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/>.
35 #ifndef _SEQ_WINDOW_H_
36 #define _SEQ_WINDOW_H_
38 struct seq_win_element_struct {
39 sender_id_t sender_id_;
43 struct seq_win_element_struct* next_;
45 typedef struct seq_win_element_struct seq_win_element_t;
47 struct seq_win_struct {
49 seq_win_element_t* first_;
51 typedef struct seq_win_struct seq_win_t;
53 int seq_win_init(seq_win_t* win, window_size_t size);
54 void seq_win_clear(seq_win_t* win);
55 seq_win_element_t* seq_win_new_element(sender_id_t sender_id, seq_nr_t max, window_size_t size);
56 int seq_win_check_and_add(seq_win_t* win, sender_id_t sender_id, seq_nr_t seq_nr);
58 void seq_win_print(seq_win_t* win);