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authorJo-Philipp Wich <jow@openwrt.org>2014-08-01 22:49:47 +0000
committerJo-Philipp Wich <jow@openwrt.org>2014-08-01 22:49:47 +0000
commitbaa7c211f5545c4ccc1029991dfca34584cfa221 (patch)
tree9234641fbb37b4c0d011092e3e99d1a5ef6c1ae0 /target/linux/generic/patches-3.8
parent930e3e7ca30c899d73390fcc8ade503bc249de37 (diff)
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netfilter: introduce xt_id match
This commit implements a new netfilter match "xt_id" which can be used to attach unsigned 32bit IDs to iptables rules. Signed-off-by: Jo-Philipp Wich <jow@openwrt.org> SVN-Revision: 41945
Diffstat (limited to 'target/linux/generic/patches-3.8')
-rw-r--r--target/linux/generic/patches-3.8/615-netfilter_add_xt_id_match.patch95
1 files changed, 95 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.8/615-netfilter_add_xt_id_match.patch b/target/linux/generic/patches-3.8/615-netfilter_add_xt_id_match.patch
new file mode 100644
index 0000000000..2251a872da
--- /dev/null
+++ b/target/linux/generic/patches-3.8/615-netfilter_add_xt_id_match.patch
@@ -0,0 +1,95 @@
+--- a/include/uapi/linux/netfilter/Kbuild
++++ b/include/uapi/linux/netfilter/Kbuild
+@@ -49,6 +49,7 @@ header-y += xt_ecn.h
+ header-y += xt_esp.h
+ header-y += xt_hashlimit.h
+ header-y += xt_helper.h
++header-y += xt_id.h
+ header-y += xt_iprange.h
+ header-y += xt_ipvs.h
+ header-y += xt_layer7.h
+--- /dev/null
++++ b/include/uapi/linux/netfilter/xt_id.h
+@@ -0,0 +1,8 @@
++#ifndef _XT_ID_H
++#define _XT_ID_H
++
++struct xt_id_info {
++ u32 id;
++};
++
++#endif /* XT_ID_H */
+--- a/net/netfilter/Kconfig
++++ b/net/netfilter/Kconfig
+@@ -967,6 +967,13 @@ config NETFILTER_XT_MATCH_HL
+ in the IPv6 header, or the time-to-live field in the IPv4
+ header of the packet.
+
++config NETFILTER_XT_MATCH_ID
++ tristate '"id" match support'
++ depends on NETFILTER_ADVANCED
++ ---help---
++ This option adds a `id' dummy-match, which allows you to put
++ numeric IDs into your iptables ruleset.
++
+ config NETFILTER_XT_MATCH_IPRANGE
+ tristate '"iprange" address range match support'
+ depends on NETFILTER_ADVANCED
+--- a/net/netfilter/Makefile
++++ b/net/netfilter/Makefile
+@@ -112,6 +112,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_ESP) +=
+ obj-$(CONFIG_NETFILTER_XT_MATCH_HASHLIMIT) += xt_hashlimit.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_HELPER) += xt_helper.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_HL) += xt_hl.o
++obj-$(CONFIG_NETFILTER_XT_MATCH_ID) += xt_id.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_IPRANGE) += xt_iprange.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_IPVS) += xt_ipvs.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_LENGTH) += xt_length.o
+--- /dev/null
++++ b/net/netfilter/xt_id.c
+@@ -0,0 +1,45 @@
++/*
++ * Implements a dummy match to allow attaching IDs to rules
++ *
++ * 2014-08-01 Jo-Philipp Wich <jow@openwrt.org>
++ */
++
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_id.h>
++
++MODULE_AUTHOR("Jo-Philipp Wich <jow@openwrt.org>");
++MODULE_DESCRIPTION("Xtables: No-op match which can be tagged with a 32bit ID");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("ipt_id");
++MODULE_ALIAS("ip6t_id");
++
++static bool
++id_mt(const struct sk_buff *skb, struct xt_action_param *par)
++{
++ /* We always match */
++ return true;
++}
++
++static struct xt_match id_mt_reg __read_mostly = {
++ .name = "id",
++ .revision = 0,
++ .family = NFPROTO_UNSPEC,
++ .match = id_mt,
++ .matchsize = sizeof(struct xt_id_info),
++ .me = THIS_MODULE,
++};
++
++static int __init id_mt_init(void)
++{
++ return xt_register_match(&id_mt_reg);
++}
++
++static void __exit id_mt_exit(void)
++{
++ xt_unregister_match(&id_mt_reg);
++}
++
++module_init(id_mt_init);
++module_exit(id_mt_exit);