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authorJan Engelhardt <jengelh@medozas.de>2009-02-18 12:39:31 -0500
committerPatrick McHardy <kaber@trash.net>2009-02-18 12:39:31 -0500
commitcfac5ef7b92a2d504563989ecd0beb563920444b (patch)
treed0d7ef26dc3eeaf0ab72494814665a7c1565ebd3 /net/ipv4
parent563d36eb3fb22dd04da9aa6f12e1b9ba0ac115f3 (diff)
netfilter: Combine ipt_ttl and ip6t_hl source
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/netfilter/Kconfig9
-rw-r--r--net/ipv4/netfilter/Makefile1
-rw-r--r--net/ipv4/netfilter/ipt_ttl.c63
3 files changed, 0 insertions, 73 deletions
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index 3ad9f43b4c45..40ad41f19b72 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -92,15 +92,6 @@ config IP_NF_MATCH_ECN
92 92
93 To compile it as a module, choose M here. If unsure, say N. 93 To compile it as a module, choose M here. If unsure, say N.
94 94
95config IP_NF_MATCH_TTL
96 tristate '"ttl" match support'
97 depends on NETFILTER_ADVANCED
98 help
99 This adds CONFIG_IP_NF_MATCH_TTL option, which enabled the user
100 to match packets by their TTL value.
101
102 To compile it as a module, choose M here. If unsure, say N.
103
104# `filter', generic and specific targets 95# `filter', generic and specific targets
105config IP_NF_FILTER 96config IP_NF_FILTER
106 tristate "Packet filtering" 97 tristate "Packet filtering"
diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile
index 20b0c37155fb..48111594ee9b 100644
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -51,7 +51,6 @@ obj-$(CONFIG_IP_NF_SECURITY) += iptable_security.o
51obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o 51obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o
52obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o 52obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o
53obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o 53obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o
54obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o
55 54
56# targets 55# targets
57obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o 56obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
diff --git a/net/ipv4/netfilter/ipt_ttl.c b/net/ipv4/netfilter/ipt_ttl.c
deleted file mode 100644
index 297f1cbf4ff5..000000000000
--- a/net/ipv4/netfilter/ipt_ttl.c
+++ /dev/null
@@ -1,63 +0,0 @@
1/* IP tables module for matching the value of the TTL
2 *
3 * (C) 2000,2001 by Harald Welte <laforge@netfilter.org>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#include <linux/ip.h>
11#include <linux/module.h>
12#include <linux/skbuff.h>
13
14#include <linux/netfilter_ipv4/ipt_ttl.h>
15#include <linux/netfilter/x_tables.h>
16
17MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
18MODULE_DESCRIPTION("Xtables: IPv4 TTL field match");
19MODULE_LICENSE("GPL");
20
21static bool ttl_mt(const struct sk_buff *skb, const struct xt_match_param *par)
22{
23 const struct ipt_ttl_info *info = par->matchinfo;
24 const u8 ttl = ip_hdr(skb)->ttl;
25
26 switch (info->mode) {
27 case IPT_TTL_EQ:
28 return ttl == info->ttl;
29 case IPT_TTL_NE:
30 return ttl != info->ttl;
31 case IPT_TTL_LT:
32 return ttl < info->ttl;
33 case IPT_TTL_GT:
34 return ttl > info->ttl;
35 default:
36 printk(KERN_WARNING "ipt_ttl: unknown mode %d\n",
37 info->mode);
38 return false;
39 }
40
41 return false;
42}
43
44static struct xt_match ttl_mt_reg __read_mostly = {
45 .name = "ttl",
46 .family = NFPROTO_IPV4,
47 .match = ttl_mt,
48 .matchsize = sizeof(struct ipt_ttl_info),
49 .me = THIS_MODULE,
50};
51
52static int __init ttl_mt_init(void)
53{
54 return xt_register_match(&ttl_mt_reg);
55}
56
57static void __exit ttl_mt_exit(void)
58{
59 xt_unregister_match(&ttl_mt_reg);
60}
61
62module_init(ttl_mt_init);
63module_exit(ttl_mt_exit);