/*---------------------------------------------------------------------------*/
void
phase_update(const linkaddr_t *neighbor, rtimer_clock_t time, uint32_t cycle_time,
int mac_status)
{
struct phase *e;
/* If we have an entry for this neighbor already, we renew it. */
e = nbr_table_get_from_lladdr(nbr_phase, neighbor);
if(e != NULL) {
if(mac_status == MAC_TX_OK) {
#if PHASE_DRIFT_CORRECT
e->drift = time-e->time;
#endif
e->time = time;
if(cycle_time!=0){
e->cycle=cycle_time;
}
else{
e->cycle=CONTIKIMAC_CONF_CYCLE_TIME;
}
}
/* If the neighbor didn't reply to us, it may have switched
phase (rebooted). We try a number of transmissions to it
before we drop it from the phase list. */
if(mac_status == MAC_TX_NOACK) {
PRINTF("phase noacks %d to %d.%d\n", e->noacks, neighbor->u8[0], neighbor->u8[1]);
e->noacks++;
if(e->noacks == 1) {
timer_set(&e->noacks_timer, MAX_NOACKS_TIME);
}
if(e->noacks >= MAX_NOACKS || timer_expired(&e->noacks_timer)) {
PRINTF("drop %d\n", neighbor->u8[0]);
nbr_table_remove(nbr_phase, e);
return;
}
if(e->noacks >= MAX_NOACKbis){
e->cycle=CONTIKIMAC_CONF_CYCLE_TIME;
}
} else if(mac_status == MAC_TX_OK) {
e->noacks = 0;
}
} else {
/* No matching phase was found, so we allocate a new one. */
if(mac_status == MAC_TX_OK && e == NULL) {
e = nbr_table_add_lladdr(nbr_phase, neighbor);
if(e) {
e->time = time;
#if PHASE_DRIFT_CORRECT
e->drift = 0;
#endif
e->noacks = 0;
}
}
}
}
/*---------------------------------------------------------------------------*/
void
uip_ds6_route_rm(uip_ds6_route_t *route)
{
#if DEBUG != DEBUG_NONE
assert_nbr_routes_list_sane();
#endif /* DEBUG != DEBUG_NONE */
if(route != NULL && route->routes != NULL) {
PRINTF("uip_ds6_route_rm: removing route: ");
PRINT6ADDR(&route->ipaddr);
PRINTF("\n");
list_remove(route->routes->route_list, route);
if(list_head(route->routes->route_list) == NULL) {
/* If this was the only route using this neighbor, remove the
neibhor from the table */
PRINTF("uip_ds6_route_rm: removing neighbor too\n");
nbr_table_remove(nbr_routes, route->routes->route_list);
}
memb_free(&routememb, route);
num_routes--;
PRINTF("uip_ds6_route_rm num %d\n", num_routes);
#if UIP_DS6_NOTIFICATIONS
call_route_callback(UIP_DS6_NOTIFICATION_ROUTE_RM,
&route->ipaddr, uip_ds6_route_nexthop(route));
#endif
#if 0 //(DEBUG & DEBUG_ANNOTATE) == DEBUG_ANNOTATE
/* we need to check if this was the last route towards "nexthop" */
/* if so - remove that link (annotation) */
uip_ds6_route_t *r;
for(r = uip_ds6_route_head();
r != NULL;
r = uip_ds6_route_next(r)) {
uip_ipaddr_t *nextr, *nextroute;
nextr = uip_ds6_route_nexthop(r);
nextroute = uip_ds6_route_nexthop(route);
if(nextr != NULL &&
nextroute != NULL &&
uip_ipaddr_cmp(nextr, nextroute)) {
/* we found another link using the specific nexthop, so keep the #L */
return;
}
}
ANNOTATE("#L %u 0\n", uip_ds6_route_nexthop(route)->u8[sizeof(uip_ipaddr_t) - 1]);
#endif
}
#if DEBUG != DEBUG_NONE
assert_nbr_routes_list_sane();
#endif /* DEBUG != DEBUG_NONE */
return;
}
/*---------------------------------------------------------------------------*/
void
rpl_remove_parent(rpl_parent_t *parent)
{
PRINTF("RPL: Removing parent ");
PRINT6ADDR(rpl_get_parent_ipaddr(parent));
PRINTF("\n");
rpl_nullify_parent(parent);
nbr_table_remove(rpl_parents, parent);
}
/*---------------------------------------------------------------------------*/
void
uip_ds6_nbr_rm(uip_ds6_nbr_t *nbr)
{
if(nbr != NULL) {
#if UIP_CONF_IPV6_QUEUE_PKT
uip_packetqueue_free(&nbr->packethandle);
#endif /* UIP_CONF_IPV6_QUEUE_PKT */
NEIGHBOR_STATE_CHANGED(nbr);
nbr_table_remove(ds6_neighbors, nbr);
}
return;
}
/*---------------------------------------------------------------------------*/
static void
rm_routelist(struct uip_ds6_route_neighbor_routes *routes)
{
#if DEBUG != DEBUG_NONE
assert_nbr_routes_list_sane();
#endif /* DEBUG != DEBUG_NONE */
PRINTF("uip_ds6_route_rm_routelist\n");
if(routes != NULL && routes->route_list != NULL) {
struct uip_ds6_route_neighbor_route *r;
r = list_head(routes->route_list);
while(r != NULL) {
uip_ds6_route_rm(r->route);
r = list_head(routes->route_list);
}
nbr_table_remove(nbr_routes, routes);
}
#if DEBUG != DEBUG_NONE
assert_nbr_routes_list_sane();
#endif /* DEBUG != DEBUG_NONE */
}
/*---------------------------------------------------------------------------*/
static int
parse(void)
{
int result;
const linkaddr_t *sender;
struct anti_replay_info* info;
result = DECORATED_FRAMER.parse();
if(result == FRAMER_FAILED) {
return result;
}
if(packetbuf_attr(PACKETBUF_ATTR_SECURITY_LEVEL) != SEC_LVL) {
PRINTF("noncoresec: received frame with wrong security level\n");
return FRAMER_FAILED;
}
sender = packetbuf_addr(PACKETBUF_ADDR_SENDER);
if(linkaddr_cmp(sender, &linkaddr_node_addr)) {
PRINTF("noncoresec: frame from ourselves\n");
return FRAMER_FAILED;
}
packetbuf_set_datalen(packetbuf_datalen() - MIC_LEN);
if(!aead(result, 0)) {
PRINTF("noncoresec: received unauthentic frame %lu\n",
anti_replay_get_counter());
return FRAMER_FAILED;
}
info = nbr_table_get_from_lladdr(anti_replay_table, sender);
if(!info) {
info = nbr_table_add_lladdr(anti_replay_table, sender, NBR_TABLE_REASON_LLSEC, NULL);
if(!info) {
PRINTF("noncoresec: could not get nbr_table_item\n");
return FRAMER_FAILED;
}
/*
* Locking avoids replay attacks due to removed neighbor table items.
