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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 | |
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> |
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> |
33 | |
34 | static bool generic_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff, |
35 | struct nf_conntrack_tuple *tuple) |
36 | { |
37 | memset(&tuple->src.u3, 0, sizeof(tuple->src.u3)); |
38 | memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3)); |
39 | |
40 | return true; |
41 | } |
42 | |
43 | static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple, |
44 | const struct nf_conntrack_tuple *orig) |
45 | { |
46 | memset(&tuple->src.u3, 0, sizeof(tuple->src.u3)); |
47 | memset(&tuple->dst.u3, 0, sizeof(tuple->dst.u3)); |
48 | |
49 | return true; |
50 | } |
51 | |
52 | static int generic_print_tuple(struct seq_file *s, |
53 | const struct nf_conntrack_tuple *tuple) |
54 | { |
55 | return 0; |
56 | } |
57 | |
58 | static int generic_get_l4proto(const struct sk_buff *skb, unsigned int nhoff, |
59 | unsigned int *dataoff, u_int8_t *protonum) |
60 | { |
61 | /* Never track !!! */ |
62 | return -NF_ACCEPT; |
63 | } |
64 | |
65 | |
66 | struct nf_conntrack_l3proto nf_conntrack_l3proto_generic __read_mostly = { |
67 | .l3proto = PF_UNSPEC, |
68 | .name = "unknown", |
69 | .pkt_to_tuple = generic_pkt_to_tuple, |
70 | .invert_tuple = generic_invert_tuple, |
71 | .print_tuple = generic_print_tuple, |
72 | .get_l4proto = generic_get_l4proto, |
73 | }; |
74 | EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_generic); |
75 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9