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Merge pull request #102 from cetic/rpl-conf-init-link-metric

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Makes RPL Initial Link Metric configurable
This commit is contained in:
Adam Dunkels 2013-03-09 05:52:07 -08:00
commit ea92365cd4
4 changed files with 11 additions and 4 deletions
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9
core/net/rpl/rpl-conf.h
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@ -154,4 +154,13 @@
#define RPL_DIO_REDUNDANCY 10 #define RPL_DIO_REDUNDANCY 10
#endif #endif
/*
* Initial metric attributed to a link when the ETX is unknown
*/
#ifndef RPL_CONF_INIT_LINK_METRIC
#define RPL_INIT_LINK_METRIC NEIGHBOR_INFO_ETX2FIX(5)
#else
#define RPL_INIT_LINK_METRIC NEIGHBOR_INFO_ETX2FIX(RPL_CONF_INIT_LINK_METRIC)
#endif
#endif /* RPL_CONF_H */ #endif /* RPL_CONF_H */

2
core/net/rpl/rpl-dag.c
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@ -505,7 +505,7 @@ rpl_add_parent(rpl_dag_t *dag, rpl_dio_t *dio, uip_ipaddr_t *addr)
p->dag = dag; p->dag = dag;
p->rank = dio->rank; p->rank = dio->rank;
p->dtsn = dio->dtsn; p->dtsn = dio->dtsn;
p->link_metric = INITIAL_LINK_METRIC; p->link_metric = RPL_INIT_LINK_METRIC;
memcpy(&p->mc, &dio->mc, sizeof(p->mc)); memcpy(&p->mc, &dio->mc, sizeof(p->mc));
list_add(dag->parents, p); list_add(dag->parents, p);
return p; return p;

2
core/net/rpl/rpl-of-etx.c
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@ -112,7 +112,7 @@ calculate_rank(rpl_parent_t *p, rpl_rank_t base_rank)
if(base_rank == 0) { if(base_rank == 0) {
return INFINITE_RANK; return INFINITE_RANK;
} }
rank_increase = NEIGHBOR_INFO_FIX2ETX(INITIAL_LINK_METRIC) * RPL_MIN_HOPRANKINC; rank_increase = NEIGHBOR_INFO_FIX2ETX(RPL_INIT_LINK_METRIC) * RPL_MIN_HOPRANKINC;
} else { } else {
/* multiply first, then scale down to avoid truncation effects */ /* multiply first, then scale down to avoid truncation effects */
rank_increase = NEIGHBOR_INFO_FIX2ETX(p->link_metric * p->dag->instance->min_hoprankinc); rank_increase = NEIGHBOR_INFO_FIX2ETX(p->link_metric * p->dag->instance->min_hoprankinc);

2
core/net/rpl/rpl-private.h
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@ -139,8 +139,6 @@
#define INFINITE_RANK 0xffff #define INFINITE_RANK 0xffff
#define INITIAL_LINK_METRIC NEIGHBOR_INFO_ETX2FIX(5)
/* Represents 2^n ms. */ /* Represents 2^n ms. */
/* Default value according to the specification is 3 which /* Default value according to the specification is 3 which
means 8 milliseconds, but that is an unreasonable value if means 8 milliseconds, but that is an unreasonable value if