Commit e07d39a4 authored by Patrick McHardy's avatar Patrick McHardy

[NETFILTER]: Add realm match

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarHarald Welte <laforge@netfilter.org>
Signed-off-by: default avatarDavid S. Miller <davem@redhat.com>
parent fd4daaf7
#ifndef _IPT_REALM_H
#define _IPT_REALM_H
struct ipt_realm_info {
u_int32_t id;
u_int32_t mask;
u_int8_t invert;
};
#endif /* _IPT_REALM_H */
......@@ -613,5 +613,19 @@ config IP_NF_MATCH_ADDRTYPE
If you want to compile it as a module, say M here and read
Documentation/modules.txt. If unsure, say `N'.
config IP_NF_MATCH_REALM
tristate 'realm match support'
depends on IP_NF_IPTABLES
select NET_CLS_ROUTE
help
This option adds a `realm' match, which allows you to use the realm
key from the routing subsytem inside iptables.
This match pretty much resembles the CONFIG_NET_CLS_ROUTE4 option
in tc world.
If you want to compile it as a module, say M here and read
Documentation/modules.txt. If unsure, say `N'.
endmenu
......@@ -64,6 +64,7 @@ obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o
obj-$(CONFIG_IP_NF_MATCH_STATE) += ipt_state.o
obj-$(CONFIG_IP_NF_MATCH_CONNTRACK) += ipt_conntrack.o
obj-$(CONFIG_IP_NF_MATCH_TCPMSS) += ipt_tcpmss.o
obj-$(CONFIG_IP_NF_MATCH_REALM) += ipt_realm.o
obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o
obj-$(CONFIG_IP_NF_MATCH_PHYSDEV) += ipt_physdev.o
......
/* IP tables module for matching the routing realm
*
* $Id: ipt_realm.c,v 1.3 2004/03/05 13:25:40 laforge Exp $
*
* (C) 2003 by Sampsa Ranta <sampsa@netsonic.fi>
*
* 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/netdevice.h>
#include <net/route.h>
#include <linux/netfilter_ipv4/ipt_realm.h>
#include <linux/netfilter_ipv4/ip_tables.h>
MODULE_AUTHOR("Sampsa Ranta <sampsa@netsonic.fi>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("iptables realm match");
static int
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
const void *matchinfo,
int offset,
int *hotdrop)
{
const struct ipt_realm_info *info = matchinfo;
struct dst_entry *dst = skb->dst;
return (info->id == (dst->tclassid & info->mask)) ^ info->invert;
}
static int check(const char *tablename,
const struct ipt_ip *ip,
void *matchinfo,
unsigned int matchsize,
unsigned int hook_mask)
{
if (hook_mask
& ~((1 << NF_IP_POST_ROUTING) | (1 << NF_IP_FORWARD) |
(1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_LOCAL_IN))) {
printk("ipt_realm: only valid for POST_ROUTING, LOCAL_OUT, "
"LOCAL_IN or FORWARD.\n");
return 0;
}
if (matchsize != IPT_ALIGN(sizeof(struct ipt_realm_info))) {
printk("ipt_realm: invalid matchsize.\n");
return 0;
}
return 1;
}
static struct ipt_match realm_match = {
.name = "realm",
.match = match,
.checkentry = check,
.me = THIS_MODULE
};
static int __init init(void)
{
return ipt_register_match(&realm_match);
}
static void __exit fini(void)
{
ipt_unregister_match(&realm_match);
}
module_init(init);
module_exit(fini);
......@@ -242,6 +242,7 @@ config NET_CLS_TCINDEX
config NET_CLS_ROUTE4
tristate "Routing table based classifier"
depends on NET_CLS
select NET_CLS_ROUTE
help
If you say Y here, you will be able to classify outgoing packets
according to the route table entry they matched. If unsure, say Y.
......@@ -251,8 +252,7 @@ config NET_CLS_ROUTE4
config NET_CLS_ROUTE
bool
depends on NET_CLS_ROUTE4
default y
default n
config NET_CLS_FW
tristate "Firewall based classifier"
......
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