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 version 3 as
24 * published by the Free Software Foundation.
26 * uAnytun is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
31 * You should have received a copy of the GNU General Public License
32 * along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
40 enum device_type_enum { TYPE_UNDEF, TYPE_TUN, TYPE_TAP };
41 typedef enum device_type_enum device_type_t;
43 struct tun_device_struct {
45 unsigned int with_pi_;
51 u_int16_t prefix_length_;
53 typedef struct tun_device_struct tun_device_t;
55 int tun_init(tun_device_t* dev, const char* dev_name, const char* dev_type, const char* ifcfg_addr, u_int16_t ifcfg_prefix);
56 int tun_init_post(tun_device_t* dev);
57 void tun_do_ifconfig(tun_device_t* dev);
58 void tun_close(tun_device_t* dev);
60 int tun_read(tun_device_t* dev, u_int8_t* buf, u_int32_t len);
61 int tun_write(tun_device_t* dev, u_int8_t* buf, u_int32_t len);
64 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);
65 int tun_fix_return(int ret, size_t pi_length);
66 const char* tun_get_type_string(tun_device_t* dev);