2 * (C) 2003,2004 USAGI/WIDE Project <http://www.linux-ipv6.org>
4 * Based largely upon the original ip_conntrack code which
5 * had the following copyright information:
7 * (C) 1999-2001 Paul `Rusty' Russell
8 * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 * Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
18 #include <linux/types.h>
20 #include <linux/netfilter.h>
21 #include <linux/module.h>
22 #include <linux/skbuff.h>
23 #include <linux/icmp.h>
24 #include <linux/sysctl.h>
27 #include <linux/netfilter_ipv4.h>
28 #include <net/netfilter/nf_conntrack.h>
29 #include <net/netfilter/nf_conntrack_protocol.h>
30 #include <net/netfilter/nf_conntrack_l3proto.h>
31 #include <net/netfilter/nf_conntrack_core.h>
32 #include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
37 #define DEBUGP(format, args...)
40 DECLARE_PER_CPU(struct nf_conntrack_stat
, nf_conntrack_stat
);
42 static int generic_pkt_to_tuple(const struct sk_buff
*skb
, unsigned int nhoff
,
43 struct nf_conntrack_tuple
*tuple
)
45 memset(&tuple
->src
.u3
, 0, sizeof(tuple
->src
.u3
));
46 memset(&tuple
->dst
.u3
, 0, sizeof(tuple
->dst
.u3
));
51 static int generic_invert_tuple(struct nf_conntrack_tuple
*tuple
,
52 const struct nf_conntrack_tuple
*orig
)
54 memset(&tuple
->src
.u3
, 0, sizeof(tuple
->src
.u3
));
55 memset(&tuple
->dst
.u3
, 0, sizeof(tuple
->dst
.u3
));
60 static int generic_print_tuple(struct seq_file
*s
,
61 const struct nf_conntrack_tuple
*tuple
)
66 static int generic_print_conntrack(struct seq_file
*s
,
67 const struct nf_conn
*conntrack
)
73 generic_prepare(struct sk_buff
**pskb
, unsigned int hooknum
,
74 unsigned int *dataoff
, u_int8_t
*protonum
)
81 static u_int32_t
generic_get_features(const struct nf_conntrack_tuple
*tuple
)
87 struct nf_conntrack_l3proto nf_conntrack_generic_l3proto
= {
90 .pkt_to_tuple
= generic_pkt_to_tuple
,
91 .invert_tuple
= generic_invert_tuple
,
92 .print_tuple
= generic_print_tuple
,
93 .print_conntrack
= generic_print_conntrack
,
94 .prepare
= generic_prepare
,
95 .get_features
= generic_get_features
,