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Implement RPL non-storing mode

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This commit is contained in:
Simon Duquennoy 2016-02-01 18:02:33 +01:00
parent d14b76d869
commit b3e31e1456
17 changed files with 1149 additions and 278 deletions
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73
core/net/rpl/rpl-dag.c
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@ -98,8 +98,8 @@ rpl_print_neighbor_list(void)
rpl_parent_t *p = nbr_table_head(rpl_parents);
clock_time_t clock_now = clock_time();
printf("RPL: OCP %u rank %u dioint %u, nbr count %u\n",
default_instance->of->ocp, curr_rank, curr_dio_interval, uip_ds6_nbr_num());
printf("RPL: MOP %u OCP %u rank %u dioint %u, nbr count %u\n",
default_instance->mop, default_instance->of->ocp, curr_rank, curr_dio_interval, uip_ds6_nbr_num());
while(p != NULL) {
const struct link_stats *stats = rpl_get_parent_link_stats(p);
printf("RPL: nbr %3u %5u, %5u => %5u -- %2u %c%c (last tx %u min ago)\n",
@ -418,7 +418,9 @@ rpl_set_root(uint8_t instance_id, uip_ipaddr_t *dag_id)
if(instance->current_dag != dag && instance->current_dag != NULL) {
/* Remove routes installed by DAOs. */
rpl_remove_routes(instance->current_dag);
if(RPL_IS_STORING(instance)) {
rpl_remove_routes(instance->current_dag);
}
instance->current_dag->joined = 0;
}
@ -667,7 +669,9 @@ rpl_free_dag(rpl_dag_t *dag)
dag->joined = 0;
/* Remove routes installed by DAOs. */
rpl_remove_routes(dag);
if(RPL_IS_STORING(dag->instance)) {
rpl_remove_routes(dag);
}
/* Remove autoconfigured address */
if((dag->prefix_info.flags & UIP_ND6_RA_FLAG_AUTONOMOUS)) {
@ -787,7 +791,9 @@ rpl_select_dag(rpl_instance_t *instance, rpl_parent_t *p)
if(instance->current_dag != best_dag) {
/* Remove routes installed by DAOs. */
rpl_remove_routes(instance->current_dag);
if(RPL_IS_STORING(instance)) {
rpl_remove_routes(instance->current_dag);
}
PRINTF("RPL: New preferred DAG: ");
PRINT6ADDR(&best_dag->dag_id);
@ -816,7 +822,7 @@ rpl_select_dag(rpl_instance_t *instance, rpl_parent_t *p)
if(!acceptable_rank(best_dag, best_dag->rank)) {
PRINTF("RPL: New rank unacceptable!\n");
rpl_set_preferred_parent(instance->current_dag, NULL);
if(instance->mop != RPL_MOP_NO_DOWNWARD_ROUTES && last_parent != NULL) {
if(RPL_IS_STORING(instance) && last_parent != NULL) {
/* Send a No-Path DAO to the removed preferred parent. */
dao_output(last_parent, RPL_ZERO_LIFETIME);
}
@ -828,15 +834,13 @@ rpl_select_dag(rpl_instance_t *instance, rpl_parent_t *p)
PRINTF("RPL: Changed preferred parent, rank changed from %u to %u\n",
(unsigned)old_rank, best_dag->rank);
RPL_STAT(rpl_stats.parent_switch++);
if(instance->mop != RPL_MOP_NO_DOWNWARD_ROUTES) {
if(last_parent != NULL) {
/* Send a No-Path DAO to the removed preferred parent. */
dao_output(last_parent, RPL_ZERO_LIFETIME);
}
/* The DAO parent set changed - schedule a DAO transmission. */
RPL_LOLLIPOP_INCREMENT(instance->dtsn_out);
rpl_schedule_dao(instance);
