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9fb9cbb1 YK |
1 | /* |
2 | * (C) 2003,2004 USAGI/WIDE Project <http://www.linux-ipv6.org> | |
3 | * | |
4 | * Based largely upon the original ip_conntrack code which | |
5 | * had the following copyright information: | |
6 | * | |
7 | * (C) 1999-2001 Paul `Rusty' Russell | |
8 | * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> | |
9 | * | |
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. | |
13 | * | |
14 | * Author: | |
15 | * Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp> | |
16 | */ | |
17 | ||
9fb9cbb1 YK |
18 | #include <linux/types.h> |
19 | #include <linux/ip.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> | |
25 | #include <net/ip.h> | |
26 | ||
27 | #include <linux/netfilter_ipv4.h> | |
28 | #include <net/netfilter/nf_conntrack.h> | |
605dcad6 | 29 | #include <net/netfilter/nf_conntrack_l4proto.h> |
9fb9cbb1 YK |
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> | |
33 | ||
34 | #if 0 | |
35 | #define DEBUGP printk | |
36 | #else | |
37 | #define DEBUGP(format, args...) | |
38 | #endif | |
39 | ||
9fb9cbb1 YK |
40 | static int generic_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff, |
41 | struct nf_conntrack_tuple *tuple) | |
42 | { | |
43 | memset(&tuple->src.u3, 0, sizeof(tuple->src.u3)); | |
44 | memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3)); | |
45 | ||
46 | return 1; | |
47 | } | |
48 | ||
49 | static int generic_invert_tuple(struct nf_conntrack_tuple *tuple, | |
50 | const struct nf_conntrack_tuple *orig) | |
51 | { | |
52 | memset(&tuple->src.u3, 0, sizeof(tuple->src.u3)); | |
53 | memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3)); | |
54 | ||
55 | return 1; | |
56 | } | |
57 | ||
58 | static int generic_print_tuple(struct seq_file *s, | |
59 | const struct nf_conntrack_tuple *tuple) | |
60 | { | |
61 | return 0; | |
62 | } | |
63 | ||
64 | static int generic_print_conntrack(struct seq_file *s, | |
65 | const struct nf_conn *conntrack) | |
66 | { | |
67 | return 0; | |
68 | } | |
69 | ||
70 | static int | |
71 | generic_prepare(struct sk_buff **pskb, unsigned int hooknum, | |
72 | unsigned int *dataoff, u_int8_t *protonum) | |
73 | { | |
74 | /* Never track !!! */ | |
75 | return -NF_ACCEPT; | |
76 | } | |
77 | ||
78 | ||
79 | static u_int32_t generic_get_features(const struct nf_conntrack_tuple *tuple) | |
80 | ||
81 | { | |
82 | return NF_CT_F_BASIC; | |
83 | } | |
84 | ||
605dcad6 | 85 | struct nf_conntrack_l3proto nf_conntrack_l3proto_generic = { |
9fb9cbb1 YK |
86 | .l3proto = PF_UNSPEC, |
87 | .name = "unknown", | |
88 | .pkt_to_tuple = generic_pkt_to_tuple, | |
89 | .invert_tuple = generic_invert_tuple, | |
90 | .print_tuple = generic_print_tuple, | |
91 | .print_conntrack = generic_print_conntrack, | |
92 | .prepare = generic_prepare, | |
93 | .get_features = generic_get_features, | |
9fb9cbb1 | 94 | }; |
e4bd8bce | 95 | EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_generic); |