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0c67c02047
This PR depends on #1766. It contains a minimal implementation of the AODVv2 routing protocol. *Not* implemented are: - AckReqs - alternate metrics - multiple interfaces - clients and Client Networks - buffering - all addresses, TLVs, and features that are marked as optional An example application can be found at https://github.com/Lotterleben/RIOT-AODVv2/tree/master/aodvv2_demo. The implementation relies heavily on a functioning Neighbor Discovery Protocol. It might be necessary to fill the neighbor cache manually with the current state of RIOTs NDP implementation. The value of AODVV2_MAX_UNREACHABLE_NODES has been chosen arbitrarily and will be subject to future improvement. Please note that based on my experience, with the default transceiver buffer size (3) of the native port, about 2/3 of the route discoveries will fail. This has been addressed in issue #1747. It is advised to increase the transceiver buffer size when using AODVv2 as a routing protocol.
64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin
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* Copyright (C) 2014 Lotte Steenbrink <lotte.steenbrink@fu-berlin.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup aodvv2
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* @{
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*
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* @file seqnum.h
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* @brief aodvv2 sequence number
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*
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* @author Lotte Steenbrink <lotte.steenbrink@fu-berlin.de>
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*/
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#ifndef AODVV2_SEQNUM_H_
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#define AODVV2_SEQNUM_H_
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#include <stdint.h>
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#include "aodvv2/types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Initialize sequence number.
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*/
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void seqnum_init(void);
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/**
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* @brief Get sequence number.
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*
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* @return sequence number
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*/
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aodvv2_seqnum_t seqnum_get(void);
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/**
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* @brief Increment the sequence number by 1.
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*/
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void seqnum_inc(void);
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/**
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* @brief Compare 2 sequence numbers.
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* @param[in] s1 first sequence number
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* @param[in] s2 second sequence number
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* @return -1 when s1 is smaller, 0 if equal, 1 if s1 is bigger.
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*/
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static inline int seqnum_cmp(aodvv2_seqnum_t s1, aodvv2_seqnum_t s2)
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{
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return s1 == s2 ? 0 : (s1 > s2 ? +1 : -1);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* AODVV2_SEQNUM_H_ */
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