deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Added link-stats module to keep strack of link statistics and their freshness

Browse source
This commit is contained in:
Simon Duquennoy 2015-11-29 21:31:59 +01:00 • committed by Simon Duquennoy
parent 4e9b027141
commit 2fa239ee8d
4 changed files with 286 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

65
core/net/link-stats.h Normal file
View file

@ -0,0 +1,65 @@
/*
* Copyright (c) 2015, SICS Swedish ICT.
* 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.
*
*
* Authors: Simon Duquennoy <simonduq@sics.se>
*/
#ifndef LINK_STATS_H_
#define LINK_STATS_H_
#include "core/net/linkaddr.h"
/* ETX fixed point divisor. 128 is the value used by RPL (RFC 6551 and RFC 6719) */
#ifdef LINK_STATS_CONF_ETX_DIVISOR
#define LINK_STATS_ETX_DIVISOR LINK_STATS_CONF_ETX_DIVISOR
#else /* LINK_STATS_CONF_ETX_DIVISOR */
#define LINK_STATS_ETX_DIVISOR 128
#endif /* LINK_STATS_CONF_ETX_DIVISOR */
/* All statistics of a given link */
struct link_stats {
uint16_t etx; /* ETX using ETX_DIVISOR as fixed point divisor */
int16_t rssi; /* RSSI (received signal strength) */
uint8_t freshness; /* Freshness of the statistics */
clock_time_t last_tx_time; /* Last Tx timestamp */
};
/* Returns the neighbor's link statistics */
const struct link_stats *link_stats_from_lladdr(const linkaddr_t *lladdr);
/* Are the statistics fresh? */
int link_stats_is_fresh(const struct link_stats *stats);
/* Initializes link-stats module */
void link_stats_init(void);
/* Packet sent callback. Updates statistics for transmissions on a given link */
void link_stats_packet_sent(const linkaddr_t *lladdr, int status, int numtx);
/* Packet input callback. Updates statistics for receptions on a given link */
void link_stats_input_callback(const linkaddr_t *lladdr);
#endif /* LINK_STATS_H_ */