void netlink_neigh_info::fill(struct rtnl_neigh* neigh)
{
if (!neigh)
return;
nl_addr* addr;
char addr_str[ADDR_MAX_STR_LEN + 1];
addr = rtnl_neigh_get_dst(neigh);
if (addr) {
dst_addr_str = nl_addr2str(addr, addr_str, ADDR_MAX_STR_LEN);
dst_addr = (unsigned char*)nl_addr_get_binary_addr(addr);
dst_addr_len = nl_addr_get_len(addr);
}
addr = rtnl_neigh_get_lladdr(neigh);
if (addr) {
lladdr_str = nl_addr2str(addr, addr_str, ADDR_MAX_STR_LEN);
lladdr = (unsigned char*)nl_addr_get_binary_addr(addr);
lladdr_len = nl_addr_get_len(addr);
}
//addr_family = rtnl_neigh_get_family(neigh);
flags = rtnl_neigh_get_flags(neigh);
ifindex = rtnl_neigh_get_ifindex(neigh);
state = rtnl_neigh_get_state(neigh);
type = rtnl_neigh_get_type(neigh);
}
void nl_bridge::add_neigh_to_fdb(rtnl_neigh *neigh) {
assert(sw);
assert(neigh);
uint32_t port = nl->get_port_id(rtnl_neigh_get_ifindex(neigh));
if (port == 0) {
VLOG(1) << __FUNCTION__ << ": unknown port for neigh " << OBJ_CAST(neigh);
return;
}
nl_addr *mac = rtnl_neigh_get_lladdr(neigh);
int vlan = rtnl_neigh_get_vlan(neigh);
bool permanent = true;
// for sure this is master (sw bridged)
if (rtnl_neigh_get_master(neigh) &&
!(rtnl_neigh_get_flags(neigh) & NTF_MASTER)) {
rtnl_neigh_set_flags(neigh, NTF_MASTER);
}
// check if entry already exists in cache
if (is_mac_in_l2_cache(neigh)) {
permanent = false;
}
rofl::caddress_ll _mac((uint8_t *)nl_addr_get_binary_addr(mac),
nl_addr_get_len(mac));
LOG(INFO) << __FUNCTION__ << ": add mac=" << _mac << " to bridge "
<< rtnl_link_get_name(bridge) << " on port=" << port
<< " vlan=" << (unsigned)vlan << ", permanent=" << permanent;
LOG(INFO) << __FUNCTION__ << ": object: " << OBJ_CAST(neigh);
sw->l2_addr_add(port, vlan, _mac, true, permanent);
}
void nl_bridge::remove_neigh_from_fdb(rtnl_neigh *neigh) {
assert(sw);
nl_addr *addr = rtnl_neigh_get_lladdr(neigh);
if (nl_addr_cmp(rtnl_link_get_addr(bridge), addr) == 0) {
// ignore ll addr of bridge on slave
return;
}
// lookup l2_cache as well
std::unique_ptr<rtnl_neigh, decltype(&rtnl_neigh_put)> n_lookup(
NEIGH_CAST(nl_cache_search(l2_cache.get(), OBJ_CAST(neigh))),
rtnl_neigh_put);
if (n_lookup) {
nl_cache_remove(OBJ_CAST(n_lookup.get()));
}
const uint32_t port = nl->get_port_id(rtnl_neigh_get_ifindex(neigh));
rofl::caddress_ll mac((uint8_t *)nl_addr_get_binary_addr(addr),
nl_addr_get_len(addr));
sw->l2_addr_remove(port, rtnl_neigh_get_vlan(neigh), mac);
}
