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 * clatd.h - main system definitions 17 */ 18 #ifndef __CLATD_H__ 19 #define __CLATD_H__ 20 21 #include <linux/if.h> 22 #include <linux/if_tun.h> 23 24 #define MAXMTU 1500 25 #define PACKETLEN (MAXMTU+sizeof(struct tun_pi)) 26 #define CLATD_VERSION "1.4" 27 28 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 29 30 // how frequently (in seconds) to poll for an address change while traffic is passing 31 #define INTERFACE_POLL_FREQUENCY 30 32 33 // how frequently (in seconds) to poll for an address change while there is no traffic 34 #define NO_TRAFFIC_INTERFACE_POLL_FREQUENCY 90 35 36 struct tun_data { 37 char device4[IFNAMSIZ]; 38 int read_fd6, write_fd6, fd4; 39 }; 40 41 #endif /* __CLATD_H__ */ 42