TError TNl::ProxyNeighbour(int ifindex, const TNlAddr &addr, bool add) {
struct rtnl_neigh *neigh;
int ret;
neigh = rtnl_neigh_alloc();
if (!neigh)
return TError(EError::Unknown, "Cannot allocate neighbour");
ret = rtnl_neigh_set_dst(neigh, addr.Addr);
if (ret) {
rtnl_neigh_put(neigh);
return Error(ret, "Cannot set neighbour dst");
}
rtnl_neigh_set_flags(neigh, NTF_PROXY);
rtnl_neigh_set_state(neigh, NUD_PERMANENT);
rtnl_neigh_set_ifindex(neigh, ifindex);
if (add) {
Dump("add", neigh);
ret = rtnl_neigh_add(Sock, neigh, NLM_F_CREATE | NLM_F_REPLACE);
} else {
Dump("del", neigh);
ret = rtnl_neigh_delete(Sock, neigh, 0);
if (ret == -NLE_OBJ_NOTFOUND)
ret = 0;
}
rtnl_neigh_put(neigh);
if (ret)
return Error(ret, "Cannot modify neighbour for l3 network");
return TError::Success();
}
void
switchlink_linux_mac_update(switchlink_mac_addr_t mac_addr,
switchlink_handle_t bridge_h,
switchlink_handle_t intf_h, bool create) {
switchlink_db_status_t status;
uint32_t ifindex;
if (!create) {
status = switchlink_db_mac_get_intf(mac_addr, bridge_h, &intf_h);
if (status != SWITCHLINK_DB_STATUS_SUCCESS) {
assert(false);
return;
}
}
status = switchlink_db_interface_get_ifindex(intf_h, &ifindex);
if (status != SWITCHLINK_DB_STATUS_SUCCESS) {
assert(false);
return;
}
struct nl_sock *nlsk = switchlink_get_nl_sock();
if (!nlsk) {
return;
}
struct nl_addr *nl_addr = nl_addr_build(AF_LLC, mac_addr, ETH_ALEN);
struct rtnl_neigh *rtnl_neigh = rtnl_neigh_alloc();
rtnl_neigh_set_ifindex(rtnl_neigh, ifindex);
rtnl_neigh_set_lladdr(rtnl_neigh, nl_addr);
rtnl_neigh_set_state(rtnl_neigh, rtnl_neigh_str2state("permanent"));
rtnl_neigh_set_family(rtnl_neigh, AF_BRIDGE);
if (create) {
status = switchlink_db_mac_add(mac_addr, bridge_h, intf_h);
assert(status == SWITCHLINK_DB_STATUS_SUCCESS);
rtnl_neigh_add(nlsk, rtnl_neigh, NLM_F_CREATE|NLM_F_REPLACE);
} else {
status = switchlink_db_mac_delete(mac_addr, bridge_h);
assert(status == SWITCHLINK_DB_STATUS_SUCCESS);
rtnl_neigh_delete(nlsk, rtnl_neigh, 0);
}
rtnl_neigh_put(rtnl_neigh);
nl_addr_put(nl_addr);
}
static struct nl_addr *get_neigh_mac(struct get_neigh_handler *neigh_handler)
{
struct rtnl_neigh *neigh;
struct nl_addr *ll_addr = NULL;
/* future optimization - if link local address - parse address and
* return mac now instead of doing so after the routing CB. This
* is of course referred to GIDs */
neigh = rtnl_neigh_get(neigh_handler->neigh_cache,
neigh_handler->oif,
neigh_handler->dst);
if (neigh == NULL)
return NULL;
ll_addr = rtnl_neigh_get_lladdr(neigh);
if (NULL != ll_addr)
ll_addr = nl_addr_clone(ll_addr);
rtnl_neigh_put(neigh);
return ll_addr;
}
