| /* |
| * Copyright (c) 2010, Swedish Institute of Computer Science. |
| * All rights reserved. |
| * |
| * Copyright (c) 2013, ADVANSEE - http://www.advansee.com/ |
| * Benoît Thébaudeau <benoit.thebaudeau@advansee.com> |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the Institute nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * This file is part of the Contiki operating system. |
| * |
| */ |
| |
| /** |
| * \file |
| * Header file for MAC sequence numbers management |
| * \author |
| * Adam Dunkels <adam@sics.se> |
| * Benoît Thébaudeau <benoit.thebaudeau@advansee.com> |
| */ |
| |
| #ifndef MAC_SEQUENCE_H |
| #define MAC_SEQUENCE_H |
| |
| /** |
| * \brief Tell whether the packetbuf is a duplicate packet |
| * \return Non-zero if the packetbuf is a duplicate packet, zero otherwise |
| * |
| * This function is used to check for duplicate packet by comparing |
| * the sequence number of the incoming packet with the last few ones |
| * we saw, filtering with the Rime address. |
| */ |
| int mac_sequence_is_duplicate(struct net_buf *buf); |
| |
| /** |
| * \brief Register the sequence number of the packetbuf |
| * |
| * This function is used to add the sequence number of the incoming |
| * packet to the history. |
| */ |
| void mac_sequence_register_seqno(struct net_buf *buf); |
| |
| #endif /* MAC_SEQUENCE_H */ |