2008-01-15 07:38:52 +00:00
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/*
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* xt_MARK - Netfilter module to modify the NFMARK field of an skb
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*
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* (C) 1999-2001 Marc Boucher <marc@mbsi.ca>
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* Copyright © CC Computer Consultants GmbH, 2007 - 2008
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* Jan Engelhardt <jengelh@computergmbh.de>
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2005-04-16 22:20:36 +00:00
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*
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2008-01-15 07:38:52 +00:00
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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2005-04-16 22:20:36 +00:00
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*/
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/ip.h>
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#include <net/checksum.h>
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[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
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#include <linux/netfilter/x_tables.h>
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#include <linux/netfilter/xt_MARK.h>
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2005-04-16 22:20:36 +00:00
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");
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2008-01-15 07:42:28 +00:00
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MODULE_DESCRIPTION("Xtables: packet mark modification");
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[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
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MODULE_ALIAS("ipt_MARK");
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MODULE_ALIAS("ip6t_MARK");
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2005-04-16 22:20:36 +00:00
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2008-01-15 07:38:52 +00:00
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static unsigned int
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2008-10-08 09:35:19 +00:00
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mark_tg(struct sk_buff *skb, const struct xt_target_param *par)
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2008-01-15 07:38:52 +00:00
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{
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2008-10-08 09:35:19 +00:00
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const struct xt_mark_tginfo2 *info = par->targinfo;
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2008-01-15 07:38:52 +00:00
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skb->mark = (skb->mark & ~info->mask) ^ info->mark;
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return XT_CONTINUE;
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}
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2009-06-12 16:47:32 +00:00
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static struct xt_target mark_tg_reg __read_mostly = {
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.name = "MARK",
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.revision = 2,
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.family = NFPROTO_UNSPEC,
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.target = mark_tg,
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.targetsize = sizeof(struct xt_mark_tginfo2),
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.me = THIS_MODULE,
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[NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables. In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.
o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
are now implemented as xt_FOOBAR.c files and provide module aliases
to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
around the xt_FOOBAR.h headers
Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 21:30:04 +00:00
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};
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2007-12-05 07:24:03 +00:00
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static int __init mark_tg_init(void)
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2005-04-16 22:20:36 +00:00
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{
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2009-06-12 16:47:32 +00:00
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return xt_register_target(&mark_tg_reg);
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2005-04-16 22:20:36 +00:00
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}
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2007-12-05 07:24:03 +00:00
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static void __exit mark_tg_exit(void)
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2005-04-16 22:20:36 +00:00
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{
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2009-06-12 16:47:32 +00:00
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xt_unregister_target(&mark_tg_reg);
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2005-04-16 22:20:36 +00:00
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}
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2007-12-05 07:24:03 +00:00
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module_init(mark_tg_init);
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module_exit(mark_tg_exit);
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