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_l4proto.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>
34 static int generic_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
35 struct nf_conntrack_tuple *tuple)
37 memset(&tuple->src.u3, 0, sizeof(tuple->src.u3));
38 memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3));
43 static int generic_invert_tuple(struct nf_conntrack_tuple *tuple,
44 const struct nf_conntrack_tuple *orig)
46 memset(&tuple->src.u3, 0, sizeof(tuple->src.u3));
47 memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3));
52 static int generic_print_tuple(struct seq_file *s,
53 const struct nf_conntrack_tuple *tuple)
58 static int generic_print_conntrack(struct seq_file *s,
59 const struct nf_conn *conntrack)
65 generic_prepare(struct sk_buff **pskb, unsigned int hooknum,
66 unsigned int *dataoff, u_int8_t *protonum)
73 struct nf_conntrack_l3proto nf_conntrack_l3proto_generic = {
76 .pkt_to_tuple = generic_pkt_to_tuple,
77 .invert_tuple = generic_invert_tuple,
78 .print_tuple = generic_print_tuple,
79 .print_conntrack = generic_print_conntrack,
80 .prepare = generic_prepare,
82 EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_generic);