From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- net/netfilter/xt_mark.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 net/netfilter/xt_mark.c (limited to 'net/netfilter/xt_mark.c') diff --git a/net/netfilter/xt_mark.c b/net/netfilter/xt_mark.c new file mode 100644 index 000000000..233452387 --- /dev/null +++ b/net/netfilter/xt_mark.c @@ -0,0 +1,84 @@ +/* + * xt_mark - Netfilter module to match NFMARK value + * + * (C) 1999-2001 Marc Boucher + * Copyright © CC Computer Consultants GmbH, 2007 - 2008 + * Jan Engelhardt + * + * 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 +#include + +#include +#include + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Marc Boucher "); +MODULE_DESCRIPTION("Xtables: packet mark operations"); +MODULE_ALIAS("ipt_mark"); +MODULE_ALIAS("ip6t_mark"); +MODULE_ALIAS("ipt_MARK"); +MODULE_ALIAS("ip6t_MARK"); + +static unsigned int +mark_tg(struct sk_buff *skb, const struct xt_action_param *par) +{ + const struct xt_mark_tginfo2 *info = par->targinfo; + + skb->mark = (skb->mark & ~info->mask) ^ info->mark; + return XT_CONTINUE; +} + +static bool +mark_mt(const struct sk_buff *skb, struct xt_action_param *par) +{ + const struct xt_mark_mtinfo1 *info = par->matchinfo; + + return ((skb->mark & info->mask) == info->mark) ^ info->invert; +} + +static struct xt_target mark_tg_reg __read_mostly = { + .name = "MARK", + .revision = 2, + .family = NFPROTO_UNSPEC, + .target = mark_tg, + .targetsize = sizeof(struct xt_mark_tginfo2), + .me = THIS_MODULE, +}; + +static struct xt_match mark_mt_reg __read_mostly = { + .name = "mark", + .revision = 1, + .family = NFPROTO_UNSPEC, + .match = mark_mt, + .matchsize = sizeof(struct xt_mark_mtinfo1), + .me = THIS_MODULE, +}; + +static int __init mark_mt_init(void) +{ + int ret; + + ret = xt_register_target(&mark_tg_reg); + if (ret < 0) + return ret; + ret = xt_register_match(&mark_mt_reg); + if (ret < 0) { + xt_unregister_target(&mark_tg_reg); + return ret; + } + return 0; +} + +static void __exit mark_mt_exit(void) +{ + xt_unregister_match(&mark_mt_reg); + xt_unregister_target(&mark_tg_reg); +} + +module_init(mark_mt_init); +module_exit(mark_mt_exit); -- cgit v1.2.3-54-g00ecf