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17b0d7ef JE |
1 | /* |
2 | * xt_mark - Netfilter module to match NFMARK value | |
3 | * | |
4 | * (C) 1999-2001 Marc Boucher <marc@mbsi.ca> | |
5 | * Copyright © CC Computer Consultants GmbH, 2007 - 2008 | |
4725c728 | 6 | * Jan Engelhardt <jengelh@medozas.de> |
1da177e4 | 7 | * |
17b0d7ef JE |
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. | |
1da177e4 LT |
11 | */ |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/skbuff.h> | |
15 | ||
2e4e6a17 HW |
16 | #include <linux/netfilter/xt_mark.h> |
17 | #include <linux/netfilter/x_tables.h> | |
1da177e4 LT |
18 | |
19 | MODULE_LICENSE("GPL"); | |
20 | MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>"); | |
2ae15b64 | 21 | MODULE_DESCRIPTION("Xtables: packet mark match"); |
2e4e6a17 HW |
22 | MODULE_ALIAS("ipt_mark"); |
23 | MODULE_ALIAS("ip6t_mark"); | |
1da177e4 | 24 | |
1d93a9cb | 25 | static bool |
f7108a20 | 26 | mark_mt(const struct sk_buff *skb, const struct xt_match_param *par) |
1da177e4 | 27 | { |
f7108a20 | 28 | const struct xt_mark_mtinfo1 *info = par->matchinfo; |
1da177e4 | 29 | |
82e91ffe | 30 | return ((skb->mark & info->mask) == info->mark) ^ info->invert; |
1da177e4 LT |
31 | } |
32 | ||
4725c728 JE |
33 | static struct xt_match mark_mt_reg __read_mostly = { |
34 | .name = "mark", | |
35 | .revision = 1, | |
36 | .family = NFPROTO_UNSPEC, | |
37 | .match = mark_mt, | |
38 | .matchsize = sizeof(struct xt_mark_mtinfo1), | |
39 | .me = THIS_MODULE, | |
1da177e4 LT |
40 | }; |
41 | ||
d3c5ee6d | 42 | static int __init mark_mt_init(void) |
1da177e4 | 43 | { |
4725c728 | 44 | return xt_register_match(&mark_mt_reg); |
1da177e4 LT |
45 | } |
46 | ||
d3c5ee6d | 47 | static void __exit mark_mt_exit(void) |
1da177e4 | 48 | { |
4725c728 | 49 | xt_unregister_match(&mark_mt_reg); |
1da177e4 LT |
50 | } |
51 | ||
d3c5ee6d JE |
52 | module_init(mark_mt_init); |
53 | module_exit(mark_mt_exit); |