4 * uAnytun is a tiny implementation of SATP. Unlike Anytun which is a full
5 * featured implementation uAnytun has no support for multiple connections
6 * or synchronisation. It is a small single threaded implementation intended
7 * to act as a client on small platforms.
8 * The secure anycast tunneling protocol (satp) defines a protocol used
9 * for communication between any combination of unicast and anycast
10 * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
11 * mode and allows tunneling of every ETHER TYPE protocol (e.g.
12 * ethernet, ip, arp ...). satp directly includes cryptography and
13 * message authentication based on the methodes used by SRTP. It is
14 * intended to deliver a generic, scaleable and secure solution for
15 * tunneling and relaying of packets of any protocol.
18 * Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
20 * This file is part of uAnytun.
22 * uAnytun is free software: you can redistribute it and/or modify
23 * it under the terms of the GNU General Public License as published by
24 * the Free Software Foundation, either version 3 of the License, or
27 * uAnytun is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU General Public License for more details.
32 * You should have received a copy of the GNU General Public License
33 * along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
36 #ifndef UANYTUN_tun_h_INCLUDED
37 #define UANYTUN_tun_h_INCLUDED
41 enum device_type_enum { TYPE_UNDEF, TYPE_TUN, TYPE_TAP };
42 typedef enum device_type_enum device_type_t;
44 struct tun_device_struct {
46 unsigned int with_pi_;
52 u_int16_t prefix_length_;
54 typedef struct tun_device_struct tun_device_t;
56 int tun_init(tun_device_t* dev, const char* dev_name, const char* dev_type, const char* ifcfg_addr, u_int16_t ifcfg_prefix);
57 int tun_init_post(tun_device_t* dev);
58 void tun_do_ifconfig(tun_device_t* dev);
59 void tun_close(tun_device_t* dev);
61 int tun_read(tun_device_t* dev, u_int8_t* buf, u_int32_t len);
62 int tun_write(tun_device_t* dev, u_int8_t* buf, u_int32_t len);
65 void tun_conf(tun_device_t* dev, const char* dev_name, const char* dev_type, const char* ifcfg_addr, u_int16_t ifcfg_prefix, u_int16_t mtu);
66 int tun_fix_return(int ret, size_t pi_length);
67 const char* tun_get_type_string(tun_device_t* dev);