if(RPL_IS_STORING(instance) && last_parent != NULL) {
/* Send a No-Path DAO to the removed preferred parent. */
dao_output(last_parent, RPL_ZERO_LIFETIME);
}
/* The DAO parent set changed - schedule a DAO transmission. */
RPL_LOLLIPOP_INCREMENT(instance->dtsn_out);
rpl_schedule_dao(instance);
rpl_reset_dio_timer(instance);
#if DEBUG
rpl_print_neighbor_list();
@ -954,9 +958,11 @@ rpl_nullify_parent(rpl_parent_t *parent)
uip_ds6_defrt_rm(dag->instance->def_route);
dag->instance->def_route = NULL;
}
/* Send No-Path DAO only to preferred parent, if any */
/* Send No-Path DAO only when nullifying preferred parent */
if(parent == dag->preferred_parent) {
dao_output(parent, RPL_ZERO_LIFETIME);
if(RPL_IS_STORING(dag->instance)) {
dao_output(parent, RPL_ZERO_LIFETIME);
}
rpl_set_preferred_parent(dag, NULL);
}
}
@ -982,8 +988,10 @@ rpl_move_parent(rpl_dag_t *dag_src, rpl_dag_t *dag_dst, rpl_parent_t *parent)
dag_src->instance->def_route = NULL;
}
} else if(dag_src->joined) {
/* Remove uIPv6 routes that have this parent as the next hop. */
rpl_remove_routes_by_nexthop(rpl_get_parent_ipaddr(parent), dag_src);
if(RPL_IS_STORING(dag_src->instance)) {
/* Remove uIPv6 routes that have this parent as the next hop. */
rpl_remove_routes_by_nexthop(rpl_get_parent_ipaddr(parent), dag_src);
}
}
PRINTF("RPL: Moving parent ");
@ -1006,6 +1014,25 @@ rpl_has_downward_route(void)
}
/*---------------------------------------------------------------------------*/
rpl_dag_t *
rpl_get_dag(const uip_ipaddr_t *addr)
{
int i, j;
for(i = 0; i < RPL_MAX_INSTANCES; ++i) {
if(instance_table[i].used) {
for(j = 0; j < RPL_MAX_DAG_PER_INSTANCE; ++j) {
if(instance_table[i].dag_table[j].joined
&& uip_ipaddr_prefixcmp(&instance_table[i].dag_table[j].dag_id, addr,
instance_table[i].dag_table[j].prefix_info.length)) {
return &instance_table[i].dag_table[j];
}
}
}
}
return NULL;
}
/*---------------------------------------------------------------------------*/
rpl_dag_t *
rpl_get_any_dag(void)
{
int i;
@ -1055,6 +1082,12 @@ rpl_join_instance(uip_ipaddr_t *from, rpl_dio_t *dio)
rpl_parent_t *p;
rpl_of_t *of;
if((!RPL_WITH_NON_STORING && dio->mop == RPL_MOP_NON_STORING)
|| (!RPL_WITH_STORING && (dio->mop == RPL_MOP_STORING_NO_MULTICAST
|| dio->mop == RPL_MOP_STORING_MULTICAST))) {
PRINTF("RPL: DIO advertising a non-supported MOP %u\n", dio->mop);
}
/* Determine the objective function by using the
objective code point of the DIO. */
of = rpl_find_of(dio->ocp);
@ -1333,7 +1366,9 @@ rpl_process_parent_event(rpl_instance_t *instance, rpl_parent_t *p)
return_value = 1;
if(uip_ds6_route_is_nexthop(rpl_get_parent_ipaddr(p)) && !rpl_parent_is_reachable(p)) {
if(RPL_IS_STORING(instance)
&& uip_ds6_route_is_nexthop(rpl_get_parent_ipaddr(p))
&& !rpl_parent_is_reachable(p) && instance->mop > RPL_MOP_NON_STORING) {
PRINTF("RPL: Unacceptable link %u, removing routes via: ", rpl_get_parent_link_metric(p));
PRINT6ADDR(rpl_get_parent_ipaddr(p));
PRINTF("\n");