FreeBSD/Linux Kernel Cross Reference
sys/netgraph/ng_nat.h
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 #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 */
61 struct 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 */
86 struct 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 */
101 struct 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 */
120 struct 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 */
135 struct 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 */
164 struct 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 */
177 struct 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
203 enum {
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 };
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