Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 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> |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 18 | #include <net/netfilter/nf_nat_l4proto.h> |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 19 | |
Jan Engelhardt | f2ea825 | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 20 | static bool unknown_in_range(const struct nf_conntrack_tuple *tuple, |
| 21 | enum nf_nat_manip_type manip_type, |
| 22 | const union nf_conntrack_man_proto *min, |
| 23 | const union nf_conntrack_man_proto *max) |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 24 | { |
Jan Engelhardt | f2ea825 | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 25 | return true; |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 26 | } |
| 27 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 28 | static void unknown_unique_tuple(const struct nf_nat_l3proto *l3proto, |
| 29 | struct nf_conntrack_tuple *tuple, |
| 30 | const struct nf_nat_range *range, |
Jan Engelhardt | f2ea825 | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 31 | enum nf_nat_manip_type maniptype, |
| 32 | const struct nf_conn *ct) |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 33 | { |
| 34 | /* Sorry: we can't help you; if it's not unique, we can't frob |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 35 | * anything. |
| 36 | */ |
Changli Gao | f43dc98 | 2010-08-02 17:20:54 +0200 | [diff] [blame] | 37 | return; |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 38 | } |
| 39 | |
Jan Engelhardt | f2ea825 | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 40 | static bool |
Herbert Xu | 3db05fe | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 41 | unknown_manip_pkt(struct sk_buff *skb, |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 42 | const struct nf_nat_l3proto *l3proto, |
| 43 | unsigned int iphdroff, unsigned int hdroff, |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 44 | const struct nf_conntrack_tuple *tuple, |
| 45 | enum nf_nat_manip_type maniptype) |
| 46 | { |
Jan Engelhardt | f2ea825 | 2008-04-14 11:15:53 +0200 | [diff] [blame] | 47 | return true; |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 48 | } |
| 49 | |
Patrick McHardy | c7232c9 | 2012-08-26 19:14:06 +0200 | [diff] [blame] | 50 | const struct nf_nat_l4proto nf_nat_l4proto_unknown = { |
Jozsef Kadlecsik | 5b1158e | 2006-12-02 22:07:13 -0800 | [diff] [blame] | 51 | .manip_pkt = unknown_manip_pkt, |
| 52 | .in_range = unknown_in_range, |
| 53 | .unique_tuple = unknown_unique_tuple, |
| 54 | }; |