ipv6_addr_t *gnrc_ipv6_netif_find_best_src_addr(kernel_pid_t pid, const ipv6_addr_t *dst)
{
gnrc_ipv6_netif_t *iface = gnrc_ipv6_netif_get(pid);
ipv6_addr_t *best_src = NULL;
mutex_lock(&(iface->mutex));
BITFIELD(candidate_set, GNRC_IPV6_NETIF_ADDR_NUMOF);
memset(candidate_set, 0, sizeof(candidate_set));
int first_candidate = _create_candidate_set(iface, dst, candidate_set);
if (first_candidate >= 0) {
best_src = _source_address_selection(iface, dst, candidate_set);
if (best_src == NULL) {
best_src = &(iface->addrs[first_candidate].addr);
}
}
mutex_unlock(&(iface->mutex));
return best_src;
}
ipv6_addr_t *gnrc_netif_ipv6_addr_best_src(gnrc_netif_t *netif,
const ipv6_addr_t *dst,
bool ll_only)
{
ipv6_addr_t *best_src = NULL;
BITFIELD(candidate_set, GNRC_NETIF_IPV6_ADDRS_NUMOF);
assert((netif != NULL) && (dst != NULL));
memset(candidate_set, 0, sizeof(candidate_set));
gnrc_netif_acquire(netif);
int first_candidate = _create_candidate_set(netif, dst, ll_only,
candidate_set);
if (first_candidate >= 0) {
best_src = _src_addr_selection(netif, dst, candidate_set);
if (best_src == NULL) {
best_src = &(netif->ipv6.addrs[first_candidate]);
}
}
gnrc_netif_release(netif);
return best_src;
}