void ipv6_net_if_get_best_src_addr(ipv6_addr_t *src, const ipv6_addr_t *dest)
{
/* try to find best match if dest is not mcast or link local */
int if_id = 0; // TODO: get this somehow
uint8_t tmp = 0;
uint8_t bmatch = 0;
ipv6_net_if_addr_t *addr = NULL;
ipv6_net_if_addr_t *tmp_addr = NULL;
if (!(ipv6_addr_is_link_local(dest)) && !(ipv6_addr_is_multicast(dest))) {
while ((addr = (ipv6_net_if_addr_t *)net_if_iter_addresses(if_id,
(net_if_addr_t **)&addr))) {
if (addr->ndp_state == NDP_ADDR_STATE_PREFERRED) {
if (!ipv6_addr_is_link_local(addr->addr_data) &&
!ipv6_addr_is_multicast(addr->addr_data) &&
!ipv6_addr_is_unique_local_unicast(addr->addr_data)) {
tmp = ipv6_get_addr_match(dest, addr->addr_data);
if (tmp >= bmatch) {
bmatch = tmp;
tmp_addr = addr;
}
}
}
}
}
else {
while ((addr = (ipv6_net_if_addr_t *)net_if_iter_addresses(if_id,
(net_if_addr_t **)&addr))) {
if (addr->ndp_state == NDP_ADDR_STATE_PREFERRED &&
ipv6_addr_is_link_local(addr->addr_data) &&
!ipv6_addr_is_multicast(addr->addr_data)) {
tmp_addr = addr;
}
}
}
if (tmp_addr == NULL) {
memset(src, 0, 16);
}
else {
memcpy(src, tmp_addr->addr_data, 16);
}
}
int sixlowpan_lowpan_border_init(int if_id)
{
ipv6_net_if_addr_t *addr = NULL;
uint8_t abr_addr_initialized = 0;
serial_reader_pid = thread_create(
serial_reader_stack, READER_STACK_SIZE,
PRIORITY_MAIN - 1, CREATE_STACKTEST,
serial_reader_f, "serial_reader");
ip_process_pid = thread_create(ip_process_buf, IP_PROCESS_STACKSIZE,
PRIORITY_MAIN - 1, CREATE_STACKTEST,
border_process_lowpan,
"border_process_lowpan");
if (ip_process_pid < 0) {
return 0;
}
if (!sixlowpan_lowpan_init_interface(if_id)) {
return 0;
}
while (net_if_iter_addresses(if_id, (net_if_addr_t **) &addr)) {
if (!ipv6_addr_is_multicast(addr->addr_data) &&
!ipv6_addr_is_link_local(addr->addr_data) &&
!ipv6_addr_is_loopback(addr->addr_data) &&
!ipv6_addr_is_unique_local_unicast(addr->addr_data)) {
abr_addr_initialized = 1;
abr_addr = addr->addr_data;
break;
}
}
if (!abr_addr_initialized) {
DEBUG("sixlowpan_lowpan_border_init(): A prefix must be initialized to"
"interface %d first", if_id);
return 0;
}
ipv6_init_as_router();
return 1;
}
