blob: d09ceb05013a90346f916a44a5c77830164a4250 [file] [log] [blame]
/* This is a module which is used for setting the NFMARK field of an skb. */
/* (C) 1999-2001 Marc Boucher <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/ip.h>
#include <net/checksum.h>
#include <linux/netfilter_ipv6/ip6_tables.h>
#include <linux/netfilter_ipv6/ip6t_MARK.h>
MODULE_AUTHOR("Netfilter Core Team <>");
static unsigned int
target(struct sk_buff **pskb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
const void *targinfo,
void *userinfo)
const struct ip6t_mark_target_info *markinfo = targinfo;
if((*pskb)->nfmark != markinfo->mark) {
(*pskb)->nfmark = markinfo->mark;
(*pskb)->nfcache |= NFC_ALTERED;
static int
checkentry(const char *tablename,
const struct ip6t_entry *e,
void *targinfo,
unsigned int targinfosize,
unsigned int hook_mask)
if (targinfosize != IP6T_ALIGN(sizeof(struct ip6t_mark_target_info))) {
printk(KERN_WARNING "MARK: targinfosize %u != %Zu\n",
IP6T_ALIGN(sizeof(struct ip6t_mark_target_info)));
return 0;
if (strcmp(tablename, "mangle") != 0) {
printk(KERN_WARNING "MARK: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
return 0;
return 1;
static struct ip6t_target ip6t_mark_reg
= { { NULL, NULL }, "MARK", target, checkentry, NULL, THIS_MODULE };
static int __init init(void)
printk(KERN_DEBUG "registering ipv6 mark target\n");
if (ip6t_register_target(&ip6t_mark_reg))
return -EINVAL;
return 0;
static void __exit fini(void)