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avoid updating routes that already are correct

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This commit is contained in:
Joakim Eriksson 2014-10-19 20:48:10 +02:00
parent b8e2d33e06
commit 3aa8a62e41
1 changed files with 7 additions and 0 deletions
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7
core/net/ipv6/uip-ds6-route.c
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@ -269,9 +269,16 @@ uip_ds6_route_add(uip_ipaddr_t *ipaddr, uint8_t length,
one first. */ one first. */
r = uip_ds6_route_lookup(ipaddr); r = uip_ds6_route_lookup(ipaddr);
if(r != NULL) { if(r != NULL) {
uip_ipaddr_t *current_nexthop;
current_nexthop = uip_ds6_route_nexthop(r);
if(uip_ipaddr_cmp(nexthop, current_nexthop)) {
/* no need to update route - already correct! */
return r;
}
PRINTF("uip_ds6_route_add: old route for "); PRINTF("uip_ds6_route_add: old route for ");
PRINT6ADDR(ipaddr); PRINT6ADDR(ipaddr);
PRINTF(" found, deleting it\n"); PRINTF(" found, deleting it\n");
uip_ds6_route_rm(r); uip_ds6_route_rm(r);
} }
{ {