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_ipv4/ip_tables.h>
19 #include <linux/netfilter_ipv4/ipt_CLASSIFY.h>
21 MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
22 MODULE_LICENSE("GPL");
23 MODULE_DESCRIPTION("iptables qdisc classification target module");
26 target(struct sk_buff
**pskb
,
27 const struct net_device
*in
,
28 const struct net_device
*out
,
33 const struct ipt_classify_target_info
*clinfo
= targinfo
;
35 if((*pskb
)->priority
!= clinfo
->priority
) {
36 (*pskb
)->priority
= clinfo
->priority
;
37 (*pskb
)->nfcache
|= NFC_ALTERED
;
44 checkentry(const char *tablename
,
45 const struct ipt_entry
*e
,
47 unsigned int targinfosize
,
48 unsigned int hook_mask
)
50 if (targinfosize
!= IPT_ALIGN(sizeof(struct ipt_classify_target_info
))){
51 printk(KERN_ERR
"CLASSIFY: invalid size (%u != %Zu).\n",
53 IPT_ALIGN(sizeof(struct ipt_classify_target_info
)));
57 if (hook_mask
& ~((1 << NF_IP_LOCAL_OUT
) | (1 << NF_IP_FORWARD
) |
58 (1 << NF_IP_POST_ROUTING
))) {
59 printk(KERN_ERR
"CLASSIFY: only valid in LOCAL_OUT, FORWARD "
60 "and POST_ROUTING.\n");
64 if (strcmp(tablename
, "mangle") != 0) {
65 printk(KERN_ERR
"CLASSIFY: can only be called from "
66 "\"mangle\" table, not \"%s\".\n",
74 static struct ipt_target ipt_classify_reg
= {
77 .checkentry
= checkentry
,
81 static int __init
init(void)
83 return ipt_register_target(&ipt_classify_reg
);
86 static void __exit
fini(void)
88 ipt_unregister_target(&ipt_classify_reg
);