RIOT-OS/RIOT
RIOT-OS/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-01-17 04:52:59 +01:00
Code Releases Activity

ipv6/nib: delete DC entries, referencing a deleted DR

Browse Source
This commit is contained in:
Fabian Hüßler 2022-10-27 13:30:07 +02:00 committed by Fabian Hüßler
parent cc6eb465df
commit d5d4fc869a
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
sys/net/gnrc/network_layer/ipv6/nib/_nib-internal.c
View File

@ -378,6 +378,20 @@ void _nib_drl_remove(_nib_dr_entry_t *nib_dr)
if (nib_dr->next_hop != NULL) {
_evtimer_del(&nib_dr->rtr_timeout);
nib_dr->next_hop->mode &= ~(_DRL);
#if IS_ACTIVE(CONFIG_GNRC_IPV6_NIB_DC)
/* When removing a router from the Default
Router list, the node MUST update the Destination Cache in such a way
that all entries using the router perform next-hop determination
again rather than continue sending traffic to the (deleted) router.
(https://datatracker.ietf.org/doc/html/rfc4861#section-6.3.5)
*/
_nib_offl_entry_t *dc = NULL;
while ((dc = _nib_offl_iter(dc))) {
if ((dc->mode & _DC) && dc->next_hop == nib_dr->next_hop) {
_nib_dc_remove(dc);
}
}
#endif
_nib_onl_clear(nib_dr->next_hop);
memset(nib_dr, 0, sizeof(_nib_dr_entry_t));
}