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 27 struct 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 39 extern struct clat_config Global_Clatd_Config; 40 41 int read_config(const char *file, const char *uplink_interface, const char *plat_prefix, 42 unsigned net_id); 43 void config_generate_local_ipv6_subnet(struct in6_addr *interface_ip); 44 in_addr_t config_select_ipv4_address(const struct in_addr *ip, int16_t prefixlen); 45 int ipv6_prefix_equal(struct in6_addr *a1, struct in6_addr *a2); 46 47 typedef int (*addr_free_func)(in_addr_t addr); 48 49 #endif /* __CONFIG_H__ */ 50