* Unfortunately, an attacker can mount a memory-based DoS attack
* on this by replaying broadcast frames from other network parts.
* However, this is not an issue as long as the network size does not
* exceed NBR_TABLE_MAX_NEIGHBORS.
*
* To avoid locking, we could swap anti-replay information
* to external flash. Locking is also unnecessary when using
* pairwise session keys, as done in coresec.
*/
if(!nbr_table_lock(anti_replay_table, info)) {
nbr_table_remove(anti_replay_table, info);
PRINTF("noncoresec: could not lock\n");
return FRAMER_FAILED;
}
anti_replay_init_info(info);
} else {
if(anti_replay_was_replayed(info)) {
PRINTF("noncoresec: received replayed frame %lu\n",
anti_replay_get_counter());
return FRAMER_FAILED;
}
}
return result;
}
/*---------------------------------------------------------------------------*/
void
uip_ds6_route_rm(uip_ds6_route_t *route)
{
struct uip_ds6_route_neighbor_route *neighbor_route;
#if DEBUG != DEBUG_NONE
assert_nbr_routes_list_sane();
#endif /* DEBUG != DEBUG_NONE */
if(route != NULL && route->neighbor_routes != NULL) {
PRINTF("uip_ds6_route_rm: removing route: ");
PRINT6ADDR(&route->ipaddr);
PRINTF("\n");
/* Remove the route from the route list */
list_remove(routelist, route);
/* Find the corresponding neighbor_route and remove it. */
for(neighbor_route = list_head(route->neighbor_routes->route_list);
neighbor_route != NULL && neighbor_route->route != route;
neighbor_route = list_item_next(neighbor_route));
if(neighbor_route == NULL) {
PRINTF("uip_ds6_route_rm: neighbor_route was NULL for ");
uip_debug_ipaddr_print(&route->ipaddr);
PRINTF("\n");
}
list_remove(route->neighbor_routes->route_list, neighbor_route);
if(list_head(route->neighbor_routes->route_list) == NULL) {
/* If this was the only route using this neighbor, remove the
neighbor from the table - this implicitly unlocks nexthop */
#if (DEBUG) & DEBUG_ANNOTATE
uip_ipaddr_t *nexthop = uip_ds6_route_nexthop(route);
if(nexthop != NULL) {
ANNOTATE("#L %u 0\n", nexthop->u8[sizeof(uip_ipaddr_t) - 1]);
}
#endif /* (DEBUG) & DEBUG_ANNOTATE */
PRINTF("uip_ds6_route_rm: removing neighbor too\n");
nbr_table_remove(nbr_routes, route->neighbor_routes->route_list);
#ifdef NETSTACK_CONF_ROUTING_NEIGHBOR_REMOVED_CALLBACK
NETSTACK_CONF_ROUTING_NEIGHBOR_REMOVED_CALLBACK(
(const linkaddr_t *)nbr_table_get_lladdr(nbr_routes, route->neighbor_routes->route_list));
#endif
}
memb_free(&routememb, route);
memb_free(&neighborroutememb, neighbor_route);
num_routes--;
PRINTF("uip_ds6_route_rm num %d\n", num_routes);
#if UIP_DS6_NOTIFICATIONS
call_route_callback(UIP_DS6_NOTIFICATION_ROUTE_RM,
&route->ipaddr, uip_ds6_route_nexthop(route));
#endif
#ifdef NETSTACK_CONF_ROUTE_REMOVED_CALLBACK
NETSTACK_CONF_ROUTE_REMOVED_CALLBACK(&route->ipaddr);
#endif /* NETSTACK_CONF_ROUTE_REMOVED_CALLBACK*/
}
#if DEBUG != DEBUG_NONE
assert_nbr_routes_list_sane();
#endif /* DEBUG != DEBUG_NONE */
return;
}
