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Add a neighbor table entry if a DAO is received from a node where we don't yet have a neighbor table entry.

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This commit is contained in:
Adam Dunkels 2013-11-20 14:09:11 +01:00
parent 490791eaa4
commit 4e6fe7dda6
3 changed files with 46 additions and 2 deletions
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27
core/net/rpl/rpl-icmp6.c
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@ -700,6 +700,33 @@ dao_input(void)
}
PRINTF("RPL: adding DAO route\n");
uip_ds6_nbr_t *nbr;
if((nbr = uip_ds6_nbr_lookup(&dao_sender_addr)) == NULL) {
if((nbr = uip_ds6_nbr_add(&dao_sender_addr,
(uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_SENDER),
0, NBR_REACHABLE)) != NULL) {
/* set reachable timer */
stimer_set(&nbr->reachable, UIP_ND6_REACHABLE_TIME / 1000);
PRINTF("RPL: Neighbor added to neighbor cache ");
PRINT6ADDR(&dao_sender_addr);
PRINTF(", ");
PRINTLLADDR((uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_SENDER));
PRINTF("\n");
} else {
PRINTF("RPL: Out of Memory, dropping DAO from ");
PRINT6ADDR(&dao_sender_addr);
PRINTF(", ");
PRINTLLADDR((uip_lladdr_t *)packetbuf_addr(PACKETBUF_ADDR_SENDER));
PRINTF("\n");
return;
}
} else {
PRINTF("RPL: Neighbor already in neighbor cache\n");
}
rpl_lock_parent(p);
rep = rpl_add_route(dag, &prefix, prefixlen, &dao_sender_addr);
if(rep == NULL) {
RPL_STAT(rpl_stats.mem_overflows++);