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Merge pull request #649 from atiselsts/contrib/link-stat-packet-counters 

Add link stat packet counters
This commit is contained in:
Simon Duquennoy 2018-10-12 09:05:05 +02:00 committed by GitHub
parent 5f3ebfceb3 4567ee303e
commit c6b795d3df
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 79 additions and 6 deletions
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59
os/net/link-stats.c
View File

@ -37,12 +37,10 @@
#include "net/link-stats.h"
#include <stdio.h>
#define DEBUG 0
#if DEBUG
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...)
#endif
/* Log configuration */
#include "sys/log.h"
#define LOG_MODULE "Link Stats"
#define LOG_LEVEL LOG_LEVEL_MAC
/* Maximum value for the Tx count counter */
#define TX_COUNT_MAX 32
@ -82,6 +80,13 @@ link_stats_from_lladdr(const linkaddr_t *lladdr)
return nbr_table_get_from_lladdr(link_stats, lladdr);
}
/*---------------------------------------------------------------------------*/
/* Returns the neighbor's address given a link stats item */
const linkaddr_t *
link_stats_get_lladdr(const struct link_stats *stat)
{
return nbr_table_get_lladdr(link_stats, stat);
}
/*---------------------------------------------------------------------------*/
/* Are the statistics fresh? */
int
link_stats_is_fresh(const struct link_stats *stats)
@ -156,6 +161,14 @@ link_stats_packet_sent(const linkaddr_t *lladdr, int status, int numtx)
stats->last_tx_time = clock_time();
stats->freshness = MIN(stats->freshness + numtx, FRESHNESS_MAX);
#if LINK_STATS_PACKET_COUNTERS
/* Update paket counters */
stats->cnt_current.num_packets_tx += numtx;
if(status == MAC_TX_OK) {
stats->cnt_current.num_packets_acked++;
}
#endif
/* Add penalty in case of no-ACK */
if(status == MAC_TX_NOACK) {
numtx += ETX_NOACK_PENALTY;
@ -219,8 +232,38 @@ link_stats_input_callback(const linkaddr_t *lladdr)
/* Update RSSI EWMA */
stats->rssi = ((int32_t)stats->rssi * (EWMA_SCALE - EWMA_ALPHA) +
(int32_t)packet_rssi * EWMA_ALPHA) / EWMA_SCALE;
#if LINK_STATS_PACKET_COUNTERS
stats->cnt_current.num_packets_rx++;
#endif
}
/*---------------------------------------------------------------------------*/
#if LINK_STATS_PACKET_COUNTERS
/*---------------------------------------------------------------------------*/
static void
print_and_update_counters(void)
{
struct link_stats *stats;
for(stats = nbr_table_head(link_stats); stats != NULL;
stats = nbr_table_next(link_stats, stats)) {
struct link_packet_counter *c = &stats->cnt_current;
LOG_INFO("num packets: tx=%u ack=%u rx=%u to=",
c->num_packets_tx, c->num_packets_acked, c->num_packets_rx);
LOG_INFO_LLADDR(link_stats_get_lladdr(stats));
LOG_INFO_("\n");
stats->cnt_total.num_packets_tx += stats->cnt_current.num_packets_tx;
stats->cnt_total.num_packets_acked += stats->cnt_current.num_packets_acked;
stats->cnt_total.num_packets_rx += stats->cnt_current.num_packets_rx;
memset(&stats->cnt_current, 0, sizeof(stats->cnt_current));
}
}
/*---------------------------------------------------------------------------*/
#endif /* LINK_STATS_PACKET_COUNTERS */
/*---------------------------------------------------------------------------*/
/* Periodic timer called at a period of FRESHNESS_HALF_LIFE */
static void
periodic(void *ptr)
@ -231,6 +274,10 @@ periodic(void *ptr)
for(stats = nbr_table_head(link_stats); stats != NULL; stats = nbr_table_next(link_stats, stats)) {
stats->freshness >>= 1;
}
#if LINK_STATS_PACKET_COUNTERS
print_and_update_counters();
#endif
}
/*---------------------------------------------------------------------------*/
/* Resets link-stats module */

26
os/net/link-stats.h
View File

@ -56,6 +56,25 @@
#define LINK_STATS_ETX_FROM_PACKET_COUNT 0
#endif /* LINK_STATS_ETX_FROM_PACKET_COUNT */
/* Store and periodically print packet counters? */
#ifdef LINK_STATS_CONF_PACKET_COUNTERS
#define LINK_STATS_PACKET_COUNTERS LINK_STATS_CONF_PACKET_COUNTERS
#else /* LINK_STATS_CONF_PACKET_COUNTERS */
#define LINK_STATS_PACKET_COUNTERS 0
#endif /* LINK_STATS_PACKET_COUNTERS */
typedef uint16_t link_packet_stat_t;
struct link_packet_counter {
/* total attempts to transmit unicast packets */
link_packet_stat_t num_packets_tx;
/* total ACKs for unicast packets */
link_packet_stat_t num_packets_acked;
/* total number of unicast and broadcast packets received */
link_packet_stat_t num_packets_rx;
};
/* All statistics of a given link */
struct link_stats {
clock_time_t last_tx_time; /* Last Tx timestamp */
@ -66,10 +85,17 @@ struct link_stats {
uint8_t tx_count; /* Tx count, used for ETX calculation */
uint8_t ack_count; /* ACK count, used for ETX calculation */
#endif /* LINK_STATS_ETX_FROM_PACKET_COUNT */
#if LINK_STATS_PACKET_COUNTERS
struct link_packet_counter cnt_current; /* packets in the current period */
struct link_packet_counter cnt_total; /* packets in total */
#endif
};
/* Returns the neighbor's link statistics */
const struct link_stats *link_stats_from_lladdr(const linkaddr_t *lladdr);
/* Returns the address of the neighbor */
const linkaddr_t *link_stats_get_lladdr(const struct link_stats *);
/* Are the statistics fresh? */
int link_stats_is_fresh(const struct link_stats *stats);
/* Resets link-stats module */