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gnrc_rpl: new default route when old one was deleted

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This commit is contained in:
Cenk Gündoğan 2016-03-23 11:17:37 +01:00
parent 095e4558df
commit eae0e4c724
1 changed files with 20 additions and 2 deletions
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22
sys/net/gnrc/routing/rpl/gnrc_rpl_dodag.c
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@ -192,12 +192,30 @@ bool gnrc_rpl_parent_add_by_addr(gnrc_rpl_dodag_t *dodag, ipv6_addr_t *addr,
bool gnrc_rpl_parent_remove(gnrc_rpl_parent_t *parent)
{
if (parent == parent->dodag->parents) {
assert(parent != NULL);
gnrc_rpl_dodag_t *dodag = parent->dodag;
if (parent == dodag->parents) {
fib_remove_entry(&gnrc_ipv6_fib_table,
(uint8_t *) ipv6_addr_unspecified.u8,
sizeof(ipv6_addr_t));
/* set the default route to the next parent for now */
if (parent->next) {
uint32_t now = xtimer_now() / SEC_IN_USEC;
fib_add_entry(&gnrc_ipv6_fib_table,
dodag->iface,
(uint8_t *) ipv6_addr_unspecified.u8,
sizeof(ipv6_addr_t),
FIB_FLAG_NET_PREFIX,
parent->next->addr.u8,
sizeof(ipv6_addr_t),
FIB_FLAG_RPL_ROUTE,
(parent->next->lifetime - now) * SEC_IN_MS);
}
}
LL_DELETE(parent->dodag->parents, parent);
LL_DELETE(dodag->parents, parent);
memset(parent, 0, sizeof(gnrc_rpl_parent_t));
return true;
}