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) 2007-2010 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_plain_packet_h_INCLUDED
37 #define UANYTUN_plain_packet_h_INCLUDED
39 #define PLAIN_PACKET_SIZE_MAX 1600
41 #define PAYLOAD_TYPE_TAP 0x6558
42 #define PAYLOAD_TYPE_TUN 0x0000
43 #define PAYLOAD_TYPE_TUN4 0x0800
44 #define PAYLOAD_TYPE_TUN6 0x86DD
45 #define PAYLOAD_TYPE_UNKNOWN 0xFFFF
47 struct plain_packet_struct {
48 u_int32_t payload_length_;
49 union __attribute__ ((__packed__)) {
50 u_int8_t buf_[PLAIN_PACKET_SIZE_MAX];
51 payload_type_t payload_type_;
54 typedef struct plain_packet_struct plain_packet_t;
56 void plain_packet_init(plain_packet_t* packet);
58 u_int32_t plain_packet_get_header_length();
60 u_int8_t* plain_packet_get_packet(plain_packet_t* packet);
61 u_int32_t plain_packet_get_length(plain_packet_t* packet);
62 void plain_packet_set_length(plain_packet_t* packet, u_int32_t len);
64 u_int8_t* plain_packet_get_payload(plain_packet_t* packet);
65 u_int32_t plain_packet_get_payload_length(plain_packet_t* packet);
66 void plain_packet_set_payload_length(plain_packet_t* packet, u_int32_t len);
68 payload_type_t plain_packet_get_type(plain_packet_t* packet);
69 void plain_packet_set_type(plain_packet_t* packet, payload_type_t type);