1/*
2 * Copyright 2011 Daniel Drown
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 * config.h - configuration settings
17 */
18#ifndef __CONFIG_H__
19#define __CONFIG_H__
20
21#include <netinet/in.h>
22
23#define DEFAULT_IPV4_LOCAL_SUBNET "192.0.0.4"
24#define DEFAULT_IPV4_LOCAL_PREFIXLEN "29"
25#define DEFAULT_DNS64_DETECTION_HOSTNAME "ipv4only.arpa"
26
27struct clat_config {
28  int16_t mtu, ipv4mtu;
29  struct in6_addr ipv6_local_subnet;
30  struct in6_addr ipv6_host_id;
31  struct in_addr ipv4_local_subnet;
32  int16_t ipv4_local_prefixlen;
33  struct in6_addr plat_subnet;
34  char *default_pdp_interface;
35  char *plat_from_dns64_hostname;
36  int use_dynamic_iid;
37};
38
39extern struct clat_config Global_Clatd_Config;
40
41int read_config(const char *file, const char *uplink_interface, const char *plat_prefix,
42        unsigned net_id);
43void config_generate_local_ipv6_subnet(struct in6_addr *interface_ip);
44in_addr_t config_select_ipv4_address(const struct in_addr *ip, int16_t prefixlen);
45int ipv6_prefix_equal(struct in6_addr *a1, struct in6_addr *a2);
46
47typedef int (*addr_free_func)(in_addr_t addr);
48
49#endif /* __CONFIG_H__ */
50