Merge ipt_TOS into xt_DSCP.
Merge ipt_TOS (tos v0 target) into xt_DSCP. They both modify the same
field in the IPv4 header, so it seems reasonable to keep them in one
piece. This is part two of the implicit 4-patch series to move tos to
xtables and extend it by IPv6.
Signed-off-by: Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx>
---
net/ipv4/netfilter/Kconfig | 10 -----
net/ipv4/netfilter/Makefile | 1
net/ipv4/netfilter/ipt_TOS.c | 82 -------------------------------------------
net/netfilter/Kconfig | 6 ++-
net/netfilter/xt_DSCP.c | 51 ++++++++++++++++++++++++++
5 files changed, 56 insertions(+), 94 deletions(-)
Index: linux-2.6/net/ipv4/netfilter/Kconfig
===================================================================
--- linux-2.6.orig/net/ipv4/netfilter/Kconfig
+++ linux-2.6/net/ipv4/netfilter/Kconfig
@@ -293,16 +293,6 @@ config IP_NF_MANGLE
To compile it as a module, choose M here. If unsure, say N.
-config IP_NF_TARGET_TOS
- tristate "TOS target support"
- depends on IP_NF_MANGLE
- help
- This option adds a `TOS' target, which allows you to create rules in
- the `mangle' table which alter the Type Of Service field of an IP
- packet prior to routing.
-
- To compile it as a module, choose M here. If unsure, say N.
-
config IP_NF_TARGET_ECN
tristate "ECN target support"
depends on IP_NF_MANGLE
Index: linux-2.6/net/ipv4/netfilter/Makefile
===================================================================
--- linux-2.6.orig/net/ipv4/netfilter/Makefile
+++ linux-2.6/net/ipv4/netfilter/Makefile
@@ -57,7 +57,6 @@ obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt
obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
obj-$(CONFIG_IP_NF_TARGET_SAME) += ipt_SAME.o
-obj-$(CONFIG_IP_NF_TARGET_TOS) += ipt_TOS.o
obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o
obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o
Index: linux-2.6/net/ipv4/netfilter/ipt_TOS.c
===================================================================
--- linux-2.6.orig/net/ipv4/netfilter/ipt_TOS.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/* This is a module which is used for setting the TOS field of a packet. */
-
-/* (C) 1999-2001 Paul `Rusty' Russell
- * (C) 2002-2004 Netfilter Core Team <coreteam@xxxxxxxxxxxxx>
- *
- * 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_ipv4/ipt_TOS.h>
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Netfilter Core Team <coreteam@xxxxxxxxxxxxx>");
-MODULE_DESCRIPTION("iptables TOS mangling module");
-
-static unsigned int
-tos_tg(struct sk_buff *skb, const struct net_device *in,
- const struct net_device *out, unsigned int hooknum,
- const struct xt_target *target, const void *targinfo)
-{
- const struct ipt_tos_target_info *tosinfo = targinfo;
- struct iphdr *iph = ip_hdr(skb);
-
- if ((iph->tos & IPTOS_TOS_MASK) != tosinfo->tos) {
- __u8 oldtos;
- if (!skb_make_writable(skb, sizeof(struct iphdr)))
- return NF_DROP;
- iph = ip_hdr(skb);
- oldtos = iph->tos;
- iph->tos = (iph->tos & IPTOS_PREC_MASK) | tosinfo->tos;
- nf_csum_replace2(&iph->check, htons(oldtos), htons(iph->tos));
- }
- return XT_CONTINUE;
-}
-
-static bool
-tos_tg_check(const char *tablename, const void *e_void,
- const struct xt_target *target, void *targinfo,
- unsigned int hook_mask)
-{
- const u_int8_t tos = ((struct ipt_tos_target_info *)targinfo)->tos;
-
- if (tos != IPTOS_LOWDELAY
- && tos != IPTOS_THROUGHPUT
- && tos != IPTOS_RELIABILITY
- && tos != IPTOS_MINCOST
- && tos != IPTOS_NORMALSVC) {
- printk(KERN_WARNING "TOS: bad tos value %#x\n", tos);
- return false;
- }
- return true;
-}
-
-static struct xt_target tos_tg_reg __read_mostly = {
- .name = "TOS",
- .family = AF_INET,
- .target = tos_tg,
- .targetsize = sizeof(struct ipt_tos_target_info),
- .table = "mangle",
- .checkentry = tos_tg_check,
- .me = THIS_MODULE,
-};
-
-static int __init tos_tg_init(void)
-{
- return xt_register_target(&tos_tg_reg);
-}
-
-static void __exit tos_tg_exit(void)
-{
- xt_unregister_target(&tos_tg_reg);
-}
-
-module_init(tos_tg_init);
-module_exit(tos_tg_exit);
Index: linux-2.6/net/netfilter/Kconfig
===================================================================
--- linux-2.6.orig/net/netfilter/Kconfig
+++ linux-2.6/net/netfilter/Kconfig
@@ -293,7 +293,7 @@ config NETFILTER_XT_TARGET_CONNMARK
ipt_CONNMARK.ko. If unsure, say `N'.
