void evict( uint16_t short_addr ){
send_evict( short_addr );
remove_neighbor( short_addr );
reset_beacon_interval();
}
void process_evict( wcom_msg_evict_t *msg,
wcom_mac_addr_t *addr,
wcom_mac_rx_options_t *options ){
// get neighbor
wcom_neighbor_t *neighbor = wcom_neighbors_p_get_neighbor( addr->source_addr );
// check if we have the neighbor
if( neighbor < 0 ){
log_v_debug_P( PSTR("Evict from unknown neighbor: %s"), addr->source_addr );
return;
}
//log_v_debug_P( PSTR("Received evict from:%d"), addr->source_addr );
// verify message
uint8_t auth_tag[CRYPT_AUTH_TAG_SIZE];
wcom_mac_sec_v_compute_auth_tag( neighbor->iv,
msg,
sizeof(wcom_msg_evict_t) - CRYPT_AUTH_TAG_SIZE,
auth_tag );
// check message
if( !memcmp( auth_tag, msg->auth_tag, sizeof(auth_tag) ) == 0 ){
log_v_debug_P( PSTR("Evict auth fail") );
return;
}
// not paired, we got evicted
log_v_debug_P( PSTR("Evicted by:%d IP:%d.%d.%d.%d"),
(uint16_t)addr->source_addr,
neighbor->ip.ip3,
neighbor->ip.ip2,
neighbor->ip.ip1,
neighbor->ip.ip0 );
// remove neighbor
remove_neighbor( neighbor->short_addr );
// reset beacon interval
reset_beacon_interval();
}
void rxneigh_update(void) {
// update local neighbor list
RipNeighbor *neigh = neighbors;
while (neigh != NULL) {
RipNeighbor *next = neigh->next;
if (++neigh->rx_time > RIP_ROUTE_TIMEOUT)
remove_neighbor(neigh);
neigh = next;
}
// update shm neighbor list
if (--shm_update_timeout <= 0) {
shm_update_timeout = RIP_UPDATE_SHM_TIMEOUT;
// lock http
shm->stats.rip_active_locked = 1;
neigh = neighbors;
int i = 0;
while (neigh != NULL) {
RcpActiveNeighbor *an = &shm->stats.rip_active[i];
an->valid = 0;
an->area = 0;
an->router_id = 0;
RcpInterface *intf = rcpFindInterfaceByLPM(shm, neigh->ip);
if (intf) {
an->network = intf->ip & intf->mask;
an->netmask_cnt = mask2bits(intf->mask);
an->if_ip = intf->ip;
an->ip = neigh->ip;
an->valid = 1;
i++;
}
neigh = neigh->next;
}
// clear remaining active neighbors
for (; i < RCP_ACTIVE_NEIGHBOR_LIMIT; i++)
shm->stats.rip_active[i].valid = 0;
}
shm->stats.rip_active_locked = 0;
}
