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- /*
- * Copyright (c) 2011 Patrick McHardy <kaber@trash.net>
- *
- * 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.
- *
- * Based on Rusty Russell's IPv6 MASQUERADE target. Development of IPv6
- * NAT funded by Astaro.
- */
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/netdevice.h>
- #include <linux/ipv6.h>
- #include <linux/netfilter.h>
- #include <linux/netfilter_ipv6.h>
- #include <linux/netfilter/x_tables.h>
- #include <net/netfilter/nf_nat.h>
- #include <net/addrconf.h>
- #include <net/ipv6.h>
- #include <net/netfilter/ipv6/nf_nat_masquerade.h>
- static unsigned int
- masquerade_tg6(struct sk_buff *skb, const struct xt_action_param *par)
- {
- return nf_nat_masquerade_ipv6(skb, par->targinfo, par->out);
- }
- static int masquerade_tg6_checkentry(const struct xt_tgchk_param *par)
- {
- const struct nf_nat_range *range = par->targinfo;
- if (range->flags & NF_NAT_RANGE_MAP_IPS)
- return -EINVAL;
- return 0;
- }
- static struct xt_target masquerade_tg6_reg __read_mostly = {
- .name = "MASQUERADE",
- .family = NFPROTO_IPV6,
- .checkentry = masquerade_tg6_checkentry,
- .target = masquerade_tg6,
- .targetsize = sizeof(struct nf_nat_range),
- .table = "nat",
- .hooks = 1 << NF_INET_POST_ROUTING,
- .me = THIS_MODULE,
- };
- static int __init masquerade_tg6_init(void)
- {
- int err;
- err = xt_register_target(&masquerade_tg6_reg);
- if (err == 0)
- nf_nat_masquerade_ipv6_register_notifier();
- return err;
- }
- static void __exit masquerade_tg6_exit(void)
- {
- nf_nat_masquerade_ipv6_unregister_notifier();
- xt_unregister_target(&masquerade_tg6_reg);
- }
- module_init(masquerade_tg6_init);
- module_exit(masquerade_tg6_exit);
- MODULE_LICENSE("GPL");
- MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
- MODULE_DESCRIPTION("Xtables: automatic address SNAT");
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