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Diffstat (limited to 'src/seq_window.h')
| -rw-r--r-- | src/seq_window.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/seq_window.h b/src/seq_window.h new file mode 100644 index 0000000..9832372 --- /dev/null +++ b/src/seq_window.h @@ -0,0 +1,60 @@ +/* + * ľAnytun + * + * ľAnytun is a tiny implementation of SATP. Unlike Anytun which is a full + * featured implementation ľAnytun has no support for multiple connections + * or synchronisation. It is a small single threaded implementation intended + * to act as a client on small platforms. + * The secure anycast tunneling protocol (satp) defines a protocol used + * for communication between any combination of unicast and anycast + * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel + * mode and allows tunneling of every ETHER TYPE protocol (e.g. + * ethernet, ip, arp ...). satp directly includes cryptography and + * message authentication based on the methodes used by SRTP. It is + * intended to deliver a generic, scaleable and secure solution for + * tunneling and relaying of packets of any protocol. + * + * + * Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org> + * + * This file is part of ľAnytun. + * + * ľAnytun is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 3 as + * published by the Free Software Foundation. + * + * ľAnytun is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with ľAnytun. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _SEQ_WINDOW_H_ +#define _SEQ_WINDOW_H_ + +struct seq_win_element_struct { + sender_id_t sender_id_; + seq_nr_t max_; + window_size_t pos_; + u_int8_t* window_; + struct seq_win_element_struct* next_; +}; +typedef struct seq_win_element_struct seq_win_element_t; + +struct seq_win_struct { + window_size_t size_; + seq_win_element_t* first_; +}; +typedef struct seq_win_struct seq_win_t; + +void seq_win_init(seq_win_t** win, window_size_t size); +void seq_win_clear(seq_win_t** win); +seq_win_element_t* seq_win_new_element(sender_id_t sender_id, seq_nr_t max, window_size_t size); +int seq_win_check_and_add(seq_win_t* win, sender_id_t sender_id, seq_nr_t seq_nr); + +void seq_win_print(seq_win_t* win); + +#endif |