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
36struct tun_data {
37  char device4[IFNAMSIZ];
38  int read_fd6, write_fd6, fd4;
39};
40
41#endif /* __CLATD_H__ */
42