master
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright 2005, Gleb Smirnoff <glebius@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
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 */
36struct 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#define NG_NAT_UNREGISTERED_CGN 0x100
56
57#define NG_NAT_DESC_LENGTH 64
58#define NG_NAT_REDIRPROTO_ADDR (IPPROTO_MAX + 3) /* LibAlias' LINK_ADDR, also unused in in.h */
59
60/* Arguments for NGM_NAT_REDIRECT_PORT message */
61struct ng_nat_redirect_port {
62 struct in_addr local_addr;
63 struct in_addr alias_addr;
64 struct in_addr remote_addr;
65 uint16_t local_port;
66 uint16_t alias_port;
67 uint16_t remote_port;
68 uint8_t proto;
69 char description[NG_NAT_DESC_LENGTH];
70};
71
72/* Keep this in sync with the above structure definition */
73#define NG_NAT_REDIRECT_PORT_TYPE_INFO(desctype) { \
74 { "local_addr", &ng_parse_ipaddr_type }, \
75 { "alias_addr", &ng_parse_ipaddr_type }, \
76 { "remote_addr", &ng_parse_ipaddr_type }, \
77 { "local_port", &ng_parse_uint16_type }, \
78 { "alias_port", &ng_parse_uint16_type }, \
79 { "remote_port", &ng_parse_uint16_type }, \
80 { "proto", &ng_parse_uint8_type }, \
81 { "description", (desctype) }, \
82 { NULL } \
83}
84
85/* Arguments for NGM_NAT_REDIRECT_ADDR message */
86struct ng_nat_redirect_addr {
87 struct in_addr local_addr;
88 struct in_addr alias_addr;
89 char description[NG_NAT_DESC_LENGTH];
90};
91
92/* Keep this in sync with the above structure definition */
93#define NG_NAT_REDIRECT_ADDR_TYPE_INFO(desctype) { \
94 { "local_addr", &ng_parse_ipaddr_type }, \
95 { "alias_addr", &ng_parse_ipaddr_type }, \
96 { "description", (desctype) }, \
97 { NULL } \
98}
99
100/* Arguments for NGM_NAT_REDIRECT_PROTO message */
101struct ng_nat_redirect_proto {
102 struct in_addr local_addr;
103 struct in_addr alias_addr;
104 struct in_addr remote_addr;
105 uint8_t proto;
106 char description[NG_NAT_DESC_LENGTH];
107};
108
109/* Keep this in sync with the above structure definition */
110#define NG_NAT_REDIRECT_PROTO_TYPE_INFO(desctype) { \
111 { "local_addr", &ng_parse_ipaddr_type }, \
112 { "alias_addr", &ng_parse_ipaddr_type }, \
113 { "remote_addr", &ng_parse_ipaddr_type }, \
114 { "proto", &ng_parse_uint8_type }, \
115 { "description", (desctype) }, \
116 { NULL } \
117}
118
119/* Arguments for NGM_NAT_ADD_SERVER message */
120struct ng_nat_add_server {
121 uint32_t id;
122 struct in_addr addr;
123 uint16_t port;
124};
125
126/* Keep this in sync with the above structure definition */
127#define NG_NAT_ADD_SERVER_TYPE_INFO { \
128 { "id", &ng_parse_uint32_type }, \
129 { "addr", &ng_parse_ipaddr_type }, \
130 { "port", &ng_parse_uint16_type }, \
131 { NULL } \
132}
133
134/* List entry of array returned in NGM_NAT_LIST_REDIRECTS message */
135struct ng_nat_listrdrs_entry {
136 uint32_t id; /* Anything except zero */
137 struct in_addr local_addr;
138 struct in_addr alias_addr;
139 struct in_addr remote_addr;
140 uint16_t local_port;
141 uint16_t alias_port;
142 uint16_t remote_port;
143 uint16_t proto; /* Valid proto or NG_NAT_REDIRPROTO_ADDR */
144 uint16_t lsnat; /* LSNAT servers count */
145 char description[NG_NAT_DESC_LENGTH];
146};
147
148/* Keep this in sync with the above structure definition */
149#define NG_NAT_LISTRDRS_ENTRY_TYPE_INFO(desctype) { \
150 { "id", &ng_parse_uint32_type }, \
151 { "local_addr", &ng_parse_ipaddr_type }, \
152 { "alias_addr", &ng_parse_ipaddr_type }, \
153 { "remote_addr", &ng_parse_ipaddr_type }, \
154 { "local_port", &ng_parse_uint16_type }, \
155 { "alias_port", &ng_parse_uint16_type }, \
156 { "remote_port", &ng_parse_uint16_type }, \
157 { "proto", &ng_parse_uint16_type }, \
158 { "lsnat", &ng_parse_uint16_type }, \
159 { "description", (desctype) }, \
160 { NULL } \
161}
162
163/* Structure returned by NGM_NAT_LIST_REDIRECTS */
164struct ng_nat_list_redirects {
165 uint32_t total_count;
166 struct ng_nat_listrdrs_entry redirects[];
167};
168
169/* Keep this in sync with the above structure definition */
170#define NG_NAT_LIST_REDIRECTS_TYPE_INFO(redirtype) { \
171 { "total_count", &ng_parse_uint32_type }, \
172 { "redirects", (redirtype) }, \
173 { NULL } \
174}
175
176/* Structure returned by NGM_NAT_LIBALIAS_INFO */
177struct ng_nat_libalias_info {
178 uint32_t icmpLinkCount;
179 uint32_t udpLinkCount;
180 uint32_t tcpLinkCount;
181 uint32_t sctpLinkCount;
182 uint32_t pptpLinkCount;
183 uint32_t protoLinkCount;
184 uint32_t fragmentIdLinkCount;
185 uint32_t fragmentPtrLinkCount;
186 uint32_t sockCount;
187};
188
189/* Keep this in sync with the above structure definition */
190#define NG_NAT_LIBALIAS_INFO { \
191 { "icmpLinkCount", &ng_parse_uint32_type }, \
192 { "udpLinkCount", &ng_parse_uint32_type }, \
193 { "tcpLinkCount", &ng_parse_uint32_type }, \
194 { "sctpLinkCount", &ng_parse_uint32_type }, \
195 { "pptpLinkCount", &ng_parse_uint32_type }, \
196 { "protoLinkCount", &ng_parse_uint32_type }, \
197 { "fragmentIdLinkCount", &ng_parse_uint32_type }, \
198 { "fragmentPtrLinkCount", &ng_parse_uint32_type }, \
199 { "sockCount", &ng_parse_uint32_type }, \
200 { NULL } \
201}
202
203enum {
204 NGM_NAT_SET_IPADDR = 1,
205 NGM_NAT_SET_MODE,
206 NGM_NAT_SET_TARGET,
207 NGM_NAT_REDIRECT_PORT,
208 NGM_NAT_REDIRECT_ADDR,
209 NGM_NAT_REDIRECT_PROTO,
210 NGM_NAT_REDIRECT_DYNAMIC,
211 NGM_NAT_REDIRECT_DELETE,
212 NGM_NAT_ADD_SERVER,
213 NGM_NAT_LIST_REDIRECTS,
214 NGM_NAT_PROXY_RULE,
215 NGM_NAT_LIBALIAS_INFO,
216 NGM_NAT_SET_DLT,
217 NGM_NAT_GET_DLT,
218};