/* * xt_MARK - Netfilter module to modify the NFMARK field of an skb * * (C) 1999-2001 Marc Boucher <marc@mbsi.ca> * Copyright © CC Computer Consultants GmbH, 2007 - 2008 * Jan Engelhardt <jengelh@computergmbh.de> * * 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 <linux/module.h> #include <linux/skbuff.h> #include <linux/ip.h> #include <net/checksum.h> #include <linux/netfilter/x_tables.h> #include <linux/netfilter/xt_MARK.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>"); MODULE_DESCRIPTION("Xtables: packet mark modification"); MODULE_ALIAS("ipt_MARK"); MODULE_ALIAS("ip6t_MARK"); static unsigned int mark_tg(struct sk_buff *skb, const struct xt_target_param *par) { const struct xt_mark_tginfo2 *info = par->targinfo; skb->mark = (skb->mark & ~info->mask) ^ info->mark; return XT_CONTINUE; } 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 int __init mark_tg_init(void) { return xt_register_target(&mark_tg_reg); } static void __exit mark_tg_exit(void) { xt_unregister_target(&mark_tg_reg); } module_init(mark_tg_init); module_exit(mark_tg_exit);