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netfilter: Combine ipt_ttl and ip6t_hl source

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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Jan Engelhardt
2009-02-18 18:39:31 +01:00
committed by Patrick McHardy
parent 563d36eb3f
commit cfac5ef7b9
9 changed files with 117 additions and 151 deletions
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9
net/ipv6/netfilter/Kconfig
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@@ -94,15 +94,6 @@ config IP6_NF_MATCH_OPTS
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_MATCH_HL
tristate '"hl" match support'
depends on NETFILTER_ADVANCED
help
HL matching allows you to match packets based on the hop
limit of the packet.
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_MATCH_IPV6HEADER
tristate '"ipv6header" IPv6 Extension Headers Match'
default m if NETFILTER_ADVANCED=n

1
net/ipv6/netfilter/Makefile
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@@ -20,7 +20,6 @@ obj-$(CONFIG_NF_CONNTRACK_IPV6) += nf_conntrack_ipv6.o
obj-$(CONFIG_IP6_NF_MATCH_AH) += ip6t_ah.o
obj-$(CONFIG_IP6_NF_MATCH_EUI64) += ip6t_eui64.o
obj-$(CONFIG_IP6_NF_MATCH_FRAG) += ip6t_frag.o
obj-$(CONFIG_IP6_NF_MATCH_HL) += ip6t_hl.o
obj-$(CONFIG_IP6_NF_MATCH_IPV6HEADER) += ip6t_ipv6header.o
obj-$(CONFIG_IP6_NF_MATCH_MH) += ip6t_mh.o
obj-$(CONFIG_IP6_NF_MATCH_OPTS) += ip6t_hbh.o

68
net/ipv6/netfilter/ip6t_hl.c
View File

@@ -1,68 +0,0 @@
/* Hop Limit matching module */
/* (C) 2001-2002 Maciej Soltysiak <solt@dns.toxicfilms.tv>
* Based on HW's ttl module
*
* 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/ipv6.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/netfilter_ipv6/ip6t_hl.h>
#include <linux/netfilter/x_tables.h>
MODULE_AUTHOR("Maciej Soltysiak <solt@dns.toxicfilms.tv>");
MODULE_DESCRIPTION("Xtables: IPv6 Hop Limit field match");
MODULE_LICENSE("GPL");
static bool hl_mt6(const struct sk_buff *skb, const struct xt_match_param *par)
{
const struct ip6t_hl_info *info = par->matchinfo;
const struct ipv6hdr *ip6h = ipv6_hdr(skb);
switch (info->mode) {
case IP6T_HL_EQ:
return ip6h->hop_limit == info->hop_limit;
break;
case IP6T_HL_NE:
return ip6h->hop_limit != info->hop_limit;
break;
case IP6T_HL_LT:
return ip6h->hop_limit < info->hop_limit;
break;
case IP6T_HL_GT:
return ip6h->hop_limit > info->hop_limit;
break;
default:
printk(KERN_WARNING "ip6t_hl: unknown mode %d\n",
info->mode);
return false;
}
return false;
}
static struct xt_match hl_mt6_reg __read_mostly = {
.name = "hl",
.family = NFPROTO_IPV6,
.match = hl_mt6,
.matchsize = sizeof(struct ip6t_hl_info),
.me = THIS_MODULE,
};
static int __init hl_mt6_init(void)
{
return xt_register_match(&hl_mt6_reg);
}
static void __exit hl_mt6_exit(void)
{
xt_unregister_match(&hl_mt6_reg);
}
module_init(hl_mt6_init);
module_exit(hl_mt6_exit);