netfilter: nf_nat: add protoff argument to packet mangling functions
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / ipv4 / netfilter / nf_nat_proto_unknown.c
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1/* The "unknown" protocol. This is what is used for protocols we
2 * don't understand. It's returned by ip_ct_find_proto().
3 */
4
5/* (C) 1999-2001 Paul `Rusty' Russell
6 * (C) 2002-2006 Netfilter Core Team <coreteam@netfilter.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#include <linux/types.h>
14#include <linux/init.h>
15
16#include <linux/netfilter.h>
17#include <net/netfilter/nf_nat.h>
18#include <net/netfilter/nf_nat_rule.h>
19#include <net/netfilter/nf_nat_protocol.h>
20
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21static bool unknown_in_range(const struct nf_conntrack_tuple *tuple,
22 enum nf_nat_manip_type manip_type,
23 const union nf_conntrack_man_proto *min,
24 const union nf_conntrack_man_proto *max)
5b1158e9 25{
f2ea825f 26 return true;
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27}
28
f43dc98b 29static void unknown_unique_tuple(struct nf_conntrack_tuple *tuple,
cbc9f2f4 30 const struct nf_nat_ipv4_range *range,
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31 enum nf_nat_manip_type maniptype,
32 const struct nf_conn *ct)
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33{
34 /* Sorry: we can't help you; if it's not unique, we can't frob
35 anything. */
f43dc98b 36 return;
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37}
38
f2ea825f 39static bool
3db05fea 40unknown_manip_pkt(struct sk_buff *skb,
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41 unsigned int iphdroff,
42 const struct nf_conntrack_tuple *tuple,
43 enum nf_nat_manip_type maniptype)
44{
f2ea825f 45 return true;
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46}
47
2b628a08 48const struct nf_nat_protocol nf_nat_unknown_protocol = {
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49 .manip_pkt = unknown_manip_pkt,
50 .in_range = unknown_in_range,
51 .unique_tuple = unknown_unique_tuple,
52};