projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b3f644fc PM |
1 | /* |
| 2 | * Copyright (c) 2011 Patrick McHardy <kaber@trash.net> | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * Based on Rusty Russell's IPv6 MASQUERADE target. Development of IPv6 | |
| 9 | * NAT funded by Astaro. | |
| 10 | */ | |
| 11 | ||
| 12 | #include <linux/kernel.h> | |
| 13 | #include <linux/module.h> | |
| 14 | #include <linux/netdevice.h> | |
| 15 | #include <linux/ipv6.h> | |
| 16 | #include <linux/netfilter.h> | |
| 17 | #include <linux/netfilter_ipv6.h> | |
| 18 | #include <linux/netfilter/x_tables.h> | |
| 19 | #include <net/netfilter/nf_nat.h> | |
| 20 | #include <net/addrconf.h> | |
| 21 | #include <net/ipv6.h> | |
| be6b635c | 22 | #include <net/netfilter/ipv6/nf_nat_masquerade.h> |
| b3f644fc PM |
23 | |
| 24 | static unsigned int | |
| 25 | masquerade_tg6(struct sk_buff *skb, const struct xt_action_param *par) | |
| 26 | { | |
| be6b635c | 27 | return nf_nat_masquerade_ipv6(skb, par->targinfo, par->out); |
| b3f644fc PM |
28 | } |
| 29 | ||
| 30 | static int masquerade_tg6_checkentry(const struct xt_tgchk_param *par) | |
| 31 | { | |
| 32 | const struct nf_nat_range *range = par->targinfo; | |
| 33 | ||
| 34 | if (range->flags & NF_NAT_RANGE_MAP_IPS) | |
| 35 | return -EINVAL; | |
| 36 | return 0; | |
| 37 | } | |
| 38 | ||
| b3f644fc PM |
39 | static struct xt_target masquerade_tg6_reg __read_mostly = { |
| 40 | .name = "MASQUERADE", | |
| 41 | .family = NFPROTO_IPV6, | |
| 42 | .checkentry = masquerade_tg6_checkentry, | |
| 43 | .target = masquerade_tg6, | |
| 44 | .targetsize = sizeof(struct nf_nat_range), | |
| 45 | .table = "nat", | |
| 46 | .hooks = 1 << NF_INET_POST_ROUTING, | |
| 47 | .me = THIS_MODULE, | |
| 48 | }; | |
| 49 | ||
| 50 | static int __init masquerade_tg6_init(void) | |
| 51 | { | |
| 52 | int err; | |
| 53 | ||
| 54 | err = xt_register_target(&masquerade_tg6_reg); | |
| be6b635c AB |
55 | if (err == 0) |
| 56 | nf_nat_masquerade_ipv6_register_notifier(); | |
| b3f644fc PM |
57 | |
| 58 | return err; | |
| 59 | } | |
| 60 | static void __exit masquerade_tg6_exit(void) | |
| 61 | { | |
| be6b635c | 62 | nf_nat_masquerade_ipv6_unregister_notifier(); |
| b3f644fc PM |
63 | xt_unregister_target(&masquerade_tg6_reg); |
| 64 | } | |
| 65 | ||
| 66 | module_init(masquerade_tg6_init); | |
| 67 | module_exit(masquerade_tg6_exit); | |
| 68 | ||
| 69 | MODULE_LICENSE("GPL"); | |
| 70 | MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>"); | |
| 71 | MODULE_DESCRIPTION("Xtables: automatic address SNAT"); |