksum.h>
18 #include <linux/netfilter/x_tables.h>
19 #include <linux/netfilter/xt_CLASSIFY.h>
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");
27 target(struct sk_buff **pskb,
28 const struct net_device *in,
29 const struct net_device *out,
34 const struct xt_classify_target_info *clinfo = targinfo;
36 if ((*pskb)->priority != clinfo->priority)
37 (*pskb)->priority = clinfo->priority;
43 checkentry(const char *tablename,
46 unsigned int targinfosize,
47 unsigned int hook_mask)
49 if (targinfosize != XT_ALIGN(sizeof(struct xt_classify_target_info))){
50 printk(KERN_ERR "CLASSIFY: invalid size (%u != %Zu).\n",
52 XT_ALIGN(sizeof(struct xt_classify_target_info)));
56 if (hook_mask & ~((1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_FORWARD) |
57 (1 << NF_IP_POST_ROUTING))) {
58 printk(KERN_ERR "CLASSIFY: only valid in LOCAL_OUT, FORWARD "
59 "and POST_ROUTING.\n");
63 if (strcmp(tablename, "mangle") != 0) {
64 printk(KERN_ERR "CLASSIFY: can only be called from "
65 "\"mangle\" table, not \"%s\".\n",
73 static struct xt_target classify_reg = {
76 .checkentry = checkentry,
79 static struct xt_target classify6_reg = {
82 .checkentry = checkentry,
87 static int __init init(void)
91 ret = xt_register_target(AF_INET, &classify_reg);
95 ret = xt_register_target(AF_INET6, &classify6_reg);
97 xt_unregister_target(AF_INET, &classify_reg);
102 static void __exit fini(void)
104 xt_unregister_target(AF_INET, &classify_reg);
105 xt_unregister_target(AF_INET6, &classify6_reg);