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Commit c3b33e6a authored by Jan Engelhardt's avatar Jan Engelhardt Committed by David S. Miller
Browse files

[NETFILTER]: Merge ipt_tos into xt_dscp 



Merge ipt_tos into xt_dscp.

Merge ipt_tos (tos v0 match) into xt_dscp. They both match on the same
field in the IPv4 header, so it seems reasonable to keep them in one
piece. This is part one of the implicit 4-patch series to move tos to
xtables and extend it by IPv6.

Signed-off-by: default avatarJan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3c3f4866

net/ipv4/netfilter/Kconfig

+0 −9
Original line number Diff line number Diff line
@@ -63,15 +63,6 @@ config IP_NF_MATCH_IPRANGE 


	  To compile it as a module, choose M here.  If unsure, say N.



config IP_NF_MATCH_TOS

	tristate "TOS match support"

	depends on IP_NF_IPTABLES

	help

	  TOS matching allows you to match packets based on the Type Of

	  Service fields of the IP packet.



	  To compile it as a module, choose M here.  If unsure, say N.



config IP_NF_MATCH_RECENT

	tristate '"recent" match support'

	depends on IP_NF_IPTABLES

net/ipv4/netfilter/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -46,7 +46,6 @@ obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o 
obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o

obj-$(CONFIG_IP_NF_MATCH_IPRANGE) += ipt_iprange.o

obj-$(CONFIG_IP_NF_MATCH_RECENT) += ipt_recent.o

obj-$(CONFIG_IP_NF_MATCH_TOS) += ipt_tos.o

obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o



# targets

net/ipv4/netfilter/ipt_tos.c

deleted100644 → 0
+0 −50
Original line number Diff line number Diff line 
/* Kernel module to match TOS values. */



/* (C) 1999-2001 Paul `Rusty' Russell

 * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>

 *

 * 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/ip.h>

#include <linux/module.h>

#include <linux/skbuff.h>



#include <linux/netfilter_ipv4/ipt_tos.h>

#include <linux/netfilter/x_tables.h>



MODULE_LICENSE("GPL");

MODULE_DESCRIPTION("iptables TOS match module");



static bool

tos_mt(const struct sk_buff *skb, const struct net_device *in,

       const struct net_device *out, const struct xt_match *match,

       const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop)

{

	const struct ipt_tos_info *info = matchinfo;



	return (ip_hdr(skb)->tos == info->tos) ^ info->invert;

}



static struct xt_match tos_mt_reg __read_mostly = {

	.name		= "tos",

	.family		= AF_INET,

	.match		= tos_mt,

	.matchsize	= sizeof(struct ipt_tos_info),

	.me		= THIS_MODULE,

};



static int __init tos_mt_init(void)

{

	return xt_register_match(&tos_mt_reg);

}



static void __exit tos_mt_exit(void)

{

	xt_unregister_match(&tos_mt_reg);

}



module_init(tos_mt_init);

module_exit(tos_mt_exit);

net/netfilter/Kconfig

+5 −1
Original line number Diff line number Diff line
@@ -487,7 +487,7 @@ config NETFILTER_XT_MATCH_DCCP 
	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.



config NETFILTER_XT_MATCH_DSCP

	tristate '"dscp" match support'

	tristate '"dscp" and "tos" match support'

	depends on NETFILTER_XTABLES

	help

	  This option adds a `DSCP' match, which allows you to match against
@@ -495,6 +495,10 @@ config NETFILTER_XT_MATCH_DSCP 


	  The DSCP field can have any value between 0x0 and 0x3f inclusive.



	  It will also add a "tos" match, which allows you to match packets

	  based on the Type Of Service fields of the IPv4 packet (which share

	  the same bits as DSCP).



	  To compile it as a module, choose M here.  If unsure, say N.



config NETFILTER_XT_MATCH_ESP

net/netfilter/xt_dscp.c

+22 −2
Original line number Diff line number Diff line
@@ -13,14 +13,16 @@ 
#include <linux/ipv6.h>

#include <net/dsfield.h>



#include <linux/netfilter/xt_dscp.h>

#include <linux/netfilter/x_tables.h>

#include <linux/netfilter/xt_dscp.h>

#include <linux/netfilter_ipv4/ipt_tos.h>



MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");

MODULE_DESCRIPTION("x_tables DSCP matching module");

MODULE_DESCRIPTION("x_tables DSCP/tos matching module");

MODULE_LICENSE("GPL");

MODULE_ALIAS("ipt_dscp");

MODULE_ALIAS("ip6t_dscp");

MODULE_ALIAS("ipt_tos");



static bool

dscp_mt(const struct sk_buff *skb, const struct net_device *in,
@@ -60,6 +62,16 @@ dscp_mt_check(const char *tablename, const void *info, 
	return true;

}



static bool tos_mt_v0(const struct sk_buff *skb, const struct net_device *in,

                      const struct net_device *out,

                      const struct xt_match *match, const void *matchinfo,

                      int offset, unsigned int protoff, bool *hotdrop)

{

	const struct ipt_tos_info *info = matchinfo;



	return (ip_hdr(skb)->tos == info->tos) ^ info->invert;

}



static struct xt_match dscp_mt_reg[] __read_mostly = {

	{

		.name		= "dscp",
@@ -77,6 +89,14 @@ static struct xt_match dscp_mt_reg[] __read_mostly = { 
		.matchsize	= sizeof(struct xt_dscp_info),

		.me		= THIS_MODULE,

	},

	{

		.name		= "tos",

		.revision	= 0,

		.family		= AF_INET,

		.match		= tos_mt_v0,

		.matchsize	= sizeof(struct ipt_tos_info),

		.me		= THIS_MODULE,

	},

};



static int __init dscp_mt_init(void)