2008-01-15 07:41:11 +00:00
|
|
|
/*
|
|
|
|
* xt_mark - Netfilter module to match NFMARK value
|
|
|
|
*
|
|
|
|
* (C) 1999-2001 Marc Boucher <marc@mbsi.ca>
|
|
|
|
* Copyright © CC Computer Consultants GmbH, 2007 - 2008
|
2009-06-12 17:02:27 +00:00
|
|
|
* Jan Engelhardt <jengelh@medozas.de>
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2008-01-15 07:41:11 +00:00
|
|
|
* 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.
|
2005-04-16 22:20:36 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/skbuff.h>
|
|
|
|
|
[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
|
|
|
#include <linux/netfilter/xt_mark.h>
|
|
|
|
#include <linux/netfilter/x_tables.h>
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");
|
2009-02-28 02:23:57 +00:00
|
|
|
MODULE_DESCRIPTION("Xtables: packet mark operations");
|
[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
|
|
|
MODULE_ALIAS("ipt_mark");
|
|
|
|
MODULE_ALIAS("ip6t_mark");
|
2009-02-28 02:23:57 +00:00
|
|
|
MODULE_ALIAS("ipt_MARK");
|
|
|
|
MODULE_ALIAS("ip6t_MARK");
|
2015-04-17 02:21:32 +00:00
|
|
|
MODULE_ALIAS("arpt_MARK");
|
2009-02-28 02:23:57 +00:00
|
|
|
|
|
|
|
static unsigned int
|
2009-07-05 17:43:26 +00:00
|
|
|
mark_tg(struct sk_buff *skb, const struct xt_action_param *par)
|
2009-02-28 02:23:57 +00:00
|
|
|
{
|
|
|
|
const struct xt_mark_tginfo2 *info = par->targinfo;
|
|
|
|
|
|
|
|
skb->mark = (skb->mark & ~info->mask) ^ info->mark;
|
|
|
|
return XT_CONTINUE;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-07-08 05:15:35 +00:00
|
|
|
static bool
|
2009-07-07 18:42:08 +00:00
|
|
|
mark_mt(const struct sk_buff *skb, struct xt_action_param *par)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2008-10-08 09:35:18 +00:00
|
|
|
const struct xt_mark_mtinfo1 *info = par->matchinfo;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-11-09 23:19:14 +00:00
|
|
|
return ((skb->mark & info->mask) == info->mark) ^ info->invert;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2009-02-28 02:23:57 +00:00
|
|
|
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,
|
|
|
|
};
|
|
|
|
|
2009-06-12 17:02:27 +00:00
|
|
|
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,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
2007-12-05 07:24:03 +00:00
|
|
|
static int __init mark_mt_init(void)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2009-02-28 02:23:57 +00:00
|
|
|
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;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-12-05 07:24:03 +00:00
|
|
|
static void __exit mark_mt_exit(void)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2009-06-12 17:02:27 +00:00
|
|
|
xt_unregister_match(&mark_mt_reg);
|
2009-02-28 02:23:57 +00:00
|
|
|
xt_unregister_target(&mark_tg_reg);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2007-12-05 07:24:03 +00:00
|
|
|
module_init(mark_mt_init);
|
|
|
|
module_exit(mark_mt_exit);
|