config NETFILTER_XT_TARGET_DSCP
- tristate '"DSCP" target support'
+ tristate '"DSCP" and "TOS" target support'
depends on NETFILTER_XTABLES
depends on IP_NF_MANGLE || IP6_NF_MANGLE
help
@@ -302,6 +302,10 @@ config NETFILTER_XT_TARGET_DSCP
The DSCP field can have any value between 0x0 and 0x3f inclusive.
+ It also adds the "TOS" target, which allows you to create rules in
+ the "mangle" table which alter the Type Of Service field of an IPv4
+ packet prior to routing.
+
To compile it as a module, choose M here. If unsure, say N.
config NETFILTER_XT_TARGET_MARK
Index: linux-2.6/net/netfilter/xt_DSCP.c
===================================================================
--- linux-2.6.orig/net/netfilter/xt_DSCP.c
+++ linux-2.6/net/netfilter/xt_DSCP.c
@@ -18,12 +18,14 @@
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_DSCP.h>
+#include <linux/netfilter_ipv4/ipt_TOS.h>
MODULE_AUTHOR("Harald Welte <laforge@xxxxxxxxxxxxx>");
MODULE_DESCRIPTION("x_tables DSCP modification module");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ipt_DSCP");
MODULE_ALIAS("ip6t_DSCP");
+MODULE_ALIAS("ipt_TOS");
static unsigned int
dscp_tg(struct sk_buff *skb, const struct net_device *in,
@@ -76,6 +78,45 @@ dscp_tg_check(const char *tablename, con
return true;
}
+static unsigned int
+tos_tg_v0(struct sk_buff *skb, const struct net_device *in,
+ const struct net_device *out, unsigned int hooknum,
+ const struct xt_target *target, const void *targinfo)
+{
+ const struct ipt_tos_target_info *info = targinfo;
+ struct iphdr *iph = ip_hdr(skb);
+ u_int8_t oldtos;
+
+ if ((iph->tos & IPTOS_TOS_MASK) != info->tos) {
+ if (!skb_make_writable(skb, sizeof(struct iphdr)))
+ return NF_DROP;
+
+ iph = ip_hdr(skb);
+ oldtos = iph->tos;
+ iph->tos = (iph->tos & IPTOS_PREC_MASK) | info->tos;
+ nf_csum_replace2(&iph->check, htons(oldtos), htons(iph->tos));
+ }
+
+ return XT_CONTINUE;
+}
+
+static bool
+tos_tg_check_v0(const char *tablename, const void *e_void,
+ const struct xt_target *target, void *targinfo,
+ unsigned int hook_mask)
+{
+ const u_int8_t tos = ((struct ipt_tos_target_info *)targinfo)->tos;
+
+ if (tos != IPTOS_LOWDELAY && tos != IPTOS_THROUGHPUT &&
+ tos != IPTOS_RELIABILITY && tos != IPTOS_MINCOST &&
+ tos != IPTOS_NORMALSVC) {
+ printk(KERN_WARNING "TOS: bad tos value %#x\n", tos);
+ return false;
+ }
+
+ return true;
+}
+
static struct xt_target dscp_tg_reg[] __read_mostly = {
{
.name = "DSCP",
@@ -95,6 +136,16 @@ static struct xt_target dscp_tg_reg[] __
.table = "mangle",
.me = THIS_MODULE,
},
+ {
+ .name = "TOS",
+ .revision = 0,
+ .family = AF_INET,
+ .table = "mangle",
+ .target = tos_tg_v0,
+ .targetsize = sizeof(struct ipt_tos_target_info),
+ .checkentry = tos_tg_check_v0,
+ .me = THIS_MODULE,
+ },
};
static int __init dscp_tg_init(void)
-
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