xref: /freebsd/sys/netgraph/ng_nat.h (revision 1669d8afc64812c8d2d1d147ae1fd42ff441e1b1)
1 /*-
2  * Copyright 2005, Gleb Smirnoff <glebius@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #define NG_NAT_NODE_TYPE    "nat"
30 #define NGM_NAT_COOKIE      1107718711
31 
32 #define	NG_NAT_HOOK_IN	"in"
33 #define	NG_NAT_HOOK_OUT	"out"
34 
35 /* Arguments for NGM_NAT_SET_MODE message */
36 struct ng_nat_mode {
37 	uint32_t	flags;
38 	uint32_t	mask;
39 };
40 
41 /* Keep this in sync with the above structure definition */
42 #define NG_NAT_MODE_INFO {				\
43 	  { "flags",	&ng_parse_uint32_type	},	\
44 	  { "mask",	&ng_parse_uint32_type	},	\
45 	  { NULL }					\
46 }
47 
48 #define NG_NAT_LOG			0x01
49 #define NG_NAT_DENY_INCOMING		0x02
50 #define NG_NAT_SAME_PORTS		0x04
51 #define NG_NAT_UNREGISTERED_ONLY	0x10
52 #define NG_NAT_RESET_ON_ADDR_CHANGE	0x20
53 #define NG_NAT_PROXY_ONLY		0x40
54 #define NG_NAT_REVERSE			0x80
55 
56 enum {
57 	NGM_NAT_SET_IPADDR = 1,
58 	NGM_NAT_SET_MODE,
59 	NGM_NAT_SET_TARGET,
60 };
61