2005-04-17 06:20:36 +08:00
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/* This is a module which is used for setting the NFMARK field of an skb. */
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/* (C) 1999-2001 Marc Boucher <marc@mbsi.ca>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/ip.h>
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#include <net/checksum.h>
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#include <linux/netfilter_ipv6/ip6_tables.h>
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#include <linux/netfilter_ipv6/ip6t_MARK.h>
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
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static unsigned int
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target(struct sk_buff **pskb,
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const struct net_device *in,
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const struct net_device *out,
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unsigned int hooknum,
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const void *targinfo,
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void *userinfo)
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{
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const struct ip6t_mark_target_info *markinfo = targinfo;
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2005-08-10 10:24:19 +08:00
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if((*pskb)->nfmark != markinfo->mark)
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2005-04-17 06:20:36 +08:00
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(*pskb)->nfmark = markinfo->mark;
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2005-08-10 10:24:19 +08:00
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2005-04-17 06:20:36 +08:00
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return IP6T_CONTINUE;
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}
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static int
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checkentry(const char *tablename,
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const struct ip6t_entry *e,
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void *targinfo,
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unsigned int targinfosize,
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unsigned int hook_mask)
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{
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if (targinfosize != IP6T_ALIGN(sizeof(struct ip6t_mark_target_info))) {
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printk(KERN_WARNING "MARK: targinfosize %u != %Zu\n",
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targinfosize,
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IP6T_ALIGN(sizeof(struct ip6t_mark_target_info)));
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return 0;
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}
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if (strcmp(tablename, "mangle") != 0) {
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printk(KERN_WARNING "MARK: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
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return 0;
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}
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return 1;
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}
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static struct ip6t_target ip6t_mark_reg
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= { { NULL, NULL }, "MARK", target, checkentry, NULL, THIS_MODULE };
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static int __init init(void)
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{
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printk(KERN_DEBUG "registering ipv6 mark target\n");
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if (ip6t_register_target(&ip6t_mark_reg))
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return -EINVAL;
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return 0;
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}
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static void __exit fini(void)
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{
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ip6t_unregister_target(&ip6t_mark_reg);
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}
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module_init(init);
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module_exit(fini